An ISO 9001:2015 Organization
State Load Despatch Center, Delhi
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SMS Report     Message ID Time stamp Message 20241128162455 2024/11/28 16:24:55 1) Name of the substation and Time: 220KV Narela 2) Name of element tripped/restored: 220kv DSIDC cKT-I AND restroed at 14:36Hrs. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20241128125641 2024/11/28 12:56:42 1) Name of the substation and Time: 220KV Narela at 12:22Hrs 2) Name of element tripped/restored: 220KV DSIDC Ckt No-I 3) Relay Annunciation: Line Diff R-Ph, 3.821KM and 13.78KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20241128075511 2024/11/28 07:55:11 1) Name of the substation and Time: 220 kV Kanjhawla:-19:16 Hrs 2) Name of element tripped/restored: 220 kV Mundka ckt restoration at 07:48 Hrs dt 28.11.2024 3) Relay Annunciation: -- 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 kV Mundka ckt restoration at 07:48 Hrs dt 28.11.2024 Regards, Delhi SLDC 20241127193453 2024/11/27 19:34:53 1) Name of the substation and Time: 220 kV Kanjhawla:- 19:16 Hrs 2) Name of element tripped/restored: 220 kV Mundka ckt 3) Relay Annunciation: Y ph. Trip ,Diffres. Trip , N2Y ph, Bph Trip, F/L 3.267 KM Knj end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: NO LOAD Effected Regards, Delhi SLDC 20241126114143 2024/11/26 11:41:43 1) Name of the substation and Time: 220 kV Mazid moth :- 11:15 hrs 2) Name of element tripped/restored: 100 MVAPtx-III with 33 kV I/C-III charged at 11:15 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 100 MVAPtx-III with 33 kV I/C-III charged at 11:15 Hrs Regards, Delhi SLDC 20241126105928 2024/11/26 10:59:28 1) Name of the substation and Time: 220 kV Mazid moth:- 10:36 Hrs 2) Name of element tripped/restored: 100 MVA Ptx-III with 33 I/C-III Tripped 3) Relay Annunciation: 100 MVA Ptx-III -86 33 I/C-III Tripped inter tripping 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 33 kV Bus coupler close at 10:37 Hrs 6) Any other relevant information: Aprox load effected 26 MW only one mint Regards, Delhi SLDC 20241125084553 2024/11/25 08:45:53 1) Name of the substation and Time: At 220KV BTPS 2) Name of element tripped/restored: 220KV Okhala Ckt-I Restored at 05:48Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20241125084412 2024/11/25 08:44:12 1) Name of the substation and Time: At Munduka S/stn. 2) Name of element tripped/restored: 220KV Peeragarhi Ckt-1 3) Relay Annunciation: High Speed, 86 Gr-A and B, High low burden Gr-A of RYB-Ph, Dist Protection R=899A, Y=905A,B=899A 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load affected without exact value because SAS Problem ocured while tripping of peeragarhi ckt-I 6) Any other relevant information: 220KV Peeragarhi ckt-II kept off in night due to MVAR increse Regards, Delhi SLDC 20241125083828 2024/11/25 08:38:28 1) Name of the substation and Time: At 220KV T.bad s/stn. 2) Name of element tripped/restored: 220KV Masjid Moth-I restored at 07:53Hrs. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20241125083659 2024/11/25 08:36:59 1) Name of the substation and Time: 220KV T.bad S/stn. 2) Name of element tripped/restored: 220KV RK Puram-II restored at 07:53Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20241125083351 2024/11/25 08:33:51 1) Name of the substation and Time: At 220KV BTPS 2) Name of element tripped/restored: restored at 05:48Hrs. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20241125005941 2024/11/25 00:59:41 1) Name of the substation and Time: 220KV T.bad S/stn. at 00:45Hrs. 2) Name of element tripped/restored: 220KV Maqsjid Moth-I 3) Relay Annunciation: gEN Trip, Y-ph Trip, over voltage 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: load not affected due to bus coupler 6) Any other relevant information: - Regards, Delhi SLDC 20241125003733 2024/11/25 00:37:33 1) Name of the substation and Time: 220KV T.bad S/stn. at 22:52Hrs. 2) Name of element tripped/restored: 220KV R.K. Puram-II 3) Relay Annunciation: RYB-trip, 3-Ph Intiate, Over Voltage, Line diff communication fail 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: load not affected 6) Any other relevant information: - Regards, Delhi SLDC 20241124225452 2024/11/24 22:54:52 1) Name of the substation and Time: 220KV BTPS AT 22:07 2) Name of element tripped/restored: 220KV Okhla-1 3) Relay Annunciation: 86A,86B,Over voltage 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load not affected 6) Any other relevant information: Relay is not allowing to rest by operator Regards, Delhi SLDC 20241123063937 2024/11/23 06:39:37 1) Name of the substation and Time: 220kV Okhla S/stn at 05:15 Hrs 2) Name of element tripped/restored: 160 MVA,220/66V Power Transformer charged at 06:17 Hrs 66kV Incomer no-I charged at 06:27 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20241123054056 2024/11/23 05:40:56 1) Name of the substation and Time: 220 kV Okhla:- 05:15 Hrs 2) Name of element tripped/restored: 220 /66 kV,160 MVA Ptx-I with 66 kV I/C-I 3) Relay Annunciation: Any Trip , O/C ,R,Y and B ph.86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: -Approx.Load effected 16 MW Regards, Delhi SLDC 20241120071939 2024/11/20 07:19:39 1) Name of the substation and Time: 220 kV Okhla :-06:51 Hrs 2) Name of element tripped/restored: 100 MVA Ptx-II with 66 kV I/C-II 3) Relay Annunciation: Diff. R ph ,86,186 A,B ,LV and HV operated 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 66 kV bus coupler put on at 06:53 Hrs 6) Any other relevant information: Effected Aprox load 8 MW only 2 minits Regards, Delhi SLDC 20241118193459 2024/11/18 19:34:59 1) Name of the substation and Time: 220KV Mehrauli, 19:31Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241118191820 2024/11/18 19:18:20 1) Name of the substation and Time: 220KV Park Street, 19:13Hrs. 2) Name of element tripped/restored: 33KV I/C-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241118183827 2024/11/18 18:38:27 1) Name of the substation and Time: 220 kv park stareet @ 17.54 2) Name of element tripped/restored: 33 I/C 2 3) Relay Annunciation: Any trip oc R ph ,EF,86 4) Details of physically damaged equipment: monkey jump 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241118054806 2024/11/18 05:48:06 1) Name of the substation and Time: 220kV Naraina at 02:40 Hrs. 2) Name of element tripped/restored: 220kV Dwarka Ckt#02 No load was affected. 3) Relay Annunciation: At Naraina end- Any trip, Y-phase, Z-1, A/R block, 86. At Dwarka end- Z-1, B-phase, IB-25.99KA, Dist. 0.5KM. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: LOad shared by 220kV Dwarka Ckt#01. 6) Any other relevant information: NA Regards, Delhi SLDC 20241118054234 2024/11/18 05:42:34 1) Name of the substation and Time: 220kV Mehrauli at 00:25 Hrs. 2) Name of element tripped/restored: 220kV Tuglakabad Ckt#01 tripped on Diff. trip, Y-phase, Dist. 11.90KM. No load was affected. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Load shared by 220kV Tuglakabad Ckt#02. 6) Any other relevant information: NA Regards, Delhi SLDC 20241118011549 2024/11/18 01:15:49 1) Name of the substation and Time: 220kV SOW at 00:36 Hrs. 2) Name of element tripped/restored: 220kV Geeta Colony Ckt#01 No load was affected. 3) Relay Annunciation: At 220kV SOW- Y-Phase, Diff. trip, A/R lockout, 86ABC, Dist.-6.092KM. At 220kV Geeta Colony- A/R, 86B, Dist.938.6M, IA-1.5kA, IB-9.5kA and IC-1.1KA. CB did not trip from geeta colony end. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Load shared by 220kV SOW-GC Ckt#02. 6) Any other relevant information: NA Regards, Delhi SLDC 20241117205031 2024/11/17 20:50:31 1) Name of the substation and Time: Narela at 19:55 Hrs. 2) Name of element tripped/restored: 66kV I/C-I, II and III tripped on 86. Approx. 100MW load was affected. At 20:10 Hrs. 66kV I/C-I, II and III were charged. 3) Relay Annunciation: 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Informed to Discom to shift the load. 6) Any other relevant information: 66kV A7 Ckt-I did not trip however relay operated. Relay - Diff. trip, RYB Phase, E/F, PIFF intertrip, Dist.-3.455KM. CB of 66kV A7 ckt-I tripped manually and other feeders load normalized. Regards, Delhi SLDC 20241114201221 2024/11/14 20:12:21 1) Name of the substation and Time: 220kV Rohini-I S/stn at 19:53 Hrs 2) Name of element tripped/restored: 100MVA,220/66kV Pr Trf no-IV with 66kV I/C no-IV 3) Relay Annunciation: Differential Protection A, B, C operated, HV REF trip, O/C, E/F, 86 A/B operated. 4) Details of physically damaged equipment: B Phase 220kV LA damaged. 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20241114171854 2024/11/14 17:18:54 1) Name of the substation and Time: 220KV Gopal Pur, 16:58Hrs. 2) Name of element tripped/restored: 100MVA-II along with 66KV I/C-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241114165411 2024/11/14 16:54:11 1) Name of the substation and Time: 220KV Gopal Pur, 16:18Hrs. 2) Name of element tripped/restored: 66KV DMRC restored after shifting from AIS to GIS 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241114165221 2024/11/14 16:52:21 1) Name of the substation and Time: 220KV Kashmere Gate, 16:24Hrs. 2) Name of element tripped/restored: 220KV SOW-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241114151346 2024/11/14 15:13:46 1) Name of the substation and Time: 220KV Kashmere Gate, 14:32Hrs. 2) Name of element tripped/restored: 220KV SOW-II tripped 3) Relay Annunciation: R-Phase, Differential and 86 at Kashmere Gate end and R-Phase, Differential, Zone-1, AR Lockout, 86, F/L - 80.03m and F/C, R-Phase - 24.44KA at SOW end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Bus-Coupler charged at 14:34Hrs. at Kashmere Gate and supply restored 6) Any other relevant information: Total load effected - 20MW for 02 Minutes Regards, Delhi SLDC 20241114131924 2024/11/14 13:19:24 1) Name of the substation and Time: 220KV Gopal Pur, 13:02Hrs. 2) Name of element tripped/restored: 220KV Mandola-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241114085622 2024/11/14 08:56:22 1) Name of the substation and Time: 220KV SOW at 07:52Hrs 2) Name of element tripped/restored: 220KV Geeta colony-1 3) Relay Annunciation: Geeta colony side= 86A,E/F STAGE-1, ZONE-1,Ph-A,3.06km, CB auto reclosed. SOW side= z-1,ph-r,86,diff trip, dist trip, auto reclosed lockout, 3.576KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load handeled by other circuit 6) Any other relevant information: Restored at 08:22HRS. Regards, Delhi SLDC 20241114085109 2024/11/14 08:51:09 1) Name of the substation and Time: 220KV Gopalpur at 07:52Hrs. 2) Name of element tripped/restored: 100MVA-1 (66kv) 3) Relay Annunciation: 220kv side= 96T,86,186 Incomer side=86A,86B 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load normalised throuth Bus coupler 6) Any other relevant information: - Regards, Delhi SLDC 20241114065448 2024/11/14 06:54:48 1) Name of the substation and Time: 220KV Gopalpur at 06:27Hrs. 2) Name of element tripped/restored: 220kv Mandola Ckt-1 3) Relay Annunciation: Auto reclosed Y ph. tripp,86 ABC, FL-13.57 Km, Ia 1.504 KA, Ib 1.33 KA, Ic 1.21 KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load Normalised through SOW 6) Any other relevant information: - Regards, Delhi SLDC 20241114062500 2024/11/14 06:25:00 1) Name of the substation and Time: 220KV BTPS 2) Name of element tripped/restored: Trip at 04:04Hrs. Restored at 06:18Hrs. 3) Relay Annunciation: Phase to Ground Fault Y-N gen. tripp,Z-I,YPh.,FC-20.36 KA,Dist. 3.21 KA. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Both Tripping and restoration details are mentioned Regards, Delhi SLDC 20241113184825 2024/11/13 18:48:25 1) Name of the substation and Time: 400 KV Harsh Vihar/18:11 Hrs. 2) Name of element tripped/restored: 315 MVA ICT-1 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20241113183714 2024/11/13 18:37:14 1) Name of the substation and Time: 400KV Bamnauli, 14:16Hrs. 2) Name of element tripped/restored: CB No 2352 of 315MVA ICT-IV restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241113183547 2024/11/13 18:35:47 1) Name of the substation and Time: 400KV Bamnauli, 12:14Hrs. 2) Name of element tripped/restored: CB No. 2352 of 315MVA ICT-IV tripped 3) Relay Annunciation: No indication 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241113183226 2024/11/13 18:32:26 1) Name of the substation and Time: 220KV Kanjhawala, 12:23Hrs. 2) Name of element tripped/restored: 220KV Mundka restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241113183101 2024/11/13 18:31:01 1) Name of the substation and Time: 400KV Bawana, 13:39Hrs. 2) Name of element tripped/restored: CB No. 1652 of 400KV Maharani Bagh-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241113182829 2024/11/13 18:28:29 1) Name of the substation and Time: 220KV BTPS, 12:47Hrs. 2) Name of element tripped/restored: 220KV Alwar Mi restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241113182535 2024/11/13 18:25:35 1) Name of the substation and Time: 220KV BTPS, 10:41Hrs. 2) Name of element tripped/restored: 220KV Ballabhgarh-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241113182356 2024/11/13 18:23:56 1) Name of the substation and Time: 220KV Naraina, 15:28Hrs. 2) Name of element tripped/restored: 220KV Dwarka-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241113182213 2024/11/13 18:22:13 1) Name of the substation and Time: 220KV SGTN, 15:15Hrs. 2) Name of element tripped/restored: 220KV Shalimaar Bagh-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241113182041 2024/11/13 18:20:41 1) Name of the substation and Time: 220KV Gopal Pur, 13:40Hrs. 2) Name of element tripped/restored: 100MVA-II along with 66KV I/C-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241113181912 2024/11/13 18:19:12 1) Name of the substation and Time: 220KV Gopal Pur, 13:15Hrs. 2) Name of element tripped/restored: 220KV Mandola-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241113080820 2024/11/13 08:08:20 1) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: At 08:00Hrs 220KV PPGJ-Geeta Colony ckt-II, 100MVA T/F-II and 220KV B/C charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113072550 2024/11/13 07:25:50 1) Name of the substation and Time: Bamnauli 2) Name of element tripped/restored: At 07:02Hrs 220KV PPK-1 ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113072425 2024/11/13 07:24:25 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 06:50Hrs 220KV Tughlakabad ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113072048 2024/11/13 07:20:48 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 06:42Hrs 220KV Rohtak Road ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113071650 2024/11/13 07:16:50 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: At 03:03Hrs 220KV Mandaula ckt-I charged. At 05:52Hrs 220KV Mandaula ckt-II charged. At 05:54Hrs 220KV Mandaula ckt-IV charged. At 06:28Hrs 220KV Mandaula ckt-III charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113070523 2024/11/13 07:05:23 1) Name of the substation and Time: BTPS 2) Name of element tripped/restored: At 05:56Hrs 220KV Ballabgarh ckt-II tripped on gen trip Z-1 Y-phase 2.7km Ib=19.1KA. At 05:57Hrs 220KV Alwar ckt tripped on Z-1 gen trip Y-phase 2.62km Iy=21.36KA. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113070010 2024/11/13 07:00:10 1) Name of the substation and Time: Naraina 2) Name of element tripped/restored: At 05:25Hrs 220KV Naraina-Dwarka ckt-II tripped. No load was affected. Relay at Naraina end are Z-1 Y-phase 4.5km. Relay at Dwarka end are Z-1 B-phase Ib=19.18KA 3.7km. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113064125 2024/11/13 06:41:25 1) Name of the substation and Time: Bamnauli 2) Name of element tripped/restored: At 04:52Hrs 220KV PPK-1 ckt-II tripped. No load was affected. Relay at Bamnauli end are Y-phase Z-2 AR 9.03km If=8.14KA. Relay at PPK-1 end are Y-phase distance relay and CB auto reclosed. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113063514 2024/11/13 06:35:14 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 04:47Hrs 220KV Mehrauli-Tughlakabad ckt-I tripped. No load was affected. Relay at Mehrauli end are Y-phase differential. Relay at Tughlakabad end are Line differential Y-phase 5.2km If=19.6km. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113063045 2024/11/13 06:30:45 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 03:50Hrs 220KV Rohtak Road ckt-II tripped on R-phase Z-1 8.8km. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113062831 2024/11/13 06:28:31 1) Name of the substation and Time: Rohini-1 2) Name of element tripped/restored: At 03:01Hrs 220KV SMB ckt-II tripped on 86. Ckt was at no load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113060921 2024/11/13 06:09:21 1) Name of the substation and Time: SMB 2) Name of element tripped/restored: At 03:37Hrs 220KV Bawana ckt-I tripped on Z-4 distance relay. CVT coming at SMB end. Load affected was 100MW. At 03:50Hrs 220KV Bawana ckt-I charged and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113055931 2024/11/13 05:59:31 1) Name of the substation and Time: SGTN 2) Name of element tripped/restored: At 03:35Hrs 220KV SMB ckt-I tripped on R-phase distance relay and bus bar relay operated. CVT coming at SGTN end. Load affected was 61MW. At 03:59Hrs 66KV B/C made ON and load normalised. At 04:04Hrs 220KV SGTN-SMB ckt-II tripped at SMB end on Y-phase Z-1 0.67km. Load affected was 15MW. At 04:30Hrs 220KV SMB ckt-I tried but did not hold. At 04:34Hrs 220KV SMB-SGTN ckt-II charged and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113055211 2024/11/13 05:52:11 1) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: At 02:38Hrs 220KV SOW ckt-II tripped on Z-2 Z-3 active group -I 8.8km. At 03:42Hrs 100MVA T/F-2 , 220KV PPGJ ckt-II and 220KV B/C tripped without indication. At 04:40Hrs 33KV B/C made ON and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113054440 2024/11/13 05:44:40 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: At 02:22Hrs 100MVA 220/66KV T/F-2 tripped on RYB-phase differential. Load affected was 14MW. At 02:33Hrs 220KV Mandaula ckt-I tripped on RYB-phase differential. Load affected was 61MW. At 02:58Hrs 220KV B/C made ON. At 03:11Hrs 66KV B/C made ON. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241113053331 2024/11/13 05:33:31 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: At 02:26Hrs 220KV Mandaula ckt-IV tripped on R-phase Z-1 8.6km Ir=7.9KA. At 02:29Hrs 220KV Mandaula ckt-II tripped on B-phase Z-1 RYB-phase differential 3.4km Ib=15.7KA. At 02:31Hrs 220KV Mandaula ckt-I tripped on R-phase Z-1 AR Lock out, CVT was coming at SOW end. At 02:43Hrs 220KV Mandaula ckt-III tripped on RYB-phase differential C-phase 4.0km Ia=2.3KA Ic=3.3KA. CB auto reclosed. Load affected was 232MW. At 03:03Hrs 220KV Mandaula ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241111131510 2024/11/11 13:15:10 1) Name of the substation and Time: 400 KV Bawana 12:04 hrs 2) Name of element tripped/restored: 220 KV Rohi-II Ckt.II 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20241111084228 2024/11/11 08:42:51 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) 400 kv munduka scada data supspect 2) 400 kv bawana scada data supspect 3) 220 kv tuglakabad scada data supspect 4) scada data supspect 5) scada data supspect 6) scada data supspect Regards, Delhi SLDC 20241111081042 2024/11/11 08:10:42 1) Name of the substation and Time: 220 kv Rohini-2 2) Name of element tripped/restored: 160 MVA TR-2 3) Relay Annunciation: Fire incident reported 4) Details of physically damaged equipment: 160 MVA TR-2 /fire 5) Immediate corrective/system normalization steps performed: Fire incident reported 6) Any other relevant information: Fire incident reported Regards, Delhi SLDC 20241111075955 2024/11/11 07:59:55 1) Name of the substation and Time: 400KV Bawana, 07:18Hrs. 2) Name of element tripped/restored: 220KV Rohini-II Ckt-II tripped 3) Relay Annunciation: Zone-2, R-Phase, 186A and 186B 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to DISCOM for shifting the load 6) Any other relevant information: Load also disappeared of 220KV Rohini-II Ckt-I Regards, Delhi SLDC 20241110235811 2024/11/10 23:58:11 1) Name of the substation and Time: 220 kv Tuglakabad 2) Name of element tripped/restored: 160 mva tr-1 3) Relay Annunciation: Gen TRIP,DIFF TRIP, 4) Details of physically damaged equipment: Y ph LA damaged ,monkey climbing 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: load managed by 160 mv tr-2 Regards, Delhi SLDC 20241109132810 2024/11/09 13:28:10 1) Name of the substation and Time: 400 kV Bawana at 09:32 Hrs 2) Name of element tripped/restored: 315 MVA ICT -4 Restored at 13:13 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 315 MVA ICT -4 Restored at 13:13 Hrs Regards, Delhi SLDC 20241109102405 2024/11/09 10:24:05 1) Name of the substation and Time: 400 kV Bawana at 09:32 Hrs 2) Name of element tripped/restored: 315 MVA ICT -4 3) Relay Annunciation: Transformer Bucholtz trip Bucholz Trip, LBB initiation, 86 master relay operated 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: NO load Effected Regards, Delhi SLDC 20241108105701 2024/11/08 10:57:01 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 10:30Hrs 100MVA T/F-II tripped on RYB Differential LV REF. B-phase LA of I/C got damaged. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241107121608 2024/11/07 12:16:08 1) Name of the substation and Time: Naraina 2) Name of element tripped/restored: At 10:16Hrs 220KV Dwarka ckt-II tripped on Z-1 R-phase 3.0km. No load was affected. At 11:55Hrs 220KV Dwarka ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241106085336 2024/11/06 08:53:36 1) Name of the substation and Time: 220 kv sarita vihar 2) Name of element tripped/restored: 220 kv maharani baag 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241105210111 2024/11/05 21:01:11 1) Name of the substation and Time: 220 KV Sarita Vihar 2) Name of element tripped/restored: 220 KV M. Bagh 3) Relay Annunciation: E/F,186 ABC,Z-I, ,R Ph.,Fault Current IA 5.75 KA, Fault Location-2.57 Km 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20241105153911 2024/11/05 15:39:11 1) Name of the substation and Time: 220KV Park Street, 15:15Hrs. 2) Name of element tripped/restored: 220/66KV, 100MVA-I charged at no-load, which was under shutdown from 07.10.24 (11:20Hrs.) 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241030173123 2024/10/30 17:31:23 1) Name of the substation and Time: Najafgarh 2) Name of element tripped/restored: At 17:25 Hrs. 220kV Bamnauli Ckt# I charged. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20241030164459 2024/10/30 16:44:59 1) Name of the substation and Time: At 220kV Najafgarh 2) Name of element tripped/restored: At 16:36 :- 100MVA Trafo.-I and 160MVA Trafo.-III charged. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20241030152523 2024/10/30 15:25:23 1) Name of the substation and Time: Najafgarh 2) Name of element tripped/restored: At 13:41Hrs supply failed of 220KV Bamnauli ckt-I. Relay at Bamnauli end are Z-1 R-phase 2.8km Ir=15.08KA. Load affected was 90MW. At 13:52Hrs 220KV B/C closed at Najafgarh, 100MVA T/F-1 and 160MVA T/F-3 tripped on Y-phase differential. At 14:03Hrs 66KV B/C closed and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241030005535 2024/10/30 00:55:35 1) Name of the substation and Time: 400kV Harsh Vihar s/stn at 23:52 Hrs 2) Name of element tripped/restored: 400kV Dadri Ckt-II restored at 00:52 hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20241030001549 2024/10/30 00:15:49 1) Name of the substation and Time: 400kV HVR, 23:52 Hrs 2) Name of element tripped/restored: 400kV Dadri Ckt-II 3) Relay Annunciation: PD operated , TC -I Faulty, pole disc operated 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20241029183517 2024/10/29 18:35:17 1) Name of the substation and Time: 220kV SMB, 18:17 Hrs 2) Name of element tripped/restored: 220 kV DMRC-I and 220kV BWN-I 3) Relay Annunciation: At 220 kV DMRC-I:- 86 and 220kV BWN-I:- Dist. prot. operated B-Ph and Y-Ph, Autoreclosed 86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220 kV CVT available from BWN and At 18:23 Hrs Restored ( system normalized) 6) Any other relevant information: Approx. load affected 121 MW Regards, Delhi SLDC 20241029183023 2024/10/29 18:30:23 1) Name of the substation and Time: 220kV PPK-II,13:22 HRS 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 18:24 Hrs 100 MVA Tx-II and At 18:25 Hrs 220 KV Dwarka Ckt-II charged. 6) Any other relevant information: - Regards, Delhi SLDC 20241029165115 2024/10/29 16:51:15 1) Name of the substation and Time: 220KV SOW, 16:45Hrs. 2) Name of element tripped/restored: 160MVA-IV charged at no-load, which was tripped at 17:39Hrs. on 13.10.24 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241029141229 2024/10/29 14:12:29 1) Name of the substation and Time: 220KV PPK-II, 13:22Hrs. 2) Name of element tripped/restored: 220KV Dwarka-II and 100MVA-II along with 66KV I/C-II tripped 3) Relay Annunciation: 220KV Dwarka-II tripped due to General Trip, Differential Trip, B-Phase, 86A, 86B and 86CS at PPK-II end and PD operated and Distance Protection operated at Dwarka end. 100MVA-II tripped due to Distance Protection, B-Phase, B-Phase Hisat Trip, 86 and its B-Phase LA damaged and 66KV I/C-II tripped without any indication. 4) Details of physically damaged equipment: B-Phase LA damaged of 100MVA-II 5) Immediate corrective/system normalization steps performed: Informed to DISCOM for shifting the load at 13:22Hrs. 220KV Bamnauli-II charged and supply restored at 13:27Hrs. 6) Any other relevant information: Nil Regards, Delhi SLDC 20241028121426 2024/10/28 12:14:26 1) Name of the substation and Time: 400KV Bawana, 12:00Hrs. 2) Name of element tripped/restored: 315MVA-IV restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241028111039 2024/10/28 11:10:39 1) Name of the substation and Time: 400KV Bawana, 10:46Hrs. 2) Name of element tripped/restored: 315MVA-IV tripped 3) Relay Annunciation: GRA Trip, GRB Trip and 86 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Transformers are already parallel 6) Any other relevant information: Nil Regards, Delhi SLDC 20241024195341 2024/10/24 19:53:41 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: At 18:07 Hrs.: 33kV I/C-I and II tripped. Approx. 77MW load was affected. At 18:38 Hrs. : 33kV I/C-I charged. At 18:43 Hrs. : 33kV I/C-II charged. 3) Relay Annunciation: At 33kV I/C-I : Any trip, O/C st-I, O/C R-Phase, 86. At 33kV I/C-II : Any trip, O/C St-I, O/C B-Phase, E/F st-I, 86. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Informed to Discoms for shifting the load. 6) Any other relevant information: NA Regards, Delhi SLDC 20241022210234 2024/10/22 21:02:34 1) Name of the substation and Time: 220KV Lodhi Road, 20:50Hrs. 2) Name of element tripped/restored: 220KV Maharani Bagh-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241022194259 2024/10/22 19:42:59 1) Name of the substation and Time: 220KV Naraina, 19:36Hrs. 2) Name of element tripped/restored: 100MVA-III charged at no-load, which was tripped at 12:48Hrs. on 09.10.24 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241022173640 2024/10/22 17:36:40 1) Name of the substation and Time: 220kV Lodhi Road 2) Name of element tripped/restored: At 16:58 Hrs. 220kV Maharani Bagh Ckt#II tripeed. 3) Relay Annunciation: At Lodhi Road:- Z-I distance operated and 86B. At Maharani Bagh: Dist. Trip 3-phase, E/F trip, IL3=22.85kA, Dist.2.5KM. 4) Details of physically damaged equipment: B-phase 220kV LA got damaged at lodhi road end. 5) Immediate corrective/system normalization steps performed: 220kV B/C switched ON at lodhi road at 17:05 Hrs. 6) Any other relevant information: Approx. 34MW load was affected. Regards, Delhi SLDC 20241022042311 2024/10/22 04:23:11 1) Name of the substation and Time: 220kV PPK-II S/stn at 04:03 Hrs 2) Name of element tripped/restored: 220kV Bamnauli Ckt-I 3) Relay Annunciation: Main-II protection optd fail at 220kV PPK-II S/stn . Main-II, Diff Trip, 86 A,B,C ,86 T, B phase. Main-I, Zone-I, 186 A and B, Autoreclose, B phase. Fault location 7.758 kM, Fault current-12.12kAmp at 400kV Bamnauli S/stn 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Idle circuit hence No Load affected Regards, Delhi SLDC 20241020170651 2024/10/20 17:06:51 1) Name of the substation and Time: 220KV Ridge Valley, 17:00Hrs. 2) Name of element tripped/restored: 160MVA-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241020112531 2024/10/20 11:25:31 1) Name of the substation and Time: 220KV Ridge Valley, 11:15Hrs. 2) Name of element tripped/restored: 160MVA-I tripped 3) Relay Annunciation: General Trip, REF, Differential RYB Phase and 86 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to DISCOM for shifting the load. 6) Any other relevant information: Nil Regards, Delhi SLDC 20241017174926 2024/10/17 17:49:26 1) Name of the substation and Time: 220 kv mehrouli @17.44 2) Name of element tripped/restored: 220 kv tuglakabad ckt-2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241017123529 2024/10/17 12:35:29 1) Name of the substation and Time: 220kV Mehrauli S/stn at 11:56 Hrs 2) Name of element tripped/restored: 220kV Tuglakabad Ckt-II 3) Relay Annunciation: At Mehrauli S/stn-Line Diff, R phase, Fault current-14.323 kAmp, Fault location-1.8kM. At Tuglakabad S/stn- General Trip, R phase initiate, Three Phase initiate, Line diff, Fault current-12.271 kAmp, Fault location-12.7 kM. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: System normalized through 220kV Vasant kunj Ckt- I and II at 11:58 Hrs. 6) Any other relevant information: Load affected Apprx.-100 Approx. Regards, Delhi SLDC 20241016215010 2024/10/16 21:50:10 1) Name of the substation and Time: Rohini-I 2) Name of element tripped/restored: 100MVA Transformer#I charged at 21:33 Hrs. 66kV Incomer of 100MVA Tx-I charged at 21:35 Hrs. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20241016152108 2024/10/16 15:21:08 1) Name of the substation and Time: 220kV RHN-I, 14:54 Hrs 2) Name of element tripped/restored: 100 MVA Tx-I alongwith 66kV I/C-I 3) Relay Annunciation: Differntial R,Y and B-Phase Trip, REF HV trip, 86A, 86B 4) Details of physically damaged equipment: B-Ph HV LA damaged( Blast) 5) Immediate corrective/system normalization steps performed: Load has been shared others Txs 6) Any other relevant information: No load affected Regards, Delhi SLDC 20241013190633 2024/10/13 19:06:33 1) Name of the substation and Time: 220kV South of wazirabad, 17:39 Hrs 2) Name of element tripped/restored: 160 MVA -IV alongwith 66kV I/C-IV 3) Relay Annunciation: At 160 MVA Tx- DC fail, relay unhealthy HV, LV REF operated, CB TC-I and II unhealthy, trafo trouble trip Alarm, Buchz alarm , WTI alarm, At 66kV I/C-IV- DC -I and II fail and relay unhealthy 4) Details of physically damaged equipment: HV B-Ph bushing got damaged and caught fire 5) Immediate corrective/system normalization steps performed: Informed to discom for load shifting to other S/stn. At 18:28 Hrs 66kV B/C Put ON 6) Any other relevant information: Load affected approx. 65 MW. Regards, Delhi SLDC 20241013184923 2024/10/13 18:49:23 1) Name of the substation and Time: 220 kV Park street :- 16:45 Hrs 2) Name of element tripped/restored: 1) 33 kV I/C-I charged at 18:25 Hrs 2) 33 kV I/C -II charged at 18:32 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 1) 33 kV I/C-I charged at 18:25 Hrs 2) 33 kV I/C -II charged at 18:32 Hrs Regards, Delhi SLDC 20241013171341 2024/10/13 17:13:41 1) Name of the substation and Time: 220KV Park Street, 16:45Hrs. 2) Name of element tripped/restored: 33KV I/C-I and II tripped 3) Relay Annunciation: Any Trip, 86, O/C B-Phase, O/C ST1 and E/F ST1 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to DISCOMs for shifting the load. 6) Any other relevant information: Monkey flash on 33KV Shankar Road-II Regards, Delhi SLDC 20241013160022 2024/10/13 16:00:22 1) Name of the substation and Time: 220KV Sarita Vihar, 15:22Hrs. 2) Name of element tripped/restored: 220KV Pragati (already isolated from Tower No. 12) tripped 3) Relay Annunciation: Distance Protection Zone-1, B-Phase, F/L - 3.15Km and F/C, B-Phase - 18.78KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241013140704 2024/10/13 14:07:04 1) Name of the substation and Time: 220KV PPG, 14:00Hrs. 2) Name of element tripped/restored: 220KV Geeta Colony-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20241013131933 2024/10/13 13:19:33 1) Name of the substation and Time: 220KV PPG, 12:39Hrs. 2) Name of element tripped/restored: 220KV Geeta Colony-I tripped 3) Relay Annunciation: Differential Trip, R-Phase, 186, F/L - 5.916Km and F/C, R-Phase - 857.4A at PPG end and R-Phase, Zone-1, F/L - 5.76Km and F/C, R-Phase - 10.34KA at Geeta Colony end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuits are already parallel 6) Any other relevant information: Nil Regards, Delhi SLDC 20241012235627 2024/10/12 23:56:27 1) Name of the substation and Time: 220KV Gopalpur and 23:04Hrs. 2) Name of element tripped/restored: Mandola Ckt No-1 3) Relay Annunciation: auto reclosed, Differential, R-Ph trip 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load shifted AT SOW-2 6) Any other relevant information: - Regards, Delhi SLDC 20241010141524 2024/10/10 14:15:24 1) Name of the substation and Time: Bamnauli, Time-14:04 2) Name of element tripped/restored: 500 MVA ICT-II, 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20241010130225 2024/10/10 13:02:25 1) Name of the substation and Time: Bamnauli and 12:14 hrs. 2) Name of element tripped/restored: 500 MVA TX.II along with I/C-II 3) Relay Annunciation: PRV, 86 Gr. A and B, VT fuse fail (297) 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Maintenance staff checking the Transformer 6) Any other relevant information: Nil Regards, Delhi SLDC 20241009210254 2024/10/09 21:02:54 1) Name of the substation and Time: 220kV Gazipur @20.45 2) Name of element tripped/restored: 160 mva Tr-3 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241009193750 2024/10/09 19:37:50 1) Name of the substation and Time: 220 kv gopal pur @19.29 2) Name of element tripped/restored: 100 mva Tr-1 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241009163259 2024/10/09 16:32:59 1) Name of the substation and Time: 220kV Gopal pur, 16:09 hrs 2) Name of element tripped/restored: 100 MVA Tx-Ialongwith 33kV I/C-I 3) Relay Annunciation: Diff. ABC , 86, 186 and intertripping 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220kV B/c put on at 16:10 Hrs 6) Any other relevant information: Affected load 29 MW for one minut. Regards, Delhi SLDC 20241009160804 2024/10/09 16:08:04 1) Name of the substation and Time: Test1 2) Name of element tripped/restored: Test1 3) Relay Annunciation: Test1 4) Details of physically damaged equipment: Test1 5) Immediate corrective/system normalization steps performed: Test1 6) Any other relevant information: Test1 Regards, Delhi SLDC 20241009151131 2024/10/09 15:11:31 1) Name of the substation and Time: 220 kV Gazipur :- 14:47 Hrs 2) Name of element tripped/restored: 160 MVA Ptx-III 3) Relay Annunciation: Without Indication 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No Load effected Regards, Delhi SLDC 20241009140735 2024/10/09 14:07:35 1) Name of the substation and Time: 220 kV Naraina 12:48 Hrd 2) Name of element tripped/restored: 100 MVA PTx-III 3) Relay Annunciation: LV REF and 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: NO load effected Regards, Delhi SLDC 20241008152839 2024/10/08 15:28:39 1) Name of the substation and Time: 220 kV Tkd :- 12:59 Hrs 2) Name of element tripped/restored: 220 MLI ckt-I charged at 14:00 Hrs and 220 MLI ckt-II charged at 14:47 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 MLI ckt-I charged at 14:00 Hrs and 220 MLI ckt-II charged at 14:47 Hrs Regards, Delhi SLDC 20241008152430 2024/10/08 15:24:31 1) Name of the substation and Time: 220 kV Tuaglakabad:-12:59 hrs 2) Name of element tripped/restored: 220 Maharuli Ckt-I and II 3) Relay Annunciation: MLI-I86A,B.Line Diff. Dist. 15.3 KM at Tubd end ,Mhli-II 17.7 KM , 86 AB ,Ir-1.1KA TKD end TKD NO tripping at Mhli ckt-I , TKD ckt-IIR.Y,B ph, Z-2, F/L-0.9KM , 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: load take on VKJ ckt normalized 6) Any other relevant information: Aproxm load effected 150 MW Regards, Delhi SLDC 20241007105743 2024/10/07 10:57:43 1) Name of the substation and Time: test 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: test Regards, Delhi SLDC 20241005161958 2024/10/05 16:20:01 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) SCADA REAL TIME CLOCK TIME NOT UPDATETING 2) NA 3) NA 4) NA 5) NA 6) NA Regards, Delhi SLDC 20241005123406 2024/10/05 12:34:06 1) Name of the substation and Time: test 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: test Regards, Delhi SLDC 20241004192158 2024/10/04 19:21:58 1) Name of the substation and Time: testing 2) Name of element tripped/restored: testing 3) Relay Annunciation: testing 4) Details of physically damaged equipment: testing 5) Immediate corrective/system normalization steps performed: testing 6) Any other relevant information: testing Regards, Delhi SLDC 20241004150247 2024/10/04 15:02:47 1) Name of the substation and Time: test 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: test Regards, Delhi SLDC 20241004145805 2024/10/04 14:58:05 1) Name of the substation and Time: test 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: test Regards, Delhi SLDC 20241004143801 2024/10/04 14:38:46 1) Name of the substation and Time: test 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: test Regards, Delhi SLDC 20241003142255 2024/10/03 14:23:34 1) Name of the substation and Time: At KGT 2) Name of element tripped/restored: 220KV SOW Ckt-II and restored at 13:52 Hrs. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: After patrolling ckt was charged Regards, Delhi SLDC 20241003124935 2024/10/03 12:50:14 1) Name of the substation and Time: At 220KV KGT S/stn. at 12:30Hrs. 2) Name of element tripped/restored: 220KV SOW Ckt-II 3) Relay Annunciation: Circuit Trip Both at end. KGT side- Diff, 186RYB, R-Ph trip SOW Side- R-Ph, Diff, AR Lockout, Trip Ph AN, Dist Start Z2-Z3, 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load Normalised through Bus coupler 6) Any other relevant information: - Regards, Delhi SLDC 20241001202137 2024/10/01 20:21:40 1) Name of the substation and Time: 220 kV okhla @20.14 2) Name of element tripped/restored: 220 kv tuglakabad ckt-1 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20241001152454 2024/10/01 15:25:01 1) Name of the substation and Time: 220kV TKD 2) Name of element tripped/restored: 220kV Okhla Ckt-I 3) Relay Annunciation: Gen. trip, faulty Phase R, Zone-I, Dist. 3.6KM, F/C-18.66KAmp at TKD end and Zone-I, R-Ph 86 at Okhla end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20241001152120 2024/10/01 15:21:31 1) Name of the substation and Time: 220kV Sarita Vihar, 14:59 Hrs 2) Name of element tripped/restored: 100 MVA Tx-III 3) Relay Annunciation: HV REF 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20241001152028 2024/10/01 15:21:17 1) Name of the substation and Time: 220kV Sarita Vihar, 14:59 Hrs 2) Name of element tripped/restored: 100 MVA Tx-III 3) Relay Annunciation: HV REF 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20241001123128 2024/10/01 12:32:11 1) Name of the substation and Time: 220kV Kashmiri Gate S/stn 2) Name of element tripped/restored: 220kV SOW-Kashmiri Gate Ckt-II charged at 12:28 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20241001113502 2024/10/01 11:35:24 1) Name of the substation and Time: 220kV Kashmiri Gate S/stn at 10:56 Hrs 2) Name of element tripped/restored: 220kV SOW-Kashmiri gate gate-II 3) Relay Annunciation: R phase Trip, Diff trip, Dist-Zone-I, AR lockout , Fault location--1.618kM at SOW s/stn R phase Trip, Three phase relay, 195, A/R, 186 A, B , Backup protection Optd at Kashmiri Gate S/stn 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: System normalised through 220kV Bus coupler at 10:57 Hrs 6) Any other relevant information: Load affected-69 MW approx Regards, Delhi SLDC 20241001101808 2024/10/01 10:18:53 1) Name of the substation and Time: 220kV Tuglakabad S/stn 2) Name of element tripped/restored: 220kV tuglakabad -Okhla Ckt-I tripped at 06:20 Hrs and charged at 10:14 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20241001064925 2024/10/01 06:49:54 1) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: At 06:20 Hrs. 220kV Okhla Ckt#01 tripped. 3) Relay Annunciation: At 220kV Tughlakabad - General trip, Z-I, R-Phase trip, Dist. 3.60KM and IR=9.891kA. At 220kV Okhla - Z-I trip, R-Phase, 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: No load was affected. Regards, Delhi SLDC 20240929161552 2024/09/29 16:15:58 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 15:05 Hrs. 220kV Rohtak Road Ckt. # 02 tripped on Z-I, 86, ABC Phase, Dist-15.26KM, IB-4.061kA, IC-3.945kA. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: No load was affected. Regards, Delhi SLDC 20240928151532 2024/09/28 15:15:37 1) Name of the substation and Time: Ridge Valley 2) Name of element tripped/restored: At 13:52Hrs 220KV Bus Bar Relay operated leading to tripping of 160MVA T/F-1, 220KV RK Puram ckt I and II and 220KV Naraina. Load affected was 150MW (Ridge Valley and Naraina) At 14:10Hrs 220KV RK Puram ckt-II, 220KV Naraina and 160MVA T/F-1 charged and load normalised. At 14:20Hrs 220KV RK Puram ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240928151517 2024/09/28 15:15:28 1) Name of the substation and Time: Ridge Valley 2) Name of element tripped/restored: At 13:52Hrs 220KV Bus Bar Relay operated leading to tripping of 160MVA T/F-1, 220KV RK Puram ckt I and II and 220KV Naraina. Load affected was 150MW (Ridge Valley and Naraina) At 14:10Hrs 220KV RK Puram ckt-II, 220KV Naraina and 160MVA T/F-1 charged and load normalised. At 14:20Hrs 220KV RK Puram ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240928070047 2024/09/28 07:00:51 1) Name of the substation and Time: 220kV Okhla S/stn tripped at 06:20 Hrs 2) Name of element tripped/restored: 33kV Incomer no-III 33kV Incomer no-IV 33kV Incomer no-V charged at 06:42 Hrs 3) Relay Annunciation: 33kV Incomer no-III, Any trip O/C, Y phase , 86 33kV Incomer no-IV, Any trip, O/C, ST1, O/C Y phase , 86 33kV Incomer no-V, Any trip, O/C R phase, Y phase, 86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Informed Discom to shift the load at their end. 6) Any other relevant information: Load affected 55MW Approx Regards, Delhi SLDC 20240926091052 2024/09/26 09:11:02 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: At 08:44Hrs 33KV I/C-II tripped on O/C R-phase E/F. Load affected was approx 30MW. At 09:02Hrs 33KV I/C-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240926084145 2024/09/26 08:42:15 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: At 07:54Hrs 33KV I/C-I tripped on O/C R-phase E/F. Load affected was 30MW. At 08:21Hrs 33KV I/C-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240925201025 2024/09/25 20:10:55 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 20:01Hrs 220KV Mandaula ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240925132917 2024/09/25 13:29:26 1) Name of the substation and Time: At Sarita Vihar(12:44hrs) 2) Name of element tripped/restored: 220KV BTPS ckt-I. 3) Relay Annunciation: Z-1, B phase, D/P, 20.9KA. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: Load taken by other parallel ckt. 6) Any other relevant information: Tripped from both ends. Regards, Delhi SLDC 20240924153224 2024/09/24 15:32:25 1) Name of the substation and Time: At 220KV Najafgarh 2) Name of element tripped/restored: 100MVA-1, 160MVA-3 AND 100MVA-4 Charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 01. No-1 Charge at 15:10Hrs. 02. No-3 Charge at 15:06Hrs. 03. No-4 Charge at 15:08Hrs. And All Incomers charge at 15:12Hrs. Regards, Delhi SLDC 20240924152828 2024/09/24 15:28:30 1) Name of the substation and Time: At Najafgarh @ 13:58Hrs. 2) Name of element tripped/restored: 100MVA No-1, 160MVA No-3 and 100MVA-4 3) Relay Annunciation: 86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Discom asked to changeover the Load 6) Any other relevant information: - Regards, Delhi SLDC 20240924152006 2024/09/24 15:20:37 1) Name of the substation and Time: At Najafgarh @ 13:58 Hrs 2) Name of element tripped/restored: 220KV Bamanauli-II 3) Relay Annunciation: Without Indication 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Discom asked to changeover the Load 6) Any other relevant information: - Regards, Delhi SLDC 20240924144452 2024/09/24 14:45:16 1) Name of the substation and Time: At Narela @ 12:57 Hrs 2) Name of element tripped/restored: 220KV Mandola-I 3) Relay Annunciation: Y and B-Ph, D/P, 86ABC, 50ms, 154.1m 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load Taken through DSIIDC BWN 6) Any other relevant information: - Regards, Delhi SLDC 20240924144112 2024/09/24 14:41:18 1) Name of the substation and Time: At Narela at 12:55Hrs. 2) Name of element tripped/restored: 220KV Mandola Circut-II 3) Relay Annunciation: Trip B-Ph, Z-1, 86AB, 175ms, 8.474KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load taken through DSIIDC Bawana 6) Any other relevant information: - Regards, Delhi SLDC 20240924144043 2024/09/24 14:41:08 1) Name of the substation and Time: At Narela at 12:55Hrs. 2) Name of element tripped/restored: 220KV Mandola Circut-II 3) Relay Annunciation: Trip B-Ph, Z-1, 86AB, 175ms, 8.474KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load taken through DSIIDC Bawana 6) Any other relevant information: - Regards, Delhi SLDC 20240923071847 2024/09/23 07:19:15 1) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 06:09 Hrs. 33kV Incomer No.3 tripped on any trip O/C Y-Ph, O/C B-Ph and 86. At 06:09 Hrs. 33kV Incomer No.4 tripped on any trip O/C Y-Ph, O/C B-Ph and 86. At 06:09 Hrs. 33kV Incomer No.5 tripped on any trip O/C B-Ph and 86. Approx. 65MW load was affected. At 06:28 33kV Incomer No.5 charged. At 06:35 33kV Incomer No.3 and 4 charged. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240923070929 2024/09/23 07:09:57 1) Name of the substation and Time: Parkstreet 2) Name of element tripped/restored: At 23:31 Hrs. 33kV Incomer No-I tripped on O/C stage-I, Y-phase, E/F stage-I, 86. Approx. 29MW load was affected. At 00:03 Hrs. 33kV Incomer No.I charged. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240922150946 2024/09/22 15:10:15 1) Name of the substation and Time: 400 kV Bawana :- 15:05 Hrs 2) Name of element tripped/restored: 100 MVA Ptrx charged at 15:05 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 100 MVA Ptrx charged at 15:05 Hrs Regards, Delhi SLDC 20240922131311 2024/09/22 13:13:18 1) Name of the substation and Time: 400/220kV Bawana S/stn at 12:41 Hrs 2) Name of element tripped/restored: 100MVA, 220/66kV Power Transformer with 66kV Incomer 3) Relay Annunciation: 86 A, 86B 4) Details of physically damaged equipment: B phase conductor broken from 66kV CT clamp to isolator side 5) Immediate corrective/system normalization steps performed: Informed to TPDDL to shift the load at their End 6) Any other relevant information: 53 MW Approx Load afffected Regards, Delhi SLDC 20240922130943 2024/09/22 13:09:44 1) Name of the substation and Time: 400kV Bawana S/stn 2) Name of element tripped/restored: 100MVA Power Transformer with 66kV Incomer. 3) Relay Annunciation: 86 A,86B 4) Details of physically damaged equipment: B phase conductor broken from 66kV CT to Isolator side. 5) Immediate corrective/system normalization steps performed: Informed TPDDL to shift the load at their End 6) Any other relevant information: 53 MW approx load affected Regards, Delhi SLDC 20240922123159 2024/09/22 12:32:29 1) Name of the substation and Time: 400/220kV Bawana 2) Name of element tripped/restored: 220kV Bawana-Rohini-I Ckt-II charged at 12:28 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240922112508 2024/09/22 11:25:39 1) Name of the substation and Time: 400/220kV Bawana S/stn at 10:59 Hrs 2) Name of element tripped/restored: 220kV Bawana-Rohini-I Ckt-II 3) Relay Annunciation: R Phase Trip, Y phase Trip, Zone-I Dist 9.173 kM, Ta-Fault Cuurent 9.54 KAmp, Ib 9.016 kAmp at 400 kv Bawana S/stn Supply failed at Rohini-I S/stn 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: System normalized through 220kV Bus coupler at 11:02 Hrs 6) Any other relevant information: Load affected 84 MW approx. Regards, Delhi SLDC 20240921135219 2024/09/21 13:52:20 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: At 12:32 Hrs. 33kV Incomer-II tripped on any trip O/C stage-I, R-Phase and 86. Approx. 39MW load was affected. At 12:59 Hrs. 33kV Incomer-II charged. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240921135149 2024/09/21 13:52:12 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: At 12:32 Hrs. 33kV Incomer-II tripped on any trip O/C stage-I, R-Phase and 86. Approx. 39MW load was affected. At 12:59 Hrs. 33kV Incomer-II charged. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240921134402 2024/09/21 13:44:31 1) Name of the substation and Time: Najafgarh 2) Name of element tripped/restored: At 12:58 Hrs. 220kV Bamnauli Ckt-II Charged. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240921111902 2024/09/21 11:19:45 1) Name of the substation and Time: Najafgarh 2) Name of element tripped/restored: At 10:48 Hrs. 220kV Bamnauli Ckt-II tripped. No load was affected. 3) Relay Annunciation: At 220kV Najafgarh- Z-1, B-Phase, Dist. 4.37KM, IB-7.09kA. At 400kV Bamnauli- Y-B Phase Trip, 86A, B, C 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: na Regards, Delhi SLDC 20240918153836 2024/09/18 15:38:42 1) Name of the substation and Time: 220 kv mehrouli @15.20 2) Name of element tripped/restored: 220 kv dial -2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240918125413 2024/09/18 12:55:03 1) Name of the substation and Time: 22 kv tuglakabad @12.29 2) Name of element tripped/restored: 220 kv mehrouli ckt-1 and 2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240918125013 2024/09/18 12:50:13 1) Name of the substation and Time: 220 kv mehrouli @11.59 2) Name of element tripped/restored: 220 kv dial 2 3) Relay Annunciation: z1,17 ka 793 metre 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240918124844 2024/09/18 12:49:11 1) Name of the substation and Time: 220 kv tuglakabad @11.59 2) Name of element tripped/restored: 220 kv bvmehrouli ckt-1 and 2 3) Relay Annunciation: z2,BC trip,13.3 km 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: NA Regards, Delhi SLDC 20240917192531 2024/09/17 19:25:32 1) Name of the substation and Time: Gazipur 2) Name of element tripped/restored: At 18:30Hrs 220KV PPGJ ckt tripped on RYB-phase Z-1. No load was affected. CVT coming at Gazipur end. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240917191916 2024/09/17 19:19:22 1) Name of the substation and Time: Dial 2) Name of element tripped/restored: At 18:30Hrs 220KV Bamnauli ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240917191733 2024/09/17 19:17:42 1) Name of the substation and Time: IP 2) Name of element tripped/restored: At 18:30Hrs 220KV Pragati ckt-I tripped. No load was affected. At 19:07Hrs 220KV IP-Pragati ckt-I charged. 3) Relay Annunciation: Relay at IP end are R-phase Z-1 86. Relay at Pragati end are R-phase Z-1 1.187km If=5.9KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240917160012 2024/09/17 16:00:12 1) Name of the substation and Time: At Pragati(15:21)hrs. 2) Name of element tripped/restored: 220KV Parkstreet ckt-II. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 66KV Load at Parkstreet normalized. Regards, Delhi SLDC 20240917155830 2024/09/17 15:58:37 1) Name of the substation and Time: At Parkstreet(15:18)hrs. 2) Name of element tripped/restored: 220KV Pragati ckt-I. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240917155608 2024/09/17 15:56:37 1) Name of the substation and Time: At Pragati(15:05)hrs. 2) Name of element tripped/restored: 220KV Parkstreet ckt-II. 3) Relay Annunciation: 86R, 86Y, O/C, R phase. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: 66KV Load at Parkstreet affected. Regards, Delhi SLDC 20240917155036 2024/09/17 15:51:04 1) Name of the substation and Time: At Parkstreet(15:05)hrs. 2) Name of element tripped/restored: 220KV Pragati ckt-I. 3) Relay Annunciation: 86, O/C R phase . 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: Load of 220KV Dev Nagar and 33KV Load at Parkstreet affected. Regards, Delhi SLDC 20240917140719 2024/09/17 14:07:36 1) Name of the substation and Time: At Mehrauli(14:04)hrs. 2) Name of element tripped/restored: 220KV Tughlakabad ckt-II. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240917131809 2024/09/17 13:18:16 1) Name of the substation and Time: At DIAL(12;44)hrs. 2) Name of element tripped/restored: 220KV Bamnoli ckt-1. 3) Relay Annunciation: R phase, D/P, 13.5KM, 3.4KA fault. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: Load taken by other ckt. 6) Any other relevant information: none. Regards, Delhi SLDC 20240917115329 2024/09/17 11:54:04 1) Name of the substation and Time: At Mehrauli(11:23)hrs 2) Name of element tripped/restored: 220KV Tughalkabad ckt-II. 3) Relay Annunciation: D/P, A-N trip, Z-1, 2.904KM, RYB phase trip, differential operated. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other ckt. 6) Any other relevant information: none. Regards, Delhi SLDC 20240917112932 2024/09/17 11:29:52 1) Name of the substation and Time: At Rohini-1(10:42)hrs 2) Name of element tripped/restored: 100MVA-IV(220/66)KV. 3) Relay Annunciation: 86B,30H, SPR operated. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: TPDDL asked to C/O load. 6) Any other relevant information: none. Regards, Delhi SLDC 20240916150601 2024/09/16 15:06:07 1) Name of the substation and Time: At Sarita Vihar(14:12)hrs. 2) Name of element tripped/restored: 220KV BTPS -I. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240916114909 2024/09/16 11:49:48 1) Name of the substation and Time: At Sarita vihar(11:24)hrs 2) Name of element tripped/restored: 220KV BTPS ckt-1. 3) Relay Annunciation: D/P, B-phase trip, 2.323KA, 19.68KM. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: load taken by other parallel ckt. 6) Any other relevant information: none. Regards, Delhi SLDC 20240916071526 2024/09/16 07:15:56 1) Name of the substation and Time: 220 kv sow @ 15.09.2024 19.09 hrs 2) Name of element tripped/restored: 220 kv mandola ckt-2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240915170203 2024/09/15 17:02:08 1) Name of the substation and Time: 220kV Gopal Pur, 15:50 hrs 2) Name of element tripped/restored: 160 MVA tx-IV and 66kV I/C-IV and II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 16:39 hrs 160 MVA tx-IV charged and at 16:51 Hrs 66kV I/C-IV and II charged and system normalized 6) Any other relevant information: - Regards, Delhi SLDC 20240915163829 2024/09/15 16:38:57 1) Name of the substation and Time: 220kV Gopal Pur, 15:50 Hrs 2) Name of element tripped/restored: 160MVA Tx-IV with 66kV II/C-IV and 66kV I/C-II 3) Relay Annunciation: 160MVA Tx-I on W/O indication, 66kV II/C-IV and 66kV I/C-II on 195, 295, 96 both incomers and DC 1 fail (80C) 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: load affected approx. 89 MW Regards, Delhi SLDC 20240915161937 2024/09/15 16:20:07 1) Name of the substation and Time: 220kV SOW, 15:49 hrs 2) Name of element tripped/restored: 220kV Mandola-II 3) Relay Annunciation: Auto reclosed R and Y-Phase trip, Zone 1, Auto reclosed lockout, Trip phase AB, Dist. Start z1,z2,z3,F/duration51ms, F/location 6.3KM, Ia-11.48KA, Ib-11.88KA, Ic-364.2A, In-64.65A and CVT not available at SOW end and Both end trip 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240913143012 2024/09/13 14:30:19 1) Name of the substation and Time: Bawana 2) Name of element tripped/restored: At 13:43- 100MVA Trafo. charged. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240913125518 2024/09/13 12:55:47 1) Name of the substation and Time: Badarpur 2) Name of element tripped/restored: At 12:25 Hrs. - 220kV Ballabhgarh Ckt-II tripped. No load was affected. 3) Relay Annunciation: General Trip, Z-I, B-Phase, Dist.-6.71KM and IB-13.5kA. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240913124949 2024/09/13 12:50:33 1) Name of the substation and Time: Bawana 2) Name of element tripped/restored: At 12:15 Hrs. - 100MVA Tx tripped on 86B and 30M (PRV Trip). Approx. 53MW load was affected. Discoms have shifted their load. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240912062801 2024/09/12 06:28:08 1) Name of the substation and Time: 220kV Rohini-I S/stn 2) Name of element tripped/restored: 100MVA, 220/kV Power Transformer no-IV charged at 05:45 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240912044827 2024/09/12 04:48:57 1) Name of the substation and Time: 220Kv Rohini-I s/stn at 04:36 Hrs 2) Name of element tripped/restored: 100MVA, 220/66kV Power Transformer no-IV 3) Relay Annunciation: Trip relay operated, trouble trip, 30H SPR Operated, 86 A,B 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240911164556 2024/09/11 16:46:40 1) Name of the substation and Time: 220 kv RK PURAM @16.27 2) Name of element tripped/restored: 160 MVA TR-2 3) Relay Annunciation: while trf charging sparking noticed on transformer upper tank and Trf mannually switched off 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: nz Regards, Delhi SLDC 20240911150629 2024/09/11 15:06:42 1) Name of the substation and Time: 220 kv RK Puram@ 12.15 2) Name of element tripped/restored: 160MVA tr-2 3) Relay Annunciation: second harmoinic relay 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240910160859 2024/09/10 16:09:12 1) Name of the substation and Time: 220 kv shalimerbagh @@15.47 2) Name of element tripped/restored: 100 mva tr-3 along with i/c -3 3) Relay Annunciation: diff trip ,LV REF,86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 33 KV BUS COULPER ON 16.00 AFTER CHECKING YARD 6) Any other relevant information: NA Regards, Delhi SLDC 20240910154356 2024/09/10 15:44:06 1) Name of the substation and Time: 220KV Najafgarh, 14:38hrs. 2) Name of element tripped/restored: 220KV Kanjhawala restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240910154117 2024/09/10 15:41:23 1) Name of the substation and Time: 220KV Najafgarh, 12:40hrs. 2) Name of element tripped/restored: 220KV Kanjhawala tripped 3) Relay Annunciation: Differential Trip, RYB Phase, Zone-1 and F/L - 2.28Km 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuit is already on no load 6) Any other relevant information: Nil Regards, Delhi SLDC 20240910153736 2024/09/10 15:37:43 1) Name of the substation and Time: 220KV Park Street, 11:58Hrs. 2) Name of element tripped/restored: 220KV Pragati-I restored at 11:58Hrs. and 220KV Pragati-II restored at 11:55Hrs. 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240910153353 2024/09/10 15:34:00 1) Name of the substation and Time: 220KV Park Street, 11:53Hrs. 2) Name of element tripped/restored: 220KV Pragati-I and II tripped 3) Relay Annunciation: 220KV Pragati-I tripped due to Any Trip, O/C ST1, O/C Y-Phase and O/C B-Phase at Park Street end and no tripping found at Pragati end. 220KV Pragati-II tripped without any indication at Pragati end and no tripping found at Park Street end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to DISCOMs for shifting the load. 6) Any other relevant information: Total load effected BRPL - 29MW for 02 Minutes BYPL - 136MW for 05 Minutes NDPL - 24MW for 02 Minutes NDMC - No load effected Regards, Delhi SLDC 20240910152404 2024/09/10 15:24:33 1) Name of the substation and Time: 220KV Pragati, 12:16Hrs. 2) Name of element tripped/restored: 220KV Maharani Bagh (220KV Maharani Bagh-I) and 220KV Sarita Vihar (220KV Maharani Bagh-II) restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240910151952 2024/09/10 15:20:14 1) Name of the substation and Time: 220KV Pragati, 11:40Hrs. 2) Name of element tripped/restored: 220KV Maharani Bagh (220KV Maharani Bagh-I) tripped 3) Relay Annunciation: R-Phase, Zone-1, F/L - 5.096Km and F/C, R-Phase - 9.170KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Bus-Coupler charged at 11:44Hrs. 6) Any other relevant information: 220KV Sarita Vihar (220KV Maharani Bagh-II) put off due to overload Regards, Delhi SLDC 20240908182205 2024/09/08 18:22:28 1) Name of the substation and Time: 220kV Sarita Vihar, 18:06 Hrs 2) Name of element tripped/restored: 220kV MBG 3) Relay Annunciation: R,Y and B -Ph trip, Zone-1,Fault Location- 3.87 KM, Auto reclose , Dist. Prot. Operated 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240908063655 2024/09/08 06:36:58 1) Name of the substation and Time: 400KV Bamnauli, 06:03Hrs. 2) Name of element tripped/restored: 220KV PPK-II Ckt-II tripped 3) Relay Annunciation: 86A, 186A, 186B, R-Phase, Differential Trip, F/L - 19.48Km and F/C, R-Phase - 12.84KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuit is already on no-load 6) Any other relevant information: Nil Regards, Delhi SLDC 20240907162833 2024/09/07 16:28:35 1) Name of the substation and Time: 220kV Maharani Bagh S/stn at 15:37 Hrs 2) Name of element tripped/restored: 220kV Maharani Bagh-Gazipur Ckt-I restored at 16:24 Hrs 3) Relay Annunciation: 3 Ph group operated, 86 A,B,C, Ia-88.46 amp, Ib-110.4 amp,Ic-122 Amp, In-16.34 Amp 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240907162541 2024/09/07 16:25:43 1) Name of the substation and Time: 220kV Maharani Bagh S/stn at 15:37 Hrs 2) Name of element tripped/restored: 220kV Maharani-HCML Ckt-II. 3) Relay Annunciation: 3Ph, group operated AB, Dist pickup-L3-E, Dist loop-L3-E, Diff Trip Phase-C Location-61.5 Mtrs at Maharani Bagh end. 86 A, 86B, B phase diff Trip , B phase trip Zone-1 at HCML S/stn 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240907161045 2024/09/07 16:10:47 1) Name of the substation and Time: 220kV Pragati- SVR(MB-II) at 13:18 Hrs 2) Name of element tripped/restored: 220kV Pragati- SVR(MB-II) at 16:00 Hrs restored 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220kV Pragati- SVR(MB-II) at 16:00 Hrs restored Regards, Delhi SLDC 20240907143046 2024/09/07 14:30:53 1) Name of the substation and Time: 220kV Pragati 2) Name of element tripped/restored: 220kV Pragati- SVR(MB-II) at 13:18 Hrs Pragati-Maharani Bagh at 13:24 Hrs 3) Relay Annunciation: At Pragati end:- 186,186, Start phase CN, Zone-1, Dis-2.125kM, Ic-10.9kAmp,In-12.85kAmp Gneral trip Zone-II, Dist-3.9kM, L3-E, Ib-18.92kAmp at Maharani Bagh End. Pragati-Maharani Bagh at 13:24 Hrs on overcurrent 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: System Normalised through 220kV Bus coupler at Pragati S/stn and supply restored at 13:27 of Parkstreet I and II Ckt and 220kV Pragati-Maharani Bagh restored at 13:58Hrs. 6) Any other relevant information: Load affected 280 MW Regards, Delhi SLDC 20240907114320 2024/09/07 11:44:03 1) Name of the substation and Time: 220 kV Sarita Vihar:-10:52 Hrs 2) Name of element tripped/restored: 160 MVA Ptx-I with 66 kV I/C-I 3) Relay Annunciation: Oil level alaram ,Pressure low,86,295C 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 66 kV Bus coupler ON 6) Any other relevant information: NO Load effected Regards, Delhi SLDC 20240904130634 2024/09/04 13:07:12 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 12:33Hrs 220KV Tughlakabad-Mehrauli ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240904122712 2024/09/04 12:27:58 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 11:37Hrs 220KV Tughlakabad-Mehrauli ckt-II tripped while 220KV Tughlakabad-Mehrauli ckt-I was under shutdown. Load affected was 180MW. At 11:45Hrs load normalised through 220KV Vasant Kunj-Mehrauli ckt-I and II which is fed through Mahrani Bagh-Trauma Centra-RK Puram. 3) Relay Annunciation: Relay at Mehrauli end are Line Differential R-phase 23.3km If=12.3KA. Relay at Tughlakabad end are Z-2 R-phase Line differential 21.6km If=8.5KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240904040641 2024/09/04 04:06:44 1) Name of the substation and Time: 220kV IP, 03:00 Hrs 2) Name of element tripped/restored: 220kV PPG-I 3) Relay Annunciation: 86, DC supply fail in CR panel 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240903212339 2024/09/03 21:23:46 1) Name of the substation and Time: 220 kV Okhla :-18:36 Hrs 2) Name of element tripped/restored: 220/66 kv 160 MVA Trx no-I along with 66 kV I/C-I Charhed and load taken at 21:16 hrs and normalized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220/66 kv 160 MVA Trx no-I along with 66 kV I/C-I Charhed and load taken at 21:16 hrs and normalized Regards, Delhi SLDC 20240903190730 2024/09/03 19:07:55 1) Name of the substation and Time: 220kV Okhla, 18:22 Hrs 2) Name of element tripped/restored: 160MVA Tx-I alongwith 66kV I/C-I and 66kV Okhla Ckt-I 3) Relay Annunciation: At 160 MVA Tx-I:- SPR and 86, 66kV I/c-I:- Intertripiing 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240902145321 2024/09/02 14:54:06 1) Name of the substation and Time: 220 kv PPK-2 @14.23 2) Name of element tripped/restored: 160 MVA TR-4 3) Relay Annunciation: SUDDEN PRESSURE RELAY,DIFF TRIP,86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240902131714 2024/09/02 13:17:14 1) Name of the substation and Time: 220 kv Lodhi road @ 12.58 2) Name of element tripped/restored: 100 mva tr-1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240902131642 2024/09/02 13:17:12 1) Name of the substation and Time: 220 kv Lodhi road @ 12.58 2) Name of element tripped/restored: 100 mva tr-1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240902052946 2024/09/02 05:29:47 1) Name of the substation and Time: Lodhi Road, 04:39 Hrs. 2) Name of element tripped/restored: 100MVA Transformer-I No load was affected. Load taken by other Transformer. 3) Relay Annunciation: RYB Differential, 86B 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240831192303 2024/08/31 19:23:09 1) Name of the substation and Time: 400kV Bawana S/stn tripped at 16:40 Hrs 2) Name of element tripped/restored: 400kV Maharani Bagh-Bawana Ckt-I restored at 19:15 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240831183539 2024/08/31 18:36:04 1) Name of the substation and Time: 400 kV Mundka :16:40 Hrs 2) Name of element tripped/restored: 400 kV mundka-Bawana ckt-I charged at 18:06 Hrs , 400 kV mundka-Bawana ckt-II charged at 18:26 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 400 kV mundka-Bawana ckt-I charged at 18:06 Hrs , 400 kV mundka-Bawana ckt-II charged at 18:26 Hrs Regards, Delhi SLDC 20240831172537 2024/08/31 17:25:43 1) Name of the substation and Time: At Mehrauli(17:11)hrs. 2) Name of element tripped/restored: 220KV DIAL ckt-1. 3) Relay Annunciation: D/P, A-N, E/F stg-1, 12.07KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON. 6) Any other relevant information: - Regards, Delhi SLDC 20240831172510 2024/08/31 17:25:36 1) Name of the substation and Time: At Mehrauli(17:11)hrs. 2) Name of element tripped/restored: 220KV DIAL ckt-1. 3) Relay Annunciation: D/P, A-N, E/F stg-1, 12.07KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON. 6) Any other relevant information: - Regards, Delhi SLDC 20240831172225 2024/08/31 17:22:26 1) Name of the substation and Time: At Bawana(16:40)hrs 2) Name of element tripped/restored: 400KV Maharani bagh ckt-I. 3) Relay Annunciation: A and B phase, Z-1, 4.719KM at Bawana end. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other ckts. 6) Any other relevant information: Both end tripping. Regards, Delhi SLDC 20240831172041 2024/08/31 17:20:41 1) Name of the substation and Time: At Mundka(16:40)hrs 2) Name of element tripped/restored: 400KV Bawana ckt-I and II. 3) Relay Annunciation: Bawana-I tripped on R and B phase, D/P,LO. Bawana-II tripped on R and Y phase, D/P, Z-1. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other ckts. 6) Any other relevant information: CVT from Bawana available at Mundka end. Regards, Delhi SLDC 20240831171056 2024/08/31 17:11:06 1) Name of the substation and Time: At Tughlakabad(16:15)hrs 2) Name of element tripped/restored: 220KV Mehrauli ckt-II. 3) Relay Annunciation: R phase trip, 10.3KM, 9.26KA. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240831125353 2024/08/31 12:54:19 1) Name of the substation and Time: At Tughlakabad(12:02)hrs 2) Name of element tripped/restored: 220KV Mehrauli ckt-II. 3) Relay Annunciation: Gen Trip, R phase, 10.3KM, 9.26KA fault current. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other ckt. 6) Any other relevant information: none. Regards, Delhi SLDC 20240831125133 2024/08/31 12:51:42 1) Name of the substation and Time: At Mehrauli(11:43)hrs 2) Name of element tripped/restored: 220KV DIAL ckt-I. 3) Relay Annunciation: D/P, A-N,12.07KM, E/F stg-1. 4) Details of physically damaged equipment: None. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at DIAL end. 6) Any other relevant information: none. Regards, Delhi SLDC 20240830165405 2024/08/30 16:54:57 1) Name of the substation and Time: 220kV DIAL S/stn 2) Name of element tripped/restored: 220kV Bamnauli-Dial Ckt-II at 16:23 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: LILO pt. Rajokari, Tower no-86 the O/H portion of 220kV Bamnauli-DIAL ckt –2 is connected to U/G cables of 220kV DIAL Mehrauli ckt – 2. 220kV Bamnauli-Dial Ckt-II is charged at 16:23 Hrs. Further, 220kV DIAL-Mehrauli ckt -2 is isolated at LILO pt. Rajokari, Tower no-86 and ckt is charged 16:48 Hrs from Mehrauli S/stn. Regards, Delhi SLDC 20240830163535 2024/08/30 16:35:50 1) Name of the substation and Time: 220kV Najafgarh S/stn at 15:56 Hrs 2) Name of element tripped/restored: 220kV Bamnauli -Najafgarh Ckt-II 3) Relay Annunciation: Differential Trip R,Y, B phase, 86 T group, 86A,B,C, Fault current-Ia-240 Amp, Ib-243 Amp, Ic-283Amp, In-29.2 Amp at Bamnauli S/stn End Active Group 1,Fault duration 37 millisecond, Ia-76.89 Amp, Ib-58.70 Amp, Ic-194.6 Amp at Najafgarh S/stn 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240829090647 2024/08/29 09:06:57 1) Name of the substation and Time: At Parkstreet(03:21)hrs 2) Name of element tripped/restored: 100MVA-I(220/66)KV Transformer. 3) Relay Annunciation: Tripped on 30A, Bucholz. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other Transformer. 6) Any other relevant information: none. Regards, Delhi SLDC 20240828073957 2024/08/28 07:40:04 1) Name of the substation and Time: 220KV Mehrauli, 07:24Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240828040643 2024/08/28 04:06:49 1) Name of the substation and Time: 220KV Mehrauli, 02:59Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-I tripped 3) Relay Annunciation: Differential Trip, B-Phase, Zone-1, 195C and F/C, B-Phase - 8.023KA at Mehrauli end and General Trip, Zone-2, B-Phase, RYB Phase Initiate, Line Differential Trip, F/L - 10.90Km and F/C, B-Phase - 12.365KA at Tughlakabad end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuits are alredy parallel 6) Any other relevant information: Tughlakabad operation staff did not inform the System Operation,Minto Road about this tripping. Regards, Delhi SLDC 20240825170948 2024/08/25 17:09:50 1) Name of the substation and Time: 220KV DSIDC Bawana, 15:57Hrs. 2) Name of element tripped/restored: 220KV Narela-I tripped 3) Relay Annunciation: No indication found at DSIDC Bawana end and no tripping found at Narela end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240825170436 2024/08/25 17:05:04 1) Name of the substation and Time: CCGT Bawana, 15:56Hrs. 2) Name of element tripped/restored: Bay No. 410, GT4 and Bay No. 411, TIE Bay tripped 3) Relay Annunciation: Overhand Differential Trip on Bay No. 410, GT4 and no indication on Bay No. 411, TIE Bay 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240825170113 2024/08/25 17:01:21 1) Name of the substation and Time: 400KV Bawana, 15:56Hrs. 2) Name of element tripped/restored: 220KV Shalimaar Bagh-II tripped 3) Relay Annunciation: Y-Phase, Distance Trip, 96T and F/L - 26.6m at Bawana end and no tripping found at Shalimaar Bagh end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Bawana-II put off and 220KV Bus-Coupler charged and supply restored at 15:57Hrs. at Shalimaar Bagh end. 6) Any other relevant information: 220KV Rohini-I Ckt-I and II charged and 220KV Bus-Coupler put off at 16:08Hrs. at Shalimaar Bagh end. Regards, Delhi SLDC 20240825090912 2024/08/25 09:09:44 1) Name of the substation and Time: BTPS 2) Name of element tripped/restored: At 01:22 Hrs. 220kV Tuglakabad Ckt-II tripped. No load was affected. Grid staff reported that Y-Phase LA got damaged 3) Relay Annunciation: Relay at BTPS End- Z-1 Y-phase If=20.3kA. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240822130458 2024/08/22 13:05:36 1) Name of the substation and Time: 220 kV Vasent kunj; 11:18Hrs 2) Name of element tripped/restored: 220 kV Mahrauli ckt-II Charged at 12:45 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: V220 kV Mahrauli ckt-II Charged at 12:45 Hrs Regards, Delhi SLDC 20240822113210 2024/08/22 11:32:53 1) Name of the substation and Time: 220 kV Vasent Kunj: 11:18 Hrs 2) Name of element tripped/restored: 220 kV Mehrauli ckt-II 3) Relay Annunciation: B ph Trip, Differ. Trip Auto reclose,186AB 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: no load effected Regards, Delhi SLDC 20240822084301 2024/08/22 08:43:06 1) Name of the substation and Time: Rajghat 2) Name of element tripped/restored: At 07:53Hrs 100MVA T/F-2 tripped. Load affected was 28MW. At 07:59Hrs 33KV B/C closed and load normalised. 3) Relay Annunciation: Relay on 100MVA T/F-2 are 186. Relay on 33KV I/C-2 are LV REF O/C E/F. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240822083558 2024/08/22 08:35:58 1) Name of the substation and Time: Rajghat 2) Name of element tripped/restored: At 03:20Hrs 33KV I/C-I and II and 33KV B/C tripped on O/C E/F. Load affected was 68MW. At 04:05Hrs 33KV I/C-I and II charged and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240822082952 2024/08/22 08:30:26 1) Name of the substation and Time: PPK-1 2) Name of element tripped/restored: At 01:13Hrs 100MVA T/F-1 tripped on differential YB-phase. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240821183252 2024/08/21 18:33:27 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 18:26Hrs 220KV IP ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240821175850 2024/08/21 17:59:28 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 17:35Hrs 220KV PPGJ-IP ckt-I tripped. No load was affected. 3) Relay Annunciation: Relay at PPGJ end are 86 RY-phase Differential Z-1 1.26km Ir=7.4KA Iy=7.1KA. Relay at IP end are 186 RY-phase differential Z-1 0.138km. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240821152947 2024/08/21 15:30:32 1) Name of the substation and Time: 220 kV Sarita Vihar:-12:27 Hrs 2) Name of element tripped/restored: 220 kV SVR-BTPS ckt-I charged at 15:26 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 kV SVR-BTPS ckt-I charged at 15:26 Hrs Regards, Delhi SLDC 20240821124150 2024/08/21 12:42:16 1) Name of the substation and Time: 220kV SVR, 12:27 Hrs 2) Name of element tripped/restored: 220kV BTPS_I 3) Relay Annunciation: At SVR end:-3-Ph trip, 186A and B, Zone-I, Distance-12.4KM, Ia-446.2A, Ib-716.6A, Ic-3.086KA, In-4.216KA At BTPS end:- Gen Trip, Zone-I, B- Ph trip, Distance-1.86KM, F/Loop- L3N-18.02 KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240821105749 2024/08/21 10:58:18 1) Name of the substation and Time: 220 kV Sarita Vihar:-10:43 Hrs 2) Name of element tripped/restored: 220 kV Pragiti ckt 3) Relay Annunciation: distance Zone-1,Ia-164amp,Ib-7.4Amp,Ic-18.93KA,In-18.93KA Sarita Vihar end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: no load effected Regards, Delhi SLDC 20240820232535 2024/08/20 23:25:38 1) Name of the substation and Time: 220KV GC 2) Name of element tripped/restored: 220KV PPG-2 Charged at 21:04Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240820204940 2024/08/20 20:49:47 1) Name of the substation and Time: At 220KV GC 2) Name of element tripped/restored: 220kv PPG-1 charged at 20:20Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240820195646 2024/08/20 19:56:50 1) Name of the substation and Time: At 220KV Geeta colony @ 18:45Hrs 2) Name of element tripped/restored: Both PPG Ckt 1 and 2 Trip 3) Relay Annunciation: Geeta colony end: PPG-1 = z-2, 86, 3.8KM, 406ms PPG-2 = 86, Trip Start ph BAC, z-1,z-3,3.657KM PPG end: GC-1 = y-Ph, Dist,Diff,Z-1,86,186. GC-2 = r-ph,y-ph,Diff, dist,z-1,86,186 4) Details of physically damaged equipment: No physically damage reported by operator 5) Immediate corrective/system normalization steps performed: Load normalized through 220KV Gazipur at 18:53Hrs 6) Any other relevant information: As per clearance of PPG incharge we try to charge both the circuit but both are not hold. Regards, Delhi SLDC 20240820100312 2024/08/20 10:03:14 1) Name of the substation and Time: 220KV Najafgarh, 09:42Hrs. 2) Name of element tripped/restored: 66KV I/C-I and 66KV DJB-I and II tripped 3) Relay Annunciation: Any Trip, O/C Stage1 and O/C R-Phase 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Transformers and their Incomers are already parallel 6) Any other relevant information: Nil Regards, Delhi SLDC 20240820082106 2024/08/20 08:21:07 1) Name of the substation and Time: 220KV Gopal Pur, 07:19Hrs. 2) Name of element tripped/restored: 220KV Sabji Mandi-I tripped 3) Relay Annunciation: B-Phase, Zone-1, 86 and F/L, B-Phase - 1.672Km at Gopal Pur end and no tripping found at Sabji Mandi end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to DISCOM for shifting the load. 220KV Bus-Coupler charged at 07:26Hrs. at Gopal Pur. 33KV Bus-Coupler charged at 07:29Hrs. at Sabji Mandi and supply restored. 220KV Bus-Section charged and 33KV Bus-Coupler put off at 07:45Hrs. at Sabji Mandi. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240820044654 2024/08/20 04:47:23 1) Name of the substation and Time: 220KV R. K. Puram, 02:49Hrs. 2) Name of element tripped/restored: 220KV Ridge Valley-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240820005037 2024/08/20 00:50:46 1) Name of the substation and Time: 220KV R. K. Puram, 00:25Hrs. 2) Name of element tripped/restored: 220KV Ridge Valley-II tripped 3) Relay Annunciation: R-Phase, Zone-1, 861 and 862 at R. K. Puram end and no tripping found at Ridge Valley end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuits are already parallel 6) Any other relevant information: Nil Regards, Delhi SLDC 20240819170208 2024/08/19 17:02:43 1) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: At 16:02Hrs 220KV Mehrauli ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240819151134 2024/08/19 15:11:39 1) Name of the substation and Time: Pragati 2) Name of element tripped/restored: At 15:05Hrs 220KV Pragati-Sarita Vihar-Maharani Bagh ckt charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240819145358 2024/08/19 14:54:04 1) Name of the substation and Time: BTPS 2) Name of element tripped/restored: At 14:02Hrs 220KV Alwar ckt tripped on Z-1 R-phase If=23.6KA. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240819145223 2024/08/19 14:52:30 1) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: At 14:11Hrs 220KV Tughlakabad-Mehrauli ckt-I tripped. No load was affected. 3) Relay Annunciation: Relay at Tughlakabad end are B-phase Z-2 8.5km If=8.6KA Line Differential. Relay at Mehrauli end are Z-1 RYB-phase differential 7.4km. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240819144915 2024/08/19 14:49:21 1) Name of the substation and Time: Pragati 2) Name of element tripped/restored: At 13:43Hrs 220KV Pragati-Sarita Vihar-Maharani Bagh tripped. No load was affected. 3) Relay Annunciation: Relay at Pragati end are Z-1 C-phase 1.64km Ic=11.96KA. Relay at Maharani Bagh end are C-phase 3.5km If=20KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240818202906 2024/08/18 20:29:09 1) Name of the substation and Time: 220 kV Gaziput:-18:42 Hrs 2) Name of element tripped/restored: 220 kV GZR-Maharanibagh ckt-II charged at 20:25 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: -- 6) Any other relevant information: - Regards, Delhi SLDC 20240818190446 2024/08/18 19:04:56 1) Name of the substation and Time: 220KV Gazipur, 18:42Hrs. 2) Name of element tripped/restored: 220KV Maharani Bagh-II tripped 3) Relay Annunciation: R-Phase, 86ABC, F/L - 10.15Km and F/C, R-Phase - 7.415KA at Gazipur end and General Trip, R-Phase, Zone-1, F/L - 5.9Km and F/C, R-Phase - 12.77KA at Maharani Bagh 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuits are already parallel 6) Any other relevant information: nil Regards, Delhi SLDC 20240818113617 2024/08/18 11:36:23 1) Name of the substation and Time: 220KV PPK-I, 11:28hrs. 2) Name of element tripped/restored: 220KV Dwarka-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240818064450 2024/08/18 06:45:18 1) Name of the substation and Time: At 220KV PPK-1 @ 04:56Hrs. 2) Name of element tripped/restored: 220KV Dwarka Ckt-1 (both end trip) and 220KV Dwarka Ckt-2 along with 220kv B/c, 100MVA-1,100MVA-2, 160MVA-3 and 160MVA-5 3) Relay Annunciation: From 220KV PPK-1 end. 1. 220KV Dwarka Ckt-1 and 220KV Dwarka Ckt-2 - Trip w/o Indication and Relay. 2. 100MVA-1 - Protection Gr-1, 86A, 86B. 3. 100MVA-2- 86A,86B. 4. 160MVA-3- Trip W/o Relay and indication. 5. 160MVA-5 - Trip W/o Relay and indication. 6. 220KV B/c -86,96. From 220KV Dwarka end 01. 220KV PPK Ckt-1 = Z-2,Z-3, Dist(F-21), AN21D, R-ph faulty, 2.30KM, 11.472KA 4) Details of physically damaged equipment: As per operator at 220KV PPK-1 end 220kv Bus coupler R-Phase conductor Broken with heavy sound and hanging at yard. 5) Immediate corrective/system normalization steps performed: After checking of yard and isolation of 220KV B/C from both Buses. Load taken from 220KV Bamnauli Ckt-1 and 2 at 05:32Hrs. Note: 1. 220KV Dwarka -2 not hold. however, CVT available. 2. 160MVA-5 and 160MVA-3 charged at 05:32Hrs. and 05:50Hrs respectively 6) Any other relevant information: Approx. 120MW Load affected. 100MVA-1 and 2 not charged because of relay not reset after try by operator. Regards, Delhi SLDC 20240817133940 2024/08/17 13:39:41 1) Name of the substation and Time: 400 kv munduka @13.10 2) Name of element tripped/restored: 400 kv jhatikara ckt-1 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: NRLDC CLOSING CODE 2548 Regards, Delhi SLDC 20240817133812 2024/08/17 13:38:33 1) Name of the substation and Time: 400 KV MUNDUKA @12.31 2) Name of element tripped/restored: 400 KV JHATIKARA CKT-1 3) Relay Annunciation: Z1,86,B PH,4.36 KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: CVT Available 6) Any other relevant information: AT JHATIKARA END AR optd Regards, Delhi SLDC 20240817133517 2024/08/17 13:35:23 1) Name of the substation and Time: 220 KV MEHRAULI @12.33 2) Name of element tripped/restored: 220 KV TUGLAKABAD CKT-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240817133445 2024/08/17 13:35:14 1) Name of the substation and Time: 220 KV MEHRAULI @12.33 2) Name of element tripped/restored: 220 KV TUGLAKABAD CKT-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240817113535 2024/08/17 11:35:47 1) Name of the substation and Time: 220 kv Mehrauli @11.20 2) Name of element tripped/restored: 220 kv Tuglakabad ckt-2 3) Relay Annunciation: Line diff trip ,86,RYB ph trip 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240817094246 2024/08/17 09:42:59 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 08:57Hrs 220KV PPT ckt-III charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240817081354 2024/08/17 08:14:01 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 07:44Hrs 220KV Panipat ckt-III tripped on distance relay R-phase. CVT coming at Narela end. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240817081206 2024/08/17 08:12:13 1) Name of the substation and Time: IP 2) Name of element tripped/restored: At 23:00Hrs 220KV IP-PPGJ ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240816215008 2024/08/16 21:50:17 1) Name of the substation and Time: IP 2) Name of element tripped/restored: At 20:50Hrs 220KV IP-PPGJ ckt-II tripped on both ends. 220KV IP-Pragati ckt-II tripped at Pragati end CVT was coming at Pragati end. No load was affected. At 21:22Hrs 220KV IP-Pragati ckt-II charged. 3) Relay Annunciation: Relay at IP end on 220KV PPGJ ckt-II are RYB-phase Z-2. Relay at PPGJ end on 220KV IP ckt-II are Z-2 B-phase AR lockout 4.32km. Relay at Pragati end on 220KV IP ckt-II are Z-2 3.37km Ic=1.38KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240815164332 2024/08/15 16:43:33 1) Name of the substation and Time: at Wazirabad(15:54)hrs 2) Name of element tripped/restored: 220KV Mandola ckt-III. 3) Relay Annunciation: R and Y phase trip, 3.20KM, A/R lockout, Active group 1. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other ckts. 6) Any other relevant information: none. Regards, Delhi SLDC 20240815131703 2024/08/15 13:17:05 1) Name of the substation and Time: At SOW(12:16)hrs 2) Name of element tripped/restored: 220KV Mandola ckt-!. 3) Relay Annunciation: Y and B phase trip, 4.93KM, Z-1 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: 220KV Patparganj-Gazipur ckt put ON. 6) Any other relevant information: none. Regards, Delhi SLDC 20240815130820 2024/08/15 13:08:48 1) Name of the substation and Time: At BTPS(10:40)hrs. 2) Name of element tripped/restored: 220KV Ballabhgarh ckt-II. 3) Relay Annunciation: R phase fault, Z-1, D/P, 2.82KM, 16.89KA. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: Load taken by other ckts. 6) Any other relevant information: none. Regards, Delhi SLDC 20240815125739 2024/08/15 12:58:08 1) Name of the substation and Time: At Bawana(11:19)hrs 2) Name of element tripped/restored: 400KV Maharani bagh ckt-1. 3) Relay Annunciation: A and B phase, Z-1, 186 A and B. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other ckts. 6) Any other relevant information: none. Regards, Delhi SLDC 20240815125222 2024/08/15 12:52:49 1) Name of the substation and Time: At SOW(11:06)hrs 2) Name of element tripped/restored: 220KV Mandola ckt-I. 3) Relay Annunciation: R and Y phase trip, 303.5m. 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240815121448 2024/08/15 12:15:20 1) Name of the substation and Time: At SOW(11:09)hrs 2) Name of element tripped/restored: 220KV Mandola ckt-III. 3) Relay Annunciation: Y and B phase trip, Z-1, A/R lockout. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by pther ckts. 6) Any other relevant information: none. Regards, Delhi SLDC 20240815093411 2024/08/15 09:34:39 1) Name of the substation and Time: 220 kvSOW @09.13 hrs 2) Name of element tripped/restored: 220 KV MANDOLA CKT-1 3) Relay Annunciation: DIFF TRIP,DIST TRIP,Z1,86,303.5 Meter 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240814214956 2024/08/14 21:50:02 1) Name of the substation and Time: 220KV Naraina, 21:36Hrs. 2) Name of element tripped/restored: 220KV Dwarka-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240814194139 2024/08/14 19:41:45 1) Name of the substation and Time: 220KV Naraina, 19:15Hrs. 2) Name of element tripped/restored: 220KV Dwarka-I tripped 3) Relay Annunciation: R-Phase, Y-Phase, Zone-1, 86, F/L - 4.40Km, F/C, R-Phase - 2.444KA and Y-Phase - 2.744KA at Naraina end and R-Phase, Y-Phase, Zone-1, F/L - 3.4Km, F/C, R-Phase - 14.502KA and Y-Phase - 14.191KA at Dwarka end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuits are already parallel 6) Any other relevant information: Nil Regards, Delhi SLDC 20240814194109 2024/08/14 19:41:37 1) Name of the substation and Time: 220KV Naraina, 19:15Hrs. 2) Name of element tripped/restored: 220KV Dwarka-I tripped 3) Relay Annunciation: R-Phase, Y-Phase, Zone-1, 86, F/L - 4.40Km, F/C, R-Phase - 2.444KA and Y-Phase - 2.744KA at Naraina end and R-Phase, Y-Phase, Zone-1, F/L - 3.4Km, F/C, R-Phase - 14.502KA and Y-Phase - 14.191KA at Dwarka end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuits are already parallel 6) Any other relevant information: Nil Regards, Delhi SLDC 20240814165926 2024/08/14 16:59:59 1) Name of the substation and Time: 220kV Pragati s/stn at 16:28 Hrs 2) Name of element tripped/restored: 220kV Pragati -IP ckt-II restored at 16:52 Hrs 3) Relay Annunciation: Distance protection, Trip relay BC, Distance-5.19 Mtrs 220 CVT available at Pragati End 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240814144333 2024/08/14 14:43:45 1) Name of the substation and Time: 220 kV Mahrauli :- 2) Name of element tripped/restored: 220 kV Mahrauli Tunglakabad ckt -II charged at 14:30 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240814141346 2024/08/14 14:13:52 1) Name of the substation and Time: 220kV Mehrauli S/stn at 11:47 Hrs 2) Name of element tripped/restored: 220kV Mehrauli-Tuglakabad Ckt-I restored at 14:08 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240814141306 2024/08/14 14:13:42 1) Name of the substation and Time: 220kV Mehrauli S/stn at 11:47 Hrs 2) Name of element tripped/restored: 220kV Mehrauli-Tuglakabad Ckt-I restored at 14:08 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240814133951 2024/08/14 13:40:03 1) Name of the substation and Time: 220kV Vasant Kunj at 12:35 Hrs 2) Name of element tripped/restored: 66kV Incomer no-III put off manually by Oprns. staff due to (Birdage) heavy spark observed on I/C no-III 66kV Bus-II. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load affected Approx.15.5 MW Regards, Delhi SLDC 20240814123624 2024/08/14 12:36:25 1) Name of the substation and Time: 220kV Mehrauli S/stn at 12:02 Hrs 2) Name of element tripped/restored: 220kV Mehrauli-Tuglakabad Ckt-II 3) Relay Annunciation: Line differential, R phase Trip, at MHL end Line differential, R phase Trip, 86 A and B, Fault Location-19.9kM, Fault current-3.38 kAmp at TKD end 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: Load taken 12:15 Hrs via Vasant Kunj Ckt-II . Further Vasant Kunj Ckt-I was charged and then tripped while taking load on said ckt. Asked discom to transfer the load at their end 6) Any other relevant information: Load affected-238 MW approx. Regards, Delhi SLDC 20240814122626 2024/08/14 12:26:47 1) Name of the substation and Time: 220kV Mehrauli S/stn at 11:47 Hrs 2) Name of element tripped/restored: 220kV Mehrauli-Tuglakabad Ckt-I 3) Relay Annunciation: Dist prot, Zone-I, B-C Phase Trip, Dist-6.59 kM, Ib-4.84 kAmp, Ic-5.4kAmp at MHL s/stn General Trip Zone-I and II, B and C Phase Trip, Dist-6.3 kM, Ib-14.47 kAmp, Ic-13.96 kAmp at TKD s/stn 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240814122417 2024/08/14 12:25:07 1) Name of the substation and Time: 220kV Mehrauli S/stn at 11:47 Hrs 2) Name of element tripped/restored: 220kV Mehrauli-Tuglakabad Ckt-I 3) Relay Annunciation: Dist prot, Zone-I, B-C Phase Trip, Dist-6.59 kM, Ib-4.84 kAmp, Ic-5.4kAmp at MHL s/stn General Trip Zone-I and II, B and C Phase Trip, Dist-6.3 kM, Ib-14.47 kAmp, Ic-13.96 kAmp at TKD s/stn 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240813113403 2024/08/13 11:34:50 1) Name of the substation and Time: 220kV Gopalpur S/stn tripped on 17:02 Hrs dt.12.08.24 2) Name of element tripped/restored: 220kV Gopalpur-Subzi Mandi Ckt-II restored at 11:20 Hrs dt.13.08.24 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240812185744 2024/08/12 18:58:08 1) Name of the substation and Time: At Gopalpur(17:02)hrs. 2) Name of element tripped/restored: 220KV Subzi mandi ckt-II. 3) Relay Annunciation: A and B phase, Z-1, 5.927KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Bus section put ON at subzimandi. 6) Any other relevant information: none. Regards, Delhi SLDC 20240812164559 2024/08/12 16:46:05 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 15:46Hrs 66KV I/C-II tripped on E/F stage-I and 66KV B/C tripped on E/F B-phase O/C. Load affected was 29MW. At 16:07Hrs 66KV I/C-II tried but did not hold. At 16:10Hrs 66KV I/C-I tripped on E/F Stage-I. Load affected was 40MW. Grid Staff reported Main Bus-II tension disc of Bus section side got damaged. At 16:25Hrs 66KV I/C-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240811194726 2024/08/11 19:47:32 1) Name of the substation and Time: 220 kv [email protected] 2) Name of element tripped/restored: 100 MVA TR-1 ALONG WITH 66 KV I/C 3) Relay Annunciation: RYB PH TRIP,DIFF TRIP,86,96 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240811181238 2024/08/11 18:12:49 1) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 17:55Hrs 220KV Tughlakabad ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240811171018 2024/08/11 17:10:24 1) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 09:55Hrs 220KV Tughlakabad ckt-II tripped without indication. CVT coming at Okhla end. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240811170834 2024/08/11 17:08:50 1) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: At 15:16Hrs 220KV Mehrauli ckt-I and II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240811140603 2024/08/11 14:06:25 1) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: At 13:17Hrs 220KV Mehrauli ckt-I and II tripped. Load affected was 206MW (Mehrauli and Dial). At 13:21Hrs Load normalised through 220KV Mehrauli-Vasant Kunj ckt I and II 3) Relay Annunciation: Relay at TGBD end on 220KV Mehrauli ckt-I are R-phase differential 21.1km Ir=7.7KA. Relay at TGBD end on 220KV Mehrauli ckit-II are Z-1 RYB-phase differential R-phase 7.0km Ir=12KA. Relay at Mehrauli end on 220KV TGBD ckt-II are Z-1 R-phase differential 11.59km. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240809161053 2024/08/09 16:11:10 1) Name of the substation and Time: 220KV Kanjhawala, 15:48Hrs. 2) Name of element tripped/restored: 66KV I/C-I and II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240809160729 2024/08/09 16:07:49 1) Name of the substation and Time: 220KV Kanjhawala, 15:25Hrs. 2) Name of element tripped/restored: 66KV I/C-I, 66KV I/C-II and 160MVA-III along with 66KV I/C-III tripped 3) Relay Annunciation: No indication on 66KV I/C-I and II, RYB Differential and 86 on 160MVA-III and 86 on 66KV I/C-III 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to DISCOM for shifting the load. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240809160639 2024/08/09 16:07:27 1) Name of the substation and Time: 220KV Kanjhawala, 15:25Hrs. 2) Name of element tripped/restored: 66KV I/C-I, 66KV I/C-II and 160MVA-III along with 66KV I/C-III tripped 3) Relay Annunciation: No indication on 66KV I/C-I and II, RYB Differential and 86 on 160MVA-III and 86 on 66KV I/C-III 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to DISCOM for shifting the load. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240808183735 2024/08/08 18:37:46 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 18:33Hrs 220KV Tughlakabad ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240808002917 2024/08/08 00:29:42 1) Name of the substation and Time: 220kV Mehrauli s/stn at 23:46 Hrs 2) Name of element tripped/restored: 220kV Tuglakabad-Mehrauli Ckt-II 3) Relay Annunciation: General Trip, R phase, zone-2 trip, 3 phase initiate, line differential, Fault current R phase 10 kAmp, Dist-13 KM at 220kV Tuglakabad End R,Y, B Phase zone-1 . R phase differential, Distance-3.4KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240806132036 2024/08/06 13:21:16 1) Name of the substation and Time: 220kV Gazipur S/stn 2) Name of element tripped/restored: 220kV Maharani Bagh Ckt-I charged at 13:19Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240806125914 2024/08/06 13:00:03 1) Name of the substation and Time: 220kV Gazipur S/stn at 12:27 Hrs 2) Name of element tripped/restored: 220kV Maharani Bagh Ckt-I 3) Relay Annunciation: Zone-I , R and Y phase 86 master relay Fault location-2.37kM, Ia-5.719kAmp, Ib-5.956 kAmp at Gazipur S/stn end General Trip, R and Y phase, zone -1, 86 master relay Dist-5.5kM Fault current L1-11.51kAmp, L2-11.28 kAmp IL3 0.16kAmp at Maharani Bagh end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240806124621 2024/08/06 12:46:43 1) Name of the substation and Time: 220kV Patparganj S/stn tripped at 09:20 Hrs 2) Name of element tripped/restored: 66kV Incomer no-II restored at 12:40 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240806093621 2024/08/06 09:37:00 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 09:20Hrs 66KV I/C-II tripped on O/C B-phase. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240806014645 2024/08/06 01:47:21 1) Name of the substation and Time: 220kV PPGJ @ 01:40 Hrs 2) Name of element tripped/restored: 66kV Incomer-II which was tripped @ 00:56Hrs has been restored @ 01:40Hrs. 3) Relay Annunciation: O/C B-Ph, O/C -ST-1. 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: ----- 6) Any other relevant information: No Load Affected. 66kV B/C was ON at the time of tripping. Regards, Delhi SLDC 20240804195434 2024/08/04 19:54:36 1) Name of the substation and Time: At 220KV Okhla Substation @ 19:23 Hrs 2) Name of element tripped/restored: 220KV Okhla TO BTPS Ckt-No-1 3) Relay Annunciation: At Okhla end- Line Diff, Y and B-Ph, RYB, Int Z-1, P-1 R-Ph, P-5 B-Ph, SOFT, In fasia=Line diff operated, Dist Operated, Group A and B trip relay operated. At BTPS end- Gen Trip, Z-1, Y and B-Ph 4) Details of physically damaged equipment: not reported from either from Okhala and BTPS end 5) Immediate corrective/system normalization steps performed: No load affected load shifted in other circuit. 6) Any other relevant information: Told to concerned substation operator to do necessary action agnist trip Regards, Delhi SLDC 20240804165301 2024/08/04 16:53:03 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: At 13:49Hrs 220KV Mandaula ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240804115713 2024/08/04 11:57:18 1) Name of the substation and Time: 220 kV SOW 2) Name of element tripped/restored: 220 kV Mandola-1 3) Relay Annunciation: Distance,Diff.Zone-1. A-B phase 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240804115641 2024/08/04 11:57:11 1) Name of the substation and Time: 220 kV SOW 2) Name of element tripped/restored: 220 kV Mandola-1 3) Relay Annunciation: Distance,Diff.Zone-1. A-B phase 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240803123016 2024/08/03 12:30:44 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 11:29Hrs 66KV I/C-II and 66KV I/C- IV tripped on O/C R and Y-phase. Load affected was 100MW. At 11:50Hrs 66KV I/C-II charged. At 11:53Hrs 66KV I/C-IV charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240803053714 2024/08/03 05:37:42 1) Name of the substation and Time: 220 KV Narania 20:00 Hrs 2) Name of element tripped/restored: 33 KV I/C-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 33 KV I/C-I charged at 00:25 Hrs 6) Any other relevant information: - Regards, Delhi SLDC 20240802211621 2024/08/02 21:16:56 1) Name of the substation and Time: 220kV Nariana S/stn at 20:30 Hrs 2) Name of element tripped/restored: 33kV Incomer no-I 3) Relay Annunciation: Any Trip, R phase, overcurrent, Earth fault, 86 master relay 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Informed to Discom for shifting load at their end. 6) Any other relevant information: Load affected-48MW Regards, Delhi SLDC 20240802154907 2024/08/02 15:49:15 1) Name of the substation and Time: 220 kv gopalpur @15.20 2) Name of element tripped/restored: 220 kv mandola ckt-2 3) Relay Annunciation: restored 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240802125859 2024/08/02 12:59:12 1) Name of the substation and Time: 220 kV gopal pur @12.21 2) Name of element tripped/restored: 220 kv mandola ckt-2 3) Relay Annunciation: supply fail 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: supply resotred through 220 kv sow ct-1 charged @12.39 6) Any other relevant information: na Regards, Delhi SLDC 20240801222445 2024/08/01 22:24:52 1) Name of the substation and Time: At Vasant Kunj(21:12)hrs 2) Name of element tripped/restored: 66KV I/C-III put ON at 21:12hrs and 66KV I/C-I and II put ON at 21:17hrs. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240801205736 2024/08/01 20:57:38 1) Name of the substation and Time: At Vasant Kunj(19:35)hrs. 2) Name of element tripped/restored: 66KV I/C-I, II and III. 3) Relay Annunciation: All three incomers tripped on Y phase trip. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: BSES asked to C/O load. 6) Any other relevant information: none. Regards, Delhi SLDC 20240801162534 2024/08/01 16:26:02 1) Name of the substation and Time: 220 kv timarpur @16.08 2) Name of element tripped/restored: 100 MVA tr-3 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240801154710 2024/08/01 15:47:11 1) Name of the substation and Time: 220 kv timar pur @15.13 2) Name of element tripped/restored: 100 mva tr-3 3) Relay Annunciation: 86 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240801031238 2024/08/01 03:12:41 1) Name of the substation and Time: 220kV Okhla @ 02:37Hrs 2) Name of element tripped/restored: 33kV Incomer-3,4,5 which were tripped@02:05Hrs with Pole blast of 33kV Okhla Ph.II ckt -2 have been restored. 3) Relay Annunciation: I/C-III - O/C, Y-Ph. I/C-IV- O/C Y-Ph, E/F, St-1 I/c-V - O/C, RYB Ph Fault. 4) Details of physically damaged equipment: Y phase pole 33kV CB of 33kV Okhla Ph.II Ckt-2 Blasted. 5) Immediate corrective/system normalization steps performed: 33 Feeder Okhla Ph-2 Ckt 1 and 2 and 33kV N.P.-2 isolated (Relay persist) and all other elements normalized. 6) Any other relevant information: Approx Load on I/C-3,4,5- 24MW+24MW+29MW (Total = 77MW) Regards, Delhi SLDC 20240731162635 2024/07/31 16:27:04 1) Name of the substation and Time: At Patparganj(14:48)hrs 2) Name of element tripped/restored: 16MVA Transformer. 3) Relay Annunciation: R phase, differential protection. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 11KV bus section put ON. 6) Any other relevant information: none. Regards, Delhi SLDC 20240730222143 2024/07/30 22:22:11 1) Name of the substation and Time: 220kV Masjid Moth Stn at 22:00 Hrs 2) Name of element tripped/restored: 100MVA, 220/33kV Pr Trf no-III with 33kV I/c no-III 3) Relay Annunciation: Differential RYB, 86 1 and 2 on 220kV Side relay. 86 on 33kV side relay 4) Details of physically damaged equipment: 33kV B phase CT Damaged/Blast. 5) Immediate corrective/system normalization steps performed: Informed BRPL to shift the load at their end 6) Any other relevant information: Approx. 75 MW Load affected Regards, Delhi SLDC 20240730172022 2024/07/30 17:20:24 1) Name of the substation and Time: 220kV Najafgarh S/stn 2) Name of element tripped/restored: 220kV Bamnauli-Najafgarh Ckt -I restored at 15:05 Hrs 220kV Bamnauli-Najafgarh Ckt -II restored at 16:18 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240730152333 2024/07/30 15:23:36 1) Name of the substation and Time: At Bamanauli S/stn @14:54Hrs 2) Name of element tripped/restored: 220KV Najafgarh Ckt-II 3) Relay Annunciation: Y and B-Phase, Diff trip and 27.64KM, 86T,86ABC,186 A and B 4) Details of physically damaged equipment: Still not reported by operator 5) Immediate corrective/system normalization steps performed: At 220 KV Najafgarh S/stn end BML ckt-1 Trip at 14:55 Hrs on O/C and same was restored after few minutes 6) Any other relevant information: Load affected approx. 200 MW Regards, Delhi SLDC 20240729170011 2024/07/29 17:00:14 1) Name of the substation and Time: 220 kV Park Street, 13:58 Hrs. 2) Name of element tripped/restored: 100 MVA Tx-II with 33kV I/C-II restored at 16:25 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 100 MVA Tx-II with 33kV I/C-II restored at 16:25 Hrs Regards, Delhi SLDC 20240729154234 2024/07/29 15:42:38 1) Name of the substation and Time: 220kV SMB, 14:40 hrs 2) Name of element tripped/restored: 100 MVA Tx. I,II and III 3) Relay Annunciation: 86 relay operated and 220kV supply failed at SMB end of 220kV Bawana -II 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 14:50-54 Hrs 220kV RHN I and II put ON and At 15:03 Hrs 100 MVA Tx-I,II and III charged and system normalized. 6) Any other relevant information: Approx. 188 MW load affected. Note:-220kV Bawana-SMB Ckt-II put off manualy due to heavy flash over R-Ph isolator at 400 kV Bawana end. Regards, Delhi SLDC 20240729143021 2024/07/29 14:30:28 1) Name of the substation and Time: 220 kV Park Street, 13:58 Hrs. 2) Name of element tripped/restored: 100 MVA Tx-II with 33kV I/C-II 3) Relay Annunciation: Diff. Operated , 86 A, 86B, Diff. R,Y and B-Phase, High set diff., LV REF 4) Details of physically damaged equipment: R-Ph cable end box damaged 5) Immediate corrective/system normalization steps performed: No load affected. informed to BYPL and NDMC for load reducing. 6) Any other relevant information: - Regards, Delhi SLDC 20240729135703 2024/07/29 13:57:12 1) Name of the substation and Time: 220kV MLI, 21:53 Dt. 28.07.2024 2) Name of element tripped/restored: 100 MVA-I with 66kV I/C-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 13:00 Hrs charged of 100 MVA-I with 66kV I/C-I Regards, Delhi SLDC 20240729073314 2024/07/29 07:33:43 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: At 06:48Hrs 33KV I/C-I tripped on any trip O/C R-phase E/F 86. Load affected was 52MW. At 07:21Hrs 33KV I/C-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240728234441 2024/07/28 23:45:09 1) Name of the substation and Time: Bawana 2) Name of element tripped/restored: At 23:34Hrs 400KV Maharani Bagh ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240728233647 2024/07/28 23:37:16 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 21:53Hrs 100MVA T/F-1 tripped on LV REF 195A. 66KV I/C-III tripped without indication. Load affected was 124MW. At 21:57Hrs 66KV B/C closed. At 22:05Hrs 66KV I/C-II tripped on any trip O/C stage-I B-phase O/C. 66KV I/C-IV tripped without indication. Load affected was 126MW. At 22:14Hrs 66KV I/C-II and 66KV I/C-III charged. At 22:25Hrs 66KV I/C-IV charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240728212124 2024/07/28 21:21:26 1) Name of the substation and Time: IP 2) Name of element tripped/restored: At 21:15Hrs 100MVA T/F-1 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240728191855 2024/07/28 19:19:02 1) Name of the substation and Time: Bawana 2) Name of element tripped/restored: At 18:24Hrs 400KV Maharani Bagh ckt-I tripped on Z-2 39.58km Ia=555.8A Ib=8.6KA Ic=8.7KA In=865.5A. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240728181740 2024/07/28 18:18:10 1) Name of the substation and Time: 220kV IP @ 17:39 Hrs 2) Name of element tripped/restored: 100MVA Tx-I tripped with snapping of LA jumper. 3) Relay Annunciation: Differential RYB Ph., Differential Hi Sat.86 Mater. 4) Details of physically damaged equipment: LA Jumper snapped. 5) Immediate corrective/system normalization steps performed: Requested IP Substation for earliest restoration. Asked Discoms to shift the Load. 6) Any other relevant information: ---------- Regards, Delhi SLDC 20240728091410 2024/07/28 09:14:37 1) Name of the substation and Time: At Geeta colony(09:09)hrs 2) Name of element tripped/restored: 220KV Wazirabad ckt-1 3) Relay Annunciation: D/P, B and C phase. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240728081443 2024/07/28 08:14:43 1) Name of the substation and Time: At SOW substation and 07:42Hrs 2) Name of element tripped/restored: 220KV Geeta Colony Ckt-II 3) Relay Annunciation: Relays SOW end = B-Ph, Z-1, Distance Trip, 86, Auto reclosed Operated, Auto reclose Lockout, 4.086KM, 50ms. Geeta colony end= Trip Ph-C, O/c start, IA> 1 and 3, Earth Fault start in, Dist Z-1, 2.903KM, 27RYB,86,86ABC, Auto reclosed Operated, Auto reclose Lockout 4) Details of physically damaged equipment: Not reported by operator so no physical damage 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240727175215 2024/07/27 17:52:45 1) Name of the substation and Time: IP 2) Name of element tripped/restored: At 17:48Hrs 100MVA T/F-1 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240727163355 2024/07/27 16:34:08 1) Name of the substation and Time: IP 2) Name of element tripped/restored: At 16:07Hrs 100MVA T/F-1 tripped on 86. Load affected was 63MW. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240727051240 2024/07/27 05:12:44 1) Name of the substation and Time: 220KV Vasant Kunj, 00:57Hrs. 2) Name of element tripped/restored: 66KV I/C-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240726201421 2024/07/26 20:14:23 1) Name of the substation and Time: 220KV Vasant Kunj, 19:40Hrs. 2) Name of element tripped/restored: 66KV I/C-II tripped 3) Relay Annunciation: 86 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Transformers and their Incomers are already parallel. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240726174007 2024/07/26 17:40:13 1) Name of the substation and Time: 220kV Timarpur@17:34 Hrs 2) Name of element tripped/restored: 100MVA, 220/33kV Tx No.1 (Newly commissioned) energized. 3) Relay Annunciation: ----------------- 4) Details of physically damaged equipment: -------------- 5) Immediate corrective/system normalization steps performed: ---------------- 6) Any other relevant information: New Element. Regards, Delhi SLDC 20240726173916 2024/07/26 17:39:24 1) Name of the substation and Time: 220kV Timarpur@17:34 Hrs 2) Name of element tripped/restored: 100MVA, 220/33kV Tx No.1 (Newly commissioned) energized. 3) Relay Annunciation: ----------------- 4) Details of physically damaged equipment: -------------- 5) Immediate corrective/system normalization steps performed: ---------------- 6) Any other relevant information: New Element. Regards, Delhi SLDC 20240726135440 2024/07/26 13:54:49 1) Name of the substation and Time: Bamnauli 2) Name of element tripped/restored: At 13:36Hrs 500MVA ICT-2 tripped on REF 86. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240726105343 2024/07/26 10:54:25 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 10:02Hrs 100MVA T/F-2 tripped on 86 and 160MVA T/F-4 tripped without indication. Load affected was 151MW. At 10:30Hrs 160MVA T/F-4 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240724132524 2024/07/24 13:26:06 1) Name of the substation and Time: 220KV Park Street, 13:05Hrs. 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240724132439 2024/07/24 13:25:22 1) Name of the substation and Time: 220KV Park Street, 13:05Hrs. 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240724112729 2024/07/24 11:28:11 1) Name of the substation and Time: 220KV Park Street, 11:02Hrs. 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I tripped 3) Relay Annunciation: Any Trip, O/C ST1, O/C Y-Phase, O/C B-Phase, E/F, 86, 86A and 86B on 100MVA-I and Any Trip, O/C ST1, O/C Y-Phase, O/C B-Phase, E/F ST1 and 86 on 33KV I/C-I 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 33KV Bus-Coupler charged at 11:03Hrs. and supply restored 6) Any other relevant information: Nil Regards, Delhi SLDC 20240724112641 2024/07/24 11:27:25 1) Name of the substation and Time: 220KV Park Street, 11:02Hrs. 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I tripped 3) Relay Annunciation: Any Trip, O/C ST1, O/C Y-Phase, O/C B-Phase, E/F, 86, 86A and 86B on 100MVA-I and Any Trip, O/C ST1, O/C Y-Phase, O/C B-Phase, E/F ST1 and 86 on 33KV I/C-I 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 33KV Bus-Coupler charged at 11:03Hrs. and supply restored 6) Any other relevant information: Nil Regards, Delhi SLDC 20240723171621 2024/07/23 17:17:03 1) Name of the substation and Time: At Pappankalan-III(16:09)hrs 2) Name of element tripped/restored: 160MVA-II 3) Relay Annunciation: 86, Bucholz. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: BRPL asked to C/O load. 6) Any other relevant information: none. Regards, Delhi SLDC 20240722084847 2024/07/22 08:49:30 1) Name of the substation and Time: 220 KV Gopalpur @ 08.32 2) Name of element tripped/restored: 220 kv subzimandi ckt-2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240721212415 2024/07/21 21:24:59 1) Name of the substation and Time: 220 kv gopal pur @20.50 2) Name of element tripped/restored: 220 kv subzimandi -2 3) Relay Annunciation: Z1,86,1.3KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240721191538 2024/07/21 19:16:21 1) Name of the substation and Time: 220 KV GOOTA COLONY @18.53 2) Name of element tripped/restored: 220 KV PPG CKT-1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240721174202 2024/07/21 17:42:44 1) Name of the substation and Time: 220kV Geeta Colony S/stn at 17:28 Hrs 2) Name of element tripped/restored: 220kV Patparganj Ckt-I 3) Relay Annunciation: Zone-I, O/C , E/F start in, Fault current Ia-10.40kAmp, Ib-9.74kAmp Fault location-2.671 at Geeta Colony S/stn Zone-1, Diff Trip, R phase and Y phase Trip, Dist-1.76kM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240721174118 2024/07/21 17:42:00 1) Name of the substation and Time: 220kV Geeta Colony S/stn at 17:28 Hrs 2) Name of element tripped/restored: 220kV Patparganj Ckt-I 3) Relay Annunciation: Zone-I, O/C , E/F start in, Fault current Ia-10.40kAmp, Ib-9.74kAmp Fault location-2.671 at Geeta Colony S/stn Zone-1, Diff Trip, R phase and Y phase Trip, Dist-1.76kM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240720165921 2024/07/20 17:00:04 1) Name of the substation and Time: 220 kV K. gate:-at14:58 Hrs 2) Name of element tripped/restored: 33 kV I/C-I charge at 16:48 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 33 kV I/C-I charge at 16:48 Hrs Regards, Delhi SLDC 20240720154552 2024/07/20 15:46:34 1) Name of the substation and Time: 220kV K. Gate, 14:58Hrs. 2) Name of element tripped/restored: 33kV I/C-I alongwith 33kV jama Masjid 3) Relay Annunciation: At 33kV I/C-I- B-Phase,E/F, 86 4) Details of physically damaged equipment: Smoking noted in GIS room 5) Immediate corrective/system normalization steps performed: 33kV B/C put on at 15:15 Hrs and system normalized 6) Any other relevant information: Approx. load 44 MW affected Regards, Delhi SLDC 20240720154507 2024/07/20 15:45:49 1) Name of the substation and Time: 220kV K. Gate, 14:58Hrs. 2) Name of element tripped/restored: 33kV I/C-I alongwith 33kV jama Masjid 3) Relay Annunciation: At 33kV I/C-I- B-Phase,E/F, 86 4) Details of physically damaged equipment: Smoking noted in GIS room 5) Immediate corrective/system normalization steps performed: 33kV B/C put on at 15:15 Hrs and system normalized 6) Any other relevant information: Approx. load 44 MW affected Regards, Delhi SLDC 20240720132943 2024/07/20 13:30:26 1) Name of the substation and Time: 220 kV Naraina:-at 10:48 Hrs 2) Name of element tripped/restored: 220 kV Dawarka-ckt-I charged at 13:24 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 kV Dawarka-ckt-I charged at 13:24 Hrs Regards, Delhi SLDC 20240720112521 2024/07/20 11:26:04 1) Name of the substation and Time: 220kV Mehrauli S/stn at 10:45 Hrs 2) Name of element tripped/restored: 66kV I/C no- I , II and III. restored at 11:02 Hrs 3) Relay Annunciation: Any Trip O/C stage-I, B phase on 66kV I/C no-I Any Trip O/C stage-I, B phase on 66kV I/C no-II Without Indication on 66kV I/C no-I 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: System normalized at 11:02 Hrs through charging of 66kV I/C no-I , II and III 6) Any other relevant information: Total Load affected 227 MW Approx Regards, Delhi SLDC 20240720111956 2024/07/20 11:20:38 1) Name of the substation and Time: 220kV Naraina S/stn at 10:48 Hrs 2) Name of element tripped/restored: 220kV Dwaraka-Naraina Ckt-I 3) Relay Annunciation: Distance Prot, Zone-I , B and C faulty, Dist-2.20 kM, Tb-14.872 kAmp, Ic-14.554 kAmp at Dwaraka End. Zone-I, Y and B phase , Auto reclose Dist-5.6 kM at Nariana End 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240719174054 2024/07/19 17:41:37 1) Name of the substation and Time: 220 kV Ohkla. 2) Name of element tripped/restored: 33 kV I/C-III,IV,V charged at 17:30hrs 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Restoration 6) Any other relevant information: nil Regards, Delhi SLDC 20240719174008 2024/07/19 17:40:51 1) Name of the substation and Time: 220 kV Ohkla. 2) Name of element tripped/restored: 33 kV I/C-III,IV,V charged at 17:30hrs 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Restoration 6) Any other relevant information: nil Regards, Delhi SLDC 20240719170903 2024/07/19 17:09:46 1) Name of the substation and Time: 220kV Okhla @16:44Hrs 2) Name of element tripped/restored: 33kV Incomer-III, IV and V tripped due to birdage. 3) Relay Annunciation: O/C, B- Ph. and *6 on all three relays. 4) Details of physically damaged equipment: ------------ 5) Immediate corrective/system normalization steps performed: Instructed both Grid and Discom to normal the load ASAP 6) Any other relevant information: Approx load was 116MW. Regards, Delhi SLDC 20240718183815 2024/07/18 18:38:59 1) Name of the substation and Time: 220 KV TIMAR PUR @17.56 2) Name of element tripped/restored: 100 MVA TR-3 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: Trf has been charged with tertiary CB open Regards, Delhi SLDC 20240718183010 2024/07/18 18:30:53 1) Name of the substation and Time: 220 KLV TIMARPUR @17.26 2) Name of element tripped/restored: 100 MVA TR-3 ALONG WITH I/C 3) Relay Annunciation: 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: TRANSFORMER HAS TRIPPED WHILE CLOSING TERITIOARY CB Regards, Delhi SLDC 20240718182806 2024/07/18 18:28:48 1) Name of the substation and Time: 220 kV Timarpur 17.22 2) Name of element tripped/restored: 100 MVA TR-3 ALONG WITH I/C 3) Relay Annunciation: 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: TRANSFORMER HAS TRIPPED WHILE CLOSING TERITIOARY CB Regards, Delhi SLDC 20240717185614 2024/07/17 18:56:58 1) Name of the substation and Time: 220 kV Naraniya:-18:25 Hrs 2) Name of element tripped/restored: 220 Dwarka ckt-II 3) Relay Annunciation: Disttzone-I,F/L-2.4 KM,Ia-0.3KA, Ib-15.84KA,Ic-15.5KA at Dwarka end Zone-I,Y and B ph,CS,86A,86B 295DC, Distt 1.8 KM at Narania end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No Load Effected Regards, Delhi SLDC 20240716091334 2024/07/16 09:14:17 1) Name of the substation and Time: 220kV Ridgevalley @06:21 Hrs 2) Name of element tripped/restored: 160MVA Tx II and 220kV RK Puram -II Tripped (Busbar operated) 3) Relay Annunciation: R-Ph. Trip, B/B Operated, Gen Trip, REF Trip, Differential RYB Ph. 4) Details of physically damaged equipment: Diaphragm of CB chamber of 160MVA-IIrupture and SF6 Gas leaked.Spark seen in Tertiary chamber of 160MVA Tx-II 5) Immediate corrective/system normalization steps performed: Informed to Discom for Load shifting and taking load on 160MVA Tx-I thrugh 66kV B/C (BSES ) 6) Any other relevant information: Approx load was 55MW. Regards, Delhi SLDC 20240716073157 2024/07/16 07:32:39 1) Name of the substation and Time: Ridge Valley 2) Name of element tripped/restored: At 06:21Hrs 160MVA T/F-2 tripped on 86 differential gas pressure lock. Load affected was 50MW. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240714172245 2024/07/14 17:23:27 1) Name of the substation and Time: At RK Puram(16:29)hrs 2) Name of element tripped/restored: 100MVA-1(I220/33)KV Transformer. 3) Relay Annunciation: OSR. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240714134434 2024/07/14 13:45:17 1) Name of the substation and Time: At RK Puram(10:36)hrs 2) Name of element tripped/restored: 100MVA-I(220/330)KV Transformer. 3) Relay Annunciation: Oil suge relay. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: load taken by other transformer. 6) Any other relevant information: none. Regards, Delhi SLDC 20240713130815 2024/07/13 13:08:58 1) Name of the substation and Time: 220kV Tunglakabad:-11:30Hrs 2) Name of element tripped/restored: 220 kV Maharoli-TUB ckt-II charged at 12:51 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 kV Maharoli-TUB ckt-II charged at 12:51 Hrs Regards, Delhi SLDC 20240713121749 2024/07/13 12:18:31 1) Name of the substation and Time: 220kV Tuglakabad S/stn at 11:30 Hrs 2) Name of element tripped/restored: 220kV Mehrauli Ckt-II. 3) Relay Annunciation: General Trip, line differential, R phase Trip, zone-2 , Fault location-9.90 kM , Fault current 11.906 kAmp at TKD End. Distance Protection start phase A-N, Trip Phase AN Fault location 6.25 kM at MLI End. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240712142556 2024/07/12 14:26:38 1) Name of the substation and Time: 220kV Patparganj S/stn at 14:08 Hrs 2) Name of element tripped/restored: 100MVA, 220/33kV Pr Trf no-II alonwith 33kV I/C no-II 3) Relay Annunciation: HV REF, 52 EF HV, Differential, Buchloz trip, SPR Trip, 30 AB, 30 GK. LV REF 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240712080614 2024/07/12 08:06:56 1) Name of the substation and Time: At 220KV Okhala 2) Name of element tripped/restored: All three I/cS are charged at 07:48Hrs. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load AFFECTED for 20Mins span Regards, Delhi SLDC 20240712080322 2024/07/12 08:04:04 1) Name of the substation and Time: At 220KV Okhala @ 07:28Hrs 2) Name of element tripped/restored: I/C-3,4 and 5 3) Relay Annunciation: In I/c-3 Y-Ph Trip and I/c-4 and 5 R and Y-pH TRIP 4) Details of physically damaged equipment: Monkey electrocuted 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load affected-55MW Regards, Delhi SLDC 20240711202750 2024/07/11 20:28:32 1) Name of the substation and Time: At Patparganj(20:01)hrs 2) Name of element tripped/restored: 220KV Geeta colony ckt-II. 3) Relay Annunciation: Y and b phase trip. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240711190449 2024/07/11 19:05:32 1) Name of the substation and Time: At Patparganj(17:50)hrs 2) Name of element tripped/restored: 220KV Geeta Colony ckt-II. 3) Relay Annunciation: D/P, Y and B phase trip, A/R Lockout. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: 220Kv Gazipur put ON at Patparganj station. 6) Any other relevant information: none. Regards, Delhi SLDC 20240711143115 2024/07/11 14:31:57 1) Name of the substation and Time: Wazirabad 2) Name of element tripped/restored: At 13:53Hrs 220KV Mandaula ckt-I tripped on R-phase O/C. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240710160457 2024/07/10 16:05:39 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 14:23Hrs 220KV Mehrauli-TGBD ckt-II charged. At 15:52Hrs 220KV Mehrauli-TGBD ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240710130003 2024/07/10 13:00:45 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 11:32Hrs 220KV Mehrauli-TGBD ckt-I tripped. At 11:59Hrs 220KV Mehrauli-TGBD ckt-II tripped. Load affected was approx 280MW from 11:59Hrs-12:00Hrs. 3) Relay Annunciation: Relay on 220KV Mehrauli-TGBD ckt-I are Line Differential B-phase 23.4km at Mehraluli end and B-phase 25km If=2.59KA at TGBD end. Relay on 220KV Mehrauli-TGBD ckt-II are Line Differential R-phase 10.3km If=1.5KA at Mehrauli end and R-phase 9.0km If=13.4KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240710072631 2024/07/10 07:27:13 1) Name of the substation and Time: 220kv Subzi Mandi at 07:10 Hrs 2) Name of element tripped/restored: 33kV Incomer no-I. 3) Relay Annunciation: 86 master relay, CB open 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 33kV Incomer no-I restored at 07:17 Hrs 6) Any other relevant information: Load affected 33MW Approx Regards, Delhi SLDC 20240709214708 2024/07/09 21:47:50 1) Name of the substation and Time: 220kV PPK-II at 21:20 Hrs 2) Name of element tripped/restored: 160 MVA Power Trf no-III alongwith 66kV Incomer no-III 3) Relay Annunciation: Diff- R,Y,B phase, HS operated, 86 on 160 MVA Pr Trf no-III and REF, 64 R on 66kV I/C no-III. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No Load affected . Regards, Delhi SLDC 20240709195855 2024/07/09 19:59:37 1) Name of the substation and Time: 400kV Mundka, 12:05 Hrs 2) Name of element tripped/restored: 160 MVATx-III 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 19:57 Hrs 160 MVATx-III charged 6) Any other relevant information: - Regards, Delhi SLDC 20240709195812 2024/07/09 19:58:54 1) Name of the substation and Time: 400kV Mundka, 12:05 Hrs 2) Name of element tripped/restored: 160 MVATx-III 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 19:57 Hrs 160 MVATx-III charged 6) Any other relevant information: - Regards, Delhi SLDC 20240709193352 2024/07/09 19:34:34 1) Name of the substation and Time: 220kV Dwarka S/stn 2) Name of element tripped/restored: 220kV PPK-I -Dwarka Ckt-II at 18:06 Hrs Charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Under Breakdown since 04.06.2024 at 18:17 Hrs Regards, Delhi SLDC 20240709130927 2024/07/09 13:10:09 1) Name of the substation and Time: 400 kv munduka @ 12.05 2) Name of element tripped/restored: 160 mva tr-3 3) Relay Annunciation: 86 AB,Buchloz alarm 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240708002050 2024/07/08 00:21:32 1) Name of the substation and Time: 220kV Okhla @ 23:37Hrs 2) Name of element tripped/restored: 100MVA 220/33kV Tx No. IV 3) Relay Annunciation: Hi Sat Differential LV REF, No Load was Affected. 4) Details of physically damaged equipment: ------- 5) Immediate corrective/system normalization steps performed: ------- 6) Any other relevant information: ------- Regards, Delhi SLDC 20240705195245 2024/07/05 19:53:27 1) Name of the substation and Time: 220KV IP, 19:10Hrs. 2) Name of element tripped/restored: 33KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Operation Staff of 220KV Substation, IP charged 33KV I/C-I on telephonic clerance of AM(T) Maintenance, IP and without any instruction of Delhi SLDC, System Operation, Minto Road. Regards, Delhi SLDC 20240705194310 2024/07/05 19:43:52 1) Name of the substation and Time: 220KV IP, 18:52Hrs. 2) Name of element tripped/restored: 33KV I/C-I, 100MVA-II, 33KV I/C-II and 33KV TIE Bay (Bay No. 22) tripped 3) Relay Annunciation: O/C and R-Phase on 33KV I/C-I, Bucchholz Relay, 86 and Lockout on 100MVA-II, no indication on 33KV I/C-II and O/C Stage 1 and O/C R-Phase on 33KV TIE Bay (Bay No. 22) 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to DISCOMs for shifting the load. 6) Any other relevant information: Operation Staff of 220KV Substation, IP informed to Delhi SLDC, System Operation, Minto Road about this tripping at 19:16Hrs. Regards, Delhi SLDC 20240705194216 2024/07/05 19:42:59 1) Name of the substation and Time: 220KV IP, 18:52Hrs. 2) Name of element tripped/restored: 33KV I/C-I, 100MVA-II, 33KV I/C-II and 33KV TIE Bay (Bay No. 22) tripped 3) Relay Annunciation: O/C and R-Phase on 33KV I/C-I, Bucchholz Relay, 86 and Lockout on 100MVA-II, no indication on 33KV I/C-II and O/C Stage 1 and O/C R-Phase on 33KV TIE Bay (Bay No. 22) 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to DISCOMs for shifting the load. 6) Any other relevant information: Operation Staff of 220KV Substation, IP informed to Delhi SLDC, System Operation, Minto Road about this tripping at 19:16Hrs. Regards, Delhi SLDC 20240704153235 2024/07/04 15:33:17 1) Name of the substation and Time: 220Kv Vasant Kunj at 14:22 Hrs 2) Name of element tripped/restored: 220kV RK Puram Ckt-II at both end 220kV R.K Puram Ckt-I tripped but CVT apperar at Vasant Kunj End 100MVA PR Trf I and II and 160 MVA Pr Trf no-III( Suppy Failed) 3) Relay Annunciation: 220kV Bus Bar Operated. 220kV RKP-VSK Ckt-II tripped on Distance protection zone-3, R Phase 186 at R K puram End and carrier fail at Vasant Kunj End. 220kV RKP-VSK-I tripped at Vasant Kunj End.However CVT apperar at Vasant Kunj End 4) Details of physically damaged equipment: R phase dropper jumper of 220kV Bus-II damaged, 04 nos Insulator Disc punctured. 5) Immediate corrective/system normalization steps performed: System normalised at 15:00 Hrs through 220kv R K Puram Ckt _I alongwith 100MVA PR Trf I and II and 160 MVA Pr Trf no-III 6) Any other relevant information: Load affected approx. 90 MW. Regards, Delhi SLDC 20240703073314 2024/07/03 07:33:41 1) Name of the substation and Time: 220 kv gopalpur @ 07.17 2) Name of element tripped/restored: 220 kv mandola ckt-2 3) Relay Annunciation: one phase cutrent not showing 4) Details of physically damaged equipment: CVT /CT control cable theft 5) Immediate corrective/system normalization steps performed: mandola ckt-2 put off after intimation to nrldc and load tanken on 220 kv sow ckt-1 to avoid CT damage 6) Any other relevant information: na Regards, Delhi SLDC 20240703065145 2024/07/03 06:51:47 1) Name of the substation and Time: 220KV Gopal Pur, 06:48Hrs. 2) Name of element tripped/restored: 220KV Mandaula-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240703062216 2024/07/03 06:22:23 1) Name of the substation and Time: 220KV Gopal Pur, 05:00Hrs. 2) Name of element tripped/restored: 220KV Mandaula-II tripped 3) Relay Annunciation: RYB Phase, 86A, 86B and 86C 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV SOW-I charged at 05:08Hrs. and supply restored 6) Any other relevant information: Total load effected - 60MW for 07 Minutes Regards, Delhi SLDC 20240701094637 2024/07/01 09:46:50 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) scda telephone and telephone three devices are in faulty mode .kindly attend as soosn as possible 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20240701014006 2024/07/01 01:40:34 1) Name of the substation and Time: At SOW(00:02)hrs 2) Name of element tripped/restored: 160MVA transformer. 3) Relay Annunciation: Differential trip, Y phase. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: BYPL asked to C/O load. 6) Any other relevant information: none. Regards, Delhi SLDC 20240630174039 2024/06/30 17:40:40 1) Name of the substation and Time: 220KV SOW, 17:33Hrs. 2) Name of element tripped/restored: 220KV Mandaula-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240630134459 2024/06/30 13:45:07 1) Name of the substation and Time: 220KV Gopal Pur, 13:36Hrs. 2) Name of element tripped/restored: 220KV Mandola-I and II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240630130820 2024/06/30 13:08:21 1) Name of the substation and Time: 220KV Sabji Mandi, 12:30Hrs. 2) Name of element tripped/restored: 100MVA-II charged at no-load 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240630130742 2024/06/30 13:07:43 1) Name of the substation and Time: 220kv SOW @12:24hrs 2) Name of element tripped/restored: 220kv Mandola-1 3) Relay Annunciation: o/current, R- Phase, Diff. Tripp 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240630122541 2024/06/30 12:25:46 1) Name of the substation and Time: 220KV Sabji Mandi, 12:15Hrs. 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240630122517 2024/06/30 12:25:39 1) Name of the substation and Time: 220KV Sabji Mandi, 12:15Hrs. 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240630120016 2024/06/30 12:00:26 1) Name of the substation and Time: Gopal pur @11:35hrs 2) Name of element tripped/restored: 66kv I/C no.4 charged 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240630115145 2024/06/30 11:51:52 1) Name of the substation and Time: Timarpur @10:15hrs 2) Name of element tripped/restored: 100MVA No.3 3) Relay Annunciation: 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240630114833 2024/06/30 11:48:55 1) Name of the substation and Time: subzi Mandi @10:12hrs 2) Name of element tripped/restored: 100MVA No.1 and 2 3) Relay Annunciation: 100MVA No1 any tripp E/fault,86, HV REF LV REF 100 MVA No2 Diff. Tripp A-phase, LV REFTRIPP,86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240630114228 2024/06/30 11:42:56 1) Name of the substation and Time: Gopal pur@10:22hrs 2) Name of element tripped/restored: 100MVA P.Trs 1,2, and 3 @10:22hrs and 160MVA P.trs Charged 10:48 hrs 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240630113435 2024/06/30 11:34:41 1) Name of the substation and Time: Gopal pur @10:13 2) Name of element tripped/restored: Transformaers 1,2,3 and 4 3) Relay Annunciation: O/current, 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240630112840 2024/06/30 11:28:47 1) Name of the substation and Time: Gopal pur @10:13hrs 2) Name of element tripped/restored: 220kv Mandola ckt 1 and 2 3) Relay Annunciation: without Relay indication 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: @10:16 hrs 220kv SOW charged/Load Taken Regards, Delhi SLDC 20240630111621 2024/06/30 11:16:23 1) Name of the substation and Time: 220kV Gopal pur @10:30hrs 2) Name of element tripped/restored: Transformers 1,2,3 and 4 3) Relay Annunciation: O/C, 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240629173528 2024/06/29 17:35:31 1) Name of the substation and Time: 220KV SOW 2) Name of element tripped/restored: 220KV Mandola-I and Restored@17:21Hrs. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240629143429 2024/06/29 14:34:36 1) Name of the substation and Time: At SOW(13:57)hrs 2) Name of element tripped/restored: 220KV Mandola ckt-I. 3) Relay Annunciation: Z-1, R and Y phase,Differential protection, 9.118KM. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: load taken by other parallel ckts. 6) Any other relevant information: none. Regards, Delhi SLDC 20240629095435 2024/06/29 09:54:40 1) Name of the substation and Time: 220KV Pragati @09:35Hrs 2) Name of element tripped/restored: 220KV Pragati to IP-II 3) Relay Annunciation: 86,o/c,B-Ph, Diff, Z-1 4) Details of physically damaged equipment: No damage reported by operters 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240629095403 2024/06/29 09:54:31 1) Name of the substation and Time: 220KV Pragati @09:35Hrs 2) Name of element tripped/restored: 220KV Pragati to IP-II 3) Relay Annunciation: 86,o/c,B-Ph, Diff, Z-1 4) Details of physically damaged equipment: No damage reported by operters 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240629025124 2024/06/29 02:51:31 1) Name of the substation and Time: 220kV Gopal Pur, 01:24 hrs 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 100 MVA-III alongwith 33kV I/C-III charged at 02:45 hrs 6) Any other relevant information: - Regards, Delhi SLDC 20240629014721 2024/06/29 01:47:26 1) Name of the substation and Time: 220 kV Gopal pur, 01:24 hrs 2) Name of element tripped/restored: 100 MVA-III along with 33kV I/C-III 3) Relay Annunciation: 30G and 86 on 100 MVA Tx-III 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 1:29 33kV B/C cloase and load taken , system normal 6) Any other relevant information: Approx. 40 MW load affected Regards, Delhi SLDC 20240628214903 2024/06/28 21:49:04 1) Name of the substation and Time: 400kV BWN, 21:02 Hrs 2) Name of element tripped/restored: 220kV RHN-II, Ckt-I and CVT appeared at BWN end 3) Relay Annunciation: 186A and 186B, Autoreclosed 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 21:29 Hrs 220kV RHN-II, Ckt-I charged 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240628110255 2024/06/28 11:03:01 1) Name of the substation and Time: 220KV PPG, 10:55Hrs. 2) Name of element tripped/restored: 33KV I/C-I and III restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240628093712 2024/06/28 09:37:41 1) Name of the substation and Time: 220 kv ppg @9.05 hrs 2) Name of element tripped/restored: 33 kv I/c -1 ,33 I/C -3 100 MVA TR-2 3) Relay Annunciation: 33 kv I/c -1: OC,R PH TRIP 33 I/C -3 : OC TRIP, R AND B PH TRIP. 100 MVA TR-2 : EF TRIP ,B PH TRIP 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: INFORMED THE DISCOM FOR SHIFTING LOAD Regards, Delhi SLDC 20240628062108 2024/06/28 06:21:09 1) Name of the substation and Time: 220 kv gopalpur @5.44 hrs 2) Name of element tripped/restored: 100 mva TR-3 3) Relay Annunciation: 86,SPR OPTD 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240627150743 2024/06/27 15:07:49 1) Name of the substation and Time: 220 kV Park street:-11:15 Hrs 2) Name of element tripped/restored: 220/66kV 100 MVA Pt-II charged at 14:59 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220/66kV100 MVA Pt-II charged at 14:59 Hrs Regards, Delhi SLDC 20240627130437 2024/06/27 13:04:43 1) Name of the substation and Time: 220kV Park Street, 11:15 Hrs 2) Name of element tripped/restored: 220/66 kV 100 MVA Tx-II 3) Relay Annunciation: 86,86, OLTC OSR 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 11:21 hrs B/c put ON and system normalized 6) Any other relevant information: Load approx. 39 MW affected and 100 MVA tx-II under B/D Regards, Delhi SLDC 20240627130408 2024/06/27 13:04:35 1) Name of the substation and Time: 220kV Park Street, 11:15 Hrs 2) Name of element tripped/restored: 220/66 kV 100 MVA Tx-II 3) Relay Annunciation: 86,86, OLTC OSR 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 11:21 hrs B/c put ON and system normalized 6) Any other relevant information: Load approx. 39 MW affected and 100 MVA tx-II under B/D Regards, Delhi SLDC 20240627125819 2024/06/27 12:58:22 1) Name of the substation and Time: 220 KV Gopal Pur, 09:48 Hrs ( Revised ) 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220 kV SBZ I and II put off at 09:48 Hrs 6) Any other relevant information: Approx 214 MW load affected Regards, Delhi SLDC 20240627124752 2024/06/27 12:47:56 1) Name of the substation and Time: 220kV Gopal Pur, 09:48 Hrs 2) Name of element tripped/restored: Following fedeers tripped due to 220kV bus-bar-I operated. 1) 220kV Mandola-I and II 2) 160/100 MVA-I/II (66kV) 3) 100 MVA-I (33kV) 4) 220kV B/C 5) 220kV SBZ-I and II 3) Relay Annunciation: 220kV bus-bar-I operated. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Charged as following feeders. 1) 220kV Mandola-I at 10:59 Hrs 2) 160-I (66kV) at 10:49 Hrs 3) 100 MVA-I (33kV) at 10:39 hrs 4) 220kV B/C at 10:10 hrs 5) 220kV SBZ-I at 10:40 hrs and SBZ-II at 10:57 hrs 6) 100 MVA-II (66kV) at 10:42 hrs 7) 220kV SOW-I and II put on at 09:52 Hrs and System normalizes at 10:59 hrs Through 220 SOW-I and II 6) Any other relevant information: Approx load affected 214 Hrs. Regards, Delhi SLDC 20240627093614 2024/06/27 09:36:20 1) Name of the substation and Time: BTPS 2) Name of element tripped/restored: At 09:09Hrs 220KV Ballabgarh ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240627085104 2024/06/27 08:51:06 1) Name of the substation and Time: BTPS 2) Name of element tripped/restored: At 08:17Hrs 220KV Ballabgarh ckt-I tripped on Z-1 Y-phase 10.92km If=9.8KA. CVT is coming at BTPS end. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240626160736 2024/06/26 16:07:42 1) Name of the substation and Time: 220 kV Okhla:- 15:24Hrs 2) Name of element tripped/restored: 66 kV I/C-II Tripped at 15:24 Hrs 3) Relay Annunciation: With out Indication 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 66 kV I/C-II at 15:34 Hrs Charge 6) Any other relevant information: Approx. load effected 83 MW Regards, Delhi SLDC 20240626160341 2024/06/26 16:03:46 1) Name of the substation and Time: 220kV Okhla:-15:24 2) Name of element tripped/restored: 66 kV I/C no-II trip at 15:24 Hrs. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 66 kV I/C no-II Charge at 15:34 Hrs. 6) Any other relevant information: Load effected approx. 83 MW Regards, Delhi SLDC 20240626124254 2024/06/26 12:42:55 1) Name of the substation and Time: 220kV SVR, 11:50 Hrs 2) Name of element tripped/restored: 66kV I/C-I alongwith 66kV Jashola-I, 66kV SVR, 3) Relay Annunciation: 66kV I/C-I on O/C and E/F, 66kV Jashola-I on Zone-I, 66kV SVR-zone-I, 4) Details of physically damaged equipment: B-Phase conductor snapped of 66kV Bus-I of 66kV-I/C-I 5) Immediate corrective/system normalization steps performed: At 12:24 hrs DMRC-I charged on Bus-II 6) Any other relevant information: Approx. load 94 MW affected Regards, Delhi SLDC 20240625135154 2024/06/25 13:52:21 1) Name of the substation and Time: 220kV Okhla 2) Name of element tripped/restored: 100mVA Tx-IV charged @ 13:12 Hrs which got tripped @ 12:28Hrs 3) Relay Annunciation: RYB-Ph Differential, LV REF 4) Details of physically damaged equipment: --------------- 5) Immediate corrective/system normalization steps performed: --------------- 6) Any other relevant information: ---------------- Regards, Delhi SLDC 20240625134846 2024/06/25 13:48:52 1) Name of the substation and Time: 220kV Naraina @ 13:05Hrs 2) Name of element tripped/restored: 33kV Bus-II Charged. 3) Relay Annunciation: ------------- 4) Details of physically damaged equipment: ------------- 5) Immediate corrective/system normalization steps performed: ------------- 6) Any other relevant information: --------------- Regards, Delhi SLDC 20240625134720 2024/06/25 13:47:23 1) Name of the substation and Time: 220kV IP @ 12:26 Hrs 2) Name of element tripped/restored: 100mVA Tx. I charged at No Load. 3) Relay Annunciation: ---------- 4) Details of physically damaged equipment: ------------- 5) Immediate corrective/system normalization steps performed: ------------- 6) Any other relevant information: ------------ Regards, Delhi SLDC 20240625083252 2024/06/25 08:32:57 1) Name of the substation and Time: 220KV Naraina, 08:24Hrs. 2) Name of element tripped/restored: 33KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240625061812 2024/06/25 06:18:13 1) Name of the substation and Time: 220KV Naraina, 05:26Hrs. 2) Name of element tripped/restored: 33KV I/C-I tripped 3) Relay Annunciation: Any Trip, 86, O/C R-Phase, O/C ST1 and E/F 4) Details of physically damaged equipment: R-Phase 33KV Bus-I conductor damaged 5) Immediate corrective/system normalization steps performed: Informed to DISCOM for shifting the load. 4 Nos. of 33KV Feeder and 16MVA-I and II shifted from 33KV Bus-I to 33KV Bus-II. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240625023746 2024/06/25 02:37:52 1) Name of the substation and Time: 220KV IP, 02:30Hrs. 2) Name of element tripped/restored: 33KV I/C-III restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240625023433 2024/06/25 02:34:39 1) Name of the substation and Time: 220KV IP, 01:50Hrs. 2) Name of element tripped/restored: 33KV I/C-III tripped 3) Relay Annunciation: O/C RYB Phase and O/C Stage 1 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to DISCOM for shifting the load. 6) Any other relevant information: Total load effected - 35MW Regards, Delhi SLDC 20240624222143 2024/06/24 22:21:48 1) Name of the substation and Time: 220KV PPK-III, 22:12Hrs. 2) Name of element tripped/restored: 160MVA-II along with 66KV I/C-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240624222114 2024/06/24 22:21:42 1) Name of the substation and Time: 220KV PPK-III, 22:12Hrs. 2) Name of element tripped/restored: 160MVA-II along with 66KV I/C-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240624203929 2024/06/24 20:39:32 1) Name of the substation and Time: 220KV PPK-III, 20:12Hrs. 2) Name of element tripped/restored: 160MVA-II along with 66KV I/C-II tripped 3) Relay Annunciation: Bucchholz and 86 on 160MVA-II and 86 on 66KV I/C-II 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 66KV Bus-Coupler charged at 20:16Hrs. and supply restored. Informed to DISCOM for shifting the load. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240624151340 2024/06/24 15:13:48 1) Name of the substation and Time: Rajghat 2) Name of element tripped/restored: At 13:24Hrs 100MVA T/F-1 tripped on RY-phase differential and 33KV I/C-II tripped on O/C E/F. Grid staff reported R-phase conductor snapped of 33KV I/C-I. Load affected was 136MW. At 13:59Hrs 33KV I/C-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240623213444 2024/06/23 21:34:49 1) Name of the substation and Time: 220kV TKD, 15:35Hrs 2) Name of element tripped/restored: Restored as bellow 1) 220kV BTPS-I and II at 21:16 Hrs 2)220kV Okhla-I at 21:10 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220kV Okhla-II under breakdown Regards, Delhi SLDC 20240623213415 2024/06/23 21:34:43 1) Name of the substation and Time: 220kV TKD, 15:35Hrs 2) Name of element tripped/restored: Restored as bellow 1) 220kV BTPS-I and II at 21:16 Hrs 2)220kV Okhla-I at 21:10 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220kV Okhla-II under breakdown Regards, Delhi SLDC 20240623172704 2024/06/23 17:27:13 1) Name of the substation and Time: 220KV Tughlakabad, 15:35Hrs. 2) Name of element tripped/restored: 220KV BTPS-I, 220KV BTPS-II, 220KV Okhla-I and 220KV Okhla-II 3) Relay Annunciation: 220KV BTPS-I tripped due to General Trip, R-Phase, 3-Phase Initiate, Line Differential Trip, Distance DPFC, F/L - 0.50Km and F/C, R-Phase - 25.687KA at Tughlakabad end and General Trip, RYB Phase, Zone-2 and F/L - 1.45Km at BTPS end. 220KV BTPS-II tripped due to General Trip, R-Phase, Y-Phase, Zone-1, F/L - 0.90Km and F/C, R-Phase - 23.620KA, Y-Phase - 17.610KA at Tughlakabad end and R-Phase, Y-Phase, General Trip, Zone-1 , Zone-2 and F/L - 2.99Km at BTPS end. 220KV Okhla-I tripped due to General Trip, R-Phase, Zone-1, F/L - 0.90Km and F/C, R-Phase - 22.644KA at Tughlakabad end and no tripping found at Okhla end. 220KV Okhla-II tripped due to General Trip, R-Phase, Zone-1, F/L - 0.60Km and F/C, R-Phase - 27.123KA at Tughlakabad end and RYB Phase, Zone-1, 86 and F/L - 3.09Km at Okhla end. 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Load of 220KV Tughlakabad-BTPS Ckt-I and II shifted to 220KV BTPS-Ballabhgarh Ckt-I and II. Load of 220KV Tughlakabad-Okhla Ckt-I and II shifted to 220KV BTPS-Okhla Ckt-I and II. 220KV Bus-Coupler charged at 15:45Hrs. at 220KV Substation, Okhla. Informed to DISCOM for shifting the load. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240623165320 2024/06/23 16:53:26 1) Name of the substation and Time: 220KV Masjid Moth, 16:15Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240623165159 2024/06/23 16:52:03 1) Name of the substation and Time: 220KV Masjid Moth, 15:35Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-I tripped 3) Relay Annunciation: 86 at Masjid Moth end and no tripping found at Tughlakabad end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to DISCOM for shifting the load. 220KV Bus-Coupler charged at 15:37 Hrs. at 220KV Substation, Masjid Moth and supply restored. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240623112141 2024/06/23 11:21:41 1) Name of the substation and Time: 220KV IP, 10:52Hrs. 2) Name of element tripped/restored: 33KV I/C-III and 33KV TIE Bay (Bay No. 22) restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240623112117 2024/06/23 11:21:40 1) Name of the substation and Time: 220KV IP, 10:52Hrs. 2) Name of element tripped/restored: 33KV I/C-III and 33KV TIE Bay (Bay No. 22) restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240623110552 2024/06/23 11:05:59 1) Name of the substation and Time: 220KV IP, 09:59Hrs. 2) Name of element tripped/restored: 100MVA-I, 33KV I/C-I, 33KV I/C-III, 33KV Connaught Place-I (Bay No. 28), 33KV TIE Bay (Bay No. 12), 33KV TIE Bay (Bay No. 22), 33KV TIE Bay (Bay No. 36) and Local Transformer (Bay No. 31) 3) Relay Annunciation: 86, O/C and E/F on 100MVA-I, 86, O/C and E/F on 33KV I/C-I, Any Trip, O/C Y-Phase and O/C Stage 1 on 33KV I/C-III, O/c B-Phase, O/C Stage 1 and E/F Stage 1 on 33KV Connaught Place-I (Bay No. 28), E/F Stage 1 on 33KV TIE Bay (Bay No. 12), O/C R-Phase, O/C Stage 1 and E/F Stage 1 on 33KV TIE Bay (Bay No. 22), R-Phase and E/F on 33KV TIE Bay (Bay No. 36) and Y-Phase LA damaged of Local Transformer (Bay No. 31) 4) Details of physically damaged equipment: Y-Phase LA damaged of Local Transformer (Bay No. 31) 5) Immediate corrective/system normalization steps performed: Informed to DISCOMs for shifting the load. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240622000430 2024/06/22 00:04:59 1) Name of the substation and Time: Sabzi Mandi 2) Name of element tripped/restored: At 23:15Hrs 100MVA T/F-2 tripped. Load affected was 47MW. Discoms have shifted their load. 3) Relay Annunciation: Relay on 100MVA T/F-2 are Differential O/C RYB-phase E/F. Relay on 33KV I/C-2 are Differential O/C RYB-phase. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240621085123 2024/06/21 08:51:24 1) Name of the substation and Time: 220kV Tuglakabad S/stn at 08:22 Hrs 2) Name of element tripped/restored: 220kV Tuglakabad- Mehrauli Ckt-II 3) Relay Annunciation: General trip, R phase Trip, Zone I and II, Line Diff Trip, Carrier R, Y, B initiate, fault location -4.40 kM , fault current R phase-19.296 kAmp at Tuglakabad End. General trip, R phase Trip, fault location -11.7 kM at Mehrauli End. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20240621022418 2024/06/21 02:24:19 1) Name of the substation and Time: 220kV Naraina, 00:53hrs 2) Name of element tripped/restored: 33kV I/C-I, II and III 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 33kV I/C-I at 1:34 Hrs, II and III-1:57 Hrs charged and at 02:20 hrs system normalized through 33kV Bus-I 6) Any other relevant information: 33kV Bus-II under breakdown Regards, Delhi SLDC 20240621015001 2024/06/21 01:50:02 1) Name of the substation and Time: 220kV Naraina, 00:53 2) Name of element tripped/restored: 33kV I/C-I,II and III along with 33kV B/C 3) Relay Annunciation: O/C, B- Ph, 86 on all I/Cs 4) Details of physically damaged equipment: B-Ph cable end terminations damaged of 33kV Bus-II 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Approx. 170 MW load affected Regards, Delhi SLDC 20240620224051 2024/06/20 22:40:53 1) Name of the substation and Time: 220kV Parkstreet S/stn at 12:29 Hrs 2) Name of element tripped/restored: 100 MVA,220/33kV Pr Trf no-II Alongwith 33kV I/C no-II restored at 21:54 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load taken on 33kV I/C no-II at 21:54 Hrs Regards, Delhi SLDC 20240620135431 2024/06/20 13:54:37 1) Name of the substation and Time: At IP(12:42)hrs 2) Name of element tripped/restored: 33KV I/C-I. 3) Relay Annunciation: O/C, b phase. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240620135149 2024/06/20 13:51:55 1) Name of the substation and Time: Aty IP(12:32)hrs 2) Name of element tripped/restored: 33KV I/C-I. 3) Relay Annunciation: O/C, B phase. 4) Details of physically damaged equipment: 33KV east bus-II pipe clamp of JNstadium damaged. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: 33KV JN stadium did not trip. Regards, Delhi SLDC 20240620134704 2024/06/20 13:47:06 1) Name of the substation and Time: At Parkstreet(12:29hrs) 2) Name of element tripped/restored: (220/33KV)100MVA-1, and 33KV I/C-II. 3) Relay Annunciation: 100MVA-I tripped on Bucholz O/C, E/F and differential REF.While 33KVI/C-II tripped on O/C, Y phase. 4) Details of physically damaged equipment: B phase CB pole of 33KV I/C-II damaged. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: none. Regards, Delhi SLDC 20240619223357 2024/06/19 22:34:03 1) Name of the substation and Time: 220KV Sabji Mandi, 21:25Hrs. 2) Name of element tripped/restored: 33KV I/C-I and II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240619223233 2024/06/19 22:32:36 1) Name of the substation and Time: 220KV Sabji Mandi, 21:20Hrs. 2) Name of element tripped/restored: 33KV I/C-I tripped 3) Relay Annunciation: 86 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to DISCOM for shifting the load 6) Any other relevant information: Nil Regards, Delhi SLDC 20240619201617 2024/06/19 20:16:19 1) Name of the substation and Time: 220KV Sabji Mandi, 18:22Hrs. 2) Name of element tripped/restored: 16MVA-I along with 11KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240619195028 2024/06/19 19:50:32 1) Name of the substation and Time: 220KV Sabji Mandi, 18:19Hrs. 2) Name of element tripped/restored: 33KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: NIl 6) Any other relevant information: Nil Regards, Delhi SLDC 20240619194757 2024/06/19 19:48:06 1) Name of the substation and Time: 220KV Sabji Mandi, 17:22Hrs. 2) Name of element tripped/restored: 33KV I/C-I, 33KV I/C-II, 33KV Shahzada Bagh-I, 33KV BG Road-I, 16MVA-I and 11KV I/C-I tripped 3) Relay Annunciation: Differential Trip C and 86 on 33KV I/C-I, Differential Trip and 86 on 33KV I/C-II, Y-Phase, 86 and F/L - 2.1Km on 33KV Shahzada Bagh-I, RYB Phase, 86 and E/F on 33KV BG Road-I, Differential Trip C and 86 on 16MVA-I and no indication on 11KV I/C-I 4) Details of physically damaged equipment: R-Phase cable end box of 33KV I/C-II 5) Immediate corrective/system normalization steps performed: Informed to DISCOM for shifting the load 6) Any other relevant information: Nil Regards, Delhi SLDC 20240617175327 2024/06/17 17:53:29 1) Name of the substation and Time: 400kV H. Vihar @ 17:48 Hrs 2) Name of element tripped/restored: 400kV Dadri Harsh Vihar ckt II charged and load taken. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240615160217 2024/06/15 16:02:28 1) Name of the substation and Time: 220KV Gopal Pur, 15:48Hrs. 2) Name of element tripped/restored: 220KV Bus-Coupler restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240615134218 2024/06/15 13:42:23 1) Name of the substation and Time: 220KV Gopal Pur, 13:18hrs. 2) Name of element tripped/restored: 220KV Bus-Coupler tripped 3) Relay Annunciation: Supervision Relay 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240614122931 2024/06/14 12:29:32 1) Name of the substation and Time: 220kV Rohini-2 @12:25 2) Name of element tripped/restored: 66kV Incommer-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240614115417 2024/06/14 11:54:21 1) Name of the substation and Time: 220KV Rohini-II, 11:01Hrs. 2) Name of element tripped/restored: 66KV I/C-II tripped 3) Relay Annunciation: Directional E/F 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Instruction given to DISCOM for shifting the load. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240614034536 2024/06/14 03:45:42 1) Name of the substation and Time: Bawana 2) Name of element tripped/restored: At 02:35Hrs  400KV Bawana-Abdullapur ckt tripped on  R-phase Z-1 Ib=885A Ic=929A.Grid staff reported R-phase Line isolators jumper got snapped. CVT coming at Bawana end. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240612203243 2024/06/12 20:32:46 1) Name of the substation and Time: 220 kV Wazirabad:- 18:08 2) Name of element tripped/restored: 66 kV I/C no-II restored at 20:26 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 66 kV I/C no-II restored at 20:26 Hrs Regards, Delhi SLDC 20240612185351 2024/06/12 18:53:52 1) Name of the substation and Time: 220kV SOW, 18:08 Hrs 2) Name of element tripped/restored: 66kV I/C-II of 100 MVA Tx-II 3) Relay Annunciation: E/F, 86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load sifted to others Tx and No load affected 6) Any other relevant information: - Regards, Delhi SLDC 20240612154601 2024/06/12 15:46:03 1) Name of the substation and Time: At Peeragarhi(14:25)hrs 2) Name of element tripped/restored: 100MVA-I(220/33KV) 3) Relay Annunciation: Diffrential protection, 86 A.B and c. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: No load affected.however TPDDL asked to C/O load due to increased loading on other transformers. 6) Any other relevant information: Permit issued. Regards, Delhi SLDC 20240611222407 2024/06/11 22:24:10 1) Name of the substation and Time: 220 kv saritavihar [email protected] 2) Name of element tripped/restored: 160 mva tr 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240611213029 2024/06/11 21:30:35 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) sYSTEM OPERATION DESK scda telephone not working to day after noon onwards 2) sYSTEM OPERATION DESK scda telephone not working to day after noon onwards 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20240611190457 2024/06/11 19:04:58 1) Name of the substation and Time: 220kV sarita vihar @18:32 2) Name of element tripped/restored: 160MVA Power Transformer 3) Relay Annunciation: Differtional Tripp.LV REF, RYB phase Tripp. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240611183148 2024/06/11 18:32:09 1) Name of the substation and Time: 220kV SOW at 14:12 Hrs 2) Name of element tripped/restored: 220kV Mandola Ckt I, II, III and IV 3) Relay Annunciation: Supply failed from Mandola End 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: system normalised of respective substation from 15:17 Hrs to 17:30 Hrs 6) Any other relevant information: Afftected Substation 220kV Geeta Colony, Preet Vihar, Kashmiri Gate, Harsh Vihar, IP , Rajghat,Gopalpur, Narela, Subzi Mandi. Load afftected 1322 MW Approx due to supply failed from Mandola End and also 279 MW Approx Generation unit loss as GT1, GT2 and STG. Regards, Delhi SLDC 20240609154924 2024/06/09 15:49:30 1) Name of the substation and Time: Bamnauli 2) Name of element tripped/restored: At 13:00Hrs 220KV PPK-2 ckt-I tripped on B-phase differential 38.4km If=273.6. Ckt was at no load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240608194658 2024/06/08 19:47:06 1) Name of the substation and Time: 220KV Sarita Vihar, 18:06Hrs. 2) Name of element tripped/restored: 220KV Pragati tripped 3) Relay Annunciation: Auto Reclose, Lockout, Distance Protection, Zone-1, B-Phase trip, 186A, 186B, 86A, 86B, 195CC, F/L - 3.487Km and F/C, B-Phase - 17.05KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Fire reported in Zahra Restaurant due to cylinder blast located at Shahin Bagh near 220KV Sarita Vihar - Pragati Ckt. and 220KV Sarita Vihar - Maharani Bagh Ckt. (Both 220KV Lines disconnected at Tower No. 12) 220KV Pragati (Isolated and Earthed) and 220KV Maharani Bagh (Trip, Isolated and Earthed) at 19:01Hrs. for safety purpose on request of DM(T) Maintenance, Sarita Vihar Regards, Delhi SLDC 20240607202600 2024/06/07 20:26:06 1) Name of the substation and Time: 400kV Harsh Vihar at 18:28 Hrs 2) Name of element tripped/restored: 400/220kV 315MVA Power Transformer no-I, backcharged from 220kV side but could not hold and tripped 3) Relay Annunciation: OLTC OSR, Earthfault, Harmonic block relay operated 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: The said transformer is under shutdown and PTW issued 6) Any other relevant information: - Regards, Delhi SLDC 20240607202141 2024/06/07 20:21:48 1) Name of the substation and Time: 400kV Harsh vihar at 18:28 Hrs 2) Name of element tripped/restored: 400/220kV 315MVA Power Transformer no-II, back charged, 400/220kV 315MVA Power Transformer no-III, back charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: The said Transformer back charged from 220kV side. 6) Any other relevant information: - Regards, Delhi SLDC 20240607171127 2024/06/07 17:11:29 1) Name of the substation and Time: 400 KV BAWANA @17.01 2) Name of element tripped/restored: 220 KV DSIDC BAWANA CKT-1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240607155315 2024/06/07 15:53:17 1) Name of the substation and Time: 400 KV BAWANA @15.32 2) Name of element tripped/restored: 220 KV DSIDC BAWANA CKT-1 3) Relay Annunciation: RY PH TRIP,Z1,1.47KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240606062122 2024/06/06 06:21:30 1) Name of the substation and Time: Harsh Vihar 2) Name of element tripped/restored: At 02:48Hrs 400KV Harsh Vihar-Dadri ckt-I charged from Harsh Vihar end through 315MVA ICT-I but ckt could not hold. 3) Relay Annunciation: Relay on 315MVA ICT-I 86 operated, TC-1/2 Faulty,AR Block, R,Y,B Phase trip, Zone-1 trip, REF Trip, O/C R,Y.B phase Pick up,E/F Pick up Sadden PR Trip. Relay on 220KV I/C-I 86 optd, CB Trouble,TC-1 Faulty . Relay on 400KV Dadri ckt-I 3.1 km,time-23ms, IL1-2.76kA, IL2-0.5 kA, IL3-2.85 kA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240606061226 2024/06/06 06:12:26 1) Name of the substation and Time: Shalimar Bagh 2) Name of element tripped/restored: At 06:00Hrs 220KV Shalimar Bagh-SGTN ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240606030143 2024/06/06 03:02:03 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 22:06Hrs 220KV Rohtak Road ckt-I tripped on B-phase 15.8km Ib=3.3KA. No load was affected. At 01:11Hrs 220KV Narela-Rohtak Road ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240606025642 2024/06/06 02:56:42 1) Name of the substation and Time: SGTN 2) Name of element tripped/restored: At 21:09Hrs 220KV SGTN-Shalimar Bagh ckt-II tripped on RB-phase 2.56km B-phase differential If=9.2KA at Shalimar Bagh end. Load affected was 13MW. At 21:16Hrs load normalised through 220KV B/C. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240606024742 2024/06/06 02:47:58 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: At 21:37Hrs Load disappeared on 220KV Mandaula ckt-IV. Grid Staff informed that line isolator of 220KV Mandaula ckt-IV got opened due to heavy thunderstorm. No load was affected. At 01:58Hrs 220KV Mandaula ckt-IV charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240606024206 2024/06/06 02:42:06 1) Name of the substation and Time: Shalimar Bagh 2) Name of element tripped/restored: At 20:30Hrs 220KV Bawana ckt-I tripped on O/C YB-phase. CVT was coming at Shalimar Bagh end. Load affected was 145MW (SGTN and Partial load of Shalimar Bagh). At 20:40Hrs Load normalised through 220KV Rohini-1 ckt-I At 20:55Hrs 220KV Bawana-Shalimar Bagh ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240606023413 2024/06/06 02:34:19 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: At 21:14Hrs 220KV Mandaula ckt-I tripped on B-phase Z-1 19.74km Ib=1.4KA. No load was affected. At 23:09Hrs 220KV Mandaula ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240606023030 2024/06/06 02:30:35 1) Name of the substation and Time: CCGT Bawana 2) Name of element tripped/restored: At 21:21Hrs 400KV Bhiwani ckt tripped on Z-1 B-phase 13.0km. No load was affected. At 21:29Hrs closing code for interconnectors of 400KV Bawana-CCGT Bawana was issued but due to internal fault at CCGT Bawana interconnectors could not be closed. At 22:40Hrs 400KV CCGT Bawana-Bhiwani ckt charged from Bhiwani end but could not hold. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240606022112 2024/06/06 02:21:13 1) Name of the substation and Time: Harsh Vihar 2) Name of element tripped/restored: At 21:13Hrs 400KV Dadri ckt-II tripped on BY-phase Z-1 2.7km E/F and supply failed of 400KV Dadri ckt-I also at the same time 220KV Harsh Vihar-Preet Vihar ckt I and II tripped on BCN-phase Z-1 86 at Preet Vihar end. Load affected was 511MW (Harsh Vihar, Preet Vihar and Patparganj). At 21:24Hrs 220KV Patparganj-Gazipur ckt charged and load of Patparganj normalised. At 22:33Hrs 220KV Preet Vihar-Patparganj ckt I and II charged and load of Preet Vihar normalised. At 22:50Hrs 220KV Preet Vihar-Harsh Vihar ckt-I charged and load of Harsh Vihar normalised. At 22:55Hrs 220KV Preet Vihar-Harsh Vihar ckt-II charged. Grid staff reported R-phase conductor of 400KV Harsh Vihar-Dadri ckt-II got broken near Tower no. 152. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240606020221 2024/06/06 02:02:32 1) Name of the substation and Time: Najafgarh 2) Name of element tripped/restored: At 17:54Hrs 220KV Najafgarh-Kanjhawala ckt tripped at Kanjhawala end without indication. Load affected was 75MW (Najafgarh). At 17:55Hrs load normalised through 220KV Mundka ckt. At 18:03Hrs 220KV Najafgarh-Kanjhawala ckt charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240605230302 2024/06/05 23:03:03 1) Name of the substation and Time: Harsh Vihar 2) Name of element tripped/restored: At 21:15Hrs Due to Heavy Thunderstorm 400KV Harsh Vihar-Dadri ckt-II tripped at Harsh Vihar end and supply failed of 400KV Harsh Vihar-Dadri ckt-I from Dadri end resulting in supply failed of Harsh Vihar, Preet Vihar and Patparganj grids. Patparganj supply was restored from Gazipur immediately also Delhi SLDC immediately arranged charging code from NRLDC for charging of 400KV Harsh Vihar-Dadri ckt I and II consequently but after rigrous persuation with NRLDC Dadri denied charging of both lines from Dadri end, thereafter the supply of Preet Vihar and Harsh Vihar was restored by Geeta Colony via Patparganj. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240605132217 2024/06/05 13:22:24 1) Name of the substation and Time: At Narela(12:09)hrs 2) Name of element tripped/restored: 66KV I/C-I and III. 3) Relay Annunciation: Tripped W/I. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: TPDDL asked to C/O load. 6) Any other relevant information: Incomer is 66KV instead of 33KV ,which was wrongly mentioned in earlier message. Regards, Delhi SLDC 20240605124620 2024/06/05 12:46:40 1) Name of the substation and Time: At Narela(12:00)hrs 2) Name of element tripped/restored: 33Kv I/C-I and III. 3) Relay Annunciation: Tripped W/I. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: TPDDL asked to C/O load. 6) Any other relevant information: none. Regards, Delhi SLDC 20240604184823 2024/06/04 18:48:29 1) Name of the substation and Time: 220kV Dwarka at 18:17 Hrs 2) Name of element tripped/restored: 220kV Dwarka-PPK-I Ckt-II Charged at 17:25 Hrs 220kV Dwarka-PPK-I Ckt-II Tripped at 18:17 Hrs 3) Relay Annunciation: General Pick up, R, Y, B phase BN SOTF operated 21, BN SOTF operated 50 G Fault current on B phase-25707.59 Amp Distance-0.7kM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20240604173641 2024/06/04 17:36:43 1) Name of the substation and Time: 220kV Dawarka at 17:25 Hrs 2) Name of element tripped/restored: 220kV PPK-I-Dawarka Ckt-II charged at 17:25 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: The said above circuit was under breakdown since 05.11.2023 Regards, Delhi SLDC 20240604173624 2024/06/04 17:36:30 1) Name of the substation and Time: 220kV Dawarka at 17:25 Hrs 2) Name of element tripped/restored: 220kV PPK-I-Dawarka Ckt-II charged at 17:25 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: The said above circuit was under breakdown since 05.11.2023 Regards, Delhi SLDC 20240604113242 2024/06/04 11:32:44 1) Name of the substation and Time: At 400kv Bamnauli, 10:34 hrs 2) Name of element tripped/restored: Najafgarh 220 kv ckt-2 tripped 3) Relay Annunciation: Both end tripping At Bamnauli end Z-1, B-phase, distance 2.103 km , I(b) fault current 14.42 kAmp At Najafgarh end B-phase differential trip 10:34 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Ckt was parallel, load taken by ckt-1 6) Any other relevant information: work is in progress at Bamnauli end Regards, Delhi SLDC 20240602083317 2024/06/02 08:33:18 1) Name of the substation and Time: At Shalimarbagh(08:24)hrs 2) Name of element tripped/restored: 33Kv I/C-I and III. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240602083200 2024/06/02 08:32:01 1) Name of the substation and Time: At Shalimar bagh(08:00)hrs 2) Name of element tripped/restored: 33KV I/C-I and III. 3) Relay Annunciation: O/C, E/F stg-1 on 33KV I/C-III. and O/C on 33Kv I/C-I. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: TPDDL asked to c/o load. 6) Any other relevant information: Monkey electrocuted in 33KV yard. Regards, Delhi SLDC 20240602082905 2024/06/02 08:29:21 1) Name of the substation and Time: At DSIIDC(08:12)hrs 2) Name of element tripped/restored: 220KV Narela ckt-I and II. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240601221910 2024/06/01 22:19:16 1) Name of the substation and Time: At 400KV Bawana: 21:59hrs 2) Name of element tripped/restored: 400KV Maharani Bagh ckt-I and II. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240601221417 2024/06/01 22:14:20 1) Name of the substation and Time: At DSIIDC Bawana: 220KV Bawana ckt-I and II. 2) Name of element tripped/restored: 20:26hrs for Bawana ckt-I, and 20:25hrs for Bawana ckt-II . 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240601174352 2024/06/01 17:44:02 1) Name of the substation and Time: DSIDC 2) Name of element tripped/restored: At 15:40Hrs 220KV DSIDC-Bawana ckt I and II tripped at Bawana end and 220KV Narela-DSIDC ckt I and II tripped at Narela end. Load affected was 100MW. Grid staff reported fire below 220KV lines of DSIDC-Bawana ckt I and II and Narela-DSIDC ckt I and II near DSIDC grid. Discoms have been asked to shift their load. 3) Relay Annunciation: Relay at Bawana end on 220KV DSIDC ckt-I Z-1 AB-phase 3.9km Ia=11.8KA Ib=11.57KA. Relay at Bawana end on 220KV DSIDC ckt-II Z-1 3.9km RYB-phase. Relay at Narela end on 220KV DSIDC ckt-I R-phase differential. Relay at Narela end on 220KV DSIDC ckt-II YB-phase differential. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240601173109 2024/06/01 17:31:15 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 15:08Hrs 220KV Panipat ckt-II tripped on B-phase Z-1 186 AR operated. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240601172729 2024/06/01 17:27:34 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: At 14:54Hrs 220KV Mandaula ckt-II tripped on B-phase Z-1 5.7km Ib=9.12KA. No load was affected. At 17:19Hrs 220KV Mandaula ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240601172412 2024/06/01 17:24:33 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 15:53Hrs 220KV Rohtak Road ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240601150838 2024/06/01 15:08:39 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 13:22Hrs 220KV Rohtak Road ckt-I tripped on Z-1 AC-phase 13.9km Ia=3.6KA Ic=3.8KA. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240601150426 2024/06/01 15:04:52 1) Name of the substation and Time: Bawana 2) Name of element tripped/restored: At 12:19Hrs 400KV Maharani Bagh ckt-I made off manually by grid staff due to heavy sparking at common isolator. At the same time 400KV Maharani Bagh ckt-II tripped at Maharani Bagh end. CVT was coming at Bawana end. At 13:42Hrs 400KV Bawana-Maharani Bagh ckt-II charged. At 13:43Hrs 400KV Bawana-Maharani Bagh ckt-II tripped on RB-phase Z-1 Ir=28.6KA Ib=27.1KA, R-phase line jumper got snapped at Bawana end. At 13:43Hrs Bawana-Mundka ckt-I and II tripped at Mundka end on RB-phase 86, CVT was coming at Mundka end. At 14:32Hrs 400KV Bawana-Mundka ckt-I charged. At 14:35Hrs 400KV Bawana-Mundka ckt-II charged. At 14:46Hrs 400KV Bawana-Abdulapur ckt tripped at Bawana end on Z-1 R-phase 14.5km Ir=12.9KA. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240601095004 2024/06/01 09:50:10 1) Name of the substation and Time: 400KV Bawana, 08:39Hrs. 2) Name of element tripped/restored: 400KV Dipalpur restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240601094834 2024/06/01 09:48:40 1) Name of the substation and Time: 220KV PPK-III, 08:31Hrs. 2) Name of element tripped/restored: 160MVA-II along with 66KV I/C-II tripped 3) Relay Annunciation: 86 and Bucchholz on 160MVA-II and 86A and 86B on 66KV I/C-II 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 66KV Bus-Coupler charged at 08:35Hrs. and supply restored 6) Any other relevant information: Total load effected - 28MW for 04 Minutes Regards, Delhi SLDC 20240601072527 2024/06/01 07:25:29 1) Name of the substation and Time: 400 kv bawan @06.45 2) Name of element tripped/restored: 400 kv deepalpur (41452 CB) 3) Relay Annunciation: RYB PH TRIP,A/R LOCKOUT 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: 400 KV DEEPALPUR BUS -2 CB 41452 TRIPPED While 41352 CB Opend mannually to free the 400 kv bus (DTL Side) for attending 419 isolator (interconnector) hot point( wORK CARRIED OUT BY ccgt bAWANA STAFF) attendeing. Regards, Delhi SLDC 20240531193821 2024/05/31 19:38:38 1) Name of the substation and Time: 400KV Bamnauli, 19:32Hrs. 2) Name of element tripped/restored: 400KV Tughlakabad-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240531185955 2024/05/31 19:00:25 1) Name of the substation and Time: 220 kv [email protected] 2) Name of element tripped/restored: 100 mva Tr-4 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240531155900 2024/05/31 15:59:00 1) Name of the substation and Time: 400 kV bamnauli 2) Name of element tripped/restored: 15:40 hrs, 400 kV tuglakabad-1 3) Relay Annunciation: zone-1,b-phase,distance 20.34, b-pahse fault current 9.88 KA 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: nil 6) Any other relevant information: nil Regards, Delhi SLDC 20240531155849 2024/05/31 15:58:55 1) Name of the substation and Time: 400 kV bamnauli 2) Name of element tripped/restored: 15:40 hrs, 400 kV tuglakabad-1 3) Relay Annunciation: zone-1,b-phase,distance 20.34, b-pahse fault current 9.88 KA 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: nil 6) Any other relevant information: nil Regards, Delhi SLDC 20240530172110 2024/05/30 17:21:17 1) Name of the substation and Time: 220KV BTPS, 17:05Hrs. 2) Name of element tripped/restored: 220KV Ballabhgarh-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240530113817 2024/05/30 11:38:18 1) Name of the substation and Time: 220KV BTPS, 11:20Hrs. 2) Name of element tripped/restored: 220KV Ballabhgarh-II tripped 3) Relay Annunciation: R-Phase, Zone-1, F/L - 3.13Km and F/C, R-Phase - 16.265KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuits are already parallel. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240529183812 2024/05/29 18:38:19 1) Name of the substation and Time: 220KV Gazipur, 17:02Hrs. 2) Name of element tripped/restored: 160MVA-III along with 66KV I/C-III tripped 3) Relay Annunciation: SPR and Differential R-Phase on 160MVA-III and no indication on 66KV I/C-III 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 160MVA-III and 100MVA-II are already parallel. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240529183111 2024/05/29 18:31:15 1) Name of the substation and Time: 220KV BTPS, 17:16Hrs. 2) Name of element tripped/restored: 220KV Ballabhgarh-II tripped 3) Relay Annunciation: General Trip, Zone-1, 86A, R-Phase, F/L - 2.94Km and F/C, R-Phase - 16.878KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuits are already parallel. 6) Any other relevant information: 220KV Ballabhgarh-I put off due to overload and as per instruction of NRLDC for load management. Regards, Delhi SLDC 20240529181125 2024/05/29 18:11:46 1) Name of the substation and Time: 220KV PPG, 17:31Hrs. 2) Name of element tripped/restored: 66KV I/C-I and II and 66KV Bus-Coupler restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240529170659 2024/05/29 17:07:05 1) Name of the substation and Time: 220KV PPG, 16:53Hrs. 2) Name of element tripped/restored: 66KV I/C-I and II and 66KV Bus-Coupler tripped 3) Relay Annunciation: Any Trip and E/F Stage 1 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Total load effected - 50MW Regards, Delhi SLDC 20240528201516 2024/05/28 20:15:21 1) Name of the substation and Time: Masjid Moth 2) Name of element tripped/restored: At 18:40Hrs 100MVA T/F-III tripped on 86, 33KV I/C-III tripped on LV REF and 33KV Court Complex-II tripped on RB-phase. Grid staff reported blast in CT of Y-phase of 33KV I/C-III. Load affected was 51MW. At 19:45Hrs 33KV B/C closed. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240528201140 2024/05/28 20:11:46 1) Name of the substation and Time: Bamnauli 2) Name of element tripped/restored: At 17:38Hrs 220KV PPK-2 ckt-II tripped on E/F R-phase differential. ckt was at no load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240528200853 2024/05/28 20:08:59 1) Name of the substation and Time: 220kV IP 2) Name of element tripped/restored: At 18:05Hrs 33KV I/C-II tripped on O/C RYB-phase. Grid Staff reported blast in CB pole of YB-phase of 33kV Bay 9(Exhibition-II). Load affected was 75MW. At 18:10Hrs 33KV I/C-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240528160258 2024/05/28 16:03:01 1) Name of the substation and Time: 220KV Dwaraka substation @ 15:21Hrs 2) Name of element tripped/restored: 220kv Naraina Ckt-1 3) Relay Annunciation: Dist, Z-1, Faulty phase-C and 1.3KM 4) Details of physically damaged equipment: Not Observed by operator 5) Immediate corrective/system normalization steps performed: already both ckts are in parallel 6) Any other relevant information: - Regards, Delhi SLDC 20240528143908 2024/05/28 14:39:14 1) Name of the substation and Time: 220KV Tuglakabad S/stn. 2) Name of element tripped/restored: 220KV Okhla ckt-1 restored at 14:13HRS. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240528133217 2024/05/28 13:32:23 1) Name of the substation and Time: 220KV BTPS@13:03Hrs. 2) Name of element tripped/restored: 220KV Ballabgarh ckt-II 3) Relay Annunciation: Z-1,R-Phase,5.85km,12.6KA,86A,Loop L1n 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Circuits are in parallel 6) Any other relevant information: - Regards, Delhi SLDC 20240528132934 2024/05/28 13:29:39 1) Name of the substation and Time: At PPK-II @ 13:01 Hrs 2) Name of element tripped/restored: 220KV Bamnauli ckt-II 3) Relay Annunciation: Bamnauli end Dist Main-II,RYB-Phase, Diff, Inter trip, 86ABC PPK-II Z-1,RY-Phase, 8.12KM, IA=10.28KA,IB=10.27KA, Diff Trip, 86T,186AB, 86A,86B,86C 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: ckt on no load 6) Any other relevant information: - Regards, Delhi SLDC 20240528132459 2024/05/28 13:25:05 1) Name of the substation and Time: 220KV Tuglakabad @ 12:56Hrs 2) Name of element tripped/restored: 220KV Okhla Circuit-1 3) Relay Annunciation: Tuglakabad end Z-1, B-Phase, Line Diff Okhla end Z-1, B-Phase, 86 4) Details of physically damaged equipment: No information from grid operator in this regard 5) Immediate corrective/system normalization steps performed: Both ciruits are in Parallel 6) Any other relevant information: - Regards, Delhi SLDC 20240526195031 2024/05/26 19:50:32 1) Name of the substation and Time: 220 KV VSK @19.24 2) Name of element tripped/restored: 66 KV I/C-3 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240526192317 2024/05/26 19:23:24 1) Name of the substation and Time: 220 KV VSK 18.55 2) Name of element tripped/restored: 66 KV I/C -1,I/C-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240526191743 2024/05/26 19:17:49 1) Name of the substation and Time: 220 KV VSK @18.35 2) Name of element tripped/restored: 66 KV I/C -1,2,3 3) Relay Annunciation: Any trip,OC,B PH,86 4) Details of physically damaged equipment: 66 kv VSK D1 Feeder CT Blast 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240526191223 2024/05/26 19:12:29 1) Name of the substation and Time: 220 kv vasantkung @ 16.35 2) Name of element tripped/restored: 66 kv i/c-1,i/c -2,i/c 3 3) Relay Annunciation: any trip , B ph ,86 4) Details of physically damaged equipment: 66 kv VSK D1 Feeder CT Blast 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240526170739 2024/05/26 17:07:54 1) Name of the substation and Time: 220kV Narela, 16:39 Hrs 2) Name of element tripped/restored: 220kV Rohtak Road-II 3) Relay Annunciation: Phase to Ground Fault B-N Active group-1, BN trip B-Ph trip,F/L-12.84KM, Ib-3.843KA. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240526170655 2024/05/26 17:07:31 1) Name of the substation and Time: 220kV Narela, 16:39 Hrs 2) Name of element tripped/restored: 220kV Rohtak Road-II 3) Relay Annunciation: Phase to Ground Fault B-N Active group-1, BN trip B-Ph trip,F/L-12.84KM, Ib-3.843KA. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240526141325 2024/05/26 14:13:38 1) Name of the substation and Time: 220 KV Sarita Vihar:- 12:30Hrs 2) Name of element tripped/restored: 220 KV SVR-Pragati Ckt charge at 14:05 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 KV SVR-Pragati Ckt charge at 14:05 Hrs Regards, Delhi SLDC 20240526125459 2024/05/26 12:55:04 1) Name of the substation and Time: 220kV SVR, 12:30 Hrs 2) Name of element tripped/restored: 220kV Pragati (Both end) 3) Relay Annunciation: At SVR:-RYB-Phase trip, Zone-1, Ia-61.515A, Ib-132.2 A, 7.41KA, In-7.2KA, distance-3.62KM, 86 ABC, 186AB,195C. At Pragi:-CN-Phase trip, Zone-2, Ia-71.87A, Ib-135.4 A, 7.92KA, In-8.105KA, distance-12.21KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240526125436 2024/05/26 12:54:58 1) Name of the substation and Time: 220kV SVR, 12:30 Hrs 2) Name of element tripped/restored: 220kV Pragati (Both end) 3) Relay Annunciation: At SVR:-RYB-Phase trip, Zone-1, Ia-61.515A, Ib-132.2 A, 7.41KA, In-7.2KA, distance-3.62KM, 86 ABC, 186AB,195C. At Pragi:-CN-Phase trip, Zone-2, Ia-71.87A, Ib-135.4 A, 7.92KA, In-8.105KA, distance-12.21KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240525163343 2024/05/25 16:33:43 1) Name of the substation and Time: 220kV Gopalpur S/stn at 16:10 Hrs 2) Name of element tripped/restored: 220kv SOW Ckt-II 3) Relay Annunciation: Y-N, B phase , Dist- Trip, Zone -2, AR L/O Trip, Distance-2.19kM, Fault current Ib-12.31kamp, Ic-15.41 kamp, In-3.27 kAmp 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240525124547 2024/05/25 12:45:49 1) Name of the substation and Time: 220kV M/Bagh, 10:38 hrs 2) Name of element tripped/restored: At 12:37 Hrs, 220kV Gzp-1 Charged. At 12:41 Hrs, 220kV Gzp-2 Charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 12:37 Hrs, 220kV Gzp-1 Charged. At 12:41 Hrs, 220kV Gzp-2 Charged Regards, Delhi SLDC 20240525111447 2024/05/25 11:14:48 1) Name of the substation and Time: 220kV M/ bagh, 10:38 Hrs. 2) Name of element tripped/restored: 220kV GZP-II at 10:38, 220kV GZP-I at 10:42, 3) Relay Annunciation: 220kV GZP-II :-(Gen trip, R-Ph Zone-1, Distance trip, Dist-3.5KM, Il1-14.88KA, IL2-0.26KA, IL3-0.57KA) at M/Bagh end. (R-Ph Zone-1, Diff trip, Dist-16.84KM,) at Gzp end. 220kV GZP-I :-(Gen trip, R-Ph Zone-1, Distance L1-E, Dist-2.9KM, Il1-17.77KA, IL2-0.58KA, IL3-1.12KA) at M/Bagh end. and No triping at Gzp end of 220kV M/ bagh-I 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 10:48 hrs PPG- GZP Ckt put on from PPG end and system normalized 6) Any other relevant information: Load affected approx. 96 MW Regards, Delhi SLDC 20240524144322 2024/05/24 14:43:28 1) Name of the substation and Time: test message. kindly ignore 2) Name of element tripped/restored: test message. kindly ignore 3) Relay Annunciation: test message. kindly ignore 4) Details of physically damaged equipment: test message. kindly ignore 5) Immediate corrective/system normalization steps performed: test message. kindly ignore 6) Any other relevant information: test message. kindly ignore Regards, Delhi SLDC 20240524143856 2024/05/24 14:39:33 1) Name of the substation and Time: Lodhi Road 2) Name of element tripped/restored: At 13:13Hrs 16MVA T/F-IV tripped on 86. Load affected was 6MW. At 13:22Hrs 16MVA T/F-IV charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240523230653 2024/05/23 23:07:03 1) Name of the substation and Time: 220KV Kashmere Gate, 22:50Hrs. 2) Name of element tripped/restored: 100MVA-I charged at no-load, which was under shutdown for its overhauling from 22.03.2024 (10:40Hrs.) 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240523221104 2024/05/23 22:11:04 1) Name of the substation and Time: 220KV Shalimaar Bagh, 20:17Hrs. 2) Name of element tripped/restored: 220KV Bawana-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240523220928 2024/05/23 22:09:29 1) Name of the substation and Time: 220KV Shalimaar Bagh, 19:28Hrs. 2) Name of element tripped/restored: 220KV Bawana-I tripped 3) Relay Annunciation: O/C B-Phase, O/C Stage 1 and 186 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Bus-Coupler charged at 19:31Hrs. and supply restored 6) Any other relevant information: Total load effected - 40MW for 03 Minutes Regards, Delhi SLDC 20240523220228 2024/05/23 22:02:36 1) Name of the substation and Time: ignore 2) Name of element tripped/restored: ignore 3) Relay Annunciation: ignore 4) Details of physically damaged equipment: ignore 5) Immediate corrective/system normalization steps performed: ignore 6) Any other relevant information: ignore Regards, Delhi SLDC 20240522122947 2024/05/22 12:29:59 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) 220 kv subzimandi/Gopalpur line scada data (MW/MVAR) SHOWING INCORRECT.Due to this real operation are delaying and substation opereation staff also not responding timely while ther are in yard for carrying out the isolater operation. Dur to this to day 220 KV pRAGATI AND PARK STREET LINE OVER LOADED(179 MW) KINDLY RECTIFY LINE DATA AVAILABLE AT SCADA RELA TIME OPERATION DESK AS EARLY AS POSSIBLE 2) 220 kv subzimandi/Gopalpur line scada data (MW/MVAR) SHOWING INCORRECT.Due to this real operation are delaying and substation opereation staff also not responding timely while ther are in yard for carrying out the isolater operation. Dur to this to day 220 KV pRAGATI AND PARK STREET LINE OVER LOADED(179 MW) KINDLY RECTIFY LINE DATA AVAILABLE AT SCADA RELA TIME OPERATION 3) NA 4) NA 5) NA 6) NA Regards, Delhi SLDC 20240522113217 2024/05/22 11:32:24 1) Name of the substation and Time: ignore 2) Name of element tripped/restored: ignore 3) Relay Annunciation: ignore 4) Details of physically damaged equipment: ignore 5) Immediate corrective/system normalization steps performed: ignore 6) Any other relevant information: ignore Regards, Delhi SLDC 20240522083213 2024/05/22 08:32:14 1) Name of the substation and Time: At Badarpur substation @ 06:02 Hrs 2) Name of element tripped/restored: 220KV BTPS to Okhala Circkut-II 3) Relay Annunciation: W/I and W/R 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load taken by other CKT 6) Any other relevant information: Circuit try but didnt hold CVT avalible at BTPS end Regards, Delhi SLDC 20240522001655 2024/05/22 00:17:01 1) Name of the substation and Time: At Pappankalan-I (23:31)hrs 2) Name of element tripped/restored: 66KV I/C-I and III. 3) Relay Annunciation: O/C , Rphase and E/F. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240522001517 2024/05/22 00:15:19 1) Name of the substation and Time: At Pappankalan-I (23:04)hrs 2) Name of element tripped/restored: 66KV I/C-I and III. 3) Relay Annunciation: O/C, R phase and E/F. 4) Details of physically damaged equipment: R phase CB pole damaged of 66KV Hari Nagar ckt. 5) Immediate corrective/system normalization steps performed: BSES asked to C/O load, since yard report unavailable. 6) Any other relevant information: none. Regards, Delhi SLDC 20240521155902 2024/05/21 15:59:09 1) Name of the substation and Time: 220kv Gopalpur @15:48hrs 2) Name of element tripped/restored: I/commer-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240521155536 2024/05/21 15:55:37 1) Name of the substation and Time: 220kV Gopalpur@ 15:44hrs 2) Name of element tripped/restored: I/Commer-2 3) Relay Annunciation: 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240521155136 2024/05/21 15:51:37 1) Name of the substation and Time: 220kV Gopalpur 2) Name of element tripped/restored: I/Commer-2 3) Relay Annunciation: 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240521151517 2024/05/21 15:15:18 1) Name of the substation and Time: 220kv Gopal pur@15:05hrs 2) Name of element tripped/restored: 66kv I/Commer-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240521151212 2024/05/21 15:12:20 1) Name of the substation and Time: 220kv gopalpur@15hrs 2) Name of element tripped/restored: Incommer-2 3) Relay Annunciation: 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240520225205 2024/05/20 22:52:11 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: At 22:05Hrs 66KV I/C-II tripped on 86. Load affected was 16MW. At 22:45Hrs 66KV I/C-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240520184851 2024/05/20 18:48:54 1) Name of the substation and Time: Masjid Moth 2) Name of element tripped/restored: At 17:15Hrs 220KV TGBD ckt-I tripped on 96B and 100MVA T/F-3 tripped on 86. Load affected was 150MW. At 17:25Hrs 220KV B/C closed and load normalised. At 18:05Hrs 220KV TGBD ckt-I and 100MVA T/F-3 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240520173535 2024/05/20 17:35:38 1) Name of the substation and Time: At Bamnoli(16:148)hrs 2) Name of element tripped/restored: 400KV Tughlakabad ckt-II . 3) Relay Annunciation: Z-1, R phase, 13.29KM, 13.70KA. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: Load taken on other ckt. 6) Any other relevant information: none. Regards, Delhi SLDC 20240520115924 2024/05/20 11:59:26 1) Name of the substation and Time: 220KV Lodhi Road at 09:14Hrs. 2) Name of element tripped/restored: 33KV Incomer No-III 3) Relay Annunciation: No relay on incomer-III and 86B appear on associated Buys 4) Details of physically damaged equipment: No physical damage intimated by lodhi road operater 5) Immediate corrective/system normalization steps performed: Load affected = 1925 Amps 6) Any other relevant information: load normalised at 10:25 Hrs Regards, Delhi SLDC 20240520032521 2024/05/20 03:25:41 1) Name of the substation and Time: 400kV Bawana S/stn at 00:46 Hrs 2) Name of element tripped/restored: 400/220kV ICT -I, 400/220kV ICT -IV, 400/220kV ICT -V 400/220kV ICT -VI (All above ICT s Load disappeared and supply failed at 400kV Bawana S/stn) 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Approx.Load affected 1086 MW of 220kV Shalimar Bagh, SGTN, Rohini-I Ckt I and II, 220kV DSIDC Bawana Ckt I and II, DMRC Ckt I and II. Following At 01:32 Hrs 400/220kV ICT -I charged and 400/220kV ICT -IV, At 02.:11 Hrs 400/220kV ICT -V and 400/220kV ICT -VI System normalised at 02:09 Hrs. Regards, Delhi SLDC 20240519221032 2024/05/19 22:10:33 1) Name of the substation and Time: 400 KV Bamnauli 22:01 Hrs 2) Name of element tripped/restored: 400 KV Tunglakabad ckt-II charged at 22:01 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 400 KV Tunglakabad ckt-II charged at 22:01 Regards, Delhi SLDC 20240519184804 2024/05/19 18:48:06 1) Name of the substation and Time: 220 KV Najafgarh 18:40 Hrs 2) Name of element tripped/restored: 220 KV Bamnauli- Najafgarh ckt-I charge at 18:40 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 KV Bamnauli- Najafgarh ckt-I charge at 18:40 Hrs Regards, Delhi SLDC 20240519170250 2024/05/19 17:02:52 1) Name of the substation and Time: 220KV Najafgarh @ 15:45Hrs. 2) Name of element tripped/restored: 220KV Bamnauli ckt-1 3) Relay Annunciation: NJF Side:- Line diff trip, R-Phase, 86T, 186A,186B. Bamanuli side- M1, 86T, 86ABC, Auto reclose, 186ABC, R-phase, Dist-9.9km,IA-9.4KA M2,SOTF, IA-9.38KA,Dist-10.09KM 4) Details of physically damaged equipment: Not imtimated by station operated 5) Immediate corrective/system normalization steps performed: Load normalised 6) Any other relevant information: nothing Regards, Delhi SLDC 20240519144130 2024/05/19 14:41:33 1) Name of the substation and Time: At Bamnoli(13:22)hrs 2) Name of element tripped/restored: 400KV Tughlakabad ckt-II. 3) Relay Annunciation: R phase, Z-1, 12.89KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other ckt. 6) Any other relevant information: none. Regards, Delhi SLDC 20240519065514 2024/05/19 06:55:14 1) Name of the substation and Time: 220KV Park Street, 06:24Hrs. 2) Name of element tripped/restored: 220KV Pragati-II tripped 3) Relay Annunciation: R-Phase, 86, 86A and 86B at Park Street end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Bus-Coupler charged at 06:37Hrs. and supply restored 6) Any other relevant information: No tripping found at Pragati end Regards, Delhi SLDC 20240519004038 2024/05/19 00:40:47 1) Name of the substation and Time: 220 KV RKP #@00.09 HRS 2) Name of element tripped/restored: 220 KV VSK CKT-2 3) Relay Annunciation: 86,DIFF OPTD ,APH TRIPP 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: Oeration staff unable to read fault current details Regards, Delhi SLDC 20240519001333 2024/05/19 00:13:40 1) Name of the substation and Time: 220 kv vsk @00.06 hrs 2) Name of element tripped/restored: 220 kv rkp ckt-2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240518230335 2024/05/18 23:03:41 1) Name of the substation and Time: 220 kv vasantkunj @21.48 2) Name of element tripped/restored: 220 kv RKP- ckt-2 3) Relay Annunciation: grp A,86AB,RPH,Z1,DIFF OPTD 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 220 KV MEHRAULI CKT-2 CHARGED @ 21.51 AND LOAD TAKEN 6) Any other relevant information: OPRN STAFF UNABLE TO READ FAULT CURRENT DATA AND CVT AVAILABLE Regards, Delhi SLDC 20240518222043 2024/05/18 22:20:44 1) Name of the substation and Time: 220KV Masjid Moth, 21:48Hrs. 2) Name of element tripped/restored: 220KV Maharani Bagh-I tripped 3) Relay Annunciation: R-Phase, Zone-1 and 86 at Masjid Moth end and General trip, R-Phase, Zone-1, F/L - 2.3Km and F/C, R-Phase - 18.36KA at Maharani Bagh end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Bus-Coupler charged at 21:55Hrs. and supply restored 6) Any other relevant information: Total load effected - 106MW for 07 Minutes Regards, Delhi SLDC 20240518213009 2024/05/18 21:30:10 1) Name of the substation and Time: 400KV Bamnauli, 19:40Hrs. 2) Name of element tripped/restored: 400KV Tughlakabad-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240518134042 2024/05/18 13:41:11 1) Name of the substation and Time: 400kV Bamnauli S/stn at 13:13 Hrs 2) Name of element tripped/restored: 400kV Tughlakabad Ckt-II 3) Relay Annunciation: Line diff Optd, R phase, zone-1 Fault current Ia-11:62 kAmp, Dist-13.32kM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240518080603 2024/05/18 08:06:04 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: At 06:47Hrs 220KV Pragati ckt-II tripped on RY-phase O/C 86. Circuit was charged from Pragati end. Grid staff reported electrocution of monkey. Load affected was 95MW (66KV Park Street and 220KV Dev Nagar). At 07:47Hrs 220KV Pragati ckt-II charged. At 07:48Hrs 100MVA 220/66KV T/F-I and II charged which were made off manually by grid staff. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240517231428 2024/05/17 23:14:29 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: At 22:25Hrs 66KV I/C-II tripped on 86. Load affected was 50MW. At 23:02Hrs 66KV I/C-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240517153917 2024/05/17 15:39:19 1) Name of the substation and Time: 400kV Bamnauli S/stn 15:22 Hrs 2) Name of element tripped/restored: 400kV Tuglakabad Ckt-II 3) Relay Annunciation: Zone-1, A-Phase trip, Dist.-13.15KM, F/C Ia-12.33KA, In-13.09 KA, 400kV Voltage (CVT) not appeared BNL end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affaected Regards, Delhi SLDC 20240517120917 2024/05/17 12:09:33 1) Name of the substation and Time: 400/220kV Bamnauli s/stn at 11:45 Hrs 2) Name of element tripped/restored: 220kV DIAL Ckt-I 3) Relay Annunciation: Zone-I, Distance-2.11kM, A phase, Ia=15.37kAmp, Ib-15.23 kAmp 86 A and B operated at Bamnauli End 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: The DIAL circuit-I is at no load Regards, Delhi SLDC 20240517004450 2024/05/17 00:45:11 1) Name of the substation and Time: At Geeta colony(00:18)hrs 2) Name of element tripped/restored: 220KV Patparganj ckt-I. 3) Relay Annunciation: PD, RYB phase interlocking,295RYB. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240517002609 2024/05/17 00:26:11 1) Name of the substation and Time: At Geeta colony(23:21)hrs 2) Name of element tripped/restored: 220KV Patparganj ckt-I . 3) Relay Annunciation: Pole Discrepancy. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other ckt. 6) Any other relevant information: none. Regards, Delhi SLDC 20240517001432 2024/05/17 00:14:37 1) Name of the substation and Time: At Okhla(23:20)hrs. 2) Name of element tripped/restored: 220KV BTPS ckt-II. 3) Relay Annunciation: Tripped W/I. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240517001257 2024/05/17 00:13:03 1) Name of the substation and Time: At Okhla(22:58)hrs 2) Name of element tripped/restored: 220KV BTPS ckt-II 3) Relay Annunciation: Tripped W/I. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: No load was affected. 6) Any other relevant information: CVT of BTPS available at Okhla station. Regards, Delhi SLDC 20240516134659 2024/05/16 13:47:01 1) Name of the substation and Time: 220KV SOW @ 13:24Hrs 2) Name of element tripped/restored: 220kV Mandola-SOW Ckt III tripeed. Relay B Ph., Differential, AR Lockout, Dist 21.17km(False data), Fault current B Ph. 1.532kA, Neutral- 5.27kA 3) Relay Annunciation: ----------- 4) Details of physically damaged equipment: ----------- 5) Immediate corrective/system normalization steps performed: ------------ 6) Any other relevant information: ------------ Regards, Delhi SLDC 20240516080216 2024/05/16 08:02:23 1) Name of the substation and Time: 220 KV DWARAKA @07.35 2) Name of element tripped/restored: 220 KV NARAINA LINE CB TRIPPED. CVT AVAILABLE 3) Relay Annunciation: 186 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240515133239 2024/05/15 13:32:46 1) Name of the substation and Time: Lodhi Road 2) Name of element tripped/restored: At 09:43Hrs 220KV Maharani Bagh ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240514233659 2024/05/14 23:37:05 1) Name of the substation and Time: 220kV M. Bagh, 23:00 Hrs 2) Name of element tripped/restored: 220kV Lodhi Rd. -II 3) Relay Annunciation: At MB end:- Zone-1, Gen trip, B-Ph, F/C-Il1-0.20KA, Il2-0.34KA, Il3-22.41 KA, dist.-0.6KM. At L. Rd end:-Dist.Zone-1, Ph-C, CN, 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: B/C put on at 23:08 hrs.and system normalized 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240514232841 2024/05/14 23:28:46 1) Name of the substation and Time: 220kV P. Street, 23:01 Hrs 2) Name of element tripped/restored: 220/66kV, 100 MVA Tx.-II 3) Relay Annunciation: Trip ckt-suppervion relay 295C, 86 A,B,C opt. Diff relay (HV REF} 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: This Tx was charged/commissioned on dt. 13.05.2024 at 20:20 Hrs which was under no load for 24 hrs. Regards, Delhi SLDC 20240514232810 2024/05/14 23:28:40 1) Name of the substation and Time: 220kV P. Street, 23:01 Hrs 2) Name of element tripped/restored: 220/66kV, 100 MVA Tx.-II 3) Relay Annunciation: Trip ckt-suppervion relay 295C, 86 A,B,C opt. Diff relay (HV REF} 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: This Tx was charged/commissioned on dt. 13.05.2024 at 20:20 Hrs which was under no load for 24 hrs. Regards, Delhi SLDC 20240514141307 2024/05/14 14:13:17 1) Name of the substation and Time: 220 kv Mehrouli @14.10 2) Name of element tripped/restored: 220kv dial 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240514125305 2024/05/14 12:53:16 1) Name of the substation and Time: 220 kv daial @12.28 2) Name of element tripped/restored: 220 kv mehrauli ckt-2 3) Relay Annunciation: z2,bph,gen trip 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240514080507 2024/05/14 08:05:10 1) Name of the substation and Time: 220KV Lodhi Road at 02:12Hrs. 2) Name of element tripped/restored: 33KV-I/C-01 and 20MVA tr no-1 3) Relay Annunciation: only 86B 4) Details of physically damaged equipment: no physical damage as per grid operator 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: load is affected that was shifted Regards, Delhi SLDC 20240513203538 2024/05/13 20:35:40 1) Name of the substation and Time: At Parkstreet(20:20)hrs. 2) Name of element tripped/restored: BHEL make 100MVA-II(220/66)KV Transformer. 3) Relay Annunciation: differential B phase. 4) Details of physically damaged equipment: Previous Transformer unfit for loading. 5) Immediate corrective/system normalization steps performed: Transformer replaced with CGL make. 6) Any other relevant information: CGL Transformer charged on NO load for observation and testing. Regards, Delhi SLDC 20240513175020 2024/05/13 17:50:23 1) Name of the substation and Time: 400KV Bawana, 17:40Hrs. 2) Name of element tripped/restored: 220KV DSIDC Bawana-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240513163509 2024/05/13 16:35:14 1) Name of the substation and Time: 220 KV KNJHAWALA @16.30 2) Name of element tripped/restored: 220 KV BAWANA CKT-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240513163441 2024/05/13 16:35:08 1) Name of the substation and Time: 220 KV KNJHAWALA @16.30 2) Name of element tripped/restored: 220 KV BAWANA CKT-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240513141002 2024/05/13 14:10:03 1) Name of the substation and Time: 220 kv knjhawala @13.48 2) Name of element tripped/restored: 220 kv bawana ckt-2 3) Relay Annunciation: supplay fail .no relay optd/indication 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: load taken on 220 kv munduka ckt Regards, Delhi SLDC 20240513140205 2024/05/13 14:02:12 1) Name of the substation and Time: 220 kV DSIDC BAWANA @13.35 2) Name of element tripped/restored: 220 kv bawana ckt-2 3) Relay Annunciation: z1,yb ph trip,86,-1.31 km 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: 13.40 220 kv narela ckt-2 made on and load restored Regards, Delhi SLDC 20240513120501 2024/05/13 12:05:03 1) Name of the substation and Time: 400KV Bawana, 11:44Hrs. 2) Name of element tripped/restored: 220KV Kanjhawala-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240513094336 2024/05/13 09:43:38 1) Name of the substation and Time: 400 kv bawana @09.14 hrs 2) Name of element tripped/restored: 220 kv knj ckt-2 3) Relay Annunciation: z1, c ph,7.266 km, if =5.684 kA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240512004224 2024/05/12 00:42:31 1) Name of the substation and Time: 220kV PPK-II at 22:06 Hrs 2) Name of element tripped/restored: 100MVA, 220/66kV Pr Trf no-II with 66kV I/C no-II 66kV Bus coupler 66kV Incomer no-IV 3) Relay Annunciation: 100MVA, 220/66kV Pr Trf no-II with 66kV I/C no-II tripped on REF , Main -I operated, Trip Ckt-I faulty 66kV Bus coupler Tripped on IDMT, O/C, E/F, Trip Ckt-I faulty 66kV Incomer no-IV tripped on LBB, O/C, Trip Ckt-I faulty 4) Details of physically damaged equipment: 66kV Y phase LA damaged of 66kV I/C no-II and 66kV Bus coupler R phase CT clamp hotpoint 5) Immediate corrective/system normalization steps performed: system normalised at 23:09 Hrs. Except 100MVA, 220/66kV Pr Trf no-II with 66kV I/C no-II and 66kV Bus coupler 6) Any other relevant information: Load affected approx.166 MW. Regards, Delhi SLDC 20240511135526 2024/05/11 13:55:31 1) Name of the substation and Time: At Kanjhawla(13:17)hrs 2) Name of element tripped/restored: 220KV Bawana ckt-I. 3) Relay Annunciation: R phase, Z-I, O/C. 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: 220KV B/C was in ON position. 6) Any other relevant information: none. Regards, Delhi SLDC 20240511113800 2024/05/11 11:38:07 1) Name of the substation and Time: At Kanjhawala(10:21)hrs 2) Name of element tripped/restored: 220KV Bawana ckt-I 3) Relay Annunciation: R phase, zone-1, D/P, O/C . 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: No load was affected. 6) Any other relevant information: none. Regards, Delhi SLDC 20240511085116 2024/05/11 08:51:19 1) Name of the substation and Time: 220KV Najafgarh, 08:45Hrs. 2) Name of element tripped/restored: 220KV Kanjhawala restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240511025605 2024/05/11 02:56:07 1) Name of the substation and Time: 400KV Bamnauli, 02:35Hrs. 2) Name of element tripped/restored: 220KV PPK1-I and II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240511020925 2024/05/11 02:09:30 1) Name of the substation and Time: 220 KV SMB @02.06 2) Name of element tripped/restored: 220 KV SGTN CKT-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NNA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240511020856 2024/05/11 02:09:24 1) Name of the substation and Time: 220 KV SMB @02.06 2) Name of element tripped/restored: 220 KV SGTN CKT-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NNA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240511014711 2024/05/11 01:47:11 1) Name of the substation and Time: 220 kv NJF @21.54 2) Name of element tripped/restored: 220 KV KNJHAWALA 3) Relay Annunciation: Z1,86,CKT UNDER NO LOAD CONDITION 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240511010625 2024/05/11 01:06:30 1) Name of the substation and Time: 220 kv gopal pur @01.01 hrs 2) Name of element tripped/restored: 220 kv mandola ckt-2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240511010440 2024/05/11 01:04:47 1) Name of the substation and Time: 400 KV BAWANA @00.58 HRS 2) Name of element tripped/restored: 220 KV ROHINI-1 ckt-i and ii 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240510234829 2024/05/10 23:48:34 1) Name of the substation and Time: 220 KV BML @23.20 2) Name of element tripped/restored: 220 KV NJF CKT-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240510234716 2024/05/10 23:47:17 1) Name of the substation and Time: 220 KV SGTN @21.45 2) Name of element tripped/restored: SMB CKT-2 3) Relay Annunciation: DIFF TRIP,Z, R PH,86 ,17.89 KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240510231752 2024/05/10 23:18:12 1) Name of the substation and Time: 220 KV NARAINA @22.00 2) Name of element tripped/restored: DWARAKA CKT-2 3) Relay Annunciation: DIFF TRIP,R PH 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240510230905 2024/05/10 23:09:10 1) Name of the substation and Time: 400 KV BML @21.54 2) Name of element tripped/restored: 220 KV PPK-2 CKT-2 3) Relay Annunciation: B PH ,Z2,7.16 KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240510230735 2024/05/10 23:07:40 1) Name of the substation and Time: 400 KV BML 21.54 2) Name of element tripped/restored: 220 KV PPK-1- CKT-1 3) Relay Annunciation: Z2,86,RYB PH TRIP 8.55 KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240510230707 2024/05/10 23:07:34 1) Name of the substation and Time: 400 KV BML 21.54 2) Name of element tripped/restored: 220 KV PPK-1- CKT-1 3) Relay Annunciation: Z2,86,RYB PH TRIP 8.55 KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240510230413 2024/05/10 23:04:18 1) Name of the substation and Time: 400 KV BAMMNAOULI 21.54 2) Name of element tripped/restored: 220 KV NJF CKT-2 3) Relay Annunciation: Z1 ,86 1.94 KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240510230105 2024/05/10 23:01:11 1) Name of the substation and Time: 400 KV BAWANA @21.51 2) Name of element tripped/restored: 400 KB MAHARANIBAGH-CKT-1 3) Relay Annunciation: B PH ,Z1,13.28 KM,186 AB 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240510225929 2024/05/10 22:59:36 1) Name of the substation and Time: 400 KV BAWANA 21.51 2) Name of element tripped/restored: 220 KV ROHINI-2 3) Relay Annunciation: Y,B PH TRIP Z1 OPTD 7.9 KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240510223859 2024/05/10 22:39:26 1) Name of the substation and Time: 400 kv bawana 21.42 2) Name of element tripped/restored: 220 KV ROHINI-1 3) Relay Annunciation: AB TRIP Z2 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: FIRE REPOETRED in the yard Regards, Delhi SLDC 20240506134435 2024/05/06 13:44:38 1) Name of the substation and Time: 220KV Mehrauli, 13:38Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240506132728 2024/05/06 13:27:34 1) Name of the substation and Time: 400KV Bamnauli, 11:57Hrs. 2) Name of element tripped/restored: 220KV PPK-I Ckt.-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240506123526 2024/05/06 12:35:26 1) Name of the substation and Time: 220KV Geeta Colony, 12:30Hrs. 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240506112223 2024/05/06 11:22:27 1) Name of the substation and Time: 220KV Mehrauli, 10:50Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-II tripped 3) Relay Annunciation: R-Phase, Differential, 195AC, 195BC, 195CC, 80BC and Fault Location - 13.8Km at Mehrauli end and General Trip, R-Phase, Zone-1, Zone-2, Carrier Send, RYB Phase, 3-Phase Initiate, Line Differential Trip, Fault Location - 2.30Km and Fault Current, R-Phase - 23.667KA at Tughlakabad end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuits are already parallel 6) Any other relevant information: Nil Regards, Delhi SLDC 20240506080533 2024/05/06 08:05:40 1) Name of the substation and Time: At Bamnoli(05:17)hrs 2) Name of element tripped/restored: 220KV Pappankalan-I ckt-II 3) Relay Annunciation: B phase,A/R operated, 86 A and B. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Pappankalan-I. 6) Any other relevant information: none. Regards, Delhi SLDC 20240506074535 2024/05/06 07:45:41 1) Name of the substation and Time: 220KV Geeta colony 2) Name of element tripped/restored: I/C-2 normalised at 06:35 HRS. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Bus coupler normalised at 06:37HRS. 6) Any other relevant information: - Regards, Delhi SLDC 20240506074345 2024/05/06 07:43:51 1) Name of the substation and Time: 220KV Geeta Colony @06:01 HRS 2) Name of element tripped/restored: 100MVA-1 alongwith I/C-I and I/C-II 3) Relay Annunciation: 01. 100MVA-1 = 30e, 86, HV-REF 02. I/C-1 = 30,CB Auto Trip, O/C, 86, LV-REF 03. I/C-2 = 75M2, High Set trip 4) Details of physically damaged equipment: Monkey entered at y-phase CT 5) Immediate corrective/system normalization steps performed: Load normal thorugh B/C 6) Any other relevant information: - Regards, Delhi SLDC 20240505084020 2024/05/05 08:40:27 1) Name of the substation and Time: Naraina 2) Name of element tripped/restored: At 07:52Hrs 33KV I/C-II tripped on O/C RYB-phase and R-phase CB pole got blast. 33KV I/C-I tripped on O/C- R-phase. 33KV I/C-III tripped on O/C B-phase. Grid staff reported control cables cought fire. Load affected was approx 97MW. Discoms have been asked to shift the load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240504135343 2024/05/04 13:53:49 1) Name of the substation and Time: At Masjid Moth (13:51) hrs 2) Name of element tripped/restored: 220KV Tughlakabad ckt-I. 3) Relay Annunciation: Grp A, 86. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Masjid Moth. 6) Any other relevant information: - Regards, Delhi SLDC 20240504135151 2024/05/04 13:51:58 1) Name of the substation and Time: At Masjid Moth(12:35)hrs 2) Name of element tripped/restored: 220KV Tughlakabad ckt-I 3) Relay Annunciation: Group A, 86. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Masjid Moth. 6) Any other relevant information: No tripping at Tughlakabad end. Regards, Delhi SLDC 20240504054157 2024/05/04 05:42:03 1) Name of the substation and Time: 400kV Bamnauli S/stn at 05:09 Hrs 2) Name of element tripped/restored: 220kV PPK-III Ckt-II 3) Relay Annunciation: Current differential trip, R phase , Fault current-16.76 kAmp 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240503125737 2024/05/03 12:57:40 1) Name of the substation and Time: 220KV M.bagh and 11:45Hrs 2) Name of element tripped/restored: 220KV Pragati Circuit 3) Relay Annunciation: ckt trip With out relay 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: Dirction giving to operation staff to check relay healthyness 6) Any other relevant information: -- Regards, Delhi SLDC 20240502191845 2024/05/02 19:18:47 1) Name of the substation and Time: 220 kv maharanibagh @19.08 2) Name of element tripped/restored: 220 kv pragati 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240502183331 2024/05/02 18:33:32 1) Name of the substation and Time: 220 kv Maharanibagh @18.10 2) Name of element tripped/restored: 220 kv pragati 3) Relay Annunciation: 86 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240501155948 2024/05/01 15:59:49 1) Name of the substation and Time: 220kV Dwaraka S/stn at 15:44 Hrs 2) Name of element tripped/restored: 220kV Naraina Ckt-II 3) Relay Annunciation: Distance protection, Zone-1, A phase, Fault current-22913 Amp, Distance-1.0 kM at Dwaraka S/stn Line diffential, R phase, any trip, 86 master relay , auto-reclose at Nariana S/stn 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20240501140605 2024/05/01 14:06:08 1) Name of the substation and Time: 220kV M/ Bagh,13:20 2) Name of element tripped/restored: 220kV Electric Lane-II 3) Relay Annunciation: Without indication , and DC supply failled 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 13:38 Hrs charged and no load affected at 220kV Electric lane end and CVT alreday available at MB end 6) Any other relevant information: DC supply restored by Battery charger and Battery Banks are under Break-down Regards, Delhi SLDC 20240501085917 2024/05/01 08:59:22 1) Name of the substation and Time: At IP(07:58)hrs 2) Name of element tripped/restored: 33KV I/C-III 3) Relay Annunciation: O/C, Y phase and E/F. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240501085750 2024/05/01 08:57:55 1) Name of the substation and Time: At IP(07:20)hrs 2) Name of element tripped/restored: 33KV I/C-III. 3) Relay Annunciation: O/C, Y phase and E/F. 4) Details of physically damaged equipment: Earth strip of 33KV Bay-3 Kilokari damaged. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: none. Regards, Delhi SLDC 20240501074258 2024/05/01 07:42:59 1) Name of the substation and Time: At Bamnoli(05:10)hrs 2) Name of element tripped/restored: 220KV Pappankalan-III. 3) Relay Annunciation: B phase, differential protection, 32.29KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: No load was affected. 6) Any other relevant information: ckt was charged at NO load from Bamnoli end. Regards, Delhi SLDC 20240430161410 2024/04/30 16:14:16 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: At 15:24Hrs 220KV Wazirabad ckt-II tripped at Gopalpur end on Y-phase Z-1 2.85m. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240430000126 2024/04/30 00:01:27 1) Name of the substation and Time: 220 KV STATION @ 23.55 2) Name of element tripped/restored: 33 KV I/C -3 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: RESTORED Regards, Delhi SLDC 20240429234803 2024/04/29 23:48:03 1) Name of the substation and Time: 220 kv ip station @23.30 2) Name of element tripped/restored: 33 kv i/c -3 3) Relay Annunciation: OC,B PH trip 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: informed discom to divert the load Regards, Delhi SLDC 20240429081711 2024/04/29 08:17:32 1) Name of the substation and Time: 220 KV Narala 07:55Hrs 2) Name of element tripped/restored: 20 MVA PTr-II along with 11 KV I/C-II 3) Relay Annunciation: Without indication on Tr .Eartn Fault on 11 KV I/C-II 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 11 KV bus section put on at 08:05Hrs, system normal 6) Any other relevant information: Approx.load effected 03 MW Regards, Delhi SLDC 20240428154856 2024/04/28 15:49:02 1) Name of the substation and Time: 220 KV HCML @15.26 2) Name of element tripped/restored: 100 MVA TR-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240428110051 2024/04/28 11:00:51 1) Name of the substation and Time: 220 KV HCML @07.20 2) Name of element tripped/restored: 100 MVA TR-2 Along with I/c-2 3) Relay Annunciation: DIFF OPTD,86 OPTD 4) Details of physically damaged equipment: MONKEY JUMP 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240427154702 2024/04/27 15:47:07 1) Name of the substation and Time: 220 KV MAHARANIBAGH @15.45 2) Name of element tripped/restored: 220 KV PRAGATI 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240427144301 2024/04/27 14:43:23 1) Name of the substation and Time: 220 kv maharanibagh @13.55 2) Name of element tripped/restored: 220 kv pragati 3) Relay Annunciation: tripped w/o indication and relay 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: no load effected 6) Any other relevant information: oprn staff informed no relay no alaram found/noticed Regards, Delhi SLDC 20240427135243 2024/04/27 13:52:44 1) Name of the substation and Time: 220 kv sow @ 12.40 2) Name of element tripped/restored: 220 kv geetacoliny ckt-1 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240426211122 2024/04/26 21:11:28 1) Name of the substation and Time: Rajghat 2) Name of element tripped/restored: At 20:25Hrs 33KV I/C-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240426210530 2024/04/26 21:05:57 1) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 19:52Hrs 33KV I/C-5 tripped on E/F Y-phase. Load affected was 20MW. At 19:54Hrs 33KV B/C closed and load normalised. At 19:58Hrs 33KV I/C-3 tripped on RYB-phase 86 and 33KV I/C-4 tripped on O/C RYB-phase. Load affected was 21MW. At 20:11Hrs 33KV I/C-3, 33KV I/C-4 and 33KV I/C-5 charged and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240426205922 2024/04/26 20:59:28 1) Name of the substation and Time: Wazirabad 2) Name of element tripped/restored: At 19:58Hrs 220KV Wazirabad-Geeta Colony ckt-I tripped. No load was affected. 3) Relay Annunciation: Relay at Wazirabad end B-phase Z-1 tripped phase C-N AR lockout fault duration 60ms 4.6km Ia=868A Ib=1.2KA Ic=11.45KA In=9.3KA. Relay at Geeta Colony end B-phase Z-1 tripped phase C-N 2.1km Ia=864A Ib=1.2KA Ic=7.9KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240426195120 2024/04/26 19:51:20 1) Name of the substation and Time: Najafgarh 2) Name of element tripped/restored: At 18:57Hrs 220KV Bamnauli ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240426193059 2024/04/26 19:31:05 1) Name of the substation and Time: Wazirabad 2) Name of element tripped/restored: At 18:04Hrs 220KV Geeta Colony ckt-I tripped at Wazirabad end. At 18:05Hrs 220KV Geeta Colony ckt-II tripped at Wazirabad end. Load affected was approx 450MW (220KV Geeta Colony, 220KV IP, 220KV Rajghat and 33KV Park Street) At 18:18Hrs 220KV Geeta Colony ckt-I charged. At 18:21Hrs 220KV Geeta Colony ckt-II charged. 3) Relay Annunciation: Relay at Wazirabad end on 220KV Geeta Colony ckt-I are RYB-phase trip 8.3km started phase Ac-N Fault duration=698ms 86 E/F AR lockout. Ia=10.9KA Ib=355A Ic=3.2KA In=8.06KA. Relay at Wazirabad end on 220KV Geeta Colony ckt-II are B-phase trip Z-1 8.35km 86 AR lockout started phase AC-N tripped phase C-N Fault duration=109ms. Ia=2.81KA Ib=4.5A Ic=11.51KA In=8.1KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240426193042 2024/04/26 19:30:48 1) Name of the substation and Time: Wazirabad 2) Name of element tripped/restored: At 18:04Hrs 220KV Geeta Colony ckt-I tripped at Wazirabad end. At 18:05Hrs 220KV Geeta Colony ckt-II tripped at Wazirabad end. Load affected was approx 450MW (220KV Geeta Colony, 220KV IP, 220KV Rajghat and 33KV Park Street) At 18:18Hrs 220KV Geeta Colony ckt-I charged. At 18:21Hrs 220KV Geeta Colony ckt-II charged. 3) Relay Annunciation: Relay at Wazirabad end on 220KV Geeta Colony ckt-I are RYB-phase trip 8.3km started phase Ac-N Fault duration=698ms 86 E/F AR lockout. Ia=10.9KA Ib=355A Ic=3.2KA In=8.06KA. Relay at Wazirabad end on 220KV Geeta Colony ckt-II are B-phase trip Z-1 8.35km 86 AR lockout started phase AC-N tripped phase C-N Fault duration=109ms. Ia=2.81KA Ib=4.5A Ic=11.51KA In=8.1KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240426173725 2024/04/26 17:37:32 1) Name of the substation and Time: At Rajghat(15:05)hrs 2) Name of element tripped/restored: 33KV I/C-I. 3) Relay Annunciation: Incomer put Off manually. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240426150925 2024/04/26 15:09:32 1) Name of the substation and Time: At RPH(13:15)hrs 2) Name of element tripped/restored: 33KV I/C-I and 33KV I/C-II. 3) Relay Annunciation: I/C-I tripped manually, while I/C-II tripped W/I. 4) Details of physically damaged equipment: 33KV Bus-I PT caught fire and 33KV R and B phase Line isolator clamp of 33KV I/C-II found burnt. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: none. Regards, Delhi SLDC 20240426134956 2024/04/26 13:49:57 1) Name of the substation and Time: 220KV Najafgarh substation at 12:46Hrs 2) Name of element tripped/restored: 220KV Bamanauli Ckt-II (Trip at both end) 3) Relay Annunciation: Najafgarh End= 186, B-Ph Line diff trip. Bamanuli End= B-Ph Diff trip, 186A,186B, 86A,86B,86C, Diff inter trip. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220KV B/C on at 12:50Hrs. 6) Any other relevant information: -- Regards, Delhi SLDC 20240425213116 2024/04/25 21:31:44 1) Name of the substation and Time: 220kV Lodhi Road 2) Name of element tripped/restored: 220kV Maharani Bagh Ckt-I restored at 21:25 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240425184126 2024/04/25 18:41:32 1) Name of the substation and Time: 220kV Lodhi Road at 18:09 Hrs 2) Name of element tripped/restored: 220kV Maharani Bagh Ckt-I 3) Relay Annunciation: Relay-LOR 1, LOR 2, Differential R and Y phase at Lodhi Road S/tsn Distance pick up L12 , Distance 1.2 kM, Fault current-IL1-20.06 kAmp, IL2-20.37 kAmp IL3-0.21 kAmp at Maharani Bagh S/stn 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: System Normilise through 220 kV Bus coupler at 18:11 Hrs 6) Any other relevant information: Load affected Apprx.78 MW Regards, Delhi SLDC 20240424214253 2024/04/24 21:42:54 1) Name of the substation and Time: 220kv Masjid moth @21.40 2) Name of element tripped/restored: 220kV Tughlakabad Ckt-I and 100MVA ,220/33kV Pr Trf no-III alongwith 33kV Incomer no-III 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240424164931 2024/04/24 16:49:37 1) Name of the substation and Time: 220kV Masjid Moth at 16:15 Hrs 2) Name of element tripped/restored: 220kV Tughlakabad Ckt-I and 100MVA ,220/33kV Pr Trf no-III alongwith 33kV Incomer no-III 3) Relay Annunciation: 1.220kV Tughlakabad Ckt-I, relay Grb operated , annuciation failed at Masjid Moth End. CVT appearing from 220kv Tughlakabad s/stn 2.100MVA ,220/33kV Pr Trf no-III alongwith 33kV Incomer no-III relay 86 operated 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220kV and 33kV Bus coupler closed and system normalised at 16:25 Hrs 6) Any other relevant information: Load affected 130 MW approx. Regards, Delhi SLDC 20240423201907 2024/04/23 20:19:08 1) Name of the substation and Time: Gazipur 2) Name of element tripped/restored: At 18:15Hrs 160MVA T/F-3 tripped on SPR. No load was affected. At 20:05Hrs 160MVA T/F-3 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240423201548 2024/04/23 20:15:49 1) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: At 18:51Hrs 220KV Pragati-Sarita Vihar ckt charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240423181010 2024/04/23 18:10:13 1) Name of the substation and Time: 220kV sarita vihar 2) Name of element tripped/restored: 220 kV Pragati 3) Relay Annunciation: 17:30 hrs, dist zone-1,trip R-Y,dist -3.396 kms 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: nil 6) Any other relevant information: nil Regards, Delhi SLDC 20240422090106 2024/04/22 09:01:07 1) Name of the substation and Time: 220KV Sabji Mandi, 08:50Hrs. 2) Name of element tripped/restored: 220KV Bus-Section and 100MVA-I along with 33KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240422052140 2024/04/22 05:22:07 1) Name of the substation and Time: 220KV Gazipur, 05:06Hrs. 2) Name of element tripped/restored: 160MVA-III along with 66KV I/C-III restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240422032202 2024/04/22 03:22:07 1) Name of the substation and Time: 220KV Gazipur, 03:10Hrs. 2) Name of element tripped/restored: 160MVA-III along with 66KV I/C-III tripped 3) Relay Annunciation: Tripped coil unhealthy 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: 100MVA-II and 160MVA-III are already parallel 6) Any other relevant information: N/A Regards, Delhi SLDC 20240422032156 2024/04/22 03:22:01 1) Name of the substation and Time: 220KV Gazipur, 03:10Hrs. 2) Name of element tripped/restored: 160MVA-III along with 66KV I/C-III tripped 3) Relay Annunciation: Tripped coil unhealthy 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: 100MVA-II and 160MVA-III are already parallel 6) Any other relevant information: N/A Regards, Delhi SLDC 20240422032127 2024/04/22 03:21:55 1) Name of the substation and Time: 220KV Gazipur, 03:10Hrs. 2) Name of element tripped/restored: 160MVA-III along with 66KV I/C-III tripped 3) Relay Annunciation: Tripped coil unhealthy 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: 100MVA-II and 160MVA-III are already parallel 6) Any other relevant information: N/A Regards, Delhi SLDC 20240421213612 2024/04/21 21:36:13 1) Name of the substation and Time: 220KV Gopal Pur, 20:59Hrs. 2) Name of element tripped/restored: 220KV Sabji Mandi-I put off manually on emergency basis on request of DM(T), Gopal Pur 3) Relay Annunciation: Control Cable of RYB Phase of 220KV CTs theft 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: Load taken on 220KV Sabji Mandi-II 6) Any other relevant information: 100MVA-I along with 33KV I/C-I put off manually on emergency basis and CB not closed of 220KV Bus-Sectio at 220KV Sabji Mandi (as reported by operation staff of 220KV Sabji Mandi). Regards, Delhi SLDC 20240421204532 2024/04/21 20:45:33 1) Name of the substation and Time: 220KV BTPS, 19:35Hrs. 2) Name of element tripped/restored: 220KV Alwar Mia restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240421185518 2024/04/21 18:55:24 1) Name of the substation and Time: 220KV BTPS, 16:34Hrs. 2) Name of element tripped/restored: 220KV Alwar Mia 3) Relay Annunciation: General Trip, Zone-1, Y-Phase, Y2-N, Fault Location - 8.23Km and Fault Current, Y-Phase - 14KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: No load effected, informed to NRLDC 6) Any other relevant information: Nil Regards, Delhi SLDC 20240420003644 2024/04/20 00:36:44 1) Name of the substation and Time: 220KV BTPS S/stn. 2) Name of element tripped/restored: 220KV Sarita Vihar Ckt-II, trip @ 22:21 Hrs. 3) Relay Annunciation: Ckt Trip w/o relay, w/o alarm and w/o indication. Note: Only time was shown in REL-670 Relay which is Distance relay. 4) Details of physically damaged equipment: --- 5) Immediate corrective/system normalization steps performed: Information passed to concerned Mgr(T) and DM(T) through BTPS operator. 6) Any other relevant information: Only single circuit handlling total SVR substation Load. Regards, Delhi SLDC 20240419100539 2024/04/19 10:05:45 1) Name of the substation and Time: 220 kv park street @10.00 2) Name of element tripped/restored: 33 kv i/c -4 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240419080150 2024/04/19 08:01:56 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: At 07:13Hrs 33KV I/C-3, 33KV I/C-4 and 100MVA T/F-4 tripped. Grid staff reported electrocution of monkey. Load affected was 66MW. At 07:47Hrs 33KV I/C-3 and 33KV B/C charged and load normalised. 3) Relay Annunciation: Relay on 33KV I/C-3 are O/C R-phase E/F. Relay on 33KV I/C-4 are O/C B-phase E/F. Relay on 100MVA T/F-4 are O/C B-phase REF. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240419071411 2024/04/19 07:14:17 1) Name of the substation and Time: Shalimar Bagh 2) Name of element tripped/restored: At 02:10Hrs 100MVA 220/33KV T/F-3 tripped on differential RYB-phase LV REF. Load affected was 36MW. At 02:26Hrs 33KV B/C closed and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240418195707 2024/04/18 19:57:12 1) Name of the substation and Time: Najafgarh 2) Name of element tripped/restored: At 17:39Hrs 160MVA T/F-2 and 100MVA T/F-4 charged. At 17:42Hrs 220KV Bamnauli ckt-II charged. At 18:49Hrs 220KV Kanjhawala ckt charged at no load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240418162603 2024/04/18 16:26:08 1) Name of the substation and Time: At Najafgarh(15:26)hrs. 2) Name of element tripped/restored: 220KV B/C, 160MVA-II, 100MVA-IV. 3) Relay Annunciation: tripped on 96. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 66KV B/C put ON. 6) Any other relevant information: none. Regards, Delhi SLDC 20240418151615 2024/04/18 15:16:15 1) Name of the substation and Time: At Najafgarh(12:06)hrs 2) Name of element tripped/restored: 220KV Bamnoli ckt-II. 3) Relay Annunciation: 186, 86 A and B. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Najafgarh. 6) Any other relevant information: none. Regards, Delhi SLDC 20240417170039 2024/04/17 17:00:40 1) Name of the substation and Time: 220KV BTPS substation 2) Name of element tripped/restored: 220KV Sarita Vihar Ckt-11 @ 15:40 Hrs. 3) Relay Annunciation: -- 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: -- 6) Any other relevant information: -- Regards, Delhi SLDC 20240417153524 2024/04/17 15:35:30 1) Name of the substation and Time: At BTPS(13:17)hrs 2) Name of element tripped/restored: 220KV Sarita Vihar ckt-II 3) Relay Annunciation: tripped W/I. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: none. 6) Any other relevant information: CVT available at BTPS end. Regards, Delhi SLDC 20240416215132 2024/04/16 21:51:33 1) Name of the substation and Time: 220KV Sarita Vihar, 21:37Hrs. 2) Name of element tripped/restored: 100MVA-III along with 66KV I/C-III charged 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240416182514 2024/04/16 18:25:20 1) Name of the substation and Time: 220KV RPH, 18:10Hrs. 2) Name of element tripped/restored: 33KV I/C-I and 33KV Bus-Coupler restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240416140019 2024/04/16 14:00:25 1) Name of the substation and Time: 220 KV kashmari Gate -12:39 Hrs 2) Name of element tripped/restored: 220 KV Wazirabad ckt-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 KV Wazirabad ckt-II Charged at 13:49 Hrs Regards, Delhi SLDC 20240416130153 2024/04/16 13:02:20 1) Name of the substation and Time: 220kV Kashmiri Gate at 12:39 Hrs 2) Name of element tripped/restored: 220kV Wazirabad Ckt-II 3) Relay Annunciation: Line differential A, B,C , auto-reclose A, B , Three phase relay 186X at Kashmiri Gate s/stn. R, Y Phase Trip, zone 1 Trip, Auto-reclose A, B,C Fault current Ia,16.52 kAmp, Ib-16.36 kAmp, Ic-205 Amp, In-79.46 Amp Distance-1.629 KM at Wazirabad S/stn 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load affected-95 MW Approx. System normalise through 220kV Bus coupler at 12:45 Hrs Regards, Delhi SLDC 20240416052919 2024/04/16 05:29:20 1) Name of the substation and Time: 220kV Rajghat @04:00Hrs 2) Name of element tripped/restored: 33kV Incomer-II charged. 3) Relay Annunciation: ......... 4) Details of physically damaged equipment: ......... 5) Immediate corrective/system normalization steps performed: ......... 6) Any other relevant information: I/c-1 remained for charging. Regards, Delhi SLDC 20240416033136 2024/04/16 03:31:42 1) Name of the substation and Time: 220kV Rajghat @2:42 Hrs 2) Name of element tripped/restored: 33KV Incomer 1 and 2 tripped. O/C, E/F relay on both. Monkey jumped and ran away reported on 33kV Incomer-1 3) Relay Annunciation: O/C, E/F on both I/C 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Throughly Yard inspection. Load shifted by Discom. 6) Any other relevant information: 11MW Load each was running on incomer 1 and 2 repectively. Regards, Delhi SLDC 20240414172230 2024/04/14 17:22:35 1) Name of the substation and Time: Bawana 2) Name of element tripped/restored: At 15:30Hrs CB-1352 of 400KV Deepalpur ckt charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240414171534 2024/04/14 17:15:34 1) Name of the substation and Time: BTPS 2) Name of element tripped/restored: AT 14:15Hrs 220KV Alwar ckt charged at no load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240414131918 2024/04/14 13:19:24 1) Name of the substation and Time: PPK-1 2) Name of element tripped/restored: 220KV Bamnauli ckt-II charged at 11:23Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240414131735 2024/04/14 13:17:36 1) Name of the substation and Time: BTPS 2) Name of element tripped/restored: At 13:03Hrs 220KV Alwar ckt tripped on R-phase Z-1. Circuit was at no load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240414131607 2024/04/14 13:16:08 1) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: At 13:03Hrs 100MVA T/F-3 tripped on HV REF. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240414124516 2024/04/14 12:45:16 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 10:40Hrs 220KV Mandaula ckt-II tripped on R-phase differential inter tripping. CVT was coming at Narela end. No load was affected. At 12:03Hrs 220KV Mandaula ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240414020102 2024/04/14 02:01:02 1) Name of the substation and Time: 400kV Bawana 2) Name of element tripped/restored: 400kV Deepalur Ckt 3) Relay Annunciation: 400kv Main Bay 413 CB (1352) Pole discrepancy C phase at 400kV Bawana End. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240413235727 2024/04/13 23:57:29 1) Name of the substation and Time: 220kV PPK-I at 23:22 Hrs 2) Name of element tripped/restored: 220kV Bamnauli Ckt-II 3) Relay Annunciation: Zone-1, R and B phase, 86 T, 86 a,B,C Relay operatedIa-15.21 kAmp, In-15.10 kAmp Distance-12.41 kM at Bamnauli End. Manually 220kV CB put off at PPK-I end. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load affected 74 MW. System normalise through 220kV Bus coupler at 23:40 Hrs Regards, Delhi SLDC 20240413202436 2024/04/13 20:24:42 1) Name of the substation and Time: 220kV Sarita Vihar 2) Name of element tripped/restored: 220kV Maharani Bagh Ckt restored at 20:20 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240413201247 2024/04/13 20:12:53 1) Name of the substation and Time: 220kV Sarita Vihar at 20:02 Hrs 2) Name of element tripped/restored: 220kV Maharani Bagh Ckt 3) Relay Annunciation: CB Air Pressure Low, Pole Discripancy(PD) B Phase. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240413181216 2024/04/13 18:12:17 1) Name of the substation and Time: 220kV Okhla @ 18:00Hrs 2) Name of element tripped/restored: 33kV Incomer-V restored which was tripped with 33kV TGK-1 feeder. 3) Relay Annunciation: ............. 4) Details of physically damaged equipment: .............. 5) Immediate corrective/system normalization steps performed: ............ 6) Any other relevant information: .............. Regards, Delhi SLDC 20240413083020 2024/04/13 08:30:21 1) Name of the substation and Time: 220kV Gopal Pur,20:57 Hrs 2) Name of element tripped/restored: 220kV Mandola Ckt-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220kV Mandola Ckt-II has been charged at 20:57 Hrs on 12.04.2024 Regards, Delhi SLDC 20240412090946 2024/04/12 09:09:52 1) Name of the substation and Time: 220KV Pragati 2) Name of element tripped/restored: 220KV Pragati to M.Bagh Ckt Restored @ 09:04Hrs(12.04.24) 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240411230240 2024/04/11 23:02:45 1) Name of the substation and Time: At Pragati(18:05)hrs. 2) Name of element tripped/restored: 220KV Maharani bagh ckt. 3) Relay Annunciation: Problem in CB. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: ckt still in outage due to CB problem, however the snapped jumper has been attended. Regards, Delhi SLDC 20240411123335 2024/04/11 12:33:41 1) Name of the substation and Time: 220KV Pragati, 11:51Hrs. 2) Name of element tripped/restored: 220KV Maharani Bagh tripped at Pragati only 3) Relay Annunciation: 186 4) Details of physically damaged equipment: B-Phase jumper snapped from cable end bushing at 220KV Maharani Bagh 5) Immediate corrective/system normalization steps performed: Circuits are already parallel 6) Any other relevant information: No tripping at Maharani Bagh end Regards, Delhi SLDC 20240410074358 2024/04/10 07:43:59 1) Name of the substation and Time: 220 KV Okhla:- 07:38 Hrs 2) Name of element tripped/restored: 220/33KV 100 MVA Ptrx-V along with 33 KV I/C-V Charged at 07:38 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220/33KV 100 MVA Ptrx-V along with 33 KV I/C-V Charged at 07:38 Hrs Regards, Delhi SLDC 20240410071652 2024/04/10 07:16:57 1) Name of the substation and Time: 220kV Okhla at 06:51 Hrs 2) Name of element tripped/restored: 100MVA , 220/33kV Pr Trf no-V alongwith 33kV I/C-V 3) Relay Annunciation: Differential R and Y phase relay operated, 186 A,186 B relay operated 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: system normalised through Bus coupler at 06:57 Hrs 6) Any other relevant information: Load affected approx.18 MW, Due to monkey climbed on Y phase Quard conductor 33kV incomer side. Regards, Delhi SLDC 20240409111414 2024/04/09 11:14:20 1) Name of the substation and Time: 220KV DSIIDC Bawan 2) Name of element tripped/restored: 220KV Bawan-1 at 10:07Hrs. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Circuit charged at 10:07Hrs 6) Any other relevant information: Load Normalised Regards, Delhi SLDC 20240409083042 2024/04/09 08:30:48 1) Name of the substation and Time: 220KV DSIDC Bawana, 07:54Hrs. 2) Name of element tripped/restored: 220KV Bawana-I tripped 3) Relay Annunciation: Y-Phase, 86 and SF6 Gas Lockout at DSIDC Bawana end and RYB Phase, Distance Trip and Zone-1 at Bawana end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Bus-Coupler charged at 07:55Hrs. and supply restored 6) Any other relevant information: 220KV Narela-I charged and 220KV Bus-Coupler put off at 07:56Hrs. Regards, Delhi SLDC 20240409083022 2024/04/09 08:30:23 1) Name of the substation and Time: 220KV DSIDC Bawana, 07:54Hrs. 2) Name of element tripped/restored: 220KV Bawana-I tripped 3) Relay Annunciation: Y-Phase, 86 and SF6 Gas Lockout at DSIDC Bawana end and RYB Phase, Distance Trip and Zone-1 at Bawana end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Bus-Coupler charged at 07:55Hrs. and supply restored 6) Any other relevant information: 220KV Narela-I charged and 220KV Bus-Coupler put off at 07:56Hrs. Regards, Delhi SLDC 20240409051703 2024/04/09 05:17:08 1) Name of the substation and Time: 220KV Gopal Pur, 05:02Hrs. 2) Name of element tripped/restored: 220KV Sabji Mandi-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240409051525 2024/04/09 05:15:26 1) Name of the substation and Time: 220KV Gopal Pur, 04:25Hrs. 2) Name of element tripped/restored: 220KV Sabji Mandi-II tripped 3) Relay Annunciation: No indication 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to DISCOM for shifting the load. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240409001409 2024/04/09 00:14:15 1) Name of the substation and Time: 220KV Kanjhawala, 23:33Hrs. 2) Name of element tripped/restored: 100MVA-II tripped 3) Relay Annunciation: 86 and Low Air Pressure 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 66KV I/C-I and II are already parallel 6) Any other relevant information: 66KV I/C-II not tripped Regards, Delhi SLDC 20240408083615 2024/04/08 08:36:16 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: At 07:26Hrs 100MVA 220/33KV T/F-II and 33KV I/C-I and 33KV I/C-II tripped. Grid staff reported electrocution of monkey. Load affected was 62MW. 3) Relay Annunciation: Relay on 100MVA T/F-II are O/C B-phase. Relay on 33KV I/C-I and 33KV I/C-II are O/C YB-phase. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: At 08:10Hrs 100MVA T/F-II charged. At 08:12Hrs 33KV I/C-I and 33KV I/C-II charged. 6) Any other relevant information: na Regards, Delhi SLDC 20240405183226 2024/04/05 18:32:27 1) Name of the substation and Time: 220KV Dev Nagar, 18:27Hrs. 2) Name of element tripped/restored: 33KV I/C-IV restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240405182416 2024/04/05 18:24:22 1) Name of the substation and Time: 220KV Dev Nagar, 18:13Hrs. 2) Name of element tripped/restored: 100MVA-IV restored, but 33KV I/C-IV not restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240405181735 2024/04/05 18:17:41 1) Name of the substation and Time: 220KV Dev Nagar, 17:43Hrs. 2) Name of element tripped/restored: 100MVA-IV along with 33KV I/C-IV tripped 3) Relay Annunciation: 86 on 100MVA-IV and 33KV I/C-IV 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Instruction given to DISCOM for shifting the load. 6) Any other relevant information: 33KV Bus-Coupler is not in healthy condition. Regards, Delhi SLDC 20240404123933 2024/04/04 12:39:39 1) Name of the substation and Time: 220KV Wazirpur, 12:33Hrs. 2) Name of element tripped/restored: 100MVA-II charged 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240404122459 2024/04/04 12:25:04 1) Name of the substation and Time: 220KV Wazirpur, 12:10Hrs. 2) Name of element tripped/restored: 100MVA-II 3) Relay Annunciation: HVREF and OTI 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 33KV Bus-Coupler charged by NDPL at 12:12Hrs. and supply restored 6) Any other relevant information: Nil Regards, Delhi SLDC 20240404095718 2024/04/04 09:57:19 1) Name of the substation and Time: At Gopalpur(09:03)hrs 2) Name of element tripped/restored: 220KV Mandola-II tripped at Mandola end. and 220KV Subzimandi ckt-II B phase common jumper snapped. 3) Relay Annunciation: At Mandola-II: B phase ground, 22.6KM.(No tripping at Gopalpur end) B phase common jumper of 220KV Subzimandi-II snapped, but circuit did not trip at Gopalpur end. 4) Details of physically damaged equipment: 220KV B phase common jumper of Subzimandi-II snapped at Gopalpur. 5) Immediate corrective/system normalization steps performed: 220KV Subzimandi-II tripped manually and 220KV SOW-I put ON at Gopalpur. 6) Any other relevant information: Supply of 220KV Timarpur also affected. Regards, Delhi SLDC 20240403192558 2024/04/03 19:26:03 1) Name of the substation and Time: 220KV VKJ 2) Name of element tripped/restored: 220KV MLI-1 , charged @ 19:20Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: circuit is charged with instruction of concerned incharge 6) Any other relevant information: - Regards, Delhi SLDC 20240403192237 2024/04/03 19:22:42 1) Name of the substation and Time: 220KV VKJ S/stn. and 19:00Hrs. 2) Name of element tripped/restored: 220KV MLI CKT-I 3) Relay Annunciation: Any trip, O/C ST-1,O/C Y-phase, 186A, 186B 4) Details of physically damaged equipment: No phiysical damage report by VKJ operater 5) Immediate corrective/system normalization steps performed: Said to VKJ operator to inform the tripping higher officials 6) Any other relevant information: At 19:01Hrs Load normalised through B/C Regards, Delhi SLDC 20240403100006 2024/04/03 10:00:33 1) Name of the substation and Time: Vasant Kunj 2) Name of element tripped/restored: At 09:51Hrs 220KV Mehrauli ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240403084137 2024/04/03 08:41:37 1) Name of the substation and Time: Vasant Kunj 2) Name of element tripped/restored: At 05:25Hrs 220KV Mehrauli ckt-I tripped on O/C Y-phase. CVT coming at Vasant Kunj end. Load affected was 16MW. At 05:45Hrs load normalised through 220KV RK Puram ckt-I. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240401072943 2024/04/01 07:29:49 1) Name of the substation and Time: 220 kV gopalpur @07.14 2) Name of element tripped/restored: 220 kv mandola ckt-ii 3) Relay Annunciation: Z1,y and b ph,4.658 km if=5.274 kA 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: load taken on sow ckt-2 6) Any other relevant information: na Regards, Delhi SLDC 20240331162919 2024/03/31 16:29:20 1) Name of the substation and Time: 220kV Dev Nagar, 16:24 Hrs 2) Name of element tripped/restored: New 33kV O/G Tibia collage 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 16:24 Hrs, New 33kV O/G Tibia collage has been charged systematically Regards, Delhi SLDC 20240331155039 2024/03/31 15:50:45 1) Name of the substation and Time: 220kV Timar Pur, 15:40 Hrs 2) Name of element tripped/restored: New 220/33/11 kV, 100 MVA Tx-III ( Bay no. 209) 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: New 100 MVA Tx-III, TAL make,Sr. No. SP-1211-5, YOM-2022 has been charged on no load systematically at 15: 40 Hrs Regards, Delhi SLDC 20240330220247 2024/03/30 22:02:53 1) Name of the substation and Time: Timarpur 2) Name of element tripped/restored: At 20:08Hrs 220/33KV GIS Timarpur grid energised(220KV Bus-I and II, 220KV B/C and 220KV Bus PT) by T-off from 220KV Gopalpur-Sabzi Mandi ckt-II. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240329131511 2024/03/29 13:15:39 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 12:51Hrs 220KV Geeta Colony ckt-II tripped. No load was affected. 3) Relay Annunciation: Relay at Patparganj end are B-phase Z-1 3.7km If=3.2KA. Relay at Geeta Colony end are Z-1 B-phase 1.47km If=13.28KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240329090140 2024/03/29 09:01:46 1) Name of the substation and Time: 220KV Geeta Colony, 08:56Hrs. 2) Name of element tripped/restored: 220KV PPG-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240329085901 2024/03/29 08:59:02 1) Name of the substation and Time: 220KV Geeta Colony, 08:44Hrs. 2) Name of element tripped/restored: 220KV PPG-I tripped 3) Relay Annunciation: Pole Discripancy 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuits are already parallel 6) Any other relevant information: Nil Regards, Delhi SLDC 20240328175940 2024/03/28 17:59:40 1) Name of the substation and Time: 220Kv BTPS @17.55 2) Name of element tripped/restored: 220 KV BTPS-TUGLAJKABAD CKT-II 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240328160131 2024/03/28 16:01:37 1) Name of the substation and Time: 220kV BTPS @ 15:50Hrs 2) Name of element tripped/restored: 220kV TGK=II tripped. A and B ph fault, Ia= 10.12kA, Ib = 10.25kA, 3.288kM 3) Relay Annunciation: ----------- 4) Details of physically damaged equipment: ----------- 5) Immediate corrective/system normalization steps performed: Line clearance sought. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20240326081545 2024/03/26 08:15:50 1) Name of the substation and Time: 220kV PPGJ @ 07:11Hrs 2) Name of element tripped/restored: 220kV IP 2 Trip, E/F, ST-1, 186, Any Trip. Previously @ 07:08 Hrs, 220kV IP-1 has been restored. 3) Relay Annunciation: .............. 4) Details of physically damaged equipment: ...................... 5) Immediate corrective/system normalization steps performed: ................ 6) Any other relevant information: ................. Regards, Delhi SLDC 20240326064850 2024/03/26 06:48:56 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 06:24Hrs 220KV IP ckt-I tripped on E/F. No load was affected and CVT was coming at Patparganj end. At 06:41Hrs 220KV Patparganj-IP ckt-I charged. At 06:44Hrs 220KV IP ckt-I tripped on E/F. No load was affected and CVT coming at Patparganj end. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240325132841 2024/03/25 13:28:47 1) Name of the substation and Time: 220KV patparganj 2) Name of element tripped/restored: 220KV PPG to IP Ckt- I @ 13:10Hrs. and II @ 13:17Hrs. 3) Relay Annunciation: - 4) Details of physically damaged equipment: No equipment physically damaged 5) Immediate corrective/system normalization steps performed: Petrolling done thenafter both the circuits are charged 6) Any other relevant information: system normal Regards, Delhi SLDC 20240325124627 2024/03/25 12:46:32 1) Name of the substation and Time: 220KV patparganj @ 11:48Hrs. 2) Name of element tripped/restored: 220KV PPG to IP Ckt- I and II 3) Relay Annunciation: Relays on IP-1 = Any Trip, E/F Stage-I and 186 Relays on IP-II = 86, 186, R,Y-Phase, Dist Zone-1, A/R Lockout, Dist=684.4 Mtrs. 4) Details of physically damaged equipment: As per PPG operator no physical damaged observed in yard 5) Immediate corrective/system normalization steps performed: Affected load were normalised @ 12:00Hrs and informed to concerned officials to do proper petrolling at their respective ends through grid operators 6) Any other relevant information: Load affected for some time on following stations do to IP-1 and IP-2 trip. 01. 220KV PKS 02. 220KV Rajghat 03. 220KV IP Regards, Delhi SLDC 20240325124550 2024/03/25 12:46:17 1) Name of the substation and Time: 220KV patparganj @ 11:48Hrs. 2) Name of element tripped/restored: 220KV PPG to IP Ckt- I and II 3) Relay Annunciation: Relays on IP-1 = Any Trip, E/F Stage-I and 186 Relays on IP-II = 86, 186, R,Y-Phase, Dist Zone-1, A/R Lockout, Dist=684.4 Mtrs. 4) Details of physically damaged equipment: As per PPG operator no physical damaged observed in yard 5) Immediate corrective/system normalization steps performed: Affected load were normalised @ 12:00Hrs and informed to concerned officials to do proper petrolling at their respective ends through grid operators 6) Any other relevant information: Load affected for some time on following stations do to IP-1 and IP-2 trip. 01. 220KV PKS 02. 220KV Rajghat 03. 220KV IP Regards, Delhi SLDC 20240324175822 2024/03/24 17:58:22 1) Name of the substation and Time: 220 KV Naraina at 01:26 Hrs Dt 22.03.2024 2) Name of element tripped/restored: 100 MVA Ptx-II Charged on NO load at 17:47 Hrs dt 24.03.2024 3) Relay Annunciation: - 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 100 MVA Ptx-II Charged on NO load at 17:47 Hrs dt 24.03.2024 Regards, Delhi SLDC 20240322063955 2024/03/22 06:40:00 1) Name of the substation and Time: 220 KV Masjid Moth At 06:10 Hrs 2) Name of element tripped/restored: 220/33 KV 100 MVA Tr 3 alongwith 33 KV I/C 3 3) Relay Annunciation: 86 LV REF 86 T1 86 T2 4) Details of physically damaged equipment: NO 5) Immediate corrective/system normalization steps performed: 33 KV B/C made ON to normalize supply 6) Any other relevant information: 33 KV Court Complex 1 supply affected for some time Regards, Delhi SLDC 20240322052112 2024/03/22 05:21:39 1) Name of the substation and Time: 220KV Naraina substation @ 04:27Hrs. 2) Name of element tripped/restored: 33KV I/C of 220/33KV 100MVA Tr-1 charged on 33KV Bus-I and 04:27Hrs. 3) Relay Annunciation: - 4) Details of physically damaged equipment: Y-phase cable terminal box of 33KV Bus-II Damaged. 5) Immediate corrective/system normalization steps performed: All 33KV Feeders are shifted to Bus-I 6) Any other relevant information: 220/33KV 100MVA-II and 33KV Bus-II still in Break down Regards, Delhi SLDC 20240322020337 2024/03/22 02:03:43 1) Name of the substation and Time: 220KV Narina substation and 01:26Hrs. 2) Name of element tripped/restored: 100MVA Incomer-01 and 100MVA Transformer No-2 with I/c-2 3) Relay Annunciation: Any trip, O/c Stage-01, O/C Y-Phase, E/f, 86 4) Details of physically damaged equipment: not observed 5) Immediate corrective/system normalization steps performed: informed to concerned grid officials 6) Any other relevant information: Load affected = 35MW Regards, Delhi SLDC 20240321111825 2024/03/21 11:18:26 1) Name of the substation and Time: Naraina 2) Name of element tripped/restored: At 10:57Hrs 100MVA T/F-3 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240321015042 2024/03/21 01:50:48 1) Name of the substation and Time: 220 kv naraina @01.026 2) Name of element tripped/restored: 100 mva tr-3 3) Relay Annunciation: 86,overflux 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240320113308 2024/03/20 11:33:14 1) Name of the substation and Time: Dial 2) Name of element tripped/restored: At 09:50Hrs while arranging shutdown of 220KV Mehrauli-Dial ckt-II, approx. 12MW load was affected for 1 minute during the changeover of 220KV circuits by grid staff of Dial. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240319142157 2024/03/19 14:21:58 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) 220 kv SCADA Telephone not working 220 kv narela 220 kv knjhawala 220 kv Naraina 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20240319142006 2024/03/19 14:20:12 1) Name of the substation and Time: scada phone not working 220 kv knjhawala 220 kv naraina 220 kv NARELA 2) Name of element tripped/restored: NA 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240316190137 2024/03/16 19:01:42 1) Name of the substation and Time: 220kV Park Street, 16:42 Hrs 2) Name of element tripped/restored: 33kV I/C-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: System is normal at 18:42 Hrs 6) Any other relevant information: - Regards, Delhi SLDC 20240316190109 2024/03/16 19:01:36 1) Name of the substation and Time: 220kV Park Street, 16:42 Hrs 2) Name of element tripped/restored: 33kV I/C-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: System is normal at 18:42 Hrs 6) Any other relevant information: - Regards, Delhi SLDC 20240316171637 2024/03/16 17:16:59 1) Name of the substation and Time: At Park street(16:42hrs) 2) Name of element tripped/restored: 33KV I/C-I . 3) Relay Annunciation: tripped on 30G, O/C ST-1,Bphase, E/F. 4) Details of physically damaged equipment: Y and B phase Ct of 33KV Motia Khan ckt-I flashed. 5) Immediate corrective/system normalization steps performed: 33KV B/c put on and load normalized. 6) Any other relevant information: none. Regards, Delhi SLDC 20240316001515 2024/03/16 00:15:16 1) Name of the substation and Time: 220KV Masjid Moth, 00:10Hrs. 2) Name of element tripped/restored: 33KV Court Complex-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240315232611 2024/03/15 23:26:17 1) Name of the substation and Time: 220kV Masjid Mod, 23:20Hrs 2) Name of element tripped/restored: 100MVA Tr-1 with 33kV I/cmr charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20240315232605 2024/03/15 23:26:10 1) Name of the substation and Time: 220kV Masjid Mod, 23:20Hrs 2) Name of element tripped/restored: 100MVA Tr-1 with 33kV I/cmr charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20240315231358 2024/03/15 23:13:59 1) Name of the substation and Time: 220kKV MAsjhid Mod, 23:05Hrs 2) Name of element tripped/restored: 100MVA -2 along with I/cmr chargesd 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: 33kV BUs coupler off at 23:10Hrs Regards, Delhi SLDC 20240315222318 2024/03/15 22:23:44 1) Name of the substation and Time: 220KV Masjid Moth, 22:10Hrs. 2) Name of element tripped/restored: 33KV I/C-III restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 33KV Bus-Coupler charged at 22:15Hrs. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240315214827 2024/03/15 21:48:53 1) Name of the substation and Time: 220kV Masjid Mod, 21:20HRs 2) Name of element tripped/restored: 100MVA Tr-1 with incomer, 100MVA Tr-2 with incomer and 33kV Court Complex-II. 3) Relay Annunciation: 100MVA Tr-1: Differential, Over flux, 86, TC-II 100MVA Tr-2: Differential, 86 33 Court coplex-II: Directional Over current, E/F, 86 33kV I/Cmr 1,2 and 3: 86 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Maintenance staff is intimated to provide clearance to charge the Transformers at earliest 6) Any other relevant information: Nil Regards, Delhi SLDC 20240313141157 2024/03/13 14:11:57 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: At 13:56Hrs 220KV Mandaula ckt-II tripped on Z-1 8.01km. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240312122401 2024/03/12 12:24:07 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: At 10:22Hrs 33KV I/C-I charged and at 11:00Hrs 100MVA 220/33KV T/F-2 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240312073753 2024/03/12 07:37:59 1) Name of the substation and Time: 220kV Parkstreet at 06:40 Hrs 2) Name of element tripped/restored: 1. 100MVA, 220/33kV Pr Trf no-II alongwith 33kV I/C no-II 2. 33kV I/C no-I Due to Monkey electroculated on 33kV Bus 3) Relay Annunciation: 1. Any trip , O/C HTI, O/C B Phase, 86 B operated, 80 DC1 on 100MVA, 220/33kV Pr Trf no-II alongwith 33kV I/C no-II. 2. Any Trip O/C R phase , O/C HTI, E/F FTI , 86 operated on 33kV I/C no-I 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: To shift the load at BSES end 6) Any other relevant information: Load affected 22 MW Approx. Regards, Delhi SLDC 20240309142732 2024/03/09 14:27:32 1) Name of the substation and Time: At Mehrauli(14:00 hrs) 2) Name of element tripped/restored: 220KV DIAL ckt-I 3) Relay Annunciation: z-1, D/P, 6.9KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV Bamnoli-I put ON at DIAL. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20240308180729 2024/03/08 18:07:30 1) Name of the substation and Time: 220 KV Park street at 17:13 Hrs 2) Name of element tripped/restored: 100 MVA,220/33KV Pr trf NO-1 charge at 17:13 Hrs on NO load 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: -- 6) Any other relevant information: - Regards, Delhi SLDC 20240308072754 2024/03/08 07:27:55 1) Name of the substation and Time: 220KV Park Street, 02:19Hrs. 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I tripped 3) Relay Annunciation: RYB Phase, LVREF Trip, 86, 86A, 86B, 86D, 195A, 195B, 195C and 195CC on 100MVA-I and 86 on 33KV I/C-I 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 33KV Bus-Coupler charged at 02:25Hrs. and supply restored 6) Any other relevant information: SMS Portal not working at tripping time. So, message could not be sent at tripping time. Regards, Delhi SLDC 20240307184939 2024/03/07 18:49:46 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) It is to inform that the Internet is not working since half an hour, so that we neither able to punch the revision nor able to provide the Schedule. Kindly rectify the same at the earliest. 2) NA 3) NA 4) NA 5) NA 6) NA Regards, Delhi SLDC 20240304184256 2024/03/04 18:43:18 1) Name of the substation and Time: 220 kV [email protected] 2) Name of element tripped/restored: 220 KV ppg -ckt-2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240304182524 2024/03/04 18:25:46 1) Name of the substation and Time: 220 kv ip station @17.05 2) Name of element tripped/restored: 220 KV PPG -2 3) Relay Annunciation: Z1,B PH,86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240304064146 2024/03/04 06:41:46 1) Name of the substation and Time: 220kN T/ Centre, 17:17 2) Name of element tripped/restored: 100 MVA-II with It I/C-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 03:17 dt. 04.03.2024 Hrs Charged and taken the load 6) Any other relevant information: - Regards, Delhi SLDC 20240303175041 2024/03/03 17:50:42 1) Name of the substation and Time: 220kV Trauma Centre at 17:17 Hrs 2) Name of element tripped/restored: 100MVA , 220/33kV Power Transformer no-II alongwith 33kV I/C-II 3) Relay Annunciation: REF, Differential A, B,C 86 A,B 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected as 33kV Buscoupler already in closed position. Regards, Delhi SLDC 20240303093226 2024/03/03 09:32:27 1) Name of the substation and Time: At Geeta Colony(06:59)hrs 2) Name of element tripped/restored: 220KV SOW ckt-II 3) Relay Annunciation: C-N trip, D/P. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240303013008 2024/03/03 01:30:09 1) Name of the substation and Time: 220KV Geeta colony and 01:00hrs 2) Name of element tripped/restored: 220 Geeta colony to South of Wazirabad Ckt-II. 3) Relay Annunciation: 27RYB,86ABC,Trip Phase ABC (Main-1), B-Phase Trip (Main-2), Distance Trip, Zone-1, Auto reclose Operated, Auto reclose Lockout, Trip Phase C-N, fault location=2.213KM. 4) Details of physically damaged equipment: Not observed 5) Immediate corrective/system normalization steps performed: information passed to concerned officials by grid operators 6) Any other relevant information: IA=1.009KA, IB=220.9A, IC=13.48KA Regards, Delhi SLDC 20240302223823 2024/03/02 22:38:28 1) Name of the substation and Time: At Mehrauli(20:10)hrs 2) Name of element tripped/restored: 220KV Tughlakabad ckt-II. 3) Relay Annunciation: RYB phase, Rphase trip. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240302184330 2024/03/02 18:43:52 1) Name of the substation and Time: At Mehrauli(18:22)hrs 2) Name of element tripped/restored: 220KV Tughlakabad ckt-II. 3) Relay Annunciation: differential protection ,R phase trip, 11KM from Tughlakabad. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other paralell line. 6) Any other relevant information: Line tripped from both ends. Regards, Delhi SLDC 20240302174534 2024/03/02 17:45:34 1) Name of the substation and Time: 220KV Sarita Vihar, 17:40Hrs. 2) Name of element tripped/restored: 220KV Pragati restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240302172134 2024/03/02 17:21:34 1) Name of the substation and Time: 220KV Sarita Vihar, 17:02Hrs. 2) Name of element tripped/restored: 220KV Pragati tripped 3) Relay Annunciation: Zone-1, 86A, 86B, 86T, 186A, 186B, 195CC, B-Phase, Fault Location - 3.907Km and Fault Current, B-Phase - 7.074KA at Sarita Vihar end and Zone-2, 86, B-Phase, Fault Location - 11.9Km and Fault Current, B-Phase - 8.03KA at Pragati end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuits are already parallel 6) Any other relevant information: Nil Regards, Delhi SLDC 20240302134126 2024/03/02 13:41:47 1) Name of the substation and Time: 220KV Shalimaar Bagh, 12:54Hrs. 2) Name of element tripped/restored: 100MVA-III along with 33KV I/C-III tripped 3) Relay Annunciation: Differential RYB Phase on 100MVA-III and 86 on 33KV I/C-III 4) Details of physically damaged equipment: B-Phase cable damaged of 33KV I/C-III 5) Immediate corrective/system normalization steps performed: Instruction given to DISCOM for shifting the load 6) Any other relevant information: 33KV Bus-Coupler charged at 13:23Hrs. (delay due to maintenance issue) and supply restored Regards, Delhi SLDC 20240228091622 2024/02/28 09:16:23 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: At 07:44Hrs 33KV I/C-II tripped on O/C R-phase E/F. Grid staff reported electrocution of monkey. Load affected was 21MW. At 08:27Hrs 33KV I/C-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240224172827 2024/02/24 17:28:28 1) Name of the substation and Time: 220 KV najafgarh @16.25 2) Name of element tripped/restored: 100 MVA TR-1 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240222131341 2024/02/22 13:13:42 1) Name of the substation and Time: At RK Puram(12:05hrs) 2) Name of element tripped/restored: 160MVA-I and II. 3) Relay Annunciation: LBB operated. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20240222131221 2024/02/22 13:12:21 1) Name of the substation and Time: At RK Puram: (11:42hrs) 2) Name of element tripped/restored: 160MVA-I and II. 3) Relay Annunciation: LBB operated. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Grid asked to restore asap, as no other major tripping reported. 6) Any other relevant information: 32MW load affected of BRPL. Regards, Delhi SLDC 20240220085312 2024/02/20 08:53:13 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: At 08:24Hrs 220KV Sabzi Mandi ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240220030035 2024/02/20 03:00:35 1) Name of the substation and Time: 220kV Gopalpur @ 2:27Hrs 2) Name of element tripped/restored: 220kV Sabji mandi Ckt-1 Tripped without indication. Manual tripped at Sabjimandi end. 3) Relay Annunciation: W/o indication 4) Details of physically damaged equipment: ............. 5) Immediate corrective/system normalization steps performed: 33kV Buscopler Put ON at Sabjimandi to normal the load. Clearance sought at Gopalpur. 6) Any other relevant information: ........... Regards, Delhi SLDC 20240219121853 2024/02/19 12:18:53 1) Name of the substation and Time: 220kV RPH, 12:05 Hrs 2) Name of element tripped/restored: 33kV I/C-I Bay-8 due to monkey electrocuted on 33kV Bus- PT 3) Relay Annunciation: O/c, E/F 4) Details of physically damaged equipment: 33kV Bus PT isolator damaged 5) Immediate corrective/system normalization steps performed: Load has been shifted to other substation by BYPL 6) Any other relevant information: Approx. load affected 10 MW Regards, Delhi SLDC 20240219121800 2024/02/19 12:18:00 1) Name of the substation and Time: 220kV RPH, 12:05 Hrs 2) Name of element tripped/restored: 33kV I/C-I Bay-8 due to monkey electrocuted on 33kV Bus- PT 3) Relay Annunciation: O/c, E/F 4) Details of physically damaged equipment: 33kV Bus PT isolator damaged 5) Immediate corrective/system normalization steps performed: Load has been shifted to other substation by BYPL 6) Any other relevant information: Approx. load affected 10 MW Regards, Delhi SLDC 20240219114108 2024/02/19 11:41:08 1) Name of the substation and Time: 220kV Narela, 11:17 Hrs 2) Name of element tripped/restored: 220kV Rohtak Road Ckt-I and II 3) Relay Annunciation: At 220kV Rohtak Road Ckt-I :- R,Y and B -Phase Trip, zone-II, 186T, Active group-I started Ph B and C, F/L- 20.26 KM, Ia-2.028A, Ib-4.68KA, Ic-4.626KA. At 220kV Rohtak Road Ckt-II :-Zone-I, 186T, Active Group-I, Started Phase B and C,ABC trip 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Approx. load affected-19 MW each and total 38 MW Regards, Delhi SLDC 20240219114045 2024/02/19 11:41:06 1) Name of the substation and Time: 220kV Narela, 11:17 Hrs 2) Name of element tripped/restored: 220kV Rohtak Road Ckt-I and II 3) Relay Annunciation: At 220kV Rohtak Road Ckt-I :- R,Y and B -Phase Trip, zone-II, 186T, Active group-I started Ph B and C, F/L- 20.26 KM, Ia-2.028A, Ib-4.68KA, Ic-4.626KA. At 220kV Rohtak Road Ckt-II :-Zone-I, 186T, Active Group-I, Started Phase B and C,ABC trip 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Approx. load affected-19 MW each and total 38 MW Regards, Delhi SLDC 20240215125455 2024/02/15 12:54:55 1) Name of the substation and Time: 220 KV Pragati @12.37 2) Name of element tripped/restored: 160MVA TR-1 3) Relay Annunciation: 86,DIFF RELAY OPTD 4) Details of physically damaged equipment: LA Flash 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20240212161921 2024/02/12 16:19:22 1) Name of the substation and Time: 220kV Sarita Vihar 2) Name of element tripped/restored: 220kV Pragati Ckt restored at 16:17 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220kV Sarita Vihar-Pragati Ckt restored at 16:17 Hrs Regards, Delhi SLDC 20240211214800 2024/02/11 21:48:00 1) Name of the substation and Time: 220kV Sarita Vihar @ 21:30Hrs (Approx) 2) Name of element tripped/restored: 220kV Pragati Tripped on 195C relay 3) Relay Annunciation: 195C 4) Details of physically damaged equipment: ....... 5) Immediate corrective/system normalization steps performed: clearance sought. 6) Any other relevant information: ........ Regards, Delhi SLDC 20240210161355 2024/02/10 16:14:16 1) Name of the substation and Time: 400kV Bawana @ 15:45 2) Name of element tripped/restored: ICT-4 charged 3) Relay Annunciation: ............ 4) Details of physically damaged equipment: .......... 5) Immediate corrective/system normalization steps performed: ......... 6) Any other relevant information: Tripping Restored Regards, Delhi SLDC 20240210153951 2024/02/10 15:40:18 1) Name of the substation and Time: Shalimar Bagh 2) Name of element tripped/restored: At 14:57Hrs 100MVA 220/33KV T/F-3 tripped without indication. Load affected was 32MW. At 15:05Hrs 33KV B/C closed and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240210121818 2024/02/10 12:18:45 1) Name of the substation and Time: Bawana 2) Name of element tripped/restored: At 10:38Hrs 315MVA ICT-4 tripped on Buchholz relay. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240209160749 2024/02/09 16:08:16 1) Name of the substation and Time: Pragati 2) Name of element tripped/restored: At 13:27Hrs 160MVA T/F-1 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240209125500 2024/02/09 12:55:06 1) Name of the substation and Time: Pragati 2) Name of element tripped/restored: At 12:21Hrs GT generation failed and 160MVA T/F-1 and 160MVA T/F-2 at Pragati end tripped on intertripping. Load affected was approx. 25MW. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240206132216 2024/02/06 13:22:17 1) Name of the substation and Time: 220KV S/stn. Narela and 10:29 Hrs. 2) Name of element tripped/restored: Mandaula Ckt-1 and 2 3) Relay Annunciation: Bus bar protection operated 4) Details of physically damaged equipment: PG clamp which is connected with Bus bar No-1 was damaged in this connection bus bar protection of Bus bar-1 operated 5) Immediate corrective/system normalization steps performed: Yes load was managed Panipat No-1,2,3 6) Any other relevant information: Work is under process by concerned grid officials Regards, Delhi SLDC 20240206124920 2024/02/06 12:49:46 1) Name of the substation and Time: 400KV CCGT Bawana At 10:12 Hrs. 2) Name of element tripped/restored: 400 KV BUS-1 and BUS-2 3) Relay Annunciation: BUS-1 R PHASE JUMPER BPI DAMAGED BUS-2 Y PHASE JUMPER SNAPPED 4) Details of physically damaged equipment: JUMPER DAMAGED 5) Immediate corrective/system normalization steps performed: LOAD TAKEN ON OTHER SOURCES LIKE 400 KV MUNDKA and 400 KV BAMNAULI 6) Any other relevant information: Generating machines GT-2,GT-4,STG-1 and 2 tripped. Approx. 400 MW Load affected for some time. NRLDC Code issued and work is in progress. Regards, Delhi SLDC 20240206120647 2024/02/06 12:06:48 1) Name of the substation and Time: test 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: test Regards, Delhi SLDC 20240206073314 2024/02/06 07:33:20 1) Name of the substation and Time: 220 KV S.O.W. at 06:32 2) Name of element tripped/restored: 220/66kv 160 MVA Ptx 3) Relay Annunciation: HV/LV REF,130AB(Buchhoz Trip),trip coil realy un healthy,active group-1 fault type intenal 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 66 KV B/C Close at 06:42 6) Any other relevant information: aprx.load effected 40 MW Regards, Delhi SLDC 20240206073308 2024/02/06 07:33:13 1) Name of the substation and Time: 220 KV S.O.W. at 06:32 2) Name of element tripped/restored: 220/66kv 160 MVA Ptx 3) Relay Annunciation: HV/LV REF,130AB(Buchhoz Trip),trip coil realy un healthy,active group-1 fault type intenal 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 66 KV B/C Close at 06:42 6) Any other relevant information: aprx.load effected 40 MW Regards, Delhi SLDC 20240204175801 2024/02/04 17:58:07 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) complete 400 kv Bawana gris s/stn dat in suspect mode real time data not updating 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20240201160937 2024/02/01 16:09:43 1) Name of the substation and Time: 220kV BTPS 2) Name of element tripped/restored: 10:50 - 220kV TGK-II charged. 10:58 -220kV SVR-II charged. 11:25- 220kV BLB-I charged. 13:14 - 220kV BLB-II charged. 13:55 - 220kV Okhla-II charged. 3) Relay Annunciation: --------- 4) Details of physically damaged equipment: --------- 5) Immediate corrective/system normalization steps performed: --------- 6) Any other relevant information: Ckts were in tripping from 21:25 Hrs, 31.01.2024. Regards, Delhi SLDC 20240201011715 2024/02/01 01:17:20 1) Name of the substation and Time: 220kV BTPS, 21:25 Hrs 2) Name of element tripped/restored: Due to heavy rain 1) 220kV TKD-I 2) 220kV TKD-II 3)220kV Balabhgargh-I and II 4) 220kV Alwer 5) 220kV Supply failed at 220kV Okhla and SVR S/Stn. 3) Relay Annunciation: 1) 220kV TKD-I tripped on 86. 2) 220kV TKD-II tripped on 86A,zone-4, Y-Ph. 3)220kV Balabhgargh-I and II tripped on 86A,zone-4, Y-Ph. 4) 220kV Alwer tripped W/O indication 4) Details of physically damaged equipment: 1) 220kV Bus-II, PT Isolator Y-Ph LA Jumper Broken. 2) 220kV B/Couper CB pole damaged at 220kV SVR (CB was already OFF position) 5) Immediate corrective/system normalization steps performed: 1) At 21:29 Hrs system normalized at 220kV Okhla S/Stn. Through 220kV TKD Ckt. 2)At 22:37 Hrs system normalized at 220kV BTPS S/Stn. Through 220kV TKD Ckt. 3) At 23:25 Hrs system normalized at 220kV SVR S/Stn. Through 220kV Pragati Ckt. 6) Any other relevant information: Approx. 200 MW load affected. Regards, Delhi SLDC 20240201004702 2024/02/01 00:47:44 1) Name of the substation and Time: ignore 2) Name of element tripped/restored: ignore 3) Relay Annunciation: ignore 4) Details of physically damaged equipment: ignore 5) Immediate corrective/system normalization steps performed: ignore 6) Any other relevant information: ignore Regards, Delhi SLDC 20240201004106 2024/02/01 00:42:40 1) Name of the substation and Time: ignore 2) Name of element tripped/restored: ignore 3) Relay Annunciation: ignore 4) Details of physically damaged equipment: ignore 5) Immediate corrective/system normalization steps performed: ignore 6) Any other relevant information: ignore Regards, Delhi SLDC 20240131230656 2024/01/31 23:07:59 1) Name of the substation and Time: Ignore 2) Name of element tripped/restored: Ignore 3) Relay Annunciation: Ignore 4) Details of physically damaged equipment: Ignore 5) Immediate corrective/system normalization steps performed: Ignore 6) Any other relevant information: Ignore Regards, Delhi SLDC 20240131212252 2024/01/31 21:23:55 1) Name of the substation and Time: 220kV MLI, 21:05 Hrs 2) Name of element tripped/restored: 220kV V. Kunj-II 3) Relay Annunciation: At 220kV MLI:-RYB-Phase, 86. At 220kV V. Kunj:- Y-Phase diff. trip, LBB Inst, 186AB 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 21:06 Hrs 220kV b/copler closed sytem normalised. 6) Any other relevant information: 38 MW load affected for one minut. Regards, Delhi SLDC 20240131212148 2024/01/31 21:22:51 1) Name of the substation and Time: 220kV MLI, 21:05 Hrs 2) Name of element tripped/restored: 220kV V. Kunj-II 3) Relay Annunciation: At 220kV MLI:-RYB-Phase, 86. At 220kV V. Kunj:- Y-Phase diff. trip, LBB Inst, 186AB 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 21:06 Hrs 220kV b/copler closed sytem normalised. 6) Any other relevant information: 38 MW load affected for one minut. Regards, Delhi SLDC 20240131063719 2024/01/31 06:38:22 1) Name of the substation and Time: At 400 kV Bawana and 03:17 Hrs 2) Name of element tripped/restored: Supply of Both 400 kV Bus fail and 400 kV Abdullapur tripped at Bawana. 400 kV Mundka 1 and 2 Tripped at Mundka, 400 kV Maharani Bagh 1 and 2 and 400 kV Deepalpur tripped at other end 3) Relay Annunciation: Abdullapur tripped on RYB Phase Zone-3 and 4. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 400 kV Mundka 1 and 2 restored and 400 kV Bus-I and II energized 6) Any other relevant information: Load of DSIIDC taken on Narela. Load of SMB and Rohini-I taken on Wazirpur and Load of Khanjawala taken on Mundka Regards, Delhi SLDC 20240131062201 2024/01/31 06:23:04 1) Name of the substation and Time: At 400 KV CCGT BAWANA At 03:17 Hrs. 2) Name of element tripped/restored: 400 kv Bhadurgarh ckts tripped and 400 Bhiwani ckt supply fail. Both 400 KV bus dead.All generation affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: supply of 400 kv Bhivani normalize by Powergrid 6) Any other relevant information: both 400 kv Bus at Bawana also dead Regards, Delhi SLDC 20240131060729 2024/01/31 06:08:32 1) Name of the substation and Time: AT 220 KV DSIDC BAWANA 06:00 hrs. 2) Name of element tripped/restored: both ckts of 220 kv Bawana restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: load normalize from 220 kv Bawana ckts 6) Any other relevant information: 100 MVA#3 still in off position Regards, Delhi SLDC 20240131060625 2024/01/31 06:07:28 1) Name of the substation and Time: AT 220 KV DSIDC BAWANA 06:00 hrs. 2) Name of element tripped/restored: both ckts of 220 kv Bawana restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: load normalize from 220 kv Bawana ckts 6) Any other relevant information: 100 MVA#3 still in off position Regards, Delhi SLDC 20240131055620 2024/01/31 05:57:24 1) Name of the substation and Time: 220 kv DSIDC BAWANA At 03:18 Hrs. 2) Name of element tripped/restored: Supply of 220 kv Bawana ckts fail from 400 kv Bawana 3) Relay Annunciation: No tripping at 200 kv DSIDC Bawana 4) Details of physically damaged equipment: fire also reported in yard so 100 MVA Transformer#3 made off manually 5) Immediate corrective/system normalization steps performed: At 03:25 Hrs. load taken at 220 kv Narela ckts 6) Any other relevant information: Approx. 40 MW load affected for 07 Min Regards, Delhi SLDC 20240131055516 2024/01/31 05:56:19 1) Name of the substation and Time: 220 kv DSIDC BAWANA At 03:18 Hrs. 2) Name of element tripped/restored: Supply of 220 kv Bawana ckts fail from 400 kv Bawana 3) Relay Annunciation: No tripping at 200 kv DSIDC Bawana 4) Details of physically damaged equipment: fire also reported in yard so 100 MVA Transformer#3 made off manually 5) Immediate corrective/system normalization steps performed: At 03:25 Hrs. load taken at 220 kv Narela ckts 6) Any other relevant information: Approx. 40 MW load affected for 07 Min Regards, Delhi SLDC 20240130091134 2024/01/30 09:12:38 1) Name of the substation and Time: CCGT Bawana @ 08:46 Hrs 2) Name of element tripped/restored: 400kV Bahadurgarh line tripped 3) Relay Annunciation: B -Ph. Zone-1, Dist - 2.7kM 4) Details of physically damaged equipment: ------------- 5) Immediate corrective/system normalization steps performed: Follow-up with NRLDC 6) Any other relevant information: ------------ Regards, Delhi SLDC 20240128210417 2024/01/28 21:04:44 1) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: At 20:55Hrs 220KV BTPS ckt-II tripped on low air pressure. No load was affected. CVT was coming at Sarita Vihar end. At 20:58Hrs 220KV BTPS ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240128123215 2024/01/28 12:32:21 1) Name of the substation and Time: At Gopalpur(10:33hrs) 2) Name of element tripped/restored: 100MVA-I and 33KV I/C-III. 3) Relay Annunciation: Differential protection, R phase, O/C, E/F on 100MVA-I. O/C and Y phase relay on 33KV I/C-III. 4) Details of physically damaged equipment: Fire observed in yard. 5) Immediate corrective/system normalization steps performed: 33KV I/C-III and 33KV B/C put ON at 10:56hrs.after yard clearance. 6) Any other relevant information: none. Regards, Delhi SLDC 20240126112028 2024/01/26 11:21:15 1) Name of the substation and Time: 220kV Sarita Vihar at 3:51 Hrs 2) Name of element tripped/restored: 220kV Maharani Bagh-Sarita Vihar Ckt restored at 11:15 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220kV Maharani Bagh-Sarita Vihar Ckt restored/Charged at 11:15 Hrs Regards, Delhi SLDC 20240126042928 2024/01/26 04:29:34 1) Name of the substation and Time: 220KV Maharani Bagh and Time-03:56Hrs 2) Name of element tripped/restored: 220KV Maharani Bagh - Sarita Vihar Ckt 3) Relay Annunciation: Gen Trip, R-Phase, Z-1 and Z-2,9.4KM,Auto reclose,86ABC,186 4) Details of physically damaged equipment: No 5) Immediate corrective/system normalization steps performed: imformed to concern officials 6) Any other relevant information: IR-6.17KA,IB-180.3A,IC-107.1A Regards, Delhi SLDC 20240123013333 2024/01/23 01:33:34 1) Name of the substation and Time: 220KV Gopalpur substation and 00:24Hrs. 2) Name of element tripped/restored: 220KV Sabji Mandi Ckt-II 3) Relay Annunciation: 86ABC,Distance Zone-1,6.516KM 4) Details of physically damaged equipment: No Damage 5) Immediate corrective/system normalization steps performed: Informed to concerned officials 6) Any other relevant information: IA-82A,IB-9.69KA,IC-9.67KA and In-6.2A Regards, Delhi SLDC 20240120131602 2024/01/20 13:16:29 1) Name of the substation and Time: 220KV Gazipur and 11:00AM 2) Name of element tripped/restored: 220KV Maharani Bagh Ckt-01 3) Relay Annunciation: B-Phase, Z-I, RYB-Phase 4) Details of physically damaged equipment: No physical damages 5) Immediate corrective/system normalization steps performed: Intimation given to concerned AM Thru Operation staff. 6) Any other relevant information: No Load was affected Regards, Delhi SLDC 20240118085257 2024/01/18 08:52:57 1) Name of the substation and Time: At Shalimar Bagh(03:13)hrs. 2) Name of element tripped/restored: 33KV I/C-I 3) Relay Annunciation: O/C, B phase. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 33KV B/C put ON. 6) Any other relevant information: none. Regards, Delhi SLDC 20240118085036 2024/01/18 08:51:24 1) Name of the substation and Time: At Shalimar bagh (00:40 hrs) 2) Name of element tripped/restored: 33KV I/C-I. 3) Relay Annunciation: tripped on O/C, B phase. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 33KV B/C put ON and load normalized. 6) Any other relevant information: none. Regards, Delhi SLDC 20240117152230 2024/01/17 15:23:13 1) Name of the substation and Time: 220 kV Patparganj 2) Name of element tripped/restored: 100MVA 220/33 kV transformer 3) Relay Annunciation: restored at 15:09 hrs 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: RESTORED 6) Any other relevant information: NA Regards, Delhi SLDC 20240117151935 2024/01/17 15:19:41 1) Name of the substation and Time: 220 kV Patparganj 2) Name of element tripped/restored: 100MVA 220/33 kV transformer 3) Relay Annunciation: restored at 15:09 hrs 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: RESTORED 6) Any other relevant information: NA Regards, Delhi SLDC 20240117151847 2024/01/17 15:19:13 1) Name of the substation and Time: 220 kV Patparganj 2) Name of element tripped/restored: 100MVA 220/33 kV transformer 3) Relay Annunciation: restored at 15:09 hrs 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: RESTORED 6) Any other relevant information: NA Regards, Delhi SLDC 20240117151414 2024/01/17 15:14:14 1) Name of the substation and Time: 220 kV Patparganj 2) Name of element tripped/restored: 100MVA 220/33 kV transformer 3) Relay Annunciation: restored at 15:09 hrs 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: RESTORED 6) Any other relevant information: NA Regards, Delhi SLDC 20240117151247 2024/01/17 15:13:50 1) Name of the substation and Time: 220 kV Patparganj 2) Name of element tripped/restored: 100MVA 220/33 kV transformer 3) Relay Annunciation: restored at 15:09 hrs 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: RESTORED 6) Any other relevant information: NA Regards, Delhi SLDC 20240117133610 2024/01/17 13:36:16 1) Name of the substation and Time: 220 kV Patparganj 13:05hrs 2) Name of element tripped/restored: 100MVA 220/33 kV Transformer-1 3) Relay Annunciation: LV ref, RYB -86 4) Details of physically damaged equipment: b-phase 33 kV LA blast 5) Immediate corrective/system normalization steps performed: permit issued 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240117133543 2024/01/17 13:36:09 1) Name of the substation and Time: 220 kV Patparganj 13:05hrs 2) Name of element tripped/restored: 100MVA 220/33 kV Transformer-1 3) Relay Annunciation: LV ref, RYB -86 4) Details of physically damaged equipment: b-phase 33 kV LA blast 5) Immediate corrective/system normalization steps performed: permit issued 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240115154734 2024/01/15 15:47:34 1) Name of the substation and Time: 220KV Mehrauli, 15:42Hrs. 2) Name of element tripped/restored: 220KV Vasant Kunj-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240115153547 2024/01/15 15:36:35 1) Name of the substation and Time: 220KV Mehrauli, 15:15Hrs. 2) Name of element tripped/restored: 220KV Vasant Kunj-II tripped 3) Relay Annunciation: RYB Phase 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV R. K. Puram-II charged at 15:20Hrs. and supply restored 6) Any other relevant information: No tripping at Vasant Kunj end Regards, Delhi SLDC 20240114090411 2024/01/14 09:04:37 1) Name of the substation and Time: DSIDC Bawana 2) Name of element tripped/restored: At 08:05Hrs 220KV Bawana ckt-I tripped on RYB-phase Z-1 SOTF. Load affected was 32MW. At 08:08Hrs 220KV B/C closed and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240112220453 2024/01/12 22:04:58 1) Name of the substation and Time: 220kV SVR, 03:20 Hrs on 11.01.2024 2) Name of element tripped/restored: 100MVA Tx-III 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Tr. charged on no load at 20:31 hrs, on 12.01.2024 Regards, Delhi SLDC 20240111061426 2024/01/11 06:15:14 1) Name of the substation and Time: 220kV Sarita Vihar @ 03:20Hrs 2) Name of element tripped/restored: 100MVA Tx-III tripped 3) Relay Annunciation: REF HV, TC1 and TC2 unhealthy 4) Details of physically damaged equipment: --- 5) Immediate corrective/system normalization steps performed: --- 6) Any other relevant information: No load affected Regards, Delhi SLDC 20240109171804 2024/01/09 17:18:05 1) Name of the substation and Time: 220kV Naraina @ 13:39Hrs 2) Name of element tripped/restored: 220kV Dwarka-2 restored. 3) Relay Annunciation: -- 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: -- 6) Any other relevant information: -- Regards, Delhi SLDC 20240109022134 2024/01/09 02:21:35 1) Name of the substation and Time: 220KV Dwarka, 01:44Hrs. 2) Name of element tripped/restored: 220KV Naraina-II tripped 3) Relay Annunciation: B-Phase, Zone-1, Fault Location - 3.70Km and Fault Current, B-Phase - 18.109KA at Dwarka end and B-Phase and Zone-1 at Naraina end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuits was already parallel 6) Any other relevant information: Nil Regards, Delhi SLDC 20240109013302 2024/01/09 01:33:49 1) Name of the substation and Time: 400KV Bamnauli, 01:13Hrs. 2) Name of element tripped/restored: 400KV Tughlakabad-II tripped 3) Relay Annunciation: Zone-1 and B-Phase 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Circuits was already parallel 6) Any other relevant information: Nil Regards, Delhi SLDC 20240108211146 2024/01/08 21:11:52 1) Name of the substation and Time: 220KV Shalimaar Bagh, 20:03Hrs. 2) Name of element tripped/restored: 220KV Bawana-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240108152901 2024/01/08 15:29:06 1) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: At 15:19Hrs 220KV Sarita Vihar-Maharani Bagh ckt and 220KV Sarita Vihar-Pragati ckt charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240108120629 2024/01/08 12:06:56 1) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: At 10:25Hrs 220KV Sarita Vihar-Maharani Bagh tripped. Relay at Sarita Vihar end are R-phase Z-1 88m If=5.5KA. Relay at Maharani Bagh end are R-phase Z-2 9.3km If=11.63KA. 220KV Sarita Vihar-Pragati ckt tripped without indication and CVT coming at Sarita Vihar end. No Load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240107155657 2024/01/07 15:57:45 1) Name of the substation and Time: 220KV RPH, 15:52Hrs. 2) Name of element tripped/restored: 33KV I/C-I and 33KV Bus-Coupler restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240107153829 2024/01/07 15:38:29 1) Name of the substation and Time: 220KV RPH, 15:25Hrs. 2) Name of element tripped/restored: 33KV I/C-I and 33KV Bus-Coupler tripped 3) Relay Annunciation: O/C and E/F on 33KV I/C-I and no indication on 33KV Bus-Coupler 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to DISCOM for shifting the load. 6) Any other relevant information: Nil Regards, Delhi SLDC 20240106142652 2024/01/06 14:27:19 1) Name of the substation and Time: 220KV SGTN, 14:22Hrs. 2) Name of element tripped/restored: 160MVA-I along with 66KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240106131535 2024/01/06 13:15:40 1) Name of the substation and Time: 400KV Harsh Vihar, 12:53Hrs. 2) Name of element tripped/restored: 220KV Preet Vihar-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240106131508 2024/01/06 13:15:34 1) Name of the substation and Time: 400KV Harsh Vihar, 12:53Hrs. 2) Name of element tripped/restored: 220KV Preet Vihar-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20240106081042 2024/01/06 08:11:30 1) Name of the substation and Time: Shalimar Bagh 2) Name of element tripped/restored: At 04:58Hrs 220KV Bawana ckt-I tripped. Load affected was 43MW. At 05:02Hrs load normalised through 220KV Rohini1 ckt-I. 3) Relay Annunciation: Relay at Bawana end are YB-phase Z-2 Z-3. Relay at SMB end are YB-phase differential. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240106080201 2024/01/06 08:02:44 1) Name of the substation and Time: SGTN 2) Name of element tripped/restored: At 04:58Hrs 160MVA T/F-1 tripped on HV REF. Load affected was 20MW. At 05:02Hrs 66KV B/C closed and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240105160055 2024/01/05 16:01:43 1) Name of the substation and Time: At DSIDC(15:53)hrs 2) Name of element tripped/restored: 220KV Narela ckt-I. 3) Relay Annunciation: tripped on D/P. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at DSIDC. 6) Any other relevant information: none. Regards, Delhi SLDC 20240105155829 2024/01/05 15:58:33 1) Name of the substation and Time: At DSIDC(14:01)hrs 2) Name of element tripped/restored: 220KV Narela ckt-I. 3) Relay Annunciation: tripped on D/P. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at DSIDC. 6) Any other relevant information: none. Regards, Delhi SLDC 20240105155721 2024/01/05 15:57:48 1) Name of the substation and Time: At DSIDC(14:01)hrs 2) Name of element tripped/restored: 220KV Narela ckt-I. 3) Relay Annunciation: tripped on D/P. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at DSIDC. 6) Any other relevant information: none. Regards, Delhi SLDC 20240105155436 2024/01/05 15:55:03 1) Name of the substation and Time: At DSIDC(11:13) hrs 2) Name of element tripped/restored: 220KV Narela ckt-I. 3) Relay Annunciation: tripped on 86. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at DSIDC. 6) Any other relevant information: none. Regards, Delhi SLDC 20240105123726 2024/01/05 12:38:14 1) Name of the substation and Time: At DSIDC(10:29)hrs 2) Name of element tripped/restored: 220KV Narela ckt-I. 3) Relay Annunciation: tripped on 86. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON and load normalized. 6) Any other relevant information: none. Regards, Delhi SLDC 20240105123404 2024/01/05 12:34:04 1) Name of the substation and Time: At Narela(10:29)hrs 2) Name of element tripped/restored: 220KV Mandola ckt-I and II. 3) Relay Annunciation: supply fail at Narela. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Narela. 6) Any other relevant information: 220KV DSIDC ckt-I was also affected since it was connected from Narela and loading 220KV DSIDC grid. Regards, Delhi SLDC 20240105045341 2024/01/05 04:54:29 1) Name of the substation and Time: 220kV Pragati S/stn at 04:32 Hrs 2) Name of element tripped/restored: 160 MVA Pr Trf no-II 3) Relay Annunciation: Intertripping from GT, 86 operated and 96 T 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: Load affected approx.12MW Regards, Delhi SLDC 20240103022951 2024/01/03 02:29:57 1) Name of the substation and Time: 220kV Loadhi Road @ 01:59Hrs 2) Name of element tripped/restored: 220kV M.Bagh Ckt-2 tripped 3) Relay Annunciation: At L. Road end: 87L, Differential, Dist- Z-1,2,3, LOR-2 At M.Bagh end: Zone-1, B- Ph., 0.4kM, 22.68kA, L3E- Ground. 4) Details of physically damaged equipment: --------- 5) Immediate corrective/system normalization steps performed: Load taken on 220kV M. Bagh-1 through Bus Coupler 6) Any other relevant information: -------- Regards, Delhi SLDC 20240102224042 2024/01/02 22:41:30 1) Name of the substation and Time: 220kV BTPS @ 21:51Hrs 2) Name of element tripped/restored: 220kV Tugalakabad-1 breaker tripped without any indication at BTPS end only. Line is charged from Tugalakbad end. 3) Relay Annunciation: No Relay or any other indicatin. 4) Details of physically damaged equipment: ---- 5) Immediate corrective/system normalization steps performed: Load came on other ckt. 6) Any other relevant information: Breaker was tried to close. Hold for 1-2 second and again tripped w/o any relay/indication. line remained charged from TGK end. Regards, Delhi SLDC 20240102150249 2024/01/02 15:02:50 1) Name of the substation and Time: 220kV Najafgarh, 11:52 Hrs 2) Name of element tripped/restored: 220kV Kanjhawla 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 13:05 Hrs , Charged 6) Any other relevant information: - Regards, Delhi SLDC 20240102150227 2024/01/02 15:02:48 1) Name of the substation and Time: 220kV Najafgarh, 11:52 Hrs 2) Name of element tripped/restored: 220kV Kanjhawla 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 13:05 Hrs , Charged 6) Any other relevant information: - Regards, Delhi SLDC 20240102122903 2024/01/02 12:29:04 1) Name of the substation and Time: 220kv Najafgarh at 11:52 Hrs 2) Name of element tripped/restored: 220kV Kanjhawala Ckt 3) Relay Annunciation: Differential Main -I R, Y, B phase operated Zone-II Distance -13.28kM, Ia-851 Amp, Ib-1.418 kA, Ic-8.478kAmp 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: Load affected Approx. 99 MW of 220kV Kanjhwala S/stn. System of 220kV Kanjhwala S/stn was normalised through 220kV Bawana Ckt-I at 12:05 Hrs. Regards, Delhi SLDC 20240102005547 2024/01/02 00:55:47 1) Name of the substation and Time: At 23:38 hrs. 400 KV Harsh Vihar 2) Name of element tripped/restored: 220 KV Preet Vihar ckt-2 3) Relay Annunciation: TC-1,PD Relay 4) Details of physically damaged equipment: NO 5) Immediate corrective/system normalization steps performed: ckts was already parallel 6) Any other relevant information: informed to concern for early restoration Regards, Delhi SLDC 20240102005355 2024/01/02 00:54:43 1) Name of the substation and Time: At 23:38 hrs. 400 KV Harsh Vihar 2) Name of element tripped/restored: 220 KV Preet Vihar ckt-2 3) Relay Annunciation: TC-1,PD Relay 4) Details of physically damaged equipment: NO 5) Immediate corrective/system normalization steps performed: ckts was already parallel 6) Any other relevant information: informed to concern for early restoration Regards, Delhi SLDC 20240101172644 2024/01/01 17:27:31 1) Name of the substation and Time: 220kV S.Vihar @ 17:20hrs 2) Name of element tripped/restored: 160MVA Tx -I restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240101164905 2024/01/01 16:49:47 1) Name of the substation and Time: 400kV TGK 2) Name of element tripped/restored: From 16:32 Hrs to 16:43 Hrs 220kV B/C-II, Bus section-1, 160mVA Tx-1, 220kV M. Moth-1, 220kV RKP-1 restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240101160722 2024/01/01 16:08:09 1) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: At 13:46Hrs 220KV Bus Section-I, 220KV B/C-II, 160MVA T/F-I, 220KV Masjid Moth ckt-I and 220KV RK Puram ckt-I tripped on 86. No Load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20240101122851 2024/01/01 12:28:57 1) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: At 11:53Hrs 160MVA T/F-1 tripped on O/C R-phase. Load affected 30MW. At 11:54Hrs 66KV B/C closed and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231231194759 2023/12/31 19:48:00 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) 400 kV bawana complete s/stn data suspected 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20231231142524 2023/12/31 14:25:25 1) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: At 11:50Hrs 160MVA T/F-1 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231231071637 2023/12/31 07:16:38 1) Name of the substation and Time: 220 KV Sarita Vihar , At 06:58 Hrs 2) Name of element tripped/restored: 160 MVA Ptx with 66 KV I/C-I 3) Relay Annunciation: O/C,Protr.E/F,O/C Trip,R PH.,86,86; 66 KV I/C Inter tripping 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 66 KV B/C close at 06:59 Hrs 6) Any other relevant information: Approx.16 MW load Affected Regards, Delhi SLDC 20231230205232 2023/12/30 20:52:37 1) Name of the substation and Time: 220kV Kanjhawla, 20:30 Hrs 2) Name of element tripped/restored: 220kV NJF 3) Relay Annunciation: Zone-2, BoPhase, Dis-12.44KM, FC Ic-5.545 KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected and Line was charged only from KNJ end Regards, Delhi SLDC 20231230205204 2023/12/30 20:52:31 1) Name of the substation and Time: 220kV Kanjhawla, 20:30 Hrs 2) Name of element tripped/restored: 220kV NJF 3) Relay Annunciation: Zone-2, BoPhase, Dis-12.44KM, FC Ic-5.545 KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected and Line was charged only from KNJ end Regards, Delhi SLDC 20231230191409 2023/12/30 19:14:14 1) Name of the substation and Time: 400 kV Mandola, 18:04 Hrs 2) Name of element tripped/restored: 400 kV Mandola-MB-Ckt-I 3) Relay Annunciation: 3-Phase fault, 3.4KM, Main-I and II, Zone-1, F/C-22KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Note:-This line (Approx-5KM) is under 400kV Bawana which was already tripped at 14:35 Hrs on Dt. 30.12.2023.After getting clearnce by 400KV Bawana, It is tried but could not hold at 18:04 Hrs. Regards, Delhi SLDC 20231230191320 2023/12/30 19:14:08 1) Name of the substation and Time: 400 kV Mandola, 18:04 Hrs 2) Name of element tripped/restored: 400 kV Mandola-MB-Ckt-I 3) Relay Annunciation: 3-Phase fault, 3.4KM, Main-I and II, Zone-1, F/C-22KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Note:-This line (Approx-5KM) is under 400kV Bawana which was already tripped at 14:35 Hrs on Dt. 30.12.2023.After getting clearnce by 400KV Bawana, It is tried but could not hold at 18:04 Hrs. Regards, Delhi SLDC 20231230143252 2023/12/30 14:32:52 1) Name of the substation and Time: 220 kv lodhiroad @14.30 2) Name of element tripped/restored: 220 kv maharanibagh ckt-2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231229095059 2023/12/29 09:51:25 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: At 09:08Hrs 100MVA 220/33KV T/F-1 tripped on differential RYB-phase O/C E/F with the tripping of 33KV Indira Vihar ckt-II. Load affected was 59MW. At 09:35Hrs 100MVA T/F-1 charged and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231228215006 2023/12/28 21:50:54 1) Name of the substation and Time: HCM Lane 2) Name of element tripped/restored: At 20:05Hrs 100MVA T/F-1 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231228080507 2023/12/28 08:05:13 1) Name of the substation and Time: 220 KV HCML,07:45 Hrs 2) Name of element tripped/restored: 100 MVA Ptx-1 with 33 KV I/C-1 3) Relay Annunciation: Bucloz alaram,Bucloz alaram trip,86AB on Tx Intertripping on 33 KV I/c-1 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: no load effected Regards, Delhi SLDC 20231228080418 2023/12/28 08:05:06 1) Name of the substation and Time: 220 KV HCML,07:45 Hrs 2) Name of element tripped/restored: 100 MVA Ptx-1 with 33 KV I/C-1 3) Relay Annunciation: Bucloz alaram,Bucloz alaram trip,86AB on Tx Intertripping on 33 KV I/c-1 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: no load effected Regards, Delhi SLDC 20231228015723 2023/12/28 01:57:29 1) Name of the substation and Time: 220kV SVR,01:35Hrs 2) Name of element tripped/restored: 220kV MB Ckt (tripped both end) 3) Relay Annunciation: At 220kV SVR:-B-Ph Trip, Zone-1,FL-3.65KM, Ia-160.2A, Ib-157.4A,Ic-3.912KA, In-4.22KA, 186ABC. At 220kV MBG:-Dis.-5.5KM, Zone-1, Ib-13.43KA, In1-0.16KA,In2-0.17KA, B-Phase Trip, 186ABC 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20231228015656 2023/12/28 01:57:23 1) Name of the substation and Time: 220kV SVR,01:35Hrs 2) Name of element tripped/restored: 220kV MB Ckt (tripped both end) 3) Relay Annunciation: At 220kV SVR:-B-Ph Trip, Zone-1,FL-3.65KM, Ia-160.2A, Ib-157.4A,Ic-3.912KA, In-4.22KA, 186ABC. At 220kV MBG:-Dis.-5.5KM, Zone-1, Ib-13.43KA, In1-0.16KA,In2-0.17KA, B-Phase Trip, 186ABC 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20231227100217 2023/12/27 10:02:18 1) Name of the substation and Time: At Tughlakabad(09:44hrs) 2) Name of element tripped/restored: 220KV Mehrauli ckt-II. 3) Relay Annunciation: R phase, zone-I, 3KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: noe. 6) Any other relevant information: none. Regards, Delhi SLDC 20231227074625 2023/12/27 07:46:26 1) Name of the substation and Time: 220KV Tughlakabad, 06:29Hrs. 2) Name of element tripped/restored: 220KV Mehrauli-II tripped 3) Relay Annunciation: General Trip, R-Phase, RYB Phase, 3-Phase Initiate, Zone-1, Zone-2, Fault Location - 3Km and Fault Current, R-Phase - 23.528KA at Tughlakabad end and R-Phase, Line Differential and Fault Current, R-Phase - 27.6KA at Mehrauli end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231227052759 2023/12/27 05:28:05 1) Name of the substation and Time: 220KV Sarita Vihar, 05:00Hrs. 2) Name of element tripped/restored: 220KV Maharani Bagh tripped 3) Relay Annunciation: Y-Phase, Zone-1, E/F, 186, 186ABC, Fault Location - 3.549Km and Fault Current, Y-Phase - 3.835KA at Sarita Vihar end and Y-Phase, E/F, Zone-1, Fault Location - 5.8Km and Fault Current, Y-Phase - 13.14KA at Maharani Bagh end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231227051423 2023/12/27 05:14:45 1) Name of the substation and Time: 220KV PPG, 05:08Hrs. 2) Name of element tripped/restored: 66KV I/C-I restored at 05:05Hrs., 66KV I/C-II restored at 05:07Hrs. and 66KV Bus-Coupler restored at 05:08Hrs. 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231227050157 2023/12/27 05:02:45 1) Name of the substation and Time: 220KV PPG, 04:49Hrs. 2) Name of element tripped/restored: 220KV IP-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231227045228 2023/12/27 04:53:16 1) Name of the substation and Time: At 220KV PPG, 04:05Hrs. 2) Name of element tripped/restored: 220KV IP-I, 66KV I/C-I and II and 66KV Bus-Coupler tripped 3) Relay Annunciation: B-Phase and VT Fail on 220KV IP-I at PPG end and Zone-1 and RYB Phase at IP end. Any Trip, O/C Stage-1, O/C Y-Phase, E/F Stage-1 and Second Harmonie BLK on 66KV I/C-I and II and 66KV Bus-Coupler. 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Instruction given to DISCOM for shifting the load. 6) Any other relevant information: Nil Regards, Delhi SLDC 20231227020138 2023/12/27 02:01:38 1) Name of the substation and Time: 220KV SGTN, 01:17Hrs. 2) Name of element tripped/restored: 220KV Shalimaar Bagh-II tripped 3) Relay Annunciation: B-Phase, Zone-1, 86A and 86B at SGTN end and B-Phase, Zone-1 and Fault Location - 2.537Km at Shalimaar Bagh end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Bus-Coupler charged at 01:20Hrs. and supply restored 6) Any other relevant information: Nil Regards, Delhi SLDC 20231226213914 2023/12/26 21:39:41 1) Name of the substation and Time: 220KV Najafgarh, 21:25Hrs. 2) Name of element tripped/restored: 100MVA-I charged at no-load 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231226213630 2023/12/26 21:36:57 1) Name of the substation and Time: 220KV Najafgarh, 21:12Hrs. 2) Name of element tripped/restored: 20MVA-III charged at no-load 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231226140231 2023/12/26 14:02:37 1) Name of the substation and Time: 400kV Mundka, 11:56 Hrs 2) Name of element tripped/restored: 400kV Bus 1 tripped due to mal-operation of earths witch by itself of reactor bay isolator 402A-89A. 400kV Jhajjar Circuit 2 tripped at jhajjar end 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load was affected at Tikrikalan and all the lines and transformers remained charged. Regards, Delhi SLDC 20231226140204 2023/12/26 14:02:30 1) Name of the substation and Time: 400kV Mundka, 11:56 Hrs 2) Name of element tripped/restored: 400kV Bus 1 tripped due to mal-operation of earths witch by itself of reactor bay isolator 402A-89A. 400kV Jhajjar Circuit 2 tripped at jhajjar end 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load was affected at Tikrikalan and all the lines and transformers remained charged. Regards, Delhi SLDC 20231226090434 2023/12/26 09:04:40 1) Name of the substation and Time: 220kV SOW @ 07:11 Hrs 2) Name of element tripped/restored: 220kV Mandola -1 tripped. Zone-1, Differential, SOTF. Heavy Fog Reported. 3) Relay Annunciation: ------- 4) Details of physically damaged equipment: ------------ 5) Immediate corrective/system normalization steps performed: ------------- 6) Any other relevant information: ------------- Regards, Delhi SLDC 20231226090132 2023/12/26 09:02:20 1) Name of the substation and Time: 220kV K. Gate @ 07:11 2) Name of element tripped/restored: 220kV SOW-II Tripped at K. gate end only with disturbance/ Auto reclosing of SOW- Mandola Ckts. Possibly due to Fog. Relay at K Gate end: R –Ph E/F, 86 A,B,C, 186X RYB. Clearance and check to be done by K. Gate 3) Relay Annunciation: ------- 4) Details of physically damaged equipment: ---------- 5) Immediate corrective/system normalization steps performed: 220kV B/C Put On 6) Any other relevant information: -------- Regards, Delhi SLDC 20231225193014 2023/12/25 19:31:02 1) Name of the substation and Time: 220kV Loadhi Road 2) Name of element tripped/restored: 220kV Maharani Bagh- 1 charged @ 17:54 Hrs. 100MVA Tx 1 and 2 charged @ 18:12 Hrs 3) Relay Annunciation: ............... 4) Details of physically damaged equipment: ............. 5) Immediate corrective/system normalization steps performed: ............. 6) Any other relevant information: .............. Regards, Delhi SLDC 20231225165055 2023/12/25 16:50:56 1) Name of the substation and Time: 220kV Lodhi Road, 15:58 Hrs. 2) Name of element tripped/restored: 100 MVA Tx-III with 33kV -I/C-III and 220kV L. Rd-I tripped at 220kV M.B End 3) Relay Annunciation: At 100 MVA Tx-III:- Differential R,Y and B-Phase, Inst. RY and B-Phase, 86 ABC with inter-tripping. At 220kV MBG end:-Gen Trip, RY-Phase, Zone-1, dist.-2.2KM, Dist. pick up L2-E,Dist loop-L2-E,F. current-IL1-0.79KA, IL2-19.34KA ,IL3-0.7KA 4) Details of physically damaged equipment: Y-Phase cable end box damaged of 100 MVA tx-III 220kV side 5) Immediate corrective/system normalization steps performed: Local supply restored again through 33kV CBI feeder and charged 33kV EOK. 6) Any other relevant information: - Regards, Delhi SLDC 20231225165012 2023/12/25 16:50:54 1) Name of the substation and Time: 220kV Lodhi Road, 15:58 Hrs. 2) Name of element tripped/restored: 100 MVA Tx-III with 33kV -I/C-III and 220kV L. Rd-I tripped at 220kV M.B End 3) Relay Annunciation: At 100 MVA Tx-III:- Differential R,Y and B-Phase, Inst. RY and B-Phase, 86 ABC with inter-tripping. At 220kV MBG end:-Gen Trip, RY-Phase, Zone-1, dist.-2.2KM, Dist. pick up L2-E,Dist loop-L2-E,F. current-IL1-0.79KA, IL2-19.34KA ,IL3-0.7KA 4) Details of physically damaged equipment: Y-Phase cable end box damaged of 100 MVA tx-III 220kV side 5) Immediate corrective/system normalization steps performed: Local supply restored again through 33kV CBI feeder and charged 33kV EOK. 6) Any other relevant information: - Regards, Delhi SLDC 20231225163852 2023/12/25 16:38:58 1) Name of the substation and Time: 220kV L. Road, 15:10 Hrs 2) Name of element tripped/restored: At 15:10 Hrs 220kV M. Bagh-I charged,220kV Bus-I and II charged, At 15:20 Hrs:- 100 MVA Tx-III charged on no load. At 15:45 Hrs-After 33kV CBI put off which was as I/C. 33kV Bus-II charged through 33kV I/C-III with O/g EOK and CBI. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20231225163824 2023/12/25 16:38:51 1) Name of the substation and Time: 220kV L. Road, 15:10 Hrs 2) Name of element tripped/restored: At 15:10 Hrs 220kV M. Bagh-I charged,220kV Bus-I and II charged, At 15:20 Hrs:- 100 MVA Tx-III charged on no load. At 15:45 Hrs-After 33kV CBI put off which was as I/C. 33kV Bus-II charged through 33kV I/C-III with O/g EOK and CBI. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20231225133817 2023/12/25 13:38:44 1) Name of the substation and Time: 220kV P.Steet, 12:50 Hrs 2) Name of element tripped/restored: 220kV Pragati-II, 66kV I/C of 100 MVA Tx due to Monkey electrcuted on 66kV Ridgvalley-I 3) Relay Annunciation: At 220kV P. Street:- E/F stage-I, 86 OPT, Lick fail R-Ph trip this end. At 66kV Ridgvalley-I:- Any Trip R-Ph due to Monkey electrcuted 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 13:19 Hrs normalized the system except 66kV Ridgvalley-I 6) Any other relevant information: Approx load affected 90 MW Regards, Delhi SLDC 20231225065255 2023/12/25 06:52:56 1) Name of the substation and Time: At Bamnoli(06:22hrs) 2) Name of element tripped/restored: 220KV Pappankalan-I ckt-I. 3) Relay Annunciation: RYB phase trip, 12.07KA(Ic), 7.7KM. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON. 6) Any other relevant information: none. Regards, Delhi SLDC 20231224215958 2023/12/24 21:59:59 1) Name of the substation and Time: At Mundka(20:23hrs) 2) Name of element tripped/restored: 400KV Jhatikalan ckt-I. 3) Relay Annunciation: 86 A and B. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: none. 6) Any other relevant information: none. Regards, Delhi SLDC 20231224215801 2023/12/24 21:58:01 1) Name of the substation and Time: At Mundka(19:35hrs) 2) Name of element tripped/restored: 400KV Bawana-II. 3) Relay Annunciation: 86 A and B, RYB trip. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: none 6) Any other relevant information: none. Regards, Delhi SLDC 20231224165858 2023/12/24 16:59:04 1) Name of the substation and Time: 400kV MDK @ 15:44Hrs 2) Name of element tripped/restored: 400kV Bawana-1 restored. 3) Relay Annunciation: --------------- 4) Details of physically damaged equipment: -------------- 5) Immediate corrective/system normalization steps performed: -------------- 6) Any other relevant information: ------------- Regards, Delhi SLDC 20231224161510 2023/12/24 16:15:58 1) Name of the substation and Time: 400kV Mundka @ 14:39 Hrs 2) Name of element tripped/restored: 400kV Jhatikra- 1 tripped. 86A and B only. 3) Relay Annunciation: ------- 4) Details of physically damaged equipment: ----------- 5) Immediate corrective/system normalization steps performed: ------- 6) Any other relevant information: --------- Regards, Delhi SLDC 20231224123347 2023/12/24 12:33:53 1) Name of the substation and Time: 400kV Mundka @ 11:41 Hrs 2) Name of element tripped/restored: 1. 400kV MDK - Jhatikra 2 : Distance - 12.02km, Zone-1, RYB Ph Trip, 86A and B, I (y) = 12.48kA, I(b) = 13.53kA, 186LO 2. 400kV MDK - Bawana 1 and 2 : Breaker Tripped at Mundka End only. Lines remained charged from Bawana end: Same Relays on Both Circuits as given below: Hi Speed Grp A, 86A, Dist RYB 3) Relay Annunciation: -- 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: Load came on other 400kV Ckts 6) Any other relevant information: --- Regards, Delhi SLDC 20231224123258 2023/12/24 12:33:46 1) Name of the substation and Time: 400kV Mundka @ 11:41 Hrs 2) Name of element tripped/restored: 1. 400kV MDK - Jhatikra 2 : Distance - 12.02km, Zone-1, RYB Ph Trip, 86A and B, I (y) = 12.48kA, I(b) = 13.53kA, 186LO 2. 400kV MDK - Bawana 1 and 2 : Breaker Tripped at Mundka End only. Lines remained charged from Bawana end: Same Relays on Both Circuits as given below: Hi Speed Grp A, 86A, Dist RYB 3) Relay Annunciation: -- 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: Load came on other 400kV Ckts 6) Any other relevant information: --- Regards, Delhi SLDC 20231222224002 2023/12/22 22:40:02 1) Name of the substation and Time: 220kV Najafgarh 2) Name of element tripped/restored: 220kv Bamanauli-Najafgarh Ckt-II at 21:54 Hrs. 160 MVA Power Transformer no-II at 22:10 Hrs 66kV Incomer no-II at 22:22 Hrs. 66kV Outgoing feeder i.e. Jaffar Pur and Mitrou Ckt charged at 22:30 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Partially system normalised at 220kV Najafgarh and load taken by Discom. Regards, Delhi SLDC 20231222220731 2023/12/22 22:08:19 1) Name of the substation and Time: 220kV Najafgarh 2) Name of element tripped/restored: 220kV Bamnauli-Najafgarh Ckt-II charged at 21:54 Hrs. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220kV Bamnauli-Najafgarh Ckt-II charged at 21:54 Hrs Regards, Delhi SLDC 20231222190415 2023/12/22 19:04:16 1) Name of the substation and Time: 220kV Najafgarh at 16:33 Hrs 2) Name of element tripped/restored: No supply at 220kV Najafgarh S/stn 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: As message given by DM(T) Oprns at 18:35 Hrs that heavy smoke is observed in control room and 11kV LT switchgear room and restoration of S/stn is not possible. Total load is affected. Regards, Delhi SLDC 20231222165019 2023/12/22 16:50:46 1) Name of the substation and Time: 400 kV BAMMNOULI @16.29 2) Name of element tripped/restored: 220 KV NJF CKT-1 and 2 3) Relay Annunciation: 186 A,AB,AC,86 T 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20231222134913 2023/12/22 13:49:13 1) Name of the substation and Time: test 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: test Regards, Delhi SLDC 20231222114159 2023/12/22 11:42:26 1) Name of the substation and Time: 220 kv sow @11.19 2) Name of element tripped/restored: 220 kV mandola ckt-1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: Na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231222073643 2023/12/22 07:37:31 1) Name of the substation and Time: At Wazirabad(06:29hrs) 2) Name of element tripped/restored: 220KV Mandola ckt-1 3) Relay Annunciation: R and B phase, Z-1, 5.728KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other parallel ckts. 6) Any other relevant information: CVT of Mandola -! available at Wazirabad end. Regards, Delhi SLDC 20231220130420 2023/12/20 13:05:08 1) Name of the substation and Time: At Patparganj(12:22hrs) 2) Name of element tripped/restored: 100MVA-III(220/33KV) transformer. 3) Relay Annunciation: 30A bucholz trip. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: No load was affected. 6) Any other relevant information: none. Regards, Delhi SLDC 20231220115702 2023/12/20 11:57:50 1) Name of the substation and Time: At Patparganj(11:35hrs) 2) Name of element tripped/restored: 100MVA-III(220/33KV) Transformer. 3) Relay Annunciation: 30A bucholz trip. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: load taken by other transformers. 6) Any other relevant information: none. Regards, Delhi SLDC 20231219223632 2023/12/19 22:36:32 1) Name of the substation and Time: 400 KV Bawana:-15:20 Hrs 2) Name of element tripped/restored: 315 MVA ICT-6 Charged At 19:30 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 315 MVA ICT-6 Charged At 19:30 Hrs Regards, Delhi SLDC 20231219175042 2023/12/19 17:51:25 1) Name of the substation and Time: 400kV Bawana,15:20 Hrs 2) Name of element tripped/restored: 315 MVA Tx, ICT-6 3) Relay Annunciation: Diffenetial protection3-Ph, 96 Bus-Bar 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: No load affected 6) Any other relevant information: - Regards, Delhi SLDC 20231218174835 2023/12/18 17:48:41 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) 400 kv munduka ict data suspected/not updated 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20231218174747 2023/12/18 17:48:35 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) 400 kv munduka ict data suspected/not updated 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20231216110757 2023/12/16 11:08:03 1) Name of the substation and Time: 220 kv vasantkunj @10.05 2) Name of element tripped/restored: 66 i/c-2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231216110708 2023/12/16 11:07:56 1) Name of the substation and Time: 220 kv vasantkunj @10.05 2) Name of element tripped/restored: 66 i/c-2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231216080546 2023/12/16 08:05:47 1) Name of the substation and Time: 220 kv vasant kunj 2) Name of element tripped/restored: 66kv i/c -2 3) Relay Annunciation: 86 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231214183724 2023/12/14 18:37:51 1) Name of the substation and Time: 220kV TKD, 18:06 Hrs. 2) Name of element tripped/restored: 160 MVA Tx-I with Its I/C-I 3) Relay Annunciation: Gen. trip,RY and B-Ph trip,Diff. Bais trip, Diff. Inst. trip 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected as B/C in ON position already Regards, Delhi SLDC 20231214104622 2023/12/14 10:46:22 1) Name of the substation and Time: 400 kv bawana 2) Name of element tripped/restored: 220 kv DSIDC bawana ckt-1 3) Relay Annunciation: oprn staff instructed to putt of 220 kv DSIDC BAWANA CKT-2 However operation staff misinterpredted the instruction givien by SLDC and put off 220 kv Dsidc bawana ckt-1 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: DISCOM SHIFTED LOAD 6) Any other relevant information: NA Regards, Delhi SLDC 20231214104617 2023/12/14 10:46:21 1) Name of the substation and Time: 400 kv bawana 2) Name of element tripped/restored: 220 kv DSIDC bawana ckt-1 3) Relay Annunciation: oprn staff instructed to putt of 220 kv DSIDC BAWANA CKT-2 However operation staff misinterpredted the instruction givien by SLDC and put off 220 kv Dsidc bawana ckt-1 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: DISCOM SHIFTED LOAD 6) Any other relevant information: NA Regards, Delhi SLDC 20231214104529 2023/12/14 10:46:16 1) Name of the substation and Time: 400 kv bawana 2) Name of element tripped/restored: 220 kv DSIDC bawana ckt-1 3) Relay Annunciation: oprn staff instructed to putt of 220 kv DSIDC BAWANA CKT-2 However operation staff misinterpredted the instruction givien by SLDC and put off 220 kv Dsidc bawana ckt-1 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: DISCOM SHIFTED LOAD 6) Any other relevant information: NA Regards, Delhi SLDC 20231214000308 2023/12/14 00:03:14 1) Name of the substation and Time: At Wazirabad(23:23)hrs 2) Name of element tripped/restored: 160MVA transformer 3) Relay Annunciation: bucholz trip. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 66KV B/C put on. 6) Any other relevant information: none. Regards, Delhi SLDC 20231213161739 2023/12/13 16:18:27 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) 400 kv bawana SCADA DATA SUSPECTED FREQUENTLY 2) 220 KV IP STATION DATA SUSPECTED 3) 22 KV DEV NAGAR DATA SUSPECETD 4) NA 5) NA 6) AS PER INSTRUCTION AGM SO Regards, Delhi SLDC 20231209091441 2023/12/09 09:15:03 1) Name of the substation and Time: At Shalimarbagh(07:25hrs) 2) Name of element tripped/restored: 33KV I/C-III. 3) Relay Annunciation: O/C, RYB phase. 4) Details of physically damaged equipment: B phase CT of 33KV Hyderpur-I damaged. 5) Immediate corrective/system normalization steps performed: 33KV B/C put ON. 6) Any other relevant information: none. Regards, Delhi SLDC 20231209091019 2023/12/09 09:10:46 1) Name of the substation and Time: At Okhla(07:05)hrs 2) Name of element tripped/restored: 20MVA-I 3) Relay Annunciation: tripped on OLTC, Bucholz, 30B,OSR. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: BRPL asked for backfeeding. 6) Any other relevant information: 11KV I/C-1 tripped on 86. Regards, Delhi SLDC 20231208100724 2023/12/08 10:07:25 1) Name of the substation and Time: 400KV Bawana, 09:23Hrs. 2) Name of element tripped/restored: 220KV Kanjhawala-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Clerance given by Sh. Anil Kumar, Foreman, Kanjhawala at 08:00Hrs. and clerance given by Sh. Manish Kumar, JE(E), Bawana at 09:17Hrs. This feeder tripped off at 23:56Hrs. on 07.12.2023. Regards, Delhi SLDC 20231208095920 2023/12/08 09:59:26 1) Name of the substation and Time: 220KV Parkstreet, 09:07Hrs. 2) Name of element tripped/restored: 33KV I/C-I, 33KV I/C-II, 33KV Prashad Nagar-I and 33KV Motia Khan-II tripped 3) Relay Annunciation: Any Trip, O/C ST1, O/C B-Phase, E/F ST1 and 86 on 33KV I/C-I, Any Trip, O/C ST1, O/C B-Phase and 86 on 33KV I/C-II, Bucchholz Relay operated on 220/33KV 100MVA-I but not tripped, RYB Phase, Zone-1, SOTF and 95 on 33KV Prashad Nagar-I and RYB Phase, Zone-1 and SOTF on 33KV Motia Khan-II 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Instruction given to DISCOM for Shifting the load 6) Any other relevant information: Total load effected - 2 MW. Monkey jumped on 33KV I/C-I as information provided by Operation Staff of Park Street. Regards, Delhi SLDC 20231208095852 2023/12/08 09:59:19 1) Name of the substation and Time: 220KV Parkstreet, 09:07Hrs. 2) Name of element tripped/restored: 33KV I/C-I, 33KV I/C-II, 33KV Prashad Nagar-I and 33KV Motia Khan-II tripped 3) Relay Annunciation: Any Trip, O/C ST1, O/C B-Phase, E/F ST1 and 86 on 33KV I/C-I, Any Trip, O/C ST1, O/C B-Phase and 86 on 33KV I/C-II, Bucchholz Relay operated on 220/33KV 100MVA-I but not tripped, RYB Phase, Zone-1, SOTF and 95 on 33KV Prashad Nagar-I and RYB Phase, Zone-1 and SOTF on 33KV Motia Khan-II 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Instruction given to DISCOM for Shifting the load 6) Any other relevant information: Total load effected - 2 MW. Monkey jumped on 33KV I/C-I as information provided by Operation Staff of Park Street. Regards, Delhi SLDC 20231208002342 2023/12/08 00:23:48 1) Name of the substation and Time: 400KV Bawana, 11:56Hrs. 2) Name of element tripped/restored: 220KV Kanjhawala-I tripped 3) Relay Annunciation: B-Phase Trip, Fault Location - 22.11Km and Fault Current, B-Phase - 4.24KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Bus-Coupler charged at 11:58Hrs. at 220KV Kanjhawala and supply restored 6) Any other relevant information: CVT failed and no tripping at Kanjhawala end Regards, Delhi SLDC 20231208002314 2023/12/08 00:23:41 1) Name of the substation and Time: 400KV Bawana, 11:56Hrs. 2) Name of element tripped/restored: 220KV Kanjhawala-I tripped 3) Relay Annunciation: B-Phase Trip, Fault Location - 22.11Km and Fault Current, B-Phase - 4.24KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Bus-Coupler charged at 11:58Hrs. at 220KV Kanjhawala and supply restored 6) Any other relevant information: CVT failed and no tripping at Kanjhawala end Regards, Delhi SLDC 20231207093653 2023/12/07 09:36:53 1) Name of the substation and Time: 220kV Maharani Bagh at 09:12 Hrs 2) Name of element tripped/restored: 220kV Sarita Vihar Ckt 3) Relay Annunciation: At Maharani Bagh-R Phase, zone -1, general Trip, 86 A,B,C operated, Fault Current-11.01kamp, Ib-127.2 amp, Ic-178Amp, In-10.71kAmp.Distance-7.24kM At Sarita Vihar-R Phase, zone -1, 186AB, 86 A,B,C operated, Auto reclose lockout protection trip circuit faulty, Fault Current-3.47kamp, Ib-129.7 amp, Ic-174.2Amp, In-3.73kAmp. distance-5.237kM 4) Details of physically damaged equipment: Na 5) Immediate corrective/system normalization steps performed: Na 6) Any other relevant information: No load affected Regards, Delhi SLDC 20231207093644 2023/12/07 09:36:45 1) Name of the substation and Time: 220kV Maharani Bagh at 09:12 Hrs 2) Name of element tripped/restored: 220kV Sarita Vihar Ckt 3) Relay Annunciation: At Maharani Bagh-R Phase, zone -1, general Trip, 86 A,B,C operated, Fault Current-11.01kamp, Ib-127.2 amp, Ic-178Amp, In-10.71kAmp.Distance-7.24kM At Sarita Vihar-R Phase, zone -1, 186AB, 86 A,B,C operated, Auto reclose lockout protection trip circuit faulty, Fault Current-3.47kamp, Ib-129.7 amp, Ic-174.2Amp, In-3.73kAmp. distance-5.237kM 4) Details of physically damaged equipment: Na 5) Immediate corrective/system normalization steps performed: Na 6) Any other relevant information: No load affected Regards, Delhi SLDC 20231206152259 2023/12/06 15:23:04 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) test 2) test 3) test 4) test 5) test 6) test Regards, Delhi SLDC 20231206151902 2023/12/06 15:19:08 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) test 2) NA 3) NA 4) NA 5) NA 6) NA Regards, Delhi SLDC 20231204151533 2023/12/04 15:15:39 1) Name of the substation and Time: At Bawana(14:02)hrs 2) Name of element tripped/restored: 220KV Shalimarbagh ckt-I. 3) Relay Annunciation: Tripped on differential protection. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV Rohini ckt-1 put ON at Shalimarbagh grid. 6) Any other relevant information: Load of SGTN substatio affected. Regards, Delhi SLDC 20231204151526 2023/12/04 15:15:32 1) Name of the substation and Time: At Bawana(14:02)hrs 2) Name of element tripped/restored: 220KV Shalimarbagh ckt-I. 3) Relay Annunciation: Tripped on differential protection. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV Rohini ckt-1 put ON at Shalimarbagh grid. 6) Any other relevant information: Load of SGTN substatio affected. Regards, Delhi SLDC 20231204151219 2023/12/04 15:12:24 1) Name of the substation and Time: At 220KV Wazirpur(14:18)hrs 2) Name of element tripped/restored: 100MVA-I and II. 3) Relay Annunciation: tripped without indication. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: TPDDL asked to C/O load. 6) Any other relevant information: none. Regards, Delhi SLDC 20231204150930 2023/12/04 15:09:57 1) Name of the substation and Time: At BTPS(14:08hrs) 2) Name of element tripped/restored: 220KV Okhla ckt-I. 3) Relay Annunciation: gen trip, Z-1, O/V, 86 A and B. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: yard clearance awaited. 6) Any other relevant information: CVT of 220KV Okhla ckt-1 was available at BTPS end. Regards, Delhi SLDC 20231204150518 2023/12/04 15:06:01 1) Name of the substation and Time: At 220KV BTPS(13:42hrs) 2) Name of element tripped/restored: 220KV Okhla ckt-I. 3) Relay Annunciation: gen trip, Z-I,O/V, 86A and 86B. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Yard clearance taken. 6) Any other relevant information: CVT of 220KV Okhla ckt-1 was available at BTPS end. Regards, Delhi SLDC 20231204150214 2023/12/04 15:02:19 1) Name of the substation and Time: At 220KV Wazirpur(13:53)hrs. 2) Name of element tripped/restored: 100MVA-I and II. 3) Relay Annunciation: Tripped without indication. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: TPDDL asked to C/O load. 6) Any other relevant information: none. Regards, Delhi SLDC 20231204150126 2023/12/04 15:02:14 1) Name of the substation and Time: At 220KV Wazirpur(13:53)hrs. 2) Name of element tripped/restored: 100MVA-I and II. 3) Relay Annunciation: Tripped without indication. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: TPDDL asked to C/O load. 6) Any other relevant information: none. Regards, Delhi SLDC 20231204145813 2023/12/04 14:58:18 1) Name of the substation and Time: At Bawana(13:53hrs). 2) Name of element tripped/restored: 220KV Shalimarbagh ckt-I 3) Relay Annunciation: Tripped on differential protection. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV Rohini-I put ON at Shalimarbagh grid and load normalized. 6) Any other relevant information: Load of 220KV SGTN substation was affected. Regards, Delhi SLDC 20231204004904 2023/12/04 00:49:10 1) Name of the substation and Time: 400kV Bawana at 23:10 Hrs 2) Name of element tripped/restored: 220kV Bawana -Shalimar Bagh Ckt-I restored at 00:38 hrs dt.04.12.23 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20231204004836 2023/12/04 00:49:03 1) Name of the substation and Time: 400kV Bawana at 23:10 Hrs 2) Name of element tripped/restored: 220kV Bawana -Shalimar Bagh Ckt-I restored at 00:38 hrs dt.04.12.23 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20231203234737 2023/12/03 23:48:25 1) Name of the substation and Time: 400kV Bawana at 23:10 Hrs 2) Name of element tripped/restored: 220kV Bawana -Shalimar Bagh Ckt-I 3) Relay Annunciation: Y phase-Differential Trip intertrip, Master relay. Distance-5.798kM, Ia-96.15 Amp, Ib-643.0Amp, Ic-380.2 Amp,In-120.0 Amp at 400kV Bawana. Y phase-Differential Trip, intertrip, 86 ABC operated. at 220kV Shalimar Bagh 4) Details of physically damaged equipment: Na 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: Load affected-Approx.102 MW, The supply was restored through 220kV Shalimar Bagh-Rohini-I-Ckt-I and System was normalized at 23:14 Hrs Regards, Delhi SLDC 20231202185756 2023/12/02 18:58:02 1) Name of the substation and Time: 220KV Geeta Colony, 18:50Hrs. 2) Name of element tripped/restored: 220KV SOW-I and II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231202185729 2023/12/02 18:57:56 1) Name of the substation and Time: 220KV Geeta Colony, 18:50Hrs. 2) Name of element tripped/restored: 220KV SOW-I and II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231202110437 2023/12/02 11:04:43 1) Name of the substation and Time: 220kV Parkstreet, 8:46 Hrs 2) Name of element tripped/restored: 33kV Incomer no-I and II restored at 9:43 Hrs 3) Relay Annunciation: Any trip, overcurrent R phase, Earthfault, 86 operated on 33kv Incomer no-I. Any trip, overcurrent Y and B phase, TC faulty, 86 operated on 33kv Incomer no-II. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: Load taken and system normalized at 9:48 Hrs Regards, Delhi SLDC 20231202110410 2023/12/02 11:04:37 1) Name of the substation and Time: 220kV Parkstreet, 8:46 Hrs 2) Name of element tripped/restored: 33kV Incomer no-I and II restored at 9:43 Hrs 3) Relay Annunciation: Any trip, overcurrent R phase, Earthfault, 86 operated on 33kv Incomer no-I. Any trip, overcurrent Y and B phase, TC faulty, 86 operated on 33kv Incomer no-II. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: Load taken and system normalized at 9:48 Hrs Regards, Delhi SLDC 20231201210159 2023/12/01 21:02:47 1) Name of the substation and Time: 220kV Sabjimandi @ 20:53Hrs 2) Name of element tripped/restored: 100MVA-II charged 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: Charged on Single Cable (LV) Regards, Delhi SLDC 20231201105501 2023/12/01 10:55:28 1) Name of the substation and Time: 220 KV Sarita vihar At 10:44 Hrs 2) Name of element tripped/restored: 220 KV Maharani bagh ckt charged at 10:44 hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 KV Maharani bagh ckt charged at 10:44 hrs Regards, Delhi SLDC 20231201094405 2023/12/01 09:44:31 1) Name of the substation and Time: At 220KV Sarita Vihar(08:25hrs) 2) Name of element tripped/restored: 220KV Maharani Bagh 3) Relay Annunciation: low air pressure. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Sarita Vihar for second feed to Pragati station. 6) Any other relevant information: No load was affected. Regards, Delhi SLDC 20231129162030 2023/11/29 16:21:17 1) Name of the substation and Time: 220kV SMB @ 16:13 Hrs 2) Name of element tripped/restored: 220kV SMB-BWN Ckt-1 restored which was tripped @15:06 Hrs while testing by prot. 3) Relay Annunciation: RYB Differential 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220kV B/C was put ON @ 15:10Hrs and 143MW approx load normal. 6) Any other relevant information: Nil Regards, Delhi SLDC 20231129070736 2023/11/29 07:07:37 1) Name of the substation and Time: 220kV Kanjhawala at 5:56 Hrs 2) Name of element tripped/restored: 220kV Khanjhawala-Bawana Ckt I , 220kV Khanjhawala-Bawana Ckt II, 220kV Khanjhawala-Mundka 3) Relay Annunciation: Y phase, differential, 86 operated , Fault current-5.4 kA on kNJ-BWN Ckt-I at KNJ End Y phase, distance, 86 operated , Fault current-5.4 kA on kNJ-MDK Ckt at KNJ End Y phase, differential, 86 operated, Fault current-4.93 kA, Distance-14.26kM on kNJ-BWN Ckt-II at Bawana End 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: Load affected-80 MW, The supply restored through 220kV Najafgarh at 06:19 Hrs and system normalized. 220kV CVT appeared at 220kV Kanajhawala-Bawana Ckt-I on 06:49 Hrs Regards, Delhi SLDC 20231129063719 2023/11/29 06:38:08 1) Name of the substation and Time: 220 KV Gopal Pur At 06:10 Hrs 2) Name of element tripped/restored: 220 KV Mandola ckt-I charge at 06:10 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 KV Mandola ckt-I charge at 06:10 Hrs Regards, Delhi SLDC 20231129052236 2023/11/29 05:22:42 1) Name of the substation and Time: 220kV Gopalpur S/stn at 04:59 Hrs 2) Name of element tripped/restored: 220kV Mandola Ckt-I 3) Relay Annunciation: B Phase, zone-1, 86 operated. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: Bus coupler ON-No load affected. CVT apppearing at 220kV Gopalpur S/stn Regards, Delhi SLDC 20231127130006 2023/11/27 13:00:07 1) Name of the substation and Time: 220KV RPH, 12:55Hrs. 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231127125944 2023/11/27 13:00:06 1) Name of the substation and Time: 220KV RPH, 12:55Hrs. 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231127124404 2023/11/27 12:44:05 1) Name of the substation and Time: 220KV RPH, 12:20Hrs. 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I tripped 3) Relay Annunciation: 186A, 186B and 186X on 100MVA-I and Differential Protection and LB E/F on 33KV I/C-I 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Instruction given to Discom for shifting of load Regards, Delhi SLDC 20231125142920 2023/11/25 14:30:03 1) Name of the substation and Time: At Gazipur(12:11hrs) 2) Name of element tripped/restored: 66KV I/C-III. 3) Relay Annunciation: general trip RYB phase, O/C and E/F. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 66KV I/C-II already charged. 6) Any other relevant information: nil. Regards, Delhi SLDC 20231125091644 2023/11/25 09:16:44 1) Name of the substation and Time: 220KV Gazipur, 09:10Hrs. 2) Name of element tripped/restored: 66KV I/C-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 66KV Bus-Coupler put off at 09:11Hrs. 6) Any other relevant information: Nil Regards, Delhi SLDC 20231125085701 2023/11/25 08:57:02 1) Name of the substation and Time: 220KV Gazipur, 08:35Hrs. 2) Name of element tripped/restored: 66KV I/C-II and III tripped 3) Relay Annunciation: No indication on 66KV I/C-II and General Trip, RYB Phase, O/C and E/F on 66KV I/C-III 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 66KV Bus-Coupler charged at 08:38Hrs. and supply restored 6) Any other relevant information: Nil Regards, Delhi SLDC 20231125085639 2023/11/25 08:57:01 1) Name of the substation and Time: 220KV Gazipur, 08:35Hrs. 2) Name of element tripped/restored: 66KV I/C-II and III tripped 3) Relay Annunciation: No indication on 66KV I/C-II and General Trip, RYB Phase, O/C and E/F on 66KV I/C-III 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 66KV Bus-Coupler charged at 08:38Hrs. and supply restored 6) Any other relevant information: Nil Regards, Delhi SLDC 20231123130220 2023/11/23 13:02:21 1) Name of the substation and Time: 220kV Vasant Kunj at 12:30 Hrs 2) Name of element tripped/restored: 66kV Incomer no-I 3) Relay Annunciation: Any Trip, Earth fault 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 66kV Bus coupler put on at 12:40 Hrs and 66kV Incomer charged at 12:52 Hrs and system normalized. Except 66kV Palam Ckt tripped. 6) Any other relevant information: Load affected 20MW(Approx.) Regards, Delhi SLDC 20231123130137 2023/11/23 13:02:20 1) Name of the substation and Time: 220kV Vasant Kunj at 12:30 Hrs 2) Name of element tripped/restored: 66kV Incomer no-I 3) Relay Annunciation: Any Trip, Earth fault 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 66kV Bus coupler put on at 12:40 Hrs and 66kV Incomer charged at 12:52 Hrs and system normalized. Except 66kV Palam Ckt tripped. 6) Any other relevant information: Load affected 20MW(Approx.) Regards, Delhi SLDC 20231123090159 2023/11/23 09:02:42 1) Name of the substation and Time: At DSIIDC Bawana(07:35hrs) 2) Name of element tripped/restored: 100MVA-II 3) Relay Annunciation: 30A,30B, Bucholz trip. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other transformer. 6) Any other relevant information: none. Regards, Delhi SLDC 20231121192807 2023/11/21 19:28:50 1) Name of the substation and Time: 220KV Park Street, 18:50Hrs. 2) Name of element tripped/restored: 220/33KV 100MVA-I along with 33KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Its B-Phase LV side one cable found faulty. So, restored through single cable at B-Phase LV side. Regards, Delhi SLDC 20231121072351 2023/11/21 07:23:52 1) Name of the substation and Time: 220 KV Kanjhawala , 07:10 Hrs 2) Name of element tripped/restored: 220 KV Najafghar Ckt 3) Relay Annunciation: Zone-II, Y phase 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load effected Regards, Delhi SLDC 20231121031435 2023/11/21 03:14:35 1) Name of the substation and Time: 220kV Parkstreet , 02:40 Hrs 2) Name of element tripped/restored: 100MVA, 220/33kV Power Trf no-I Alongwith I/C no-I 3) Relay Annunciation: Differential operated, LV REF, 86 A and B master relay operated. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: Informed to NDMC and BYPL to shift the load at their end. Load affected Approx-13MW Regards, Delhi SLDC 20231121031412 2023/11/21 03:14:34 1) Name of the substation and Time: 220kV Parkstreet , 02:40 Hrs 2) Name of element tripped/restored: 100MVA, 220/33kV Power Trf no-I Alongwith I/C no-I 3) Relay Annunciation: Differential operated, LV REF, 86 A and B master relay operated. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: Informed to NDMC and BYPL to shift the load at their end. Load affected Approx-13MW Regards, Delhi SLDC 20231120161655 2023/11/20 16:16:55 1) Name of the substation and Time: 220KV Lodhi Road, 16:13Hrs. 2) Name of element tripped/restored: 100MVA-III along with 33KV I/C-III restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231120161633 2023/11/20 16:16:54 1) Name of the substation and Time: 220KV Lodhi Road, 16:13Hrs. 2) Name of element tripped/restored: 100MVA-III along with 33KV I/C-III restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231120123329 2023/11/20 12:33:51 1) Name of the substation and Time: 220kV Lodhi ROad. 09.06Hrs 2) Name of element tripped/restored: 100MVA Transformer No.3 along with In/Comer 3 3) Relay Annunciation: Tr-III- R-Ph, Y-Ph, I/Comer-III- 86A, 86B 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Monkey spoted at transformer Regards, Delhi SLDC 20231119135252 2023/11/19 13:52:53 1) Name of the substation and Time: 220KV Vasant Kunj, 11:01Hrs. 2) Name of element tripped/restored: 220KV Mehrauli-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231118214610 2023/11/18 21:46:53 1) Name of the substation and Time: vasant Kunj 2) Name of element tripped/restored: At 19:52Hrs supply fail of 220KV Mehrauli ckt-II. Relay at Mehrauli end were E/F Stage I RYB-Phase. Load affected was 45MW. At 19:55Hrs load normalised through 220KV R.K Puram ckt-II. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231118160743 2023/11/18 16:07:44 1) Name of the substation and Time: 400 KV Mundka At 14:06 Hrs. 2) Name of element tripped/restored: 400 KV Jhajjar Ckt-1 3) Relay Annunciation: R-Phase,Z-1,Fault current 13.6 KA,Distt.-17.17 KM 4) Details of physically damaged equipment: NO 5) Immediate corrective/system normalization steps performed: CVT available at 400 KV Mundka end.Charging code applied after yard clearance. 6) Any other relevant information: Ckt-1 normalize at 16:04 Hrs. No load affected due to tripping. Regards, Delhi SLDC 20231118160700 2023/11/18 16:07:43 1) Name of the substation and Time: 400 KV Mundka At 14:06 Hrs. 2) Name of element tripped/restored: 400 KV Jhajjar Ckt-1 3) Relay Annunciation: R-Phase,Z-1,Fault current 13.6 KA,Distt.-17.17 KM 4) Details of physically damaged equipment: NO 5) Immediate corrective/system normalization steps performed: CVT available at 400 KV Mundka end.Charging code applied after yard clearance. 6) Any other relevant information: Ckt-1 normalize at 16:04 Hrs. No load affected due to tripping. Regards, Delhi SLDC 20231117190902 2023/11/17 19:09:02 1) Name of the substation and Time: 220 KV WZP At 18:47 Hrs 2) Name of element tripped/restored: 100 MVA pTx -II Charged on NO load at 18:47 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 100 MVA pTx -II put off from dt 05.11.2023 10:46 Hrs and Charged on NO load at 18:47 Hrsdt 17.11.2023 Regards, Delhi SLDC 20231117190839 2023/11/17 19:09:01 1) Name of the substation and Time: 220 KV WZP At 18:47 Hrs 2) Name of element tripped/restored: 100 MVA pTx -II Charged on NO load at 18:47 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 100 MVA pTx -II put off from dt 05.11.2023 10:46 Hrs and Charged on NO load at 18:47 Hrsdt 17.11.2023 Regards, Delhi SLDC 20231117120954 2023/11/17 12:10:37 1) Name of the substation and Time: test 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: test Regards, Delhi SLDC 20231115152843 2023/11/15 15:28:44 1) Name of the substation and Time: 220kV PPK-I, 14:25 Hrs 2) Name of element tripped/restored: 33kV I/C-I,II,III with 33kV Hari Ngr 3) Relay Annunciation: 1) 33kV/I/C-I:-any trip E/F st-I, O/C- B-PH 2) 33kV/I/C-II:-any trip E/F st-I, O/C- B-PH 3) 33kV/I/C-III:-any trip E/F st-I, O/C- B-PH. 4) 33kV Hari Ngr:-E/F, St-I B-Ph 4) Details of physically damaged equipment: B-Phase LA Damaged of 33kV Hari Ngr 5) Immediate corrective/system normalization steps performed: 14:57 system normalized except-33kV I/C-I, Budela-II and G2 Ckt-I 6) Any other relevant information: Approx.85 MW load affected Regards, Delhi SLDC 20231115044635 2023/11/15 04:46:35 1) Name of the substation and Time: Vasant Kunj At 04:00 Hrs. 2) Name of element tripped/restored: 220 KV RK PURAM Ckt-1 3) Relay Annunciation: O/V,Dist. Prot ,86 4) Details of physically damaged equipment: no 5) Immediate corrective/system normalization steps performed: 220KV Mehlauli Ckt-1 made ON to normalize load 6) Any other relevant information: As informed 04 MW load affected for approx. 06 Min Regards, Delhi SLDC 20231115043753 2023/11/15 04:37:54 1) Name of the substation and Time: 400 KV BAMNAULI at 00:56 Hrs. 2) Name of element tripped/restored: 220KV PPK-2 Ckt-2 3) Relay Annunciation: B-Phase,Dist.trip,86 ABC,Auto reclose 4) Details of physically damaged equipment: no 5) Immediate corrective/system normalization steps performed: after clearance try taken and ckt hold ok 6) Any other relevant information: no laod affected as ckt was at no load.Ckt normalize at 01:48 Hrs Regards, Delhi SLDC 20231114175704 2023/11/14 17:57:05 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: At 17:38Hrs 220KV Dev Nagar ckt charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231114154852 2023/11/14 15:48:54 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: At 15:18Hrs 220KV Dev Nagar ckt tripped on RYB-phase Z-2 Z-3. Also 100MVA T/F-3 tripped on differential relay at 220KV Dev Nagar. Load affected was 32MW. Discoms had shifted their load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231113074919 2023/11/13 07:49:20 1) Name of the substation and Time: 220 KV Tunglaka bad at 07:25 2) Name of element tripped/restored: 220 KV Tunglakabad-RKP-II charge at 07:36 Hrs 220 KV Tunglakabad-M Moth ckt-I charge at 07:25 Hrs 220 KV RKP-VKJ ckt-I charge at 07:37 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 KV Tunglakabad-RKP-II charge at 07:36 Hrs 220 KV Tunglakabad-M Moth ckt-I charge at 07:25 Hrs 220 KV RKP-VKJ ckt-I charge at 07:37 Hrs Regards, Delhi SLDC 20231113030350 2023/11/13 03:03:50 1) Name of the substation and Time: 220kV RKP, 2:22 Hrs ( revised ) 2) Name of element tripped/restored: 220kV V/ Kunj-I 3) Relay Annunciation: Diff R and B ph zone-I and II 86AB, O/V 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: B/C put on 2:23 at V/Kunj end 6) Any other relevant information: Approx. 17 MW load affected Regards, Delhi SLDC 20231113025559 2023/11/13 02:56:01 1) Name of the substation and Time: 220kV RKP, 2:22 Hrs 2) Name of element tripped/restored: 220kV V/ Kunj-I 3) Relay Annunciation: Over voltage 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: B/C put on 2:23 at V/Kunj end 6) Any other relevant information: Approx. 17 MW load affected Regards, Delhi SLDC 20231113024942 2023/11/13 02:49:43 1) Name of the substation and Time: 220kV TKD, 1:59 Hrs 2) Name of element tripped/restored: 220kV M/Moth Ckt-I and 220kV RKP Ck-II 3) Relay Annunciation: Over voltage relay operated on both ckt 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 2:20 B/C put on and 220kV TKD-I put off at 220kN M/ Moth end 6) Any other relevant information: Approx. 15 MW load affected at 220kN M/ Moth end Regards, Delhi SLDC 20231112193021 2023/11/12 19:30:22 1) Name of the substation and Time: At 220KV IP At-19:20 Hrs 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I Charged and load taken 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 100MVA-I along with 33KV I/C-I Charged and load taken System normal At 19:20 Hrs Regards, Delhi SLDC 20231112135526 2023/11/12 13:55:27 1) Name of the substation and Time: 220 kv IP @13.38 2) Name of element tripped/restored: 100 MVA TR-1 TRP 3) Relay Annunciation: DIFF TRIP.RYB PH,86,HV REF 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NO LOAD EFFETED 6) Any other relevant information: NA Regards, Delhi SLDC 20231112082438 2023/11/12 08:24:39 1) Name of the substation and Time: At Tughlakabad(00:36hrs) 2) Name of element tripped/restored: 160MVA-I 3) Relay Annunciation: gen. trip, RYB phase, differential trip. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: No load was affected. 6) Any other relevant information: none. Regards, Delhi SLDC 20231111233748 2023/11/11 23:37:49 1) Name of the substation and Time: At Mehrauli(21:47hrs) 2) Name of element tripped/restored: 220KV Tughlakabad ckt-I 3) Relay Annunciation: B phase(RYB), 11.4KA, differential protection. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: Load was taken by other paralell ckt. 6) Any other relevant information: none. Regards, Delhi SLDC 20231111155732 2023/11/11 15:57:33 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) 220 kv SOW REAL TIME DATA NOT UPDATING 2) 220 KV MUNDUKA,220 KV NARELA,KANJHAWALA,rkpuram,Gopal pur,Kashmirigate, SCADA PHONE NOTWORKING 3) 220 KV MUNDUKA,220 KV NARELA,KANJHAWALA,rkpuram,Gopal pur,Kashmirigate, SCADA PHONE NOTWORKING 4) 220 kV PPG RELA TIME DATA NOT UPDATING 5) NA 6) NA Regards, Delhi SLDC 20231111075254 2023/11/11 07:52:55 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 04:09Hrs 20MVA T/F-2 tripped on Buchholz relay. Load affected was 1.5MW. At 04:40Hrs load normalised through 11KV Bus Section. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231111074940 2023/11/11 07:49:41 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: At 01:51Hrs 220KV Mandaula ckt-I tripped on Z-1 R-phase 7.9km If=8.5KA. No load was affected. CVT coming at SOW end. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231111074445 2023/11/11 07:44:45 1) Name of the substation and Time: Rohini-1 2) Name of element tripped/restored: At 06:50Hrs 220KV Bawana ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231111074310 2023/11/11 07:43:12 1) Name of the substation and Time: Rohini-1 2) Name of element tripped/restored: At 01:03Hrs supply failed of 220KV Bawana ckt-I. Relay at Bawana end were Z-2 9.2km R-phase If=11.4KA. Load affected was 40MW. At 01:17Hrs 220KV B/C closed and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231110040858 2023/11/10 04:08:59 1) Name of the substation and Time: 220kV GZP, 03.12 Hrs 2) Name of element tripped/restored: 66kV I/C-I,II,III, B/C 3) Relay Annunciation: On 66kV I/C-I- No Indication, On 66kV I/C-II O/C, RB -Ph and any trip, On 66kV I/C-III O/C, RYB -Ph, E/F On 66kV B/C-O/C, R -Ph and any trip, 4) Details of physically damaged equipment: 66kV I/C-II,III could not checked due Heavy Rain 5) Immediate corrective/system normalization steps performed: 66kV-I/C-I and B/C put on at 3.31 Hrs and 66kV Kondly-1 and 66kV V.Vhr-II charged put on at 03.34 hrs 6) Any other relevant information: Approx. load affected 31 MW (03:12 to 03:34 Hrs) Regards, Delhi SLDC 20231108155119 2023/11/08 15:51:20 1) Name of the substation and Time: 220kV Narela, 15:06 Hrs 2) Name of element tripped/restored: 220kV Panipat Ckt-III, restored 15:06 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20231108154851 2023/11/08 15:48:51 1) Name of the substation and Time: 220 KV Gopal Pur At 15:05Hrs 2) Name of element tripped/restored: 220 KV Mandola ckt -II Charged at 15:05 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 KV Mandola ckt -II Charged at 15:05 Hrs Regards, Delhi SLDC 20231108131523 2023/11/08 13:15:24 1) Name of the substation and Time: 220kV Narela, 12:11 Hrs 2) Name of element tripped/restored: 220kV Panipat-III 3) Relay Annunciation: Autoreclosed blocked, 86T 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load shifted on both 220 Panipat-I and II Regards, Delhi SLDC 20231108115003 2023/11/08 11:50:04 1) Name of the substation and Time: 220kV Gopalpur S/stn at 11:20 Hrs 2) Name of element tripped/restored: 220kV Mandola Ckt-II 3) Relay Annunciation: B phase, 86 operated, Distance 19.7kM at 220kV Gopalpur end. B Phase Trip, Distance-11.23kM, Fault current -9kAmp at Mandola End 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Load taken on 220kV Wazirabad Ckt-I at11:21 Hrs. 6) Any other relevant information: Load affected approx.90MW Regards, Delhi SLDC 20231106055206 2023/11/06 05:52:07 1) Name of the substation and Time: 220KV RPH, 05:44Hrs. 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231106045025 2023/11/06 04:50:28 1) Name of the substation and Time: 220KV RPH, 04:10Hrs. 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I 3) Relay Annunciation: R-Phase Trip, B-Phase Trip, 86, 186A and 186X on 100MVA-I and 86 on 33KV I/C-I 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231105115316 2023/11/05 11:53:17 1) Name of the substation and Time: 220kV PPK-I @ 11:28 Hrs 2) Name of element tripped/restored: 220kV Dwarka Ckt-II Tripped 3) Relay Annunciation: R -Ph. , differential, distance - 2.6km 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Load taken on Bamnauli-II @ 11:32 Hrs. 6) Any other relevant information: Load was 59MW on tripped ckt Regards, Delhi SLDC 20231102012109 2023/11/02 01:21:10 1) Name of the substation and Time: AT 00:47 HRS Park Street 2) Name of element tripped/restored: 33KV I/C No-2 3) Relay Annunciation: O/C,E/F R Phase,86 4) Details of physically damaged equipment: Animal found electrocuted and R ph bus flash observed 5) Immediate corrective/system normalization steps performed: 01:09 33KV I/C No-2 enrgised and hence system becomes normal 6) Any other relevant information: Aprox 15 MW load affected .System is normal Regards, Delhi SLDC 20231101232857 2023/11/01 23:28:58 1) Name of the substation and Time: At 22:56 HRS 220KV GOPALPUR 2) Name of element tripped/restored: 160MVA-4 with 66KV I/C No-1 GIS 3) Relay Annunciation: o/c,E/F,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: AT 23:10 HRS 66KV Buscoupler closed 6) Any other relevant information: Approx 20MW Load affected Regards, Delhi SLDC 20231101212314 2023/11/01 21:23:14 1) Name of the substation and Time: AT 20:41 HRS 220KV GOPALPUR 2) Name of element tripped/restored: 160MVA TX energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 21:15 HRS Load taken on 160MVA Tx system is normal Regards, Delhi SLDC 20231101181803 2023/11/01 18:18:03 1) Name of the substation and Time: At 17:39 HRS 220KV Gopalpur 2) Name of element tripped/restored: 160MVA Transformer with 66KV I/C-I GIS 3) Relay Annunciation: o/c,E/f,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 17:52 HRS 66KV Buscoupler closed and system Normalised 6) Any other relevant information: Approx 27MW Load affected Regards, Delhi SLDC 20231101155643 2023/11/01 15:56:44 1) Name of the substation and Time: At Sarita Vihar(12:29) 2) Name of element tripped/restored: 220KV Pragati ckt 3) Relay Annunciation: Z-1, B phase, 3.8KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: No load was affected. 6) Any other relevant information: Delay in restoration message due to Server issues. Regards, Delhi SLDC 20231101104812 2023/11/01 10:48:13 1) Name of the substation and Time: At Sarita Vihar(10:21hrs) 2) Name of element tripped/restored: 220KV Pragati ckt. 3) Relay Annunciation: D/P, 3.8KM, B phase(RYB). 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: No load was affected. 6) Any other relevant information: none. Regards, Delhi SLDC 20231029080546 2023/10/29 08:05:46 1) Name of the substation and Time: 220 KV GOPAL PUR @07.40 2) Name of element tripped/restored: 100 MVA TR-3 3) Relay Annunciation: NO INDICATION 4) Details of physically damaged equipment: HEAVY NOISE OBSERVED IN THE YARD. fire noticed in the cable trench 5) Immediate corrective/system normalization steps performed: informed NDPL to shift the load 6) Any other relevant information: na Regards, Delhi SLDC 20231028131045 2023/10/28 13:10:46 1) Name of the substation and Time: BTPS @ 13:05 Hrs 2) Name of element tripped/restored: 220kV TGK-1 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231028123651 2023/10/28 12:36:51 1) Name of the substation and Time: 220kV BTPS @ 12:13Hrs 2) Name of element tripped/restored: 220kV Tughlakabad Ckt-1 tripped 3) Relay Annunciation: At BTPS end: RYB Trip, Zone-II, 5.754km, IC= 7.504kA, Gr A and B Operated. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: Load came on Ckt 2. Regards, Delhi SLDC 20231027135704 2023/10/27 13:57:05 1) Name of the substation and Time: 400KV Bawana, 13:50Hrs. 2) Name of element tripped/restored: 220KV Kanjhawala-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231027123859 2023/10/27 12:39:00 1) Name of the substation and Time: 220 kV kanjhawala @12.01 hrs 2) Name of element tripped/restored: 220 KB NAJAFGARH CKT Y PH LA BLAST 3) Relay Annunciation: NO RELAY OPERAED 4) Details of physically damaged equipment: 220 KB NAJAFGARH CKT LA BLAST 5) Immediate corrective/system normalization steps performed: informed TPDDL to shift/divert load to other grid 6) Any other relevant information: NA Regards, Delhi SLDC 20231027122500 2023/10/27 12:25:01 1) Name of the substation and Time: 400 kv Bawana @ 12.01 2) Name of element tripped/restored: 220 kv Khanjahwala ckt-2 3) Relay Annunciation: Z2,Y PH,86, ia=638.4 amp, ib= 5.488ka amp ic= 217.7amp 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20231026150239 2023/10/26 15:02:46 1) Name of the substation and Time: 220KV Mehrauli, 14:59HRs 2) Name of element tripped/restored: 66kV I/c No 2 charged at 14:48Hrs, and 66kV I/c No4 charged at 14:57HRs 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231026142912 2023/10/26 14:29:14 1) Name of the substation and Time: 220kV Mehrauli, at 13:50HRs 2) Name of element tripped/restored: 66kV I/c No 2 and 66kV I/c 4 and 66kV Vasant Kunj D2 3) Relay Annunciation: I/C-2: Any Trip O/c Ra nd Y phase, O/C stage 1 I/C4: Any Trip R-and Y-Phase O/c Stage 1, E/F Stage 1 66kV Vasant Kunj D-2: Any Trip, R-Ph, O/c stage 1, E/f stage-1 4) Details of physically damaged equipment: 66kV Vasant Kunj D2 Ckt-R and Y-Phase CB pole damage. 5) Immediate corrective/system normalization steps performed: S/stn staff is informed to check and give clearance 6) Any other relevant information: No load affected Load normalize through 66kV Bus coupler at 13:59 Regards, Delhi SLDC 20231023111235 2023/10/23 11:12:36 1) Name of the substation and Time: At 10:05 HRS 400KV Bawana 2) Name of element tripped/restored: 220KV DSIIDC BWN-I 220KV BusCoupler 220KV Bus section 220KV I/C-5 3) Relay Annunciation: Bus Bar Operate on 220KV DSIIDC BWN-I 220KV BusCoupler 220KV Bus section 220KV I/C-5 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 10:07 HRS 220KV DSIIDC BWN Substation load shifted /Taken on Narela CKT-I and II 6) Any other relevant information: Load affected approx 140MW AT 10:49-10:54 Energized 220KV DSIIDC BWN-I 220KV BusCoupler 220KV I/C-5 System is normal Regards, Delhi SLDC 20231021102859 2023/10/21 10:29:00 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: At 10:24Hrs 220KV Mandaula ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231021084817 2023/10/21 08:48:18 1) Name of the substation and Time: 220 kv gopal pur @8.39 hrs 2) Name of element tripped/restored: 220 kv mandola ckt-1 3) Relay Annunciation: b ph,diff optd,CVT appearing 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231018193608 2023/10/18 19:36:10 1) Name of the substation and Time: At Rajghat(18:30hrs) 2) Name of element tripped/restored: 100MVA-I(220/33)KV 3) Relay Annunciation: O/C,E/F trip. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: none. 6) Any other relevant information: none. Regards, Delhi SLDC 20231018171836 2023/10/18 17:18:38 1) Name of the substation and Time: 220KV RPH, 16:52Hrs. 2) Name of element tripped/restored: 100MVA-I along with 33KV I/C-I tripped 3) Relay Annunciation: 186 on 100MVA-I and O/C, E/F and OLTC on 33KV I/C-I 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Monkey electrocuted on 33KV I/C-I Regards, Delhi SLDC 20231017070040 2023/10/17 07:00:41 1) Name of the substation and Time: At 220KV Narela:-06:12 Hrs 2) Name of element tripped/restored: 220kV Panipat-II charged at 06:12 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220kV Panipat-II charged at 06:12 Hrs Regards, Delhi SLDC 20231017061850 2023/10/17 06:18:51 1) Name of the substation and Time: 220kV Narela,05:15 Hrs 2) Name of element tripped/restored: 220kV Panipat-II 3) Relay Annunciation: Zone-1, 186x, General trip and CVT appeared at Narela end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 6:12 Hrs Charged 6) Any other relevant information: No load affected Regards, Delhi SLDC 20231017021208 2023/10/17 02:12:09 1) Name of the substation and Time: 400 KV Bamnauli At 02:04 Hrs 2) Name of element tripped/restored: 400 KV Tuglakabad ckt-1 charged at 02:04 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 400 KV Tuglakabad ckt-1 charged at 02:04 Hrs Regards, Delhi SLDC 20231017010222 2023/10/17 01:02:24 1) Name of the substation and Time: At00:45 HRS 400KV Bamnauli 2) Name of element tripped/restored: 400TUGlajabad-1 3) Relay Annunciation: Trip -C,Zone Z-1 Fault Location 52.59 KM,Ia 5.83KA VT fuse fail 186A and B CVT available 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20231017002246 2023/10/17 00:22:47 1) Name of the substation and Time: At 23:57 HRS 400KV Harsh Vihar 2) Name of element tripped/restored: 315MVA-ICT-3 with 220KV I/C-3 3) Relay Annunciation: Buchholz trip 86-I and II 22KV I/C side DC-I fail 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: No Load affected 6) Any other relevant information: No Load affected Regards, Delhi SLDC 20231016162512 2023/10/16 16:25:12 1) Name of the substation and Time: At Bawana(15:49hrs) 2) Name of element tripped/restored: 220KV Rohini-I cktI. 3) Relay Annunciation: 86 ABC. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Rohini I ckt-I. oad normalized. 6) Any other relevant information: none. Regards, Delhi SLDC 20231016162321 2023/10/16 16:23:22 1) Name of the substation and Time: At Mundka(15:06hrs) 2) Name of element tripped/restored: 220KV Najafgarh ckt. 3) Relay Annunciation: 86RYB, D/P, 5.6KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Ckt was on NO load. 6) Any other relevant information: none. Regards, Delhi SLDC 20231016162002 2023/10/16 16:20:03 1) Name of the substation and Time: At Bawana(13:58hrs) 2) Name of element tripped/restored: 220KV Rohini-I ckt-I. 3) Relay Annunciation: 86, ABC. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Rohini-I end. 6) Any other relevant information: none. Regards, Delhi SLDC 20231016133913 2023/10/16 13:39:13 1) Name of the substation and Time: At Gopaplpur(13:18hrs) 2) Name of element tripped/restored: 160MVA-I(220/66)KV 3) Relay Annunciation: O/C, E/F tripped. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: 66KV B/C put ON. 6) Any other relevant information: none. Regards, Delhi SLDC 20231016010558 2023/10/16 01:05:59 1) Name of the substation and Time: 400KV Bamnauli, 00:34Hrs. 2) Name of element tripped/restored: 220KV PPK-III Ckt.-II tripped (charged at no-load) 3) Relay Annunciation: 186A, 186B and Pole Discripancy 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231015123131 2023/10/15 12:31:56 1) Name of the substation and Time: AT 12:25 HRS 220KV SUBZIMANDI 2) Name of element tripped/restored: 100MVA-II Energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 100MVA-II Energized system is normal Regards, Delhi SLDC 20231015095153 2023/10/15 09:51:53 1) Name of the substation and Time: 220kV Parkstreet At 09:43 Hrs 2) Name of element tripped/restored: 33kV Incomer-II Charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 33kV Incomer-II Charged Regards, Delhi SLDC 20231015093655 2023/10/15 09:36:55 1) Name of the substation and Time: 220kV Parkstreet @ 08:51 Hrs 2) Name of element tripped/restored: 33kV Incomer-II tripped with 33kV Faiz Road-II due to Monkey falling 3) Relay Annunciation: 33kV I/C- II: Any trip , O/C-Bph., EF ST-1 33kV Faiz Rd-II:- Zone-1, 186X, Y-Ph.Trip 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Throughly Yard Inspection and Normalization 6) Any other relevant information: Load on incomer-II was 38MW. Regards, Delhi SLDC 20231014222317 2023/10/14 22:23:18 1) Name of the substation and Time: 220kV Subjimandi @ 22:01Hrs 2) Name of element tripped/restored: 100MVA Tx-II tripped. 3) Relay Annunciation: Differential ABC, LV REF, 186 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: Buscoupler put ON 6) Any other relevant information: Load on Transformer was 28MW Regards, Delhi SLDC 20231014185636 2023/10/14 18:56:37 1) Name of the substation and Time: Gazipur 2) Name of element tripped/restored: At 18:40Hrs 220KV Maharani Bagh ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231014161746 2023/10/14 16:17:47 1) Name of the substation and Time: At 15:55 Hrs,220 KV Gazi Pur 2) Name of element tripped/restored: 220 KV Maharani bhagh Ckt-I 3) Relay Annunciation: R,Y, and B ph-Trip,Zone-I,86 Gazipur end , B ph Trip,Zone-II,Distt.Pickup-L3-E,F/Located 9.6 KM,F/Current-15.37 KA Bph.Maharani bhagh end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: NO load affected Regards, Delhi SLDC 20231014161721 2023/10/14 16:17:46 1) Name of the substation and Time: At 15:55 Hrs,220 KV Gazi Pur 2) Name of element tripped/restored: 220 KV Maharani bhagh Ckt-I 3) Relay Annunciation: R,Y, and B ph-Trip,Zone-I,86 Gazipur end , B ph Trip,Zone-II,Distt.Pickup-L3-E,F/Located 9.6 KM,F/Current-15.37 KA Bph.Maharani bhagh end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: NO load affected Regards, Delhi SLDC 20231013140910 2023/10/13 14:09:15 1) Name of the substation and Time: 220kV DSIDC 2) Name of element tripped/restored: 220kV Bawana Ckt-II Restored @ 14:05 Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231013120831 2023/10/13 12:08:32 1) Name of the substation and Time: 220kV DSIDC @ 11:40Hrs 2) Name of element tripped/restored: 220kV Bawana Ckt- II tripped . Relay at DSIDC end : Zone-II, 86RYB. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Load Taken on Narela Ckt-I @ 11:41 Hrs 6) Any other relevant information: Load on ckt was 72MW. Regards, Delhi SLDC 20231013074537 2023/10/13 07:45:38 1) Name of the substation and Time: 220 KV GOPAL PUR @ 7.17 2) Name of element tripped/restored: 100 MVA TR-3 3) Relay Annunciation: DIF TRIP,86 ,LV TRIP 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 7.19 BUS COUPLER CLOSED . 6) Any other relevant information: NA Regards, Delhi SLDC 20231010122713 2023/10/10 12:27:18 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) 220 kv RKP 220 KV KGT 220 KV KNJ SCADA POWER GRID HOT LINE PHONE NOT WORKING/ Unable to contact for real time operations 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20231008140248 2023/10/08 14:02:49 1) Name of the substation and Time: Kashmiri Gate 2) Name of element tripped/restored: At 13:59Hrs 220KV SOW ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231008124309 2023/10/08 12:43:10 1) Name of the substation and Time: Kashmiri Gate 2) Name of element tripped/restored: At 11:25Hrs 220KV SOW ckt-II tripped. Load affected was approx 13MW. At 11:26Hrs 220KV B/C closed and load normalised. 3) Relay Annunciation: Relay at Kashmiri Gate are R-phase differential. Relay at SOW end are R-phase Z-1 4.1km If= 15.7KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20231006114256 2023/10/06 11:42:57 1) Name of the substation and Time: 220KV Sarita Vihar, 02:54Hrs. 2) Name of element tripped/restored: 100MVA-III along with 66KV I/C-III charged at 11:30 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 100MVA-III along with 66KV I/C-III charged at 11:30 Hrs , system nolmal position Regards, Delhi SLDC 20231006030500 2023/10/06 03:05:01 1) Name of the substation and Time: 220KV Sarita Vihar, 02:54Hrs. 2) Name of element tripped/restored: 100MVA-III along with 66KV I/C-III 3) Relay Annunciation: CB TC 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20231004193236 2023/10/04 19:32:37 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) SCADA TELEPHONES NOT WORKING ON BELOW 220 KV STATIONS 220 KV KNJ 220 KV SMB 220 KV ROHINI-1 220 KV RKP 220 KV SGTN 2) NA 3) NA 4) NA 5) NA 6) NA Regards, Delhi SLDC 20231004053720 2023/10/04 05:37:23 1) Name of the substation and Time: 220KVNarela :-at 03:33 Hrs 2) Name of element tripped/restored: 220 KV Panipat ckt-I charge at 05:29 hrs 3) Relay Annunciation: Auto reclosed C-Ph, Zone-1,Fault location -3.388kM, Fault current-Ic-6.7KA, CVT appeared at Narela end ,auto reclose at panipat end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: no load affected Regards, Delhi SLDC 20231001172520 2023/10/01 17:25:22 1) Name of the substation and Time: AT MEHRAULI(16:48HRS) 2) Name of element tripped/restored: 220KV DIAL-1 3) Relay Annunciation: A-N, Z-1, D/P, 4.327KM. 4) Details of physically damaged equipment: NONE. 5) Immediate corrective/system normalization steps performed: NONE. 6) Any other relevant information: NONE. Regards, Delhi SLDC 20231001140316 2023/10/01 14:03:17 1) Name of the substation and Time: At Mehrauli(13:10hrs) 2) Name of element tripped/restored: 220 DIAL ckt-I. 3) Relay Annunciation: D/P, Z-1,A-N,act grp-I, 4.327KM, 12.3KA fault current. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: Load taken by other parallel ckt. 6) Any other relevant information: None. Regards, Delhi SLDC 20230930212640 2023/09/30 21:26:41 1) Name of the substation and Time: At 20:25 HRS 220KV Tramacentre 2) Name of element tripped/restored: 33KV I/C No-II with 33KV Buscoupler and 33KV feeders Energised at 20:25 to 21:13 HRS 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 33KV I/C No-II with 33KV Buscoupler and 33KV feeders Energised at 20:25 to 21:13 HRS Regards, Delhi SLDC 20230930195326 2023/09/30 19:53:27 1) Name of the substation and Time: AT 19:48 HRS 220KV Sarita Vihar 2) Name of element tripped/restored: 220KV Pragati- Sarivihar CKT Energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV Pragati- Sarivihar CKT Energized System is normal Regards, Delhi SLDC 20230930183352 2023/09/30 18:33:53 1) Name of the substation and Time: 220kV Kanjhalawala, 22:09 Dt-29.09.2023 2) Name of element tripped/restored: 220kV Bawana Ckt-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 18:22 Hrs Dt. 30.09.2023 Charged 6) Any other relevant information: - Regards, Delhi SLDC 20230930183122 2023/09/30 18:31:23 1) Name of the substation and Time: 220kV Pragati, 18:12 Hrs 2) Name of element tripped/restored: 220kV SVR 3) Relay Annunciation: Relay operated at Pragati end:-Start Ph-B-C, Trip Ph-B-C, dist-5.278kM, Zone-1,Ia-61.32A, Ib-9.91KA, Ic-9.65KA, In-276.3A, Relay operated at SVR end:- Distance prot. A/R lockout, Ph-Y and B trip, Zone-1, Dist-7.277kM, Ia-60.2A, Ib-4.99KA, Ic-4.94KA, In-29.99A, 186A and B, 86 B and C 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20230930085014 2023/09/30 08:50:15 1) Name of the substation and Time: 220KV Trauma Centre, 06:40Hrs.-06:46hRS. 2) Name of element tripped/restored: 33KV Trauma Centre-I, 33KV Trauma Centre-II, 33KV Safdarganj, 33KV AIIMS-I, 33KV AIIMS-II and 33KV AIIMS-III put off 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 33KV AIIMS-I, II and III charged at 07:10Hrs., 33KV Trauma Centre-I and II charged at 07:14Hrs. and 33KV Safdarganj charged at 07:14Hrs. 6) Any other relevant information: 33KV Trauma Centre-I, 33KV Trauma Centre-II, 33KV Safdarganj, 33KV AIIMS-I, 33KV AIIMS-II and 33KV AIIMS-III put off by operation staff of Trauma Centre without any instruction/consent of S/O Minto Road Regards, Delhi SLDC 20230930013851 2023/09/30 01:38:52 1) Name of the substation and Time: 220KV IP, 01:27Hrs. 2) Name of element tripped/restored: 220KV PPG-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230930013646 2023/09/30 01:36:47 1) Name of the substation and Time: 220KV IP, 00:55Hrs. 2) Name of element tripped/restored: 220KV PPG-I tripped at IP end only 3) Relay Annunciation: Without any indication 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230929224837 2023/09/29 22:48:38 1) Name of the substation and Time: 400KV Bawana, 22:09Hrs. 2) Name of element tripped/restored: 220KV Kanjhawala-II tripped 3) Relay Annunciation: 86 at Bawana end and R-Phase, Y-Phase, TC1, TC2 and Pole Discrepancy operated at Kanjhawala end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Najafgarh charged at 22:09Hrs. and supply restored 6) Any other relevant information: Nil Regards, Delhi SLDC 20230929152351 2023/09/29 15:23:52 1) Name of the substation and Time: 220 KV Okhla:- AT 14:42 Hrs 2) Name of element tripped/restored: 33 KV I/C -III and 33 KV I/C -IV 3) Relay Annunciation: 33 KV I/C-III-O/C,R,Y, and B Ph.,86 33 KV I/C-IV-O/C,R,Y, and B Ph.,86 4) Details of physically damaged equipment: 33KV Okhla ph-11 ckt-I CB Demage/blasted 5) Immediate corrective/system normalization steps performed: Load change over by BRPL ,33 KV I/C -III and VI Charge At 14:52 Hrs System normal , expect 33KV Okhla ph-11 ckt-I 6) Any other relevant information: Approx . load Affect 36 MW Regards, Delhi SLDC 20230929091251 2023/09/29 09:12:52 1) Name of the substation and Time: 220kV Narela @ 09:09 Hrs 2) Name of element tripped/restored: 220kV Panipat -I and II charged 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230929082330 2023/09/29 08:23:31 1) Name of the substation and Time: 220kV Narela@7:47Hrs 2) Name of element tripped/restored: 220kV Panipat-II auto-reclosed from Panipat end. Relay at Narela end: Y-Ph. Zone-1. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230929074022 2023/09/29 07:40:23 1) Name of the substation and Time: 220kV Narela @ 07:22Hrs 2) Name of element tripped/restored: 220kV Panipat -I Auto-reclosed at Panipat End.Relay at Narela end: B-Ph. , Zone-1. (Not auto-reclosed at Narela end) 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230925235549 2023/09/25 23:55:50 1) Name of the substation and Time: 400 KV Mundka : At 23:48 Hrs 2) Name of element tripped/restored: 220 KV Mundka -Kanjhawala Ckt charged at 23:48 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 KV Mundka -Kanjhawala Ckt charged at 23:48 Hrs Regards, Delhi SLDC 20230925215706 2023/09/25 21:57:07 1) Name of the substation and Time: 220 KV Kanjhawala At 21:37 Hrs 2) Name of element tripped/restored: 220 KV Najafgarh-Kanjhawala Ckt Charged at 21:37 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 KV Najafgarh-Kanjhawala Ckt Charged at 21:37 Hrs Regards, Delhi SLDC 20230925163607 2023/09/25 16:36:07 1) Name of the substation and Time: Corrigendum: 220kV Preet vihar, 13:27 Hours 2) Name of element tripped/restored: 220kV Bus Bar Operated, all 220kV Feeders and 100MVA Transformer tripped 3) Relay Annunciation: 220kV Bus Bar 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Load shifted to 220kV Gazipur at 13:30 HRs, further 220kV Bus coupler at Pragti was made on at 13:34, hence load shared by other grids. 6) Any other relevant information: 220kV Harsh vihar ckt 1 and 2 charged at 13:37 and 13:38 HRs, at 13:41 HRs PPG ckt 1 and 2 charged, 100MVA Tr 1 charged 13:39HRs and 100MVA Tr 2 charged 13:40Hrs Load shifted by Discoms and DTL immidiately. Regards, Delhi SLDC 20230925152616 2023/09/25 15:26:17 1) Name of the substation and Time: 220KV Najafgarh, 15:00Hrs. 2) Name of element tripped/restored: 220KV Kanjhawala tripped 3) Relay Annunciation: RYB Phase, Zone-2 and 3 and Fault Location - 14.49Km 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230925151205 2023/09/25 15:12:06 1) Name of the substation and Time: 400KV Mundka, 13:56Hrs. 2) Name of element tripped/restored: 220KV Kanjhawala tripped 3) Relay Annunciation: Y-Phase, B-Phase, Zone-1, Zone-2, Zone-3, Fault Location - 6.384Km and Fault Current, Y-Phase - 1KA and B-Phase - 18.56KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230925150626 2023/09/25 15:06:26 1) Name of the substation and Time: 220KV Kanjhawala, 14:38Hrs. 2) Name of element tripped/restored: 220KV Najafgarh restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230925150226 2023/09/25 15:02:27 1) Name of the substation and Time: 220KV Kanjhawala, 14:00Hrs. 2) Name of element tripped/restored: 220KV Najafgarh tripped 3) Relay Annunciation: Y-Phase, B-Phase, Zone-2 and Fault Location - 12.94Km 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230925143424 2023/09/25 14:34:25 1) Name of the substation and Time: 220kV Preet Vihar, 13:30 2) Name of element tripped/restored: 220 BUS Bar operated, resulting tripping of all 220kV Feeders and Transformers 3) Relay Annunciation: 220kV Bus Bar operated 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Load shifted to other 220kV Feeders 6) Any other relevant information: 220kV Preet Vihar 220kV Feeders were restored at 13:45Hrs, tripping occurred due to working of OEM at site without informing SO, SLDC. Regards, Delhi SLDC 20230924202159 2023/09/24 20:22:00 1) Name of the substation and Time: At Lodi Road(18:18hrs) 2) Name of element tripped/restored: 100MVA-I and III, 16MVA-IV. 3) Relay Annunciation: bus bar protection. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: 100MVA-I was already under S/D. Regards, Delhi SLDC 20230924201921 2023/09/24 20:19:22 1) Name of the substation and Time: At Lodi Road(18:06hrs) 2) Name of element tripped/restored: 100MVA-II and III, 16MVA-IV. 3) Relay Annunciation: bus bar protection operated. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: 100MVA-I was already under S/D. Regards, Delhi SLDC 20230923133058 2023/09/23 13:30:59 1) Name of the substation and Time: At Harsh Vihar(12:59hrs) 2) Name of element tripped/restored: 315MVA ICT-III. 3) Relay Annunciation: WTI, 86. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other ckts. 6) Any other relevant information: Rainy weather outside. Regards, Delhi SLDC 20230922183320 2023/09/22 18:33:21 1) Name of the substation and Time: 220 KV Narela ,18:00 Hrs 2) Name of element tripped/restored: 220 Panipat ckt-I charged at 18:00 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 Panipat ckt-I charged at 18:00 Hrs Regards, Delhi SLDC 20230922172259 2023/09/22 17:23:01 1) Name of the substation and Time: At Rajghat(16:00hrs) 2) Name of element tripped/restored: 33KV I/C-II. 3) Relay Annunciation: O/C and E/F. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230922172049 2023/09/22 17:20:50 1) Name of the substation and Time: At Rajghat(15:05hrs) 2) Name of element tripped/restored: 33KV I/C-II. 3) Relay Annunciation: O/C and E/F. 4) Details of physically damaged equipment: Y and B phase pole of 33KV GB Pant damaged. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: B phase pole of 33KV Bay 12 also damaged. Regards, Delhi SLDC 20230922152510 2023/09/22 15:25:12 1) Name of the substation and Time: At Narela(13:37hrs) 2) Name of element tripped/restored: 220KV Mandola ckt-I. 3) Relay Annunciation: A/R at Narela end. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: Load taken on 220KV DSIIDC ckts. 6) Any other relevant information: ckt tripped at Mandola end and Narela-Mandola ckt-II is under S/D. Regards, Delhi SLDC 20230922152107 2023/09/22 15:21:08 1) Name of the substation and Time: At Narela(13:12hrs) 2) Name of element tripped/restored: 220KV Panipat ckt-I. 3) Relay Annunciation: R phase triping, 186. 4) Details of physically damaged equipment: R phase jumper of wave trap at Panipat end broken. 5) Immediate corrective/system normalization steps performed: Load taken by other parallel ckt. 6) Any other relevant information: none. Regards, Delhi SLDC 20230921141511 2023/09/21 14:15:11 1) Name of the substation and Time: 220 KV Narela ,at 14:08 Hrs 2) Name of element tripped/restored: 220 KV DSIDC Ckt-II restored at 14:08 hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 KV DSIDC Ckt-II restored at 14:08 hrs Regards, Delhi SLDC 20230921095236 2023/09/21 09:52:37 1) Name of the substation and Time: 220 KV Narala at 09:31 Hrs 2) Name of element tripped/restored: 220 KV DSIDC ckt-II 3) Relay Annunciation: Zone-I, Ph-C, F/L 1.305KM, Ia-4.52A,Ib-4.48A,Ic-99.69A ,86 C , Start ph-CN ,Activ gr-I 220 KV CVT Disappear at 220 KV DSIDC end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load Effected Regards, Delhi SLDC 20230921092213 2023/09/21 09:22:14 1) Name of the substation and Time: 220kV Narela @ 09:10Hrs 2) Name of element tripped/restored: 220kV Rohtak Road-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230921065404 2023/09/21 06:54:06 1) Name of the substation and Time: 220kV Narela @ 03:55Hrs 2) Name of element tripped/restored: 220KV Rohtak Road -I tripped at both end. 3) Relay Annunciation: Relay at Narela end: ABC Ph. Trip, Zone-1, 2.765kM , I Fault (B Ph.) = 7.62KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230920173313 2023/09/20 17:33:14 1) Name of the substation and Time: 220kV Narela @ 17:08Hrs 2) Name of element tripped/restored: 220kV DSIDC -II restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230920150848 2023/09/20 15:08:49 1) Name of the substation and Time: 220kV Narela, 14:54 Hrs 2) Name of element tripped/restored: 220kV DSIDC Ckt-II 3) Relay Annunciation: Zone-I, Fault Loaction- 320 m, Ia-4.22A, Ib-4.84A, Ic-23.56A ( CVT disappeared DSIDC end) 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: No load affected 6) Any other relevant information: - Regards, Delhi SLDC 20230920131048 2023/09/20 13:10:49 1) Name of the substation and Time: 220 KV Bawana , 13:02 Hrs 2) Name of element tripped/restored: 220 KV Shalimarg bhag ckt-I Restored at 13:02 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 KV Shalimarg bhag ckt-I Restored at 13:02 Hrs Regards, Delhi SLDC 20230920120227 2023/09/20 12:02:28 1) Name of the substation and Time: 220kV Bawana, 11:25 Hrs 2) Name of element tripped/restored: 220 SMB-I 3) Relay Annunciation: At Bawana:-R-ph trip, Zone-II, 86, Distance-10.3kM, F/C-Ia-10.3kA, Ib-399.7A,Ic-1.136kA, In-8.9KA. At SMB:- CVT disappeared only 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 11:30 Hrs B/C put on and load taken at 220kV RHN-I, Ckt-I and system normalized 6) Any other relevant information: Approx. load affected 103 MW Regards, Delhi SLDC 20230918183222 2023/09/18 18:32:23 1) Name of the substation and Time: 220 kv vasantkunj @18.28 2) Name of element tripped/restored: 66 kv i/c-1 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230918182316 2023/09/18 18:23:17 1) Name of the substation and Time: 220KV Vasant Kunj, 18:18Hrs. 2) Name of element tripped/restored: 100MVA-II along with 66KV I/C-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230918175438 2023/09/18 17:54:39 1) Name of the substation and Time: 220KV Vasant Kunj, 17:36Hrs. 2) Name of element tripped/restored: 66KV I/C-I tripped 3) Relay Annunciation: R-Phase, O/C and 86 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 66KV Bus-Coupler charged at 17:42HRS. and supply restored 6) Any other relevant information: Total load effected - 13MW for 6 Minutes Regards, Delhi SLDC 20230918164821 2023/09/18 16:48:22 1) Name of the substation and Time: Peeragarhi 2) Name of element tripped/restored: At 16:37Hrs 50MVAR reactor charged which was under breakdown since 18/08/2023. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230918085622 2023/09/18 08:56:23 1) Name of the substation and Time: At 08:18 HRS 220KV Parkstreet 2) Name of element tripped/restored: 220KV Parkstreet-Devnagar CKT Energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV Parkstreet-Devnagar CKT Energized Regards, Delhi SLDC 20230918054222 2023/09/18 05:42:23 1) Name of the substation and Time: 220kV Park Street ,04:31 Hrs 2) Name of element tripped/restored: 220kV Dav Nagar 3) Relay Annunciation: At P/ Street End:-O/C-,86,Ia-887 A, Ib-139 A, Ic-120A, In-420 A At 220kV Dav Nagar:- No tripping (Only CVT Disappeared) 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load has been changed over by Discom. 6) Any other relevant information: Approx .40 Mw affected Regards, Delhi SLDC 20230917082811 2023/09/17 08:28:11 1) Name of the substation and Time: At Vasant Kunj(07:00hrs) 2) Name of element tripped/restored: 100MVA-II(220/66KV) 3) Relay Annunciation: Bucholz trip, LLB, 30A. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other transformer. 6) Any other relevant information: Informed by Substation staff at 08:15hrs. Regards, Delhi SLDC 20230916130910 2023/09/16 13:09:11 1) Name of the substation and Time: 220 kv PPG @13.07 2) Name of element tripped/restored: 220 KV GEETA COLONY-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230916121444 2023/09/16 12:14:45 1) Name of the substation and Time: 220 kv ppg @ 14.01 2) Name of element tripped/restored: 220 kv geeta colony ckt-2 3) Relay Annunciation: y,b ph diss trip ,86 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: no load effected 6) Any other relevant information: inforned operation staff/mtc for line clearnce . Regards, Delhi SLDC 20230915233313 2023/09/15 23:33:14 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: At 21:34Hrs 66KV I/C-4 and 66KV B/C tripped on O/C. R-phase Bus-II jumper of 66KV I/C-4 got broken. Load affected was approx. 100MW. Discoms had shifted their load. At 22:50Hrs 66KV I/C-4 charged on 66KV Bus-I. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230915065103 2023/09/15 06:51:04 1) Name of the substation and Time: 220 KV Mehrauli:-01:18 hrs 2) Name of element tripped/restored: 66 KV I/C-III 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 66 KV I/C-III Charged at 01:18 hrs 6) Any other relevant information: - Regards, Delhi SLDC 20230914225249 2023/09/14 22:52:51 1) Name of the substation and Time: 220kV MLI, 20:18 Hrs 2) Name of element tripped/restored: 66kV I/C-I and III with broken of B-Ph bus-I jumper of 66kV I/C-III 3) Relay Annunciation: E/F on 66kV I/C-I and III 4) Details of physically damaged equipment: B-Ph bus-I jumper of 66kV I/C-III ( Broken) 5) Immediate corrective/system normalization steps performed: At 21:12 Hrs 66kV I/C-I charged after shifting bus isolator to Bus-II, At 21:13 Hrs DMRC Ckt-I charged after shifting bus isolator to Bus-II At 21:33 Hrs 20 MVA-I charged after shifting bus isolator to Bus-II 6) Any other relevant information: Load affected approx. 135 MW. Note:-66kV DMRC Ckt-II, 66kV C1 Vasant kunj and 66kV C.Dot Ckt-I could not be charged due to bus isolator problem during shifting from Bus-I to Bus-II. Regards, Delhi SLDC 20230914161205 2023/09/14 16:12:07 1) Name of the substation and Time: At Patparganj(15:42hrs) 2) Name of element tripped/restored: 220KV Geeta Colony-II. 3) Relay Annunciation: E/F, C-N, 86 RYB. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230914160959 2023/09/14 16:10:00 1) Name of the substation and Time: At Patparganj(15:30) 2) Name of element tripped/restored: 220KV Geeta colony ckt-II 3) Relay Annunciation: 86 RYB ,E/F, C-N ,11.94KA. 4) Details of physically damaged equipment: None. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230913131919 2023/09/13 13:19:20 1) Name of the substation and Time: 220kV DSIDC Bawana, 2) Name of element tripped/restored: 220kV Bawana 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 13:15 charged 6) Any other relevant information: - Regards, Delhi SLDC 20230913121711 2023/09/13 12:17:12 1) Name of the substation and Time: 220kV DSIDC Bawana , 11:30 Hrs. 2) Name of element tripped/restored: 220kV Bawana-I 3) Relay Annunciation: 220kV DSIDC End:-Distance prot, R-Ph zone-I. 220kV Bawana End:- R,Y and B-Ph trip, Zone-1 distance trip 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 11:35 Hrs Load has been taken on 220kV Narela 6) Any other relevant information: Approx. load affected 107 MW Regards, Delhi SLDC 20230912140208 2023/09/12 14:02:15 1) Name of the substation and Time: At13:32 HRS 220KV RPH 2) Name of element tripped/restored: 33KV I/C No-1 and 2 with 33KV Buscoupler 3) Relay Annunciation: O/C and E/F both Incomer 4) Details of physically damaged equipment: Monkey jumping 5) Immediate corrective/system normalization steps performed: At 13:52 HRS System energized and in normal position 6) Any other relevant information: Load affected approx 78MW Regards, Delhi SLDC 20230911082658 2023/09/11 08:26:59 1) Name of the substation and Time: 220 kv masjid moth @08.05 hrs 2) Name of element tripped/restored: 220 kv tuglajkabad ckt-1 along 100 mva tr -3 3) Relay Annunciation: 220 kv tuglajkabad ckt-1 GRV TRIP RELAY 100 MVA TR-3 86 ,TRIP RELAY 33 KV I/C 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NO LOAD EFFECTED 6) Any other relevant information: Mtc staff checking DC LEAKAGES and restoreation done 20 kv tuglajkabad [email protected] 100 MVA TR-3 ,@08.15 33 KV I/C @08.15 Regards, Delhi SLDC 20230911081932 2023/09/11 08:19:33 1) Name of the substation and Time: 220 kv gopal [email protected] 2) Name of element tripped/restored: 33 kv incommer -1 3) Relay Annunciation: w/o indication 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: 33 kv bus cxoupler closed .load resotred @08.03 hrs 6) Any other relevant information: na Regards, Delhi SLDC 20230910210848 2023/09/10 21:08:49 1) Name of the substation and Time: 220KV BTPS, 20:56Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-I charged at 20:53Hrs. and 220KV Okhla-I and 220KV Sarita Vihar-I charged at 20:56Hrs. 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230910191624 2023/09/10 19:16:25 1) Name of the substation and Time: 220 kv [email protected] 2) Name of element tripped/restored: 220 kv BTPS-TUG CKT-2 @18.36 220 kv BTPS-OKHLA CKT-2 @18.48 220 kv BTPS-srv ckt-2 @18.49 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230910184558 2023/09/10 18:45:59 1) Name of the substation and Time: 220 kv gopalpur @18.36 2) Name of element tripped/restored: 33 kv incommer-1 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230910182827 2023/09/10 18:28:28 1) Name of the substation and Time: 220KV Okhla, 17:09Hrs. 2) Name of element tripped/restored: Load disappeared on 220KV BTPS-I and II 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Bus-Coupler charged at 17:14Hrs. and supply normalised 6) Any other relevant information: Nil Regards, Delhi SLDC 20230910182232 2023/09/10 18:22:33 1) Name of the substation and Time: 220KV Gopal Pur, 18:11Hrs. 2) Name of element tripped/restored: 33KV I/C-I tripped 3) Relay Annunciation: E/F 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: 33KV Bus-Coupler charged at 18:13Hrs. and supply normalised Regards, Delhi SLDC 20230910181321 2023/09/10 18:13:22 1) Name of the substation and Time: 220kV Geeta Colony -PPG ckt I Restored at 17:56Hrs 2) Name of element tripped/restored: 220kV Geeta colony -PPG ckt-I 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20230910181104 2023/09/10 18:11:05 1) Name of the substation and Time: 220KV BTPS, 17:09Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-I and II, 220KV Okhla-I and II, 220KV Sarita Vihar-I and II tripped 3) Relay Annunciation: No relay indication on 220KV Sarita Vihar-I and II, 220KV Tughlakabad-I, RYB Phase, 86A and 86B on 220KV Tughlakabad-II and E/F on 220KV Okhla-I and II 4) Details of physically damaged equipment: Ballabhgarh Ckt-2 RPH-conductor Snapped near wave trap, 110kV Bus Coupler R and Y Phase Isolator Finger Burned 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Load disappeared on 220KV Ballabhgarh-I and II Regards, Delhi SLDC 20230910175159 2023/09/10 17:52:00 1) Name of the substation and Time: 220KV PPG, 17:33Hrs. 2) Name of element tripped/restored: 220KV Geeta Colony-I tripped 3) Relay Annunciation: RYB Phase, Zone-1, L86, L88 and Fault Location - 2.507Km at PPG end and Zone-1, R-Phase, Y-Phase, Fault Location - 2.93Km, Fault Current, R-Phase - 9.74KA and Y-Phase - 9.173KA at Geeta Colony end 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230910174245 2023/09/10 17:42:46 1) Name of the substation and Time: 220KV Sarita Vihar, 17:27Hrs. 2) Name of element tripped/restored: 100MVA-III along with 66KV I/C-III restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230910173759 2023/09/10 17:37:59 1) Name of the substation and Time: 220KV Sarita Vihar, 17:09Hrs. 2) Name of element tripped/restored: 100MVA-III along with 66KV I/C-III tripped 3) Relay Annunciation: E/F on 100MVA-III and no indication on 66KV I/C-III 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Load disappeared from 220KV BTPS-I and II Regards, Delhi SLDC 20230910164604 2023/09/10 16:46:05 1) Name of the substation and Time: 220KV Masjid Moth, 16:30Hrs. 2) Name of element tripped/restored: 33KV I/C-III restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230910152647 2023/09/10 15:27:39 1) Name of the substation and Time: Vasant Kunj 2) Name of element tripped/restored: At 13:29Hrs 66KV I/C-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: nan 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230910090202 2023/09/10 09:02:02 1) Name of the substation and Time: Masjid Moth 2) Name of element tripped/restored: At 08:08Hrs 33kV I/C-III tripped without indication. Load affected was 32MW. At 08:15Hrs 33KV B/C closed and load normalised. At 08:26Hrs 33KV I/C-III charged but tripped without indication. Load affected was 32MW. At 08:30Hrs 33KV B/C closed and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230909214959 2023/09/09 21:50:00 1) Name of the substation and Time: At 21:21 HRS 220KV Vasant Kunj 2) Name of element tripped/restored: 66KV I/C No-I put off manually by observing Y-Phase common jumper Hotspot 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No Load affected Regards, Delhi SLDC 20230909081137 2023/09/09 08:11:38 1) Name of the substation and Time: At Geeta Colony(03:25hrs) 2) Name of element tripped/restored: 33KV I/C-I and II. 3) Relay Annunciation: tripped on O/C . 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: none. Regards, Delhi SLDC 20230909042207 2023/09/09 04:22:08 1) Name of the substation and Time: 220 KV Geeta Colony 02:55 Hrs. 2) Name of element tripped/restored: 33 KV I/C-1 and 2 3) Relay Annunciation: O/C 4) Details of physically damaged equipment: NO 5) Immediate corrective/system normalization steps performed: BYPL CHANGEOVER THE LOAD IMMIDIATELY 6) Any other relevant information: Both 33 KV I/Cs energised at 03:25 Hrs. but 33 KV Kailash Nagar-2 did not hold. Regards, Delhi SLDC 20230908142432 2023/09/08 14:24:33 1) Name of the substation and Time: 220 kv Narela @114.20 2) Name of element tripped/restored: 220 kv dsidc bawana ckt-1 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230908115127 2023/09/08 11:51:28 1) Name of the substation and Time: 220KV Narela, 11:35Hrs. 2) Name of element tripped/restored: 220KV DSIDC Bawana-I tripped, which was charged at no-load 3) Relay Annunciation: R-Phase and Zone-1 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230907222921 2023/09/07 22:29:22 1) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: At 22:23Hrs 220KV SOW ckt-I charged at No Load which was under Breakdown since 17/05/2023. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230906185251 2023/09/06 18:52:52 1) Name of the substation and Time: At 220 KV Pragati 2) Name of element tripped/restored: 220 KV Prageti-220 KV Maharanibagh At ckt 18:28 Hrs Charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 KV Prageti-220 KV Maharanibagh At ckt 18:28 Hrs Charged Regards, Delhi SLDC 20230906163738 2023/09/06 16:37:38 1) Name of the substation and Time: At Gopalpur(16:20hrs) 2) Name of element tripped/restored: 220KV Mandola ckt-1. 3) Relay Annunciation: Z-1, R phase, D/P, 10.253KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV Wazirabad ckt-1 put ON. 6) Any other relevant information: Restoration time of above ckt was wrongly mentioned in previous message. Regards, Delhi SLDC 20230906162725 2023/09/06 16:27:26 1) Name of the substation and Time: At Gopalpur(11:56hrs) 2) Name of element tripped/restored: 220KV Mandola ckt-1. 3) Relay Annunciation: R phase, Zone-1,D/P, 10.253KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV Wazirabad ckt-1 put ON. 6) Any other relevant information: none. Regards, Delhi SLDC 20230906162311 2023/09/06 16:23:11 1) Name of the substation and Time: At Pragati(15:24hrs) 2) Name of element tripped/restored: 220KV Maharani Bagh ckt. 3) Relay Annunciation: 1.185KM, A-N phase, 15.6KA fault current. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: No load was affected. 6) Any other relevant information: tripped from both ends. Regards, Delhi SLDC 20230906132811 2023/09/06 13:28:12 1) Name of the substation and Time: At Gopalpur(11:56hrs) 2) Name of element tripped/restored: 220KV Mandola ckt-1 3) Relay Annunciation: R phase, zone-1, D/P, 10.253KM. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: 220KV Wazirabad ckt-I put ON, load normalized at Gopalpur. 6) Any other relevant information: none. Regards, Delhi SLDC 20230905184254 2023/09/05 18:42:55 1) Name of the substation and Time: 220 kv ppk-2 @ 18.30 2) Name of element tripped/restored: 220 kv bammnouli ckt-2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230905184249 2023/09/05 18:42:50 1) Name of the substation and Time: 220 kv ppk-2 @ 18.30 2) Name of element tripped/restored: 220 kv bammnouli ckt-2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230905184238 2023/09/05 18:42:39 1) Name of the substation and Time: 220 kv ppk-2 @ 18.30 2) Name of element tripped/restored: 220 kv bammnouli ckt-2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230905171737 2023/09/05 17:17:38 1) Name of the substation and Time: AT 15:51 HRS 220KV SOW 2) Name of element tripped/restored: 100MVA-II 3) Relay Annunciation: Without relay 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 16:01 HRS 100MVA-II Energized 6) Any other relevant information: System is normal Regards, Delhi SLDC 20230905133848 2023/09/05 13:38:49 1) Name of the substation and Time: 220 KV P.P.K-II, 13:05 Hrs 2) Name of element tripped/restored: 220 KV Bamanuli Ckt-II 3) Relay Annunciation: D/P ,R,Y,B ph trip,86A,B,C and 86 L/O at PPK-II end. Already CVT appears from bamnasuli grid 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 13:07 HRS 220KV Buscoupler clsed and 220KV Bamnauli-II closed at 13:25 HRS Load efffected approx 138MW for 2 min only 6) Any other relevant information: PPK-II s/stn is noemal Regards, Delhi SLDC 20230905080533 2023/09/05 08:05:34 1) Name of the substation and Time: 220kV M. Moth @ 07:43 Hrs 2) Name of element tripped/restored: @ 07:40 Hrs 100MVA Tx-III with incomer-III tripped due to DC leakage. Tx restored @ )7:43Hrs 3) Relay Annunciation: 86 Only 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230903191111 2023/09/03 19:11:12 1) Name of the substation and Time: 220 KV Parkstreet 18:07 Hrs. 2) Name of element tripped/restored: 33 KV Bus-1 B-Phase LA blast 3) Relay Annunciation: NA 4) Details of physically damaged equipment: LA 5) Immediate corrective/system normalization steps performed: Transferring the load of bus -1 to bus-2 6) Any other relevant information: Load of 33 KV Tibya college and Parsaad Nagar restored Regards, Delhi SLDC 20230903150736 2023/09/03 15:07:37 1) Name of the substation and Time: 220kV PPK-II @ 15:03 Hrs 2) Name of element tripped/restored: 220kV BML ckt 1 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230903141826 2023/09/03 14:18:27 1) Name of the substation and Time: 220kV PPK-II @ 13:16Hrs 2) Name of element tripped/restored: Supply of 220kV BML ckt 1 failed. Relay at BML end - 86A and B, 86ABC, 86T, 186A and B, RYB Differential Trip. False Fault location - 23.76kM, False Fault Current - 10.2 Amps. With this, 160MVA Tx -4 @ PPK-2 also got tripped. Load affected was 122MW for 5 minutes. 220kV B/C put ON @ 13:21 Hrs and Load made normal. 160MVA Tx - IV restored @ 13:50 Hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230901161325 2023/09/01 16:13:26 1) Name of the substation and Time: 220 KV [email protected] 2) Name of element tripped/restored: 220 KV PRAGATI CKT 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230901145022 2023/09/01 14:50:23 1) Name of the substation and Time: 220 KV MAHARANIBAGH @14.32 2) Name of element tripped/restored: 220 KV PRAGATI CKT 3) Relay Annunciation: DIFF TRIP,86,R PH 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230901140150 2023/09/01 14:01:50 1) Name of the substation and Time: 220 kv Narela @ 13.53 2) Name of element tripped/restored: 220 kV DSIDC BWANA CKT-1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230901140011 2023/09/01 14:00:12 1) Name of the substation and Time: 220 kV naraela @10.54 2) Name of element tripped/restored: 220 kv DSIDC BAWANA CKT-1 3) Relay Annunciation: Z1.R PH ,86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: CKT UNDER NO LOAD CONDITION. Regards, Delhi SLDC 20230830183443 2023/08/30 18:34:44 1) Name of the substation and Time: Bawana 2) Name of element tripped/restored: 220KV Kanjhawala ckt-I charged at 18:08Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230830162021 2023/08/30 16:20:22 1) Name of the substation and Time: At Okhla(16:09hrs) 2) Name of element tripped/restored: 220KV Tughlakabad ckt-I 3) Relay Annunciation: B phase, Z-1 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: none. 6) Any other relevant information: none. Regards, Delhi SLDC 20230830141237 2023/08/30 14:12:37 1) Name of the substation and Time: At Bawana(12:59hrs) 2) Name of element tripped/restored: 220KV Kannjhawla ckt-I. 3) Relay Annunciation: R phase, D/P, Z-1. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C closed at Kanjhawla. 6) Any other relevant information: none. Regards, Delhi SLDC 20230830140641 2023/08/30 14:06:42 1) Name of the substation and Time: At Pappankalan-II(12:50hrs) 2) Name of element tripped/restored: 220KV Bamnoli-II 3) Relay Annunciation: Differential protection, R and Y phase.(12.89KA fault) 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C closed at Pappankalan-II and load normalized. 6) Any other relevant information: ckt tripped from both ends. Regards, Delhi SLDC 20230830135335 2023/08/30 13:53:36 1) Name of the substation and Time: At Masjid Moth(11:52hrs) 2) Name of element tripped/restored: 220KV Tughlakabad ckt-I 3) Relay Annunciation: D/P, Z-1, group A, Y and B phase. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C closed at Mehrauli. 6) Any other relevant information: CVT of Tughlakabad was available at Mehrauli. Regards, Delhi SLDC 20230830135114 2023/08/30 13:51:15 1) Name of the substation and Time: At Okhla(11:52hrs) 2) Name of element tripped/restored: 220KV Tughlakabad ckt-I 3) Relay Annunciation: B phase, Z-1, 1.3KM 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other parallel circuit. 6) Any other relevant information: Circuit tripped from both ends. Regards, Delhi SLDC 20230830001329 2023/08/30 00:13:31 1) Name of the substation and Time: At 23:34 HRS 220KV VSK 2) Name of element tripped/restored: 66KV I/C I and II of 100MVA -I and II 3) Relay Annunciation: Any trip R-phase ST-I Y-phase O/C,E/F,86 (Both) 4) Details of physically damaged equipment: 66KV Palam tripped with heavy sound 5) Immediate corrective/system normalization steps performed: 23:58 HRS 66KV I/C I and II of 100MVA -I and II Energized 6) Any other relevant information: Approx 37MW Load effected and system is normal Regards, Delhi SLDC 20230829001521 2023/08/29 00:15:22 1) Name of the substation and Time: 220 kv [email protected] hrs 2) Name of element tripped/restored: 100 mva tr-4 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230828192305 2023/08/28 19:23:06 1) Name of the substation and Time: 220 KV 220 KV ROHINI-1 @17.56 2) Name of element tripped/restored: 66 KV I/C -1, 66 KV I/C -2, 66 KV I/C -3, 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: 8/28/2023 6:18:54 PM SMS MAY KINDLY IGNORE Regards, Delhi SLDC 20230828181853 2023/08/28 18:18:54 1) Name of the substation and Time: 220 KV ROHINI-1 @17.56 2) Name of element tripped/restored: 66 KV DMRC CKT-1 66 KV DMRC CKT-2 66 KV DMRC CKT-3 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NDPL SHIFTED LOAD OTHER GRIDS 6) Any other relevant information: NA Regards, Delhi SLDC 20230828181724 2023/08/28 18:17:25 1) Name of the substation and Time: 220 KV ROHINI-1 @17.16 CORRIGENDUM 2) Name of element tripped/restored: 66 KV I/C -1 66 KV I/C -2 66 KV I/C -3 66 KV I/C -4 3) Relay Annunciation: 66 KV I/C -1 DIFF TRIP ,R,Y PH TRIP, 66 KV I/C -2 OC,RYB PH TRIP 66 KV I/C -3 EF 100 MVA TR-4 DIFF TRIP,OPTD,86 AB,Y PH TRIP 66 KV I/C -4 WITHOUT INDICATION TRIP 66 KV DMRC CKT-1 YB PH TRIP 4) Details of physically damaged equipment: 66 KV DMRC CKT-1 Y AND B PH CT DAMAGED,Y PH DROPPER CONDUCTOR DAMAGED,R PH BUS JACK DAMAGED 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230828175039 2023/08/28 17:50:40 1) Name of the substation and Time: 220 kv Rohini -1 @17.16 2) Name of element tripped/restored: 66 KV I/C -1,2,3,4 3) Relay Annunciation: OPERATION STAFF IN THE YARD 4) Details of physically damaged equipment: DMRC CKT-1 R PH CT BLAST 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230828162529 2023/08/28 16:25:30 1) Name of the substation and Time: At 16:19 HRS 220KV KNJ 2) Name of element tripped/restored: 220KV BWN-KNJ ckt-I energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV BWN-KNJ ckt-I energized and system is normal Regards, Delhi SLDC 20230828143038 2023/08/28 14:30:39 1) Name of the substation and Time: 220 KV KNJ at 13:58 Hrs 2) Name of element tripped/restored: 220 KV Bawana -Knj ckt-I 3) Relay Annunciation: BWA end-B ph. Trip,Distt.28.73 KM, Ir-253.2A,Ib-623.3A,Ic-3.637KA,In-2.832KA ,CVT disappear at KNJ end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At14:10 Hrs Load taken on 220 KV Mundka ckt 6) Any other relevant information: Approx load Affected 76 MW Regards, Delhi SLDC 20230828125835 2023/08/28 12:58:36 1) Name of the substation and Time: At 11:30HRS 220KV PPK-I 2) Name of element tripped/restored: 160MVA-III and 66KV I/C no-II 3) Relay Annunciation: 160MVA-III Auto trip, 66KV I/C -II o/c R phase stage-I 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: Load C/O by DISCOM 6) Any other relevant information: Load approx 116MW Affected 160MVA-III and 66KV I/C no-II energized at 12:38 HRS and system normalised Regards, Delhi SLDC 20230824193618 2023/08/24 19:36:19 1) Name of the substation and Time: 220kV, Sabzi Mandi, 19:25 Hrs 2) Name of element tripped/restored: New 220/33/11kV, 100 MVA Tx-I, TAL- Make, Sr. No- SP-1211-7 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: New 220/33/11kV, 100 MVA Tx-I has been charged on no load at 19:25 Hrs on 24.08.2023 6) Any other relevant information: - Regards, Delhi SLDC 20230824104208 2023/08/24 10:42:10 1) Name of the substation and Time: 220KV Bamnauli, 09:59Hrs. 2) Name of element tripped/restored: 220KV PPK-I Ckt-I tripped 3) Relay Annunciation: Y-Phase, B-Phase, 86A, 86B, 86T, Zone-1, Zone-2 and Fault Location - 7.407Km 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230824101724 2023/08/24 10:17:25 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) important lines flow data not updating in real time control room .kindly resolve as soon as possible as of now System operation facing real time operation problems due data suspect 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20230824094033 2023/08/24 09:40:34 1) Name of the substation and Time: At Maharani Bagh(06:03hrs) 2) Name of element tripped/restored: 400KV Bus-II energized. ICT-III energized at 00:45hrs. ICT-IV energized at 02:41hrs. 3) Relay Annunciation: none. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: none. 6) Any other relevant information: System normalized at 220KV Maharani bagh end. Regards, Delhi SLDC 20230823173802 2023/08/23 17:38:03 1) Name of the substation and Time: 220KV SOW, 17:26Hrs. 2) Name of element tripped/restored: 220KV Geeta Colony-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230823173651 2023/08/23 17:36:52 1) Name of the substation and Time: 220KV SOW, 17:07Hrs. 2) Name of element tripped/restored: 220KV Geeta Colony-II tripped 3) Relay Annunciation: Y-Phase Trip, B-Phase Trip, Auto Trip, Zone-1 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230823154114 2023/08/23 15:41:15 1) Name of the substation and Time: 220KV Kanjhawala, 15:30Hrs. 2) Name of element tripped/restored: 220KV Mundka restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230823145541 2023/08/23 14:55:42 1) Name of the substation and Time: 220 kv kanjhawala @14.45 2) Name of element tripped/restored: 220 kv Munduka 3) Relay Annunciation: w/o indication 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: ckt under no load Regards, Delhi SLDC 20230823141629 2023/08/23 14:16:31 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Data suspect at below s/stn 220 kv lODHI rOAD 220 KV HCML 220 kV TRAUMA CENTRE 220 KV GAZIPUR 220 KV PEERA GARHI 220 KV DEV NAGAR KINDLY RESOLVE FOR SMOOTH REAL TIME OPERATION 2) NA 3) NA 4) NA 5) NA 6) NA Regards, Delhi SLDC 20230823100222 2023/08/23 10:02:23 1) Name of the substation and Time: Maharani Bagh 2) Name of element tripped/restored: At 08:14Hrs 400KV Bus-I charged. At 09:23Hrs 315MVA ICT-I charged. At 09:26Hrs 315MVA ICT-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230823043334 2023/08/23 04:33:35 1) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: At 02:33Hrs 220KV Mehrauli ckt-I tripped. No load was affected. 3) Relay Annunciation: Relay at Tughlakabad end are Z-1 Z-2 B-phase line differential 1.8km If=29.6KA. Relay at Mehrauli end are line differential B-phase 16.7km. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230822173222 2023/08/22 17:32:23 1) Name of the substation and Time: At Shalimarbagh(16:00hrs) 2) Name of element tripped/restored: 220KV bus-I and II 3) Relay Annunciation: bus bar operated. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: TPDDL asked to C/O load. 6) Any other relevant information: none. Regards, Delhi SLDC 20230822172957 2023/08/22 17:29:58 1) Name of the substation and Time: At Shalimarbagh(15:40hrs) 2) Name of element tripped/restored: 220KV Bus-I. 3) Relay Annunciation: bus bar operated. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: TPDDL asked to C/O load. 6) Any other relevant information: Load of 220KV Bawana-I, DMRC-I, SGTN-I and II affected. Regards, Delhi SLDC 20230822172713 2023/08/22 17:27:14 1) Name of the substation and Time: At Shalimarbagh(15:35hrs) 2) Name of element tripped/restored: 220KV Bus-II 3) Relay Annunciation: bus bar operated. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: TPDDL asked to C/O load. 6) Any other relevant information: Load of 220KV Bawana-II, 100MVA-I ,II and III, DMRC-II affected. Regards, Delhi SLDC 20230822130736 2023/08/22 13:07:45 1) Name of the substation and Time: At Gazipur(12:54hrs) 2) Name of element tripped/restored: 220KV Noida sector-20(UPPCL) 3) Relay Annunciation: Load taken within 40MW limit. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: none. 6) Any other relevant information: none. Regards, Delhi SLDC 20230821113117 2023/08/21 11:31:18 1) Name of the substation and Time: 220KV Gazipur, 09:55Hrs. 2) Name of element tripped/restored: 66KV I/C-III and 66KV Bus-Coupler restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230821112938 2023/08/21 11:29:39 1) Name of the substation and Time: 220KV Gazipur, 09:50Hrs. 2) Name of element tripped/restored: 66KV I/C-III and 66KV Bus-Coupler tripped 3) Relay Annunciation: 66KV I/C-III tripped off due to RYB Phase, O/C and E/F and 66KV Bus-Coupler tripped off without any indication 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230821110918 2023/08/21 11:09:20 1) Name of the substation and Time: 220KV R. K. Puram, 10:10Hrs. 2) Name of element tripped/restored: 220KV Bus Section-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Clerance given by Sh. Jatin Kumar, DM(T), Protection at 10:06Hrs. and Sh. Naresh Pali, AM(T), R. K. Puram at 10:07Hrs. Regards, Delhi SLDC 20230821110313 2023/08/21 11:03:18 1) Name of the substation and Time: 220KV R. K. Puram, 09:32Hrs. 2) Name of element tripped/restored: 220KV Bus Section-I operated 3) Relay Annunciation: O/C and 86 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: BRPL, BYPL, NDMC and DMRC asked to change over the load. 6) Any other relevant information: 220KV Bus-I (Part-A) effected Regards, Delhi SLDC 20230820235611 2023/08/20 23:56:11 1) Name of the substation and Time: 220KV Maharani Bagh, 23:48Hrs. 2) Name of element tripped/restored: 220KV Pragati restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230820235444 2023/08/20 23:54:46 1) Name of the substation and Time: 220KV Sarita Vihar, 23:35Hrs. 2) Name of element tripped/restored: 220KV Maharani Bagh (at no-load) and 220KV Pragati restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230820211106 2023/08/20 21:11:08 1) Name of the substation and Time: 220KV Ridge Valley, 20:58Hrs. 2) Name of element tripped/restored: 220KV R. K. Puram-I and II restored at no-load 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230820210913 2023/08/20 21:09:16 1) Name of the substation and Time: 220KV R. K. Puram, 20:40Hrs. 2) Name of element tripped/restored: 220KV Vasant Kunj-I restored at no-load 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230820172118 2023/08/20 17:21:30 1) Name of the substation and Time: 220KV RKPuram Substation 2) Name of element tripped/restored: 220KV Vasant Kunj ckt-II tripped with heavy smoke 3) Relay Annunciation: Trip supervision ckt fail 4) Details of physically damaged equipment: 220KV Bus-II isolator of 220KV Vasant kunj ckt damaged hence 220KV Bus-II become shorted 5) Immediate corrective/system normalization steps performed: At14:25HRS 220KV Bus-I energized 14:48 HRS 160MVA-I energized 15:04HRS 160MVA-II energized 15:07HRS 66KV DMRC I and II energized 6) Any other relevant information: Approx 60MW load Affected and 220KV BUs-II is shorted/dead Regards, Delhi SLDC 20230820035226 2023/08/20 03:52:27 1) Name of the substation and Time: 220kV Okhla, 03:38Hrs 2) Name of element tripped/restored: 33kV I/c-III and IV tripped with 33kV EOK feeder @ 03:26 Hrs. I/C -3 and 4 restored @ 03:38 Hrs 3) Relay Annunciation: I/C-III and IV - O/C R-Ph. 86 EOK - O/C RYB Ph. 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: nil 6) Any other relevant information: Load was 17 MW each on I/C- 3 and 4 Regards, Delhi SLDC 20230820014133 2023/08/20 01:41:34 1) Name of the substation and Time: Maharani Bagh 2) Name of element tripped/restored: At 01:10Hrs 500MVA ICT-4 made off by PGCIL staff manually due to gas leakage in CT compartment. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230819091019 2023/08/19 09:10:20 1) Name of the substation and Time: At Patparganj(06:16hrs for 220KV Preet Vihar ckt and 06:18hrs for 220KV IP ckt). 2) Name of element tripped/restored: 220KV Preet Vihar ckt-I andII, and 220KV IP ckt-I and II. 3) Relay Annunciation: 220KV bus bar protection operated on 220KV Bus-II at Patparganj. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Pragti S/S. 6) Any other relevant information: none. Regards, Delhi SLDC 20230819090401 2023/08/19 09:04:03 1) Name of the substation and Time: At Patparganj(05:44hrs) 2) Name of element tripped/restored: 220KV Preet Vihar ckt-I andII, and 220KV IP ckt-I and II. 3) Relay Annunciation: Bus bar Protection operated on 220KV Bus-II at Patparganj. 4) Details of physically damaged equipment: None. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Pragati Substation. 6) Any other relevant information: Pragati GT-II and STG tripped on grid disturbance later. GT-II brought on bar, normalization of STG under process. Regards, Delhi SLDC 20230818211551 2023/08/18 21:15:52 1) Name of the substation and Time: At Wazirabad(20:14hrs) 2) Name of element tripped/restored: 220KV Mandola ckt-I. 3) Relay Annunciation: R phase, zone-I, 5.7KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other ckt. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230818211347 2023/08/18 21:13:48 1) Name of the substation and Time: At Gopalpur(18:27hrs) 2) Name of element tripped/restored: 220KV Mandola ckt-I. 3) Relay Annunciation: R phase, zone-I, 2.8KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV Wazirabad-II put ON. 6) Any other relevant information: none. Regards, Delhi SLDC 20230818163703 2023/08/18 16:37:04 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: At 16:15Hrs 220KV Mandaula ckt-I tripped on R-phase Z-1 2.8km If=6.9KA. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230818163125 2023/08/18 16:31:26 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: At 16:15Hrs 220KV Mandaula ckt-I tripped on R-phase Z-1 5.7km If=9.8KA. No load was affected 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230818132611 2023/08/18 13:26:12 1) Name of the substation and Time: Sabzi Mandi 2) Name of element tripped/restored: At 12:32Hrs 100MVA T/F-2 tripped on Differential RYB-phase LV REF. Grid staff have reported kite threads on T/F. Load affected was 66MW. At 13:18Hrs 100MVA T/F-2 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230818132246 2023/08/18 13:22:47 1) Name of the substation and Time: At 11:33Hrs supply fail of 220KV Bawana ckt-I and the same was tripped at Bawana end without indication. Load affected was approx 119MW. 66KV NSC ckt I and II tripped without indication. 66KV Bawana-1 Phase -2 ckt I and II tripped on C-phase Z-1. At 11:46Hrs 220KV B/C closed. At 13:10Hrs 220KV Bawana-DSIDC Bawana ckt-I charged. 2) Name of element tripped/restored: na 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230817234024 2023/08/17 23:40:25 1) Name of the substation and Time: 220KV Peeragarhi, 23:07Hrs. 2) Name of element tripped/restored: 220KV, 50MVAR Reactor tripped 3) Relay Annunciation: Differential 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Peeragarhi operation staff informed to System Operation, Minto Road regarding this tripping around 23:20Hrs. Regards, Delhi SLDC 20230816212657 2023/08/16 21:26:59 1) Name of the substation and Time: 220kV PPG, 16:40Hrs 2) Name of element tripped/restored: 33kV I/C-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 33kV I/C-I charged at 19:55 Hrs and system is normalized Regards, Delhi SLDC 20230816171956 2023/08/16 17:19:57 1) Name of the substation and Time: 220 kv PPG @16.40 2) Name of element tripped/restored: 33 KV Incommer-1 3) Relay Annunciation: CB put off mannually due to sparking BY PPG OPRN STAFFas per instruction of DM(T) Mtc ppg 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230816144211 2023/08/16 14:42:12 1) Name of the substation and Time: 220KV PPK-II, 14:40Hrs. 2) Name of element tripped/restored: 220KV Bamnauli-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230816140521 2023/08/16 14:05:22 1) Name of the substation and Time: 220KV PPK-II, 13:48Hrs. 2) Name of element tripped/restored: 220KV Bamnauli-II tripped 3) Relay Annunciation: Zone-1, RYB Phase Trip and Fault Location - 4.5Km 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230815165142 2023/08/15 16:51:43 1) Name of the substation and Time: 220KV IP, 16:47Hrs. 2) Name of element tripped/restored: 220KV PPG-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230815163829 2023/08/15 16:38:30 1) Name of the substation and Time: 220KV IP, 16:25Hrs. 2) Name of element tripped/restored: 220KV PPG-II tripped 3) Relay Annunciation: No indication 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230815152651 2023/08/15 15:26:52 1) Name of the substation and Time: 220KV Maharani Bagh, 15:06Hrs. 2) Name of element tripped/restored: 220KV Lodhi Road-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230815152446 2023/08/15 15:24:47 1) Name of the substation and Time: 220KV Shalimaar Bagh, 14:59Hrs. 2) Name of element tripped/restored: 33KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230815144949 2023/08/15 14:49:50 1) Name of the substation and Time: 220 KV SMB @14.20 2) Name of element tripped/restored: 33 KV I/C-1 3) Relay Annunciation: OC,EF, R PH 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230815144834 2023/08/15 14:48:35 1) Name of the substation and Time: 220 KV DWARAKA @14.45 2) Name of element tripped/restored: 220 KV NARAINA CKT-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230815144412 2023/08/15 14:44:13 1) Name of the substation and Time: 220 KV MEHROULI @14.44 2) Name of element tripped/restored: 220 KV DAILA CKT-1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230815143950 2023/08/15 14:39:51 1) Name of the substation and Time: 220 KV MABH @14.23 2) Name of element tripped/restored: 220 KV LODHI ROAD CKT-2 3) Relay Annunciation: Z1,RY PH TRIP ,GEN TRIP 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NO LOAD EFFECTED Regards, Delhi SLDC 20230815140645 2023/08/15 14:06:46 1) Name of the substation and Time: 220 KV SMB @14.02 2) Name of element tripped/restored: 220 KV ROHINI-1 CKT-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230815133320 2023/08/15 13:33:20 1) Name of the substation and Time: 220 KV SMB @13.31 2) Name of element tripped/restored: 220 KV ROHIN-1 CKT-1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: LONE CHARGED FROM ROHINI-1 END Regards, Delhi SLDC 20230815132804 2023/08/15 13:28:06 1) Name of the substation and Time: 220 KV [email protected] 2) Name of element tripped/restored: 220 KV DAIL CKT-1 3) Relay Annunciation: Z1,RYB PH TRIP,86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NO LOAD EFFECTED Regards, Delhi SLDC 20230815132115 2023/08/15 13:21:16 1) Name of the substation and Time: 220 KV SOW @13.17 2) Name of element tripped/restored: 220 KV MANDOLA CKT-4 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230815131245 2023/08/15 13:12:45 1) Name of the substation and Time: 220 KV DWARAKA @13.03 2) Name of element tripped/restored: 220 KV NARAINA CKT-2 3) Relay Annunciation: Z1,4.1 KM ,TY PH TRIP,86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NO LOAD EFFECTED Regards, Delhi SLDC 20230815131058 2023/08/15 13:10:59 1) Name of the substation and Time: 220 KV [email protected] 2) Name of element tripped/restored: 220 KV MBAGH CKT-1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230815130717 2023/08/15 13:07:17 1) Name of the substation and Time: 220 KV SMB @13.00 2) Name of element tripped/restored: 220 KV ROHIN -CKT-1 3) Relay Annunciation: Z1,B,R PH ,DIST TRIP, 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NO LOAD EFFECTED Regards, Delhi SLDC 20230815130525 2023/08/15 13:05:25 1) Name of the substation and Time: 220 GAZIPUR @12.40 2) Name of element tripped/restored: 220 KV MBAGH CKT-1 3) Relay Annunciation: Z1,RYB PH TRIP,86, 2.9 KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230815125019 2023/08/15 12:50:20 1) Name of the substation and Time: 220 kv [email protected] 2) Name of element tripped/restored: 220 kv smb ckt-2 3) Relay Annunciation: z1,86.diff trip.RY PH TRIP 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: CKT UNDER NO LOAD STATE Regards, Delhi SLDC 20230815121058 2023/08/15 12:10:59 1) Name of the substation and Time: 220 KV SOW @12.02 2) Name of element tripped/restored: 220 KV MANDOLA CKT-4 3) Relay Annunciation: Z1,R,Y PH TRIP ,86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NO LOAD EFFECTED Regards, Delhi SLDC 20230815114636 2023/08/15 11:46:37 1) Name of the substation and Time: 220 KV GOPALPUR @11.28 2) Name of element tripped/restored: 220 KV SUBZIMANDI CKT-1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230815110545 2023/08/15 11:05:45 1) Name of the substation and Time: 220 kv gopal pur @10.53 2) Name of element tripped/restored: 220 kv subzimandi ckt-1 3) Relay Annunciation: z2, ,Y and B PH TRIP 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: CKT UNDER NO LOAD STATE Regards, Delhi SLDC 20230815010641 2023/08/15 01:06:42 1) Name of the substation and Time: K/Gate 2) Name of element tripped/restored: At 01:00 Hrs 11KV I/C-2 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230814210634 2023/08/14 21:06:44 1) Name of the substation and Time: K/Gate 2) Name of element tripped/restored: At 19:58Hrs 11KV I/C-2 tripped on O/C B-phase E/F. Load affected was 3MW. Discoms have been asked to shift the load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230814150927 2023/08/14 15:09:27 1) Name of the substation and Time: At 14:11 Hrs. 220 KV SOW 2) Name of element tripped/restored: 220 KV K.GATE CKT-1 3) Relay Annunciation: B-Y- PHASE,Z-1,Dist-1.3 KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 220KV B/C MADE ON 6) Any other relevant information: Ckt-1 restored at 14:57 Hrs.Aprox.40 MW load affected for 02 Min Regards, Delhi SLDC 20230814071705 2023/08/14 07:17:06 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Due to some fluctuation in demand data in SCADA ,peak power demand of delhi of dated 13.08.2023 has been recorded wrongly. Actual peak load 6197 MW at 23:17Hrs dt 13.08.2023 2) - 3) - 4) - 5) - 6) - Regards, Delhi SLDC 20230813194928 2023/08/13 19:49:30 1) Name of the substation and Time: 220kV RHN-I, 19:17 Hrs 2) Name of element tripped/restored: 220kV SMB-I 3) Relay Annunciation: B and C-Ph, Zone-I, Distance and differential, 86A 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected and CVT disappeared at SMB end Regards, Delhi SLDC 20230813170426 2023/08/13 17:04:27 1) Name of the substation and Time: At Naraina(16:58hrs) 2) Name of element tripped/restored: 220KV Dwarka ckt-I. 3) Relay Annunciation: Z-1, D/P, 2.7KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: none. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230813152227 2023/08/13 15:22:28 1) Name of the substation and Time: At Patparganj(15:01hrs) 2) Name of element tripped/restored: 220KV Geeta colony ckt-I 3) Relay Annunciation: D/P, Y and B phase trip. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: none. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230813152029 2023/08/13 15:20:30 1) Name of the substation and Time: At Patparganj(14:24hrs). 2) Name of element tripped/restored: 220KV Geeta Colony ckt-I. 3) Relay Annunciation: D/P, Y and B phase trip, 7.6KA fault. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other parallel ckt. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230813151758 2023/08/13 15:17:58 1) Name of the substation and Time: At Gopalpur(14:06hrs) 2) Name of element tripped/restored: 220KV Mandola ckt-II. 3) Relay Annunciation: R phase, zone-II, 19.4KM, 9.27KA fault current at Mandola. No tripping at Gopalpur substation. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: 220KV Wazirabad-I put ON at Gopaplur station. 6) Any other relevant information: Load of Subzimandi station was also affected. Regards, Delhi SLDC 20230813150904 2023/08/13 15:09:05 1) Name of the substation and Time: At Naraina(13:55hrs) 2) Name of element tripped/restored: 220KV Dwarka ckt-I. 3) Relay Annunciation: A/R, 86 , D/P, 2.7KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other parallel ckt. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230813073631 2023/08/13 07:36:32 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) BOTH MTNL TELEPHONES NOT WORKING IN THE CONTROL ROOM SYTEM OPERATION 2) NA 3) NA 4) NA 5) NA 6) NA Regards, Delhi SLDC 20230813033640 2023/08/13 03:36:41 1) Name of the substation and Time: 220 kv ppg @02.40 hrs 2) Name of element tripped/restored: 33 kv i/c -2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230812193435 2023/08/12 19:34:37 1) Name of the substation and Time: 220KV PPG, 19:31Hrs. 2) Name of element tripped/restored: 33KV I/C-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230812192507 2023/08/12 19:25:08 1) Name of the substation and Time: 220 KV PPG @19.20 2) Name of element tripped/restored: NA 3) Relay Annunciation: NA 4) Details of physically damaged equipment: corrigendum: PPG OPRN staff informed that 16 mva tr bus -1 ,B ph isolator PORCELIN damaged and 33 kv bus coupler isolator are healthy 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230812190534 2023/08/12 19:05:35 1) Name of the substation and Time: 220 KV PPG @18.34 2) Name of element tripped/restored: 33 KV I/C -1 33 KV I/C-3 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: 33 KV I/C -1 33 KV I/C-3 are charged by OPRN staff of PPG without any instruction/consent of sysytem operation minto road Regards, Delhi SLDC 20230812190200 2023/08/12 19:02:01 1) Name of the substation and Time: 220 kv Patpargunj @18.14 2) Name of element tripped/restored: 33 kv i/c -1 33 kv i/c -2, 33 kv i/c -3 3) Relay Annunciation: OC ,E/F, RP H 4) Details of physically damaged equipment: 33 KV BUS COUPLER R,Y,B PH ISOLATER FLASH/DAMEGED 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: bypl informed to transfer load to other girids oprn staff conveyed th msg @18.50 Regards, Delhi SLDC 20230811191929 2023/08/11 19:19:29 1) Name of the substation and Time: 220kV K Gate @ 18:58Hrs 2) Name of element tripped/restored: 220kV SOW 1 restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230811171523 2023/08/11 17:15:24 1) Name of the substation and Time: At16:57 HRS 220KV kashmiri gate 2) Name of element tripped/restored: 220KV SOW-I ckt tripped 3) Relay Annunciation: Didderential,186A,B 186X 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220KV Buscoupler was cloesed hence no load effected. 6) Any other relevant information: - Regards, Delhi SLDC 20230811140622 2023/08/11 14:06:23 1) Name of the substation and Time: At13:45 HRS 220KV Kashmiri Gate 2) Name of element tripped/restored: 220KV SOW-I tripped 3) Relay Annunciation: Differential186AB,186X 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At13:46HRS 220KV Buscoupler closed and system normalised At13:59 HRS 220KV SOW-I ckt closed and whole system is normal 6) Any other relevant information: Apptrox 41MW load effected Regards, Delhi SLDC 20230811121115 2023/08/11 12:11:17 1) Name of the substation and Time: At 11:33HRS 220KV Gopalpur 2) Name of element tripped/restored: 160MVA-Tx no-4 with 66KV I/C due to protection testing 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: At11:34 HRS 160MVA-$ charged and At 11:53HRS 66kv I/C charged and system is normal 6) Any other relevant information: Approx 24MW load effected and system is normal Regards, Delhi SLDC 20230810084137 2023/08/10 08:41:37 1) Name of the substation and Time: 220 KV ROHINI-1 @08.38 HRS 2) Name of element tripped/restored: 66 KV INCOMER -1 and 2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230810081716 2023/08/10 08:17:17 1) Name of the substation and Time: 220 kv rohini-1 @07.42 hrs 2) Name of element tripped/restored: 66 kc i/c-1 and 2 3) Relay Annunciation: without indication 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: load normalized by closing bus coupler Regards, Delhi SLDC 20230810075557 2023/08/10 07:55:58 1) Name of the substation and Time: CCGT Bawana, 3:19Hrs 2) Name of element tripped/restored: 400kV Bahadurgarh, bay no 413 and 400kV Tie Bay No.414 3) Relay Annunciation: R-Ph and Y-Ph trip Zone 1 Fault location 12.2 Km, Fault current R-Ph 7.18kA and Y-Ph 6.85KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 400kV Interconnector 1 and 2 made close 6) Any other relevant information: NIL, SMS Portal not worked at night Regards, Delhi SLDC 20230809170209 2023/08/09 17:02:09 1) Name of the substation and Time: 220kV Sarita Vihar @ 16:05 Hrs 2) Name of element tripped/restored: 66/11kV, 20MVA Tx-II energised at No Load 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: Bay/ Transformer was under PTW since 02.08.2022 Regards, Delhi SLDC 20230809070055 2023/08/09 07:00:56 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Due to some flectuation in demand data in SCADA ,peak power demand of delhi of dated 08.08.2023 has been recorded wrongly.Actual peak load 6372 MW at 15:15 Hrs 2) - 3) - 4) - 5) - 6) - Regards, Delhi SLDC 20230809043006 2023/08/09 04:30:07 1) Name of the substation and Time: At 220KV GZP, 18:40 2) Name of element tripped/restored: 220KV PPG 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: at 04:18 hrs energized 6) Any other relevant information: - Regards, Delhi SLDC 20230808214635 2023/08/08 21:46:36 1) Name of the substation and Time: 220kV PPG, 18:40 2) Name of element tripped/restored: 220kV IP-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 21:40 Hrs, enersized 6) Any other relevant information: - Regards, Delhi SLDC 20230808193004 2023/08/08 19:30:05 1) Name of the substation and Time: 220GZP, 18:40 Hrs 2) Name of element tripped/restored: 220kV PPG 3) Relay Annunciation: 86, CVT appeared at GZP end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20230808192620 2023/08/08 19:26:21 1) Name of the substation and Time: 220kV PPG, 18:40 Hrs 2) Name of element tripped/restored: 220kV IP-I( Both end tripping) 3) Relay Annunciation: Distance Prot, Zone -I, 186 at IP and PPG end and 4) Details of physically damaged equipment: Common jumper snaped at PPG end 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20230808164922 2023/08/08 16:49:23 1) Name of the substation and Time: 220KV K. Gate, 16:42Hrs. 2) Name of element tripped/restored: 220KV SOW-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230808164800 2023/08/08 16:48:01 1) Name of the substation and Time: 220KV K. Gate, 16:22Hrs. 2) Name of element tripped/restored: 220KV SOW-I tripped 3) Relay Annunciation: RYB Trip, 186A and 186HX 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Bus-Coupler charged at 16:23Hrs. and supply normalized 6) Any other relevant information: Nil Regards, Delhi SLDC 20230808131832 2023/08/08 13:18:34 1) Name of the substation and Time: 220KV Geeta Colony, 13:14Hrs. 2) Name of element tripped/restored: 220KV SOW-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230808121301 2023/08/08 12:13:03 1) Name of the substation and Time: SLDC, SCADA Phone network down since 10:30 AM 2) Name of element tripped/restored: Scada communication from all grids of DTL 3) Relay Annunciation: Scada communication 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: : Informed to the concerned officials of Communication division to rectify the issue at earliest 6) Any other relevant information: Hot line and SCADA communications are not working, also, many DTL S/stns don’t have land line facility, hence, could not communicate. Regards, Delhi SLDC 20230808113120 2023/08/08 11:31:21 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) No communication with grids through SCADA phones since 10:30 Hrs 2) Informed to concerned offcials yet the problem is not rectified. 3) NIL 4) NIL 5) NIL 6) NIL Regards, Delhi SLDC 20230808102110 2023/08/08 10:21:11 1) Name of the substation and Time: At 220KV Geeta colony(09:20) 2) Name of element tripped/restored: 220KV Wazirabad ckt-II 3) Relay Annunciation: tripped manually. 4) Details of physically damaged equipment: 220KV B phase bus isolator clamp damaged. 5) Immediate corrective/system normalization steps performed: ckt put off manually and load taken by 220KV Gazipur ckt. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230807195308 2023/08/07 19:53:09 1) Name of the substation and Time: At BTPS(18:27hrs) 2) Name of element tripped/restored: 220KV Tughlakabad ckt-I 3) Relay Annunciation: Z-1, B phase,0.54KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: none. 6) Any other relevant information: none. Regards, Delhi SLDC 20230807153651 2023/08/07 15:36:52 1) Name of the substation and Time: 220KV BTPS, 15:05Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-I tripped 3) Relay Annunciation: Zone-1, B-Phase Trip, Fault Location - 0.54Km and Fault Current, B-Phase - 11.56KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: 220KV BTPS-Tughlakabad Ckt.-I tripped only at BTPS end. Regards, Delhi SLDC 20230807153212 2023/08/07 15:32:13 1) Name of the substation and Time: 220KV BTPS, 15:05Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-I tripped 3) Relay Annunciation: Zone-1, B-Phase Trip, Fault Location - 0.54Km and Fault Current, B-Phase - 11.56KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230806210841 2023/08/06 21:08:42 1) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: At 17:40Hrs 20MVA T/F-1 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230806162136 2023/08/06 16:21:37 1) Name of the substation and Time: At Sarita Vihar(15:13hrs) 2) Name of element tripped/restored: 20MVA-I 3) Relay Annunciation: 86, Transformer trouble alarm, 30E, 86. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: BSES asked to changeover load. 6) Any other relevant information: none. Regards, Delhi SLDC 20230805094248 2023/08/05 09:42:49 1) Name of the substation and Time: New message view page testing 2) Name of element tripped/restored: New message view page testing 3) Relay Annunciation: New message view page testing 4) Details of physically damaged equipment: New message view page testing 5) Immediate corrective/system normalization steps performed: New message view page testing 6) Any other relevant information: New message view page testing Regards, Delhi SLDC 20230804210703 2023/08/04 21:07:04 1) Name of the substation and Time: 220 kv RK PURAM @20.32 HRS 2) Name of element tripped/restored: 160 MVA TR-2 3) Relay Annunciation: Massage received from operation staff that heavy smoke came from 160 MVA -2. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NO LOAD EFFECTED Regards, Delhi SLDC 20230804195447 2023/08/04 19:54:48 1) Name of the substation and Time: 220KV Lodhi Road, 16:50Hrs. to 18:22Hrs. 2) Name of element tripped/restored: 33KV I/C-I and 33KV Bus-Sectionaliser-I and II charged at 16:50Hrs., 20MVA-I and 16MVA-III charged at 16:55Hrs., 11KV I/C-III charged at 17:00Hrs., 11KV I/C-I charged at 17:15Hrs., 33KV EOK charged at 17:27Hrs. , 33KV IHC-II and 33KV JLNS charged at 17:40Hrs. and 33KV NDSE-II charged at 18:22Hrs. 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230804194458 2023/08/04 19:44:59 1) Name of the substation and Time: 220KV Lodhi Road, 16:35Hrs. 2) Name of element tripped/restored: 33KV I/C-I, 20MVA-I along with 11KV I/C-I, 16MVA-III along with 11KV I/C-III, 33KV Bus-Sectionaliser-I and II, 33KV EOK, 33KV IHC-II, 33KV JLNS and 33KV NDSE-II tripped 3) Relay Annunciation: 33KV I/C-I, 20MVA-I, 16MVA-III, 33KV EOK, 33KV IHC-II, 33KV JLNS and 33KV NDSE-II tripped off due to 86B. 33KV Bus-Sectionaliser-I and II and 11KV I/C-I tripped off without any indication. 11KV I/C-III tripped off due to 80. 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Total load effected - 30MW Regards, Delhi SLDC 20230804055837 2023/08/04 05:58:38 1) Name of the substation and Time: 220 wazirpur @ 05:32hrs 2) Name of element tripped/restored: 100mva 1 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230804043409 2023/08/04 04:34:09 1) Name of the substation and Time: 220kV Trauma Centre @ 23:49 Hrs 2) Name of element tripped/restored: 33kV Incomer -1 restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230804042938 2023/08/04 04:29:38 1) Name of the substation and Time: 220kV Trauma Centre @ 23:49 Hrs 2) Name of element tripped/restored: 33kV Incomer -1 restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230804042817 2023/08/04 04:28:17 1) Name of the substation and Time: 220kV Trauma Centre @ 23:49 Hrs 2) Name of element tripped/restored: 33kV Incomer -1 restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230804042635 2023/08/04 04:26:36 1) Name of the substation and Time: 220kV Wazirpur @03:25Hrs 2) Name of element tripped/restored: 100 MVA Tx-1 Tripped 3) Relay Annunciation: Differential Trip 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: Load normal through Bus Coupler. 6) Any other relevant information: Approx Load was 56MW Regards, Delhi SLDC 20230803223021 2023/08/03 22:30:23 1) Name of the substation and Time: Trauma Centre 2) Name of element tripped/restored: At 21:17Hrs 33KV I/C-I and 33KV I/C-II tripped on E/F. Load affected was approx. 60MW. At 21:48Hrs 33KV I/C-II charged but tripped without indication with 33KV Safdarjung feeder. At 21:49Hrs 33KV I/C-II charged and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230803160637 2023/08/03 16:06:38 1) Name of the substation and Time: 220kV PPK-III, 14:17 Hrs 2) Name of element tripped/restored: 66kV I/C-II put off due to heavy sparking on 66kV Bus- bar-I, B-Ph bus isolator 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 14:27 Hrs 66kV I/C-II shifted on 66kV Bus-II and 66kV B/c put ON, At 14:35 to 14;41 Hrs 66kV all feeders put ON and system normalized 6) Any other relevant information: Apprx. 138MW load affected Regards, Delhi SLDC 20230801172827 2023/08/01 17:28:28 1) Name of the substation and Time: 220kV Geeta Colony @ 16:50Hrs 2) Name of element tripped/restored: 33kV Krishna. Nagar 1 and 2 Tripped 3) Relay Annunciation: Krishna Nagar 1 : Dist. , R -Ph. 13.35kA. K. Nagar 2:- 86 , L3-E, Fault Current R Ph. 13.57kA, Y - Ph - 2.55kA, B- Ph. 13.78kA. 4) Details of physically damaged equipment: B phase PT Of K. Nagar-II damaged and caught fire. 5) Immediate corrective/system normalization steps performed: Coordinated with DISCOM 6) Any other relevant information: Load on ckts was 10MW each approx Regards, Delhi SLDC 20230801170238 2023/08/01 17:02:39 1) Name of the substation and Time: 220kV PPK-II @ 16:50 2) Name of element tripped/restored: 220kV Bamnauli -I tripped 3) Relay Annunciation: Zone-1, B- Phase, Differential, 86ABC, 1.4kM 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230801145600 2023/08/01 14:56:00 1) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 10:55Hrs 100MVA 220/66KV T/F-2 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230801021812 2023/08/01 02:18:12 1) Name of the substation and Time: 33kV M/Moth, 1:40 Hrs 2) Name of element tripped/restored: 33kV I/C-I and II charged at 2:10 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 2:15 Hrs 33kV all feeders has been charged except 33kV I/C-III and cour complex -I and II Regards, Delhi SLDC 20230801020815 2023/08/01 02:08:16 1) Name of the substation and Time: 220kV M/moth, 01:40Hrs 2) Name of element tripped/restored: Bus bar-I and II with 33 kV I/C-I,II and III and 33kV court complex -I due 33kV court complex -II jumper snaped /damaged of Y-Ph Bus-I jumper 3) Relay Annunciation: O/C and E/F On 33kV court complex -II 4) Details of physically damaged equipment: 33kV court complex -II jumper snaped /damaged of Y-Ph Bus-I jumper 5) Immediate corrective/system normalization steps performed: Infored to BRPL for load chage over 6) Any other relevant information: Approx. 140 MW load affected Regards, Delhi SLDC 20230731201306 2023/07/31 20:13:07 1) Name of the substation and Time: 220kV Okha, 20:00 Hrs 2) Name of element tripped/restored: 100 MVA tx-II with 66kV I/C-II 3) Relay Annunciation: 186, PRV 2, F8 and F9 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 20:05Hrs 66kV B/C put and system normalized 6) Any other relevant information: Approx. 21 MW load affected Regards, Delhi SLDC 20230731120253 2023/07/31 12:02:54 1) Name of the substation and Time: 220 kV PARKSTREET 11.15 2) Name of element tripped/restored: I/C -4 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 47 MW EFFECTED FOR 7 MINTS as in formed by BYPL 6) Any other relevant information: OPRN STAFF CHARGED INCOMMER WITHOUT CHARGING CLEARANCE AND WITHOUT INFORMING SYSTEM OPERATION Regards, Delhi SLDC 20230731120025 2023/07/31 12:00:26 1) Name of the substation and Time: 220 kV Parkstreet 10.27 HRS 2) Name of element tripped/restored: 100 mva tr-4 ,i/c-4 3) Relay Annunciation: OC,YB PH ,BIRDAGE NOTICED 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230730151146 2023/07/30 15:13:20 1) Name of the substation and Time: test 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: test Regards, Delhi SLDC 20230730144640 2023/07/30 14:46:40 1) Name of the substation and Time: 220KV Gopal Pur, 14:11Hrs. 2) Name of element tripped/restored: 220KV Mandaula-I tripped 3) Relay Annunciation: Zone-1, 86A, 86B, 86C, B-Phase Trip and Fault Current, B-Phase - 1.197KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV SOW-II charged at 14:15Hrs. and supply restored 6) Any other relevant information: Total load effected - 65MW for 04 Minutes Regards, Delhi SLDC 20230730095146 2023/07/30 09:51:47 1) Name of the substation and Time: test 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: test Regards, Delhi SLDC 20230730084208 2023/07/30 08:42:09 1) Name of the substation and Time: test message 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: test Regards, Delhi SLDC 20230729143659 2023/07/29 14:36:59 1) Name of the substation and Time: At Gazipur(13:11hrs) 2) Name of element tripped/restored: 220KV Maharanibagh-I 3) Relay Annunciation: 86RYB,zone-I,397.4m. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: none. 6) Any other relevant information: none. Regards, Delhi SLDC 20230729143526 2023/07/29 14:35:27 1) Name of the substation and Time: At VasantKunj(13:46hrs) 2) Name of element tripped/restored: 220KV RK Puram ckt-II. 3) Relay Annunciation: auto trip, zone-I, Y phase, D/P. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: none. 6) Any other relevant information: none. Regards, Delhi SLDC 20230729143343 2023/07/29 14:33:43 1) Name of the substation and Time: At Gazipur(12:35hrs) 2) Name of element tripped/restored: 220KV Maharanibagh ckt-I 3) Relay Annunciation: 86RYB, Zone-I, 397.4m. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other ckt. 6) Any other relevant information: CVT of Maharanibagh was available at Gazipur end. Regards, Delhi SLDC 20230729141734 2023/07/29 14:17:35 1) Name of the substation and Time: At VasantKunj(12:28hrs) 2) Name of element tripped/restored: 220KV RK Puram ckt-II 3) Relay Annunciation: auto trip, Y phase, zone-I, D/P. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV Mehrauli-II put ON and load normalized. 6) Any other relevant information: CVT of RK Puram-II was available at Vasant Kunj end. Regards, Delhi SLDC 20230729141329 2023/07/29 14:13:30 1) Name of the substation and Time: At Maharanibagh(12:26hrs) 2) Name of element tripped/restored: 220KV Lodi Road ckt-II 3) Relay Annunciation: Y phase, zone-I, L2-E. 4) Details of physically damaged equipment: Y phase LA burst. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: Ckt did not trip at Lodi Road end, however 220KV Maharanibagh ckt-I had tripped at Lodi Road which was revived at 12:50hrs. Regards, Delhi SLDC 20230728213400 2023/07/28 21:34:01 1) Name of the substation and Time: At 400KV Mundka, 16:56 Hrs 2) Name of element tripped/restored: 400kV bus-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 19:49 Hrs charged Regards, Delhi SLDC 20230728172840 2023/07/28 17:28:41 1) Name of the substation and Time: At 400KV Mundka(16:56hrs) 2) Name of element tripped/restored: 400KV Bus-II. 3) Relay Annunciation: LBB operated. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by bus-I. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230728165553 2023/07/28 16:55:54 1) Name of the substation and Time: At 220KV Pragati(16:42hrs) 2) Name of element tripped/restored: 220KV IP ckt-II 3) Relay Annunciation: D/P, E/F, C-N phase. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Pragati. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230728160453 2023/07/28 16:04:54 1) Name of the substation and Time: At Pragati(15:08hrs) 2) Name of element tripped/restored: 220KV IP ckt-II. 3) Relay Annunciation: D/P,Z-I, 2.695KM, C-N phase fault. 4) Details of physically damaged equipment: B phase breaker middle clamp damaged at Pragati end. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Pragati S/S. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230727212834 2023/07/27 21:28:35 1) Name of the substation and Time: 220 kV Gazipur @21.08 2) Name of element tripped/restored: 66 kV I/C -3 3) Relay Annunciation: PUT OFF DUE TO GAS PRESSURE LOW ALARM TO AVOID CB LOCKOUT 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230727184909 2023/07/27 18:49:10 1) Name of the substation and Time: 220KV Sarita Vihar, 18:15Hrs. 2) Name of element tripped/restored: 220KV Pragati tripped off (line already isolated at Tower No. 12A) 3) Relay Annunciation: Zone-1, R-Phase Trip, Y-Phase Trip, 86A, 86B, 186A, 186B, Fault Location - 4.474Km and Fault Current, R-Phase - 17.04KA and Y-Phase - 16.85KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to 220KV Sarita Vihar to check the Ckt 6) Any other relevant information: No load effected as Maharani Bagh-Sarita Vihar Ckt was directly looped to Pragati-Sarita Vihar Ckt at Tower No. 12A and only 220KV Sarita Vihar-Pragati Ckt upto Tower No. 12A tripped Regards, Delhi SLDC 20230727142459 2023/07/27 14:24:59 1) Name of the substation and Time: At14:20HRS 220KV M.Moth 2) Name of element tripped/restored: 220KV TUGB-I ckt restored/energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KC TUGB-I ckt restored/energized atv 14:20HRS Regards, Delhi SLDC 20230727141651 2023/07/27 14:16:52 1) Name of the substation and Time: At 13:55 HRS 220KV M.Moth 2) Name of element tripped/restored: 220KV TUGB ckt-I tripped at M.Moth end.CVT appears 3) Relay Annunciation: Facia CB Trip 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At14:04 HRS 220KV Bus Coupler closed system normalised 6) Any other relevant information: Load affected approx 40MW Regards, Delhi SLDC 20230727084956 2023/07/27 08:49:57 1) Name of the substation and Time: Rajghat 2) Name of element tripped/restored: At 06:25Hrs 33KV I/C-I tripped on O/C and E/F and 33KV B/C also got tripped without indication. Grid staff have reported electrocution of monkey. Load affected was 29MW. At 07:10Hrs 33KV I/C-I charged and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230726120727 2023/07/26 12:07:28 1) Name of the substation and Time: 220kV K. Gate, 11:45 Hrs 2) Name of element tripped/restored: 220kV SOW-I 3) Relay Annunciation: 186 AB, autoreclosed operated and CVT appear 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 11:47 Hrs 220 KV B/C cloased and system is noramalized and 220kV SOW-I also charged at 12:00 Hrs 6) Any other relevant information: Approx. 17 MW load affected only for 2 minuts Regards, Delhi SLDC 20230725083425 2023/07/25 08:34:26 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Real time data and load not updating kindly restore the data . 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20230724174629 2023/07/24 17:46:30 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Real time data and load not updating from last half an hour on wards kindly restore the data 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20230724144247 2023/07/24 14:42:48 1) Name of the substation and Time: 220kV BTPS @ 14:17HRS 2) Name of element tripped/restored: 220kV Sarita Vihar-II restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230724121058 2023/07/24 12:10:59 1) Name of the substation and Time: 220kV BTPS @ 10:54Hrs 2) Name of element tripped/restored: 220kV Sarita Vihar -II Tripped without indication/relay. Ckt Closed @ 11:56 Hrs then Tripped again @ 11:57Hrs w/o indication. 3) Relay Annunciation: No Relay 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: Not Tripped at Sarita Vihar End.Manually Put Off Regards, Delhi SLDC 20230723210656 2023/07/23 21:06:58 1) Name of the substation and Time: 220kV Gopalpur, 20:21Hrs 2) Name of element tripped/restored: 220kV SBZ Ckt-I(No load) 3) Relay Annunciation: Zone-I, R,Y and B-Phase, fault located-2.826KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20230723210104 2023/07/23 21:01:05 1) Name of the substation and Time: 220 kV Gopalpur, 20:21 Hrs 2) Name of element tripped/restored: 220 kV Mandola Ckt-I and II, CVT disappeared from 400kV Mandola Grid 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 20:26 hrs, 220kV SOW Ckt-I and II closed and system normalized 6) Any other relevant information: Approx. load 237 MW affected included 220kV SBZ (due to supply failed from Gopalpur) Regards, Delhi SLDC 20230723205420 2023/07/23 20:54:22 1) Name of the substation and Time: 220kV Narela, 20:21 Hrs 2) Name of element tripped/restored: 220 kV Mandola Ckt-I and II, CVT disappeared from 400kV Mandola Grid 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 20:24 Hrs, 220kV DSIDC Ckt-I and II closed and system normalized 6) Any other relevant information: approx. load affected 138 MW Regards, Delhi SLDC 20230721162402 2023/07/21 16:24:03 1) Name of the substation and Time: At Narela(15:54hrs) 2) Name of element tripped/restored: 220KV Mandola ckt-II 3) Relay Annunciation: Y phase zone-I. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230721161833 2023/07/21 16:18:34 1) Name of the substation and Time: At Okhla(16:10hrs) 2) Name of element tripped/restored: 220KV BTPS ckt-II 3) Relay Annunciation: B phase , zone-I 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other parallel line. 6) Any other relevant information: none. Regards, Delhi SLDC 20230721161644 2023/07/21 16:16:45 1) Name of the substation and Time: At Narela(12:35hrs) 2) Name of element tripped/restored: 220KV Mandola ckt-II 3) Relay Annunciation: Y phase zone-I 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV DSIIDC ckt-I and II put ON. 6) Any other relevant information: none. Regards, Delhi SLDC 20230721161454 2023/07/21 16:14:55 1) Name of the substation and Time: At Narela(12:30hrs) 2) Name of element tripped/restored: 220KV Mandola ckt-I 3) Relay Annunciation: R phase zone-I 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load taken by other parallel line. 6) Any other relevant information: none. Regards, Delhi SLDC 20230721151017 2023/07/21 15:10:19 1) Name of the substation and Time: At Peeragarhi(14:08hrs) 2) Name of element tripped/restored: 220KV Wazirpur ckt-I 3) Relay Annunciation: tripped on 86. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV Peeragarhi-II put ON at Wazirpur and load normalized. 6) Any other relevant information: 144MW load affected at Wazirpur station. Regards, Delhi SLDC 20230721121445 2023/07/21 12:14:45 1) Name of the substation and Time: At Okhla(11:09) 2) Name of element tripped/restored: 220KV BTPS ckt-II. 3) Relay Annunciation: gen trip, Z-I, B phase, 11.579KA, 5.43KM. 4) Details of physically damaged equipment: NA. 5) Immediate corrective/system normalization steps performed: Load taken by other parallel ckt. 6) Any other relevant information: none. Regards, Delhi SLDC 20230721061744 2023/07/21 06:17:45 1) Name of the substation and Time: At 06:01 HRS 220KV Pragati 2) Name of element tripped/restored: 160MVA-II with 66KV I/C No-II 3) Relay Annunciation: 86,30,PRV,96C 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Mo load effected at GTPS end 6) Any other relevant information: - Regards, Delhi SLDC 20230720173613 2023/07/20 17:36:13 1) Name of the substation and Time: At Bawana(17:30)hrs 2) Name of element tripped/restored: 220KV Shalimar bagh ckt-II. 3) Relay Annunciation: D/P, B phase, zone-II, 13.22KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C closed at Shalimar bagh station. 6) Any other relevant information: none. Regards, Delhi SLDC 20230720171329 2023/07/20 17:13:30 1) Name of the substation and Time: At Gopalpur(15:30hrs) 2) Name of element tripped/restored: 100 MVA-I 3) Relay Annunciation: 30(OTI) 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 33KV B/C closed. 6) Any other relevant information: none. Regards, Delhi SLDC 20230720153227 2023/07/20 15:32:28 1) Name of the substation and Time: At Bawana(14:45hrs) 2) Name of element tripped/restored: 220KV Shalimar bagh ckt-II. 3) Relay Annunciation: B phase trip, Z-II, 13.22KM. 4) Details of physically damaged equipment: not yet reported. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON. 6) Any other relevant information: No tripping at Shalimar bagh end. Regards, Delhi SLDC 20230720153034 2023/07/20 15:30:35 1) Name of the substation and Time: At Bawana(14:34hrs) 2) Name of element tripped/restored: 220KV Shalimarbagh ckt-I. 3) Relay Annunciation: R phase trip, D/P, 10.67KM. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON. 6) Any other relevant information: none. Regards, Delhi SLDC 20230720152105 2023/07/20 15:21:06 1) Name of the substation and Time: At Gopalpur(12:28hrs) 2) Name of element tripped/restored: 100MVA-I(220/33KV) transformer. 3) Relay Annunciation: 30 OTI relay. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 33KV B/C put ON. 6) Any other relevant information: permit issued. Regards, Delhi SLDC 20230720122204 2023/07/20 12:22:05 1) Name of the substation and Time: At 400KV Bawana(11:36hrs) 2) Name of element tripped/restored: 220KV Shalimarbagh ckt-I 3) Relay Annunciation: D/P, 10.67KM, 8.414KAfault current, R phase trip . 4) Details of physically damaged equipment: Not yet reported. 5) Immediate corrective/system normalization steps performed: 220KV B/C along with 220KV Rohini ckt-I and II put ON at Shalimar bagh end, load restored. 6) Any other relevant information: No tripping at Shalimarbagh end. Regards, Delhi SLDC 20230720084413 2023/07/20 08:44:14 1) Name of the substation and Time: 220 kv Dev Nagar @ 19.07.2023 17.05 hrs 2) Name of element tripped/restored: 220 kv Park street 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230720084351 2023/07/20 08:43:52 1) Name of the substation and Time: 220 kv Dev Nagar @ 19.07.2023 17.05 hrs 2) Name of element tripped/restored: 220 kv Park street 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230720083646 2023/07/20 08:36:47 1) Name of the substation and Time: 220 kv dev nagar @17.05 hrs 2) Name of element tripped/restored: 220 kv park street ckt 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230719102740 2023/07/19 10:27:41 1) Name of the substation and Time: At 10:06 HRS 220KV Devnagar 2) Name of element tripped/restored: 220KV Devnagar-parkstreet Ckt 3) Relay Annunciation: Park street end o/c HT1,O/C Y-ph 220KV Nagar Side Power swing 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Single ckt,Advised DISCOM to shift load from station 6) Any other relevant information: Approx 46MW Load effected Regards, Delhi SLDC 20230718154110 2023/07/18 15:41:18 1) Name of the substation and Time: 220 KV Okhla :-14:57 Hrs 2) Name of element tripped/restored: 33 I/C-3,4,5 With 33 KV NP-I(Y ph poie damage) 3) Relay Annunciation: 33KV I/C-5 any trip,O/C HT-1,O/C Y and B-ph 33KV I/C-4 any trip,O/C HT-1,O/C Y-ph 33KV I/C-3 any trip,O/C HT-1,O/C Y-ph 4) Details of physically damaged equipment: 33KV Y-phase Pole Broken/Damage of 33KV Nehru place-I 5) Immediate corrective/system normalization steps performed: 15:35 HRS 33 I/C-3,4,5 Energized and system became normal except 33KV nehru place-I 6) Any other relevant information: Approx 102MW Load effected Regards, Delhi SLDC 20230717201329 2023/07/17 20:13:29 1) Name of the substation and Time: At Kashmere Gate(18:51hrs) 2) Name of element tripped/restored: 100MVA-1(220/33KV)Transformer. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: Transformer energized through 220KV South of Wazirabad ckt-1. Regards, Delhi SLDC 20230717171104 2023/07/17 17:11:05 1) Name of the substation and Time: PPK-2 2) Name of element tripped/restored: At 17:08Hrs 220KV Bamnnauli ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230717145532 2023/07/17 14:55:33 1) Name of the substation and Time: PPK-2 2) Name of element tripped/restored: 220KV Bamnauli ckt-I tripped at 14:43Hrs. No load was affected. 3) Relay Annunciation: Relay at PPK-2 end are Z-1 BC-phase 1.7km. Relay at Bamnauli end are Z-1 BC-phase 8.2km Ib=7.2KA Ic=7KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230716063208 2023/07/16 06:32:09 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) SCADA Data i.e Half Hourly sheet, Hourly and peak load details data files have been freezed from 00:00 Hrs dated 16/07/2023. It is,therefore requested to rectify the error for smooth functioning of Scheduling Desk since this data is used to prepare the Energy Report and CEA report dated 16/07/2023. 2) -- 3) -- 4) -- 5) -- 6) -- Regards, Delhi SLDC 20230715182814 2023/07/15 18:28:15 1) Name of the substation and Time: 400 kV Harsh Vihar, 11:55 hrs on 20.01.2023 2) Name of element tripped/restored: 220kV PVR Ckt-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 18:23 Hrs( 15.07.2023) charged on no load from HVR end Regards, Delhi SLDC 20230715160958 2023/07/15 16:09:59 1) Name of the substation and Time: 220 KV KGT @15.48 2) Name of element tripped/restored: 100 MVA TR-2 and IC/2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230715155030 2023/07/15 15:50:32 1) Name of the substation and Time: 220 KV KASHMIRIGATE @15.20 2) Name of element tripped/restored: 220 KV SOW CKT-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230714072558 2023/07/14 07:25:59 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Reminder:-SCADA Data i.e Half Hourly sheet, Hourly and peak load details data files have been freezed from 00:00 Hrs dated 13/07/2023. It is,therefore requested to rectify the error for smooth functioning of Scheduling Desk since this data is used to prepare the morning message (14.07.2023), Energy Report and CEA report dated 13/07/2023. 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20230713230351 2023/07/13 23:03:52 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: At 22:38Hrs 160MVA T/F-1 tripped on E/F. Load affected was approx. 50MW. At 22:56Hrs 160MVA T/F-1 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230713230036 2023/07/13 23:00:37 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) SCADA Data i.e Half Hourly sheet, Hourly and peak load details data files have been freezed from 00:00 Hrs dated 13/07/2023. It is,therefore requested to rectify the error for smooth functioning of Scheduling Desk since this data is used to prepare the Energy Report and CEA report dated 13/07/2023. 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20230713185233 2023/07/13 18:52:34 1) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: At 17:58Hrs 100MVA T/F-2 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230713185044 2023/07/13 18:50:44 1) Name of the substation and Time: Sabzi Mandi 2) Name of element tripped/restored: At 18:37Hrs 100MVA T/F-2 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230713105051 2023/07/13 10:50:52 1) Name of the substation and Time: At Kashmere Gate(10:37hrs) 2) Name of element tripped/restored: All 220KV ,33KV and 11KV breakers . 3) Relay Annunciation: Breakers put off manually. 4) Details of physically damaged equipment: Station yard filled with Yamuna water, after breaching all the defence mechanisms. 5) Immediate corrective/system normalization steps performed: Discoms and DMRC already asked to C/O load. 6) Any other relevant information: none. Regards, Delhi SLDC 20230713001135 2023/07/13 00:11:36 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Due to some technical issue in SCADA, Delhi load and Delhi Generations are not traceable w.e.f. 16:30 hrs for Dt.12.07.2023. 2) Half hourly sheet is showing a constant Delhi load = 5564 MW and Delhi generation =237 MW w.e.f. 16:30 hrs. Due to this Energy consumption report consisting of Half Hourly sheet, Hourly Sheet and GENCO sheet cannot be prepared correctly. Also there will be problem in getting records for Morning SMS at 06:30 hrs of Dt.13.07.2023. 3) Concerned official is requested to resolve the issue as soon as possible on priority. 4) - 5) - 6) - Regards, Delhi SLDC 20230712204253 2023/07/12 20:42:54 1) Name of the substation and Time: 220 KV Dail At 19:56 2) Name of element tripped/restored: 160 MVA Tx-1 with 66 KV I/C-1 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 160 MVA Tx-1 with 66 KV I/C-1 is enerzied at 19:56 Hrs and system is normal Regards, Delhi SLDC 20230712154430 2023/07/12 15:44:30 1) Name of the substation and Time: At Okhla(14:55hrs) 2) Name of element tripped/restored: 66KV I/C-I 3) Relay Annunciation: O/C, stage-I, Y phase. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 66KV B/C put on. 6) Any other relevant information: none. Regards, Delhi SLDC 20230712154036 2023/07/12 15:40:37 1) Name of the substation and Time: At Okhla(14:10hrs) 2) Name of element tripped/restored: 66KV I/C-I 3) Relay Annunciation: O/C, stage-I, Y phase. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 66KV B/C put On and load normalized. 6) Any other relevant information: none. Regards, Delhi SLDC 20230712144350 2023/07/12 14:43:51 1) Name of the substation and Time: At DIAL(14:18hrs) 2) Name of element tripped/restored: 160MVA-I(220/66KV Transformer) 3) Relay Annunciation: general trip,differential trip, RYB phase, 86LV. 4) Details of physically damaged equipment: 66KV Y phase LA burst. 5) Immediate corrective/system normalization steps performed: 66KV B/C did not trip. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230711214523 2023/07/11 21:45:24 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Loading graph/curve not updating with chainging load in scada system. and Max/Min loading also not updating 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20230711200914 2023/07/11 20:09:15 1) Name of the substation and Time: 220KV Gopal Pur, 20:04Hrs. 2) Name of element tripped/restored: 220KV Mandola-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230711180442 2023/07/11 18:04:42 1) Name of the substation and Time: 400 Kv munduka @17.25 2) Name of element tripped/restored: 160 mva tr-3 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230711180212 2023/07/11 18:02:13 1) Name of the substation and Time: 400 kv munduka @16.49 2) Name of element tripped/restored: 160 MVA tr-3 ALONG WITH I/C 3) Relay Annunciation: 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: 160 MVA TR- 3 normalized @ 17.25 .No load effected Regards, Delhi SLDC 20230711171148 2023/07/11 17:11:48 1) Name of the substation and Time: At 17:05 HRS 220KV Najafgarh 2) Name of element tripped/restored: 220KV Bamnauli-II energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV Bamnauli-II energized and system become normal Regards, Delhi SLDC 20230711152030 2023/07/11 15:20:30 1) Name of the substation and Time: At 14:00 HRS 220KV Najfgarh 2) Name of element tripped/restored: 220KV Bamnauli-II tripped 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Corrigendum message regarding earlier message sent of 220KV Najafgarh.It was 220KV Bamnauli-II instead of 220KV Bamnauli-I Regards, Delhi SLDC 20230711143513 2023/07/11 14:35:14 1) Name of the substation and Time: At 14:08 HRS 220KV Gopalpur 2) Name of element tripped/restored: 220KV Mandola-I 3) Relay Annunciation: Distance operated zone-I,R-phase trip,Start An ph,Fault located -196.5KM Ia 958.8A,Ib 813.2A,Ic 1.180KA,In 2.939KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 14:10 HRS 220KV SOW ckt-II closed and normalised 6) Any other relevant information: Approx 83MW Load effected Regards, Delhi SLDC 20230711142930 2023/07/11 14:29:31 1) Name of the substation and Time: At 14:00 HRS 220KV NJF 2) Name of element tripped/restored: 220KV Bamnauli-I 3) Relay Annunciation: NJF Distance protection B-Phase 400KV Bamnauli end Differential trip B-phase,Autoreclose,CB Pole discrepancy 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: AT 14:10 HRS 220KV Mundka ckt closed and normalised 6) Any other relevant information: Approx 90MW Load effected Regards, Delhi SLDC 20230711120334 2023/07/11 12:03:35 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Due to some technical issue the actual generation of CCGT Bawana was displayed as 9134 MW at around 09:50 for Dt. 11.07.2023. This inturn makes Delhi Load erroneously as 13803 MW. However the actual Delhi Load at 09:50 hrs was around 4670 MW and actual generation of CCGT Bawana was 0 MW 2) - 3) - 4) - 5) - 6) - Regards, Delhi SLDC 20230710225831 2023/07/10 22:58:33 1) Name of the substation and Time: 220kV Masjid Moth @ 22:52Hrs 2) Name of element tripped/restored: 33kV Incomer -III which was tripped@22:30Hrs restored@22:52Hrs 3) Relay Annunciation: Without any relay indication 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: 15MW Load Normal at same time @22:30Hrs through 33kV Bus-coupler. 6) Any other relevant information: NA Regards, Delhi SLDC 20230710194015 2023/07/10 19:40:16 1) Name of the substation and Time: 220kV Devnagar @ 18:28 2) Name of element tripped/restored: 33kV Bus Bar- II tripped with Tripping of 33kV Gangaram Feeder. 3) Relay Annunciation: LBB Optd. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Feeders shifted to other Bus @ 18:57Hrs 6) Any other relevant information: NA Regards, Delhi SLDC 20230710115456 2023/07/10 11:54:56 1) Name of the substation and Time: 220 KV Dial At 03:45 Hrs 2) Name of element tripped/restored: 160 MVA Tx-II Energized At 11:43 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 160 MVA Tx-II Energized At 11:43 Hrs system normal Regards, Delhi SLDC 20230710101104 2023/07/10 10:11:05 1) Name of the substation and Time: 220 KV Rohini-I At 10:02 Hrs 2) Name of element tripped/restored: 66 KV I/C-III and IV Energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: System Normal Regards, Delhi SLDC 20230710093327 2023/07/10 09:33:28 1) Name of the substation and Time: At Rohini-I(08:53hrs) 2) Name of element tripped/restored: 66KV I/C-III and IV. 3) Relay Annunciation: O/C and E/F. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 66KV B/C put ON load normalized. 6) Any other relevant information: none. Regards, Delhi SLDC 20230710093309 2023/07/10 09:33:09 1) Name of the substation and Time: At Rohini-I(08:53hrs) 2) Name of element tripped/restored: 66KV I/C-III and IV. 3) Relay Annunciation: O/C and E/F. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 66KV B/C put ON load normalized. 6) Any other relevant information: none. Regards, Delhi SLDC 20230710091041 2023/07/10 09:10:42 1) Name of the substation and Time: At 220KV Masjid Moth(06:05hrs) 2) Name of element tripped/restored: 33KV I/C-III. 3) Relay Annunciation: Tripped without indication. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 33KV B/C put ON and load energized. 6) Any other relevant information: none. Regards, Delhi SLDC 20230710090838 2023/07/10 09:08:39 1) Name of the substation and Time: At 220KV DIAL(03:45hrs) 2) Name of element tripped/restored: 160MVA-II 3) Relay Annunciation: differential protection, R phase, REF HV relay. 4) Details of physically damaged equipment: R phase LA damaged. 5) Immediate corrective/system normalization steps performed: 66KV B/C was in ON position. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230709113622 2023/07/09 11:36:23 1) Name of the substation and Time: 220kV Okhla @ 11:05 Hrs 2) Name of element tripped/restored: 66kV Incomer-1,2 got tripped @ 10:35 due to Flashover in 11kV Bus Section. 66kV I/c-II restored@10:50, 66kV I/c-I restored@11:05, 11kV elemnents yet to be restored. 3) Relay Annunciation: 66kV I/C-1,2 tripped on O/C- Y and B Ph. 4) Details of physically damaged equipment: 11kV Bus section Flashed. 5) Immediate corrective/system normalization steps performed: Through Inspection of Yard/elements @ Put on 6) Any other relevant information: 11kV Fault travelled to 66kV System. Regards, Delhi SLDC 20230708205224 2023/07/08 20:52:25 1) Name of the substation and Time: 220KV Rajghat, 20:35Hrs. 2) Name of element tripped/restored: 100MVA-II along with 33KV I/C-II charged 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: 100MVA-II along with 33KV I/C-II charged by Operation Staff of 220KV Rajghat without any instruction/consent of System Opeartion, SLDC, Minto Road. Regards, Delhi SLDC 20230708190741 2023/07/08 19:07:42 1) Name of the substation and Time: 220KV Rajghat, 18:58Hrs. 2) Name of element tripped/restored: 100MVA-II along with 33KV I/C-II tripped 3) Relay Annunciation: Without any indication 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230708175753 2023/07/08 17:57:54 1) Name of the substation and Time: 220KV Gopal Pur, 17:50Hrs. 2) Name of element tripped/restored: 220KV Sabji Mandi-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230708172844 2023/07/08 17:28:45 1) Name of the substation and Time: 220KV Gopal Pur, 17:01Hrs. 2) Name of element tripped/restored: 220KV Sabji Mandi-I (Charged at no-load) 3) Relay Annunciation: Pole Discripancy 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230708164820 2023/07/08 16:48:21 1) Name of the substation and Time: Bamnauli 2) Name of element tripped/restored: At 15:10Hrs 220KV PPK-3 ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230708131727 2023/07/08 13:17:28 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Due to Heavy Rain water has been entered into SLDC control Room and flowing from AC Ducts and Switchboards and cable trenches. Kindly look into the matter as soon as possible to avoid any mishappening and loss of men and material. 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20230708113103 2023/07/08 11:31:04 1) Name of the substation and Time: Bamnauli 2) Name of element tripped/restored: At 11:12Hrs 220KV PPK-3 ckt-II tripped on C-phase 3.4km If=18.4KA. Ckt was at No load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230707151925 2023/07/07 15:19:26 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Day Peak DEMAND DATA NOT UPDATATING in scada .KINDLY resolve 2) Day Peak DEMAND DATA NOT UPDATATING in scada .KINDLY resolve 3) Day Peak DEMAND DATA NOT UPDATATING in scada .KINDLY resolve 4) Day Peak DEMAND DATA NOT UPDATATING in scada .KINDLY resolve 5) Day Peak DEMAND DATA NOT UPDATATING in scada .KINDLY resolve 6) Day Peak DEMAND DATA NOT UPDATATING in scada .KINDLY resolve Regards, Delhi SLDC 20230707101919 2023/07/07 10:19:20 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) IP,RKP,mehrouli,Knjhawala,and many other substations SCADA voice communication out of srvice.due to which system oprations functions are effected.kindly resolve . 2) NA 3) NA 4) NA 5) NA 6) NA Regards, Delhi SLDC 20230706213648 2023/07/06 21:36:49 1) Name of the substation and Time: At Sarita Vihar(20:40hrs) 2) Name of element tripped/restored: 220KV Maharani Bagh 3) Relay Annunciation: R-N, zone-I, 7.643Km. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Load not affected. 6) Any other relevant information: none. Regards, Delhi SLDC 20230706182128 2023/07/06 18:21:29 1) Name of the substation and Time: At 220KV Sarita Vihar(17:49hrs) 2) Name of element tripped/restored: 220KV Maharani bagh ckt. 3) Relay Annunciation: R-N, Zone-I, 7.643KM, Ia-14.44KA. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: Line charged till Tower 12A, where jumpers are in open condition . 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230705095647 2023/07/05 09:56:49 1) Name of the substation and Time: At Pappankalan-II(09:38hrs). 2) Name of element tripped/restored: 100MVA-II(220/66KV) transformer. 3) Relay Annunciation: SPR, LBB lockout. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: load met by other transformer. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230705080430 2023/07/05 08:04:31 1) Name of the substation and Time: 220kV SVR, 07:45 Hrs 2) Name of element tripped/restored: 220kV Pragati Ckt 3) Relay Annunciation: Zone-1, C-Ph trip, 86 ABC, Dist-7.205kM, RYB-Ph trip, Ic-14.08KA, E/F 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Line was only Charged Regards, Delhi SLDC 20230704210847 2023/07/04 21:08:48 1) Name of the substation and Time: 400kV Mundka, 14:53 Hrs 2) Name of element tripped/restored: 315 MVA Tx-IV 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 20:57 Hrs charged Regards, Delhi SLDC 20230704155309 2023/07/04 15:53:10 1) Name of the substation and Time: At Mundka(14:53hrs) 2) Name of element tripped/restored: ICT-IV and 160MVA-II along with 66KV bus section 1 and 2. 3) Relay Annunciation: tripping relay 86 on 315MVA ICT-IV, SPS operated on 220KV I/C-IV, 160MVA-II and 66KV bus section I and II. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: Load of 66KV Bus I, II and III dissapeared. Regards, Delhi SLDC 20230704132811 2023/07/04 13:28:12 1) Name of the substation and Time: At 220KV Pappankalan-II(12:20hrs) 2) Name of element tripped/restored: 100MVA-II 3) Relay Annunciation: SPR and LBB protection relay. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: load met by other transformer. 6) Any other relevant information: none. Regards, Delhi SLDC 20230704101701 2023/07/04 10:17:02 1) Name of the substation and Time: At Pappankalan-II(09:53hrs) 2) Name of element tripped/restored: 100MVA-II(220/66KV) Transformer. 3) Relay Annunciation: SPR relay, LBB lockout. 4) Details of physically damaged equipment: none, till the time of reporting. 5) Immediate corrective/system normalization steps performed: Load shifted on other running parallel transformer. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230703173926 2023/07/03 17:39:27 1) Name of the substation and Time: At Bawana(16:50hrs) 2) Name of element tripped/restored: 220KV Kanjhawla-I restored at 16:50hrs. and 100MVA-II restored at 16:08hrs Kanjhawla. 3) Relay Annunciation: R and Y phase ,zone-I on Kanjhawla at Bawana. AND E/F on 100MVA-II at Kanjhawla. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230703153012 2023/07/03 15:30:13 1) Name of the substation and Time: 400kV Bawana , 14:50 Hrs 2) Name of element tripped/restored: 220kV KNJ-I at BWN end and 100 MVA Tx-II and 220kV bus-I dead at KNJ end 3) Relay Annunciation: Zone-I, R and Y-Ph, Axilary relay ABC on 220kV KNJ-I Ckt at BWN end and E/F,86 on 100 MVA Tx-II at KNJ end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 14:55 Hrs system is normal by put on 220kV B/C at KNJ end 6) Any other relevant information: Approx. 72 MW load affected Regards, Delhi SLDC 20230703131940 2023/07/03 13:19:40 1) Name of the substation and Time: 400kV Bawana, 12:28 Hrs 2) Name of element tripped/restored: 220kV SMB-I with bus-I dead 3) Relay Annunciation: Master relay 86, Axilary relays group-1 and 2 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 12:32 hrs system is normal through 220kV RHN-I and II 6) Any other relevant information: Affected 220kV S/Stn SGTN, WZP, DMRC for 4 Minuts only and affected approx. load 144 MW Regards, Delhi SLDC 20230702221032 2023/07/02 22:10:33 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 17:38Hrs 220kv Panipat ckt-II tripped on B-phase Z-1 32.1km If=4.1KA. CVT was coming at Narela end. No load was affected. At 18:50Hrs ckt charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230702151215 2023/07/02 15:12:16 1) Name of the substation and Time: At 220KV Pragati:13:23 Hrs 2) Name of element tripped/restored: 160MVA T/F-I on no load 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 160MVA T/F-I on no load at 15:04 hrs 6) Any other relevant information: Approx. load affected 33MW Regards, Delhi SLDC 20230702144919 2023/07/02 14:49:20 1) Name of the substation and Time: At 220KV Pragati, 13:23 Hrs 2) Name of element tripped/restored: 160MVA T/F-I and II 3) Relay Annunciation: On 160MVA T/F-I- 86, LBB, Differential RYB, HV REF, Its I/C manual tripped . On 160MVA T/F-II-86, 96T, Inter tripped 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 14:21 (160MVA T/F-II charged on no load) 6) Any other relevant information: conveyed to DMRC and discom for load trasfer to other S/Stn/source Regards, Delhi SLDC 20230701164334 2023/07/01 16:43:35 1) Name of the substation and Time: Dial 2) Name of element tripped/restored: At 14:59Hrs 160MVA T/F-2 tripped on OSR, 86. No load was affected. At 15:20Hrs 160MVA T/F-2 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230630170720 2023/06/30 17:07:21 1) Name of the substation and Time: At Rohini-I(16:08 hrs) 2) Name of element tripped/restored: 20MVA-I 3) Relay Annunciation: differential trip, LV REF operated. 4) Details of physically damaged equipment: cable damage reported. 5) Immediate corrective/system normalization steps performed: 11KV bus section put ON. 6) Any other relevant information: none. Regards, Delhi SLDC 20230630150221 2023/06/30 15:02:22 1) Name of the substation and Time: At Kanjhawla(14:30hrs) 2) Name of element tripped/restored: 100MVA-I and II. 3) Relay Annunciation: O/C and E/F. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: TPDDL asked to C/O their load. 6) Any other relevant information: None. Regards, Delhi SLDC 20230630145609 2023/06/30 14:56:10 1) Name of the substation and Time: At Kanjhawla(14:13hrs) 2) Name of element tripped/restored: 100MVA(220/66KV)-I and II. 3) Relay Annunciation: O/C and E/F. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: TPDDL asked to C/O load. 6) Any other relevant information: None. Regards, Delhi SLDC 20230629200521 2023/06/29 20:05:22 1) Name of the substation and Time: At 220KV Narela, 18:45hrs 2) Name of element tripped/restored: 220KV Panipat-III ( No load affected) 3) Relay Annunciation: RYB-Phase, Zone-1 ,FL-16.33kM,Ia-3.528KA,Ib-158.9A,Ic-341.5A(CVT appeared at Narela end) 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV Panipat-III charged at 19:53Hrs, Regards, Delhi SLDC 20230629124729 2023/06/29 12:47:30 1) Name of the substation and Time: 220KV Narela, 12:44Hrs. 2) Name of element tripped/restored: 220KV Panipat-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230629115513 2023/06/29 11:55:13 1) Name of the substation and Time: 220KV Narela, 11:23Hrs. 2) Name of element tripped/restored: 220KV Panipat-I tripped 3) Relay Annunciation: R-Phase Trip, Zone-1 and 186 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230627221412 2023/06/27 22:14:13 1) Name of the substation and Time: CCGT Bawana 2) Name of element tripped/restored: At 20:30Hrs 400KV CCGT Bawana-Bhiwani ckt charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230627192624 2023/06/27 19:26:25 1) Name of the substation and Time: Mundka 2) Name of element tripped/restored: At 18:47Hrs 315MVA ICT-3 charged at No Load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230626180225 2023/06/26 18:02:25 1) Name of the substation and Time: At 17:45 HRS 220KV Park street 2) Name of element tripped/restored: 66KV I/C-I 3) Relay Annunciation: O/C,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 17:56 HRS 66KV I/C-I energized and system become normal 6) Any other relevant information: Approx 47MW Load effected Regards, Delhi SLDC 20230626121209 2023/06/26 12:12:10 1) Name of the substation and Time: CCGT Bawana 2) Name of element tripped/restored: At 11:30Hrs 400KV CCGT Bawana-Bhiwani ckt made off manually by grid staff of CCGT due to heavy sparking and flash in line isolator and 400KV CCGT Bawana-Bahadurgarh ckt was already under Breakdown. Load affected was approx 700MW. At 11:32Hrs Load normalised through CCGT Bawana-400KV Bawana interconnector. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230625150209 2023/06/25 15:02:10 1) Name of the substation and Time: 220kV RPH, 14:08 Hrs 2) Name of element tripped/restored: 100 MVA Tx-I with 33kv I/C-I due to birdage 3) Relay Annunciation: Differential protection with intertripping 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 14:50 hrs charged of 100 MVA Tx-I with 33kv I/C-I(No load affected ) 6) Any other relevant information: - Regards, Delhi SLDC 20230625112949 2023/06/25 11:29:50 1) Name of the substation and Time: At 11:25 HRS 220KV Mehrauli 2) Name of element tripped/restored: 220KV TUGB-I energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 11:25 HRS 220KV TUGB-MLI-CKT-I energized Regards, Delhi SLDC 20230625080900 2023/06/25 08:09:01 1) Name of the substation and Time: 220kV Narela @ 06:55 Hrs 2) Name of element tripped/restored: 220kV Panipat Ckt-1 tripped. 3) Relay Annunciation: A Ph. Zone-1, 86 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: Ckt Auto-reclosed at Panipat end. Regards, Delhi SLDC 20230625080646 2023/06/25 08:06:47 1) Name of the substation and Time: 220kV Narela @ 05:24 Hrs 2) Name of element tripped/restored: 220kV Rohtak Rod-II tripped at6 both ends. 3) Relay Annunciation: At Narela end: Zone-1, A Ph., 6.07kA, 4.856km, GRP-1, Startinge phase - A, C, N 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230625080155 2023/06/25 08:01:56 1) Name of the substation and Time: 220KV Mehrauli @ 03:03 Hrs 2) Name of element tripped/restored: 220kV TGK-1 tripped 3) Relay Annunciation: At Mehrauli : Dist., zone-1, B-Ph., Line Differential, 4.526km, IB= 8.356kA and IY = 1.745kA At TGK end: Zone-II, Line differential, 11.4km, B- Ph., 11.598kA 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Load came on 220kV TGK-2 6) Any other relevant information: na Regards, Delhi SLDC 20230625031011 2023/06/25 03:10:12 1) Name of the substation and Time: 220kV Patparganj @ 02:59Hrs 2) Name of element tripped/restored: 66kV Incomer -1 and BusCoupler restored which got tripped @ 02:26 Hrs with tripping of 66kV GH1 Ckt1 Feeder(BYPL) 3) Relay Annunciation: O/c, B-Ph. E/F 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: Approx Load was 26MW Regards, Delhi SLDC 20230624171705 2023/06/24 17:17:06 1) Name of the substation and Time: At 17:13 HRS 220KV Saritavihar 2) Name of element tripped/restored: 220KV BTPS-I energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 17:13 HRS 220KV BTPS-I energized Regards, Delhi SLDC 20230624142731 2023/06/24 14:27:32 1) Name of the substation and Time: 220kV SVR, 12:55Hrs 2) Name of element tripped/restored: 220kV BTPS-I and II, 160MVA-I, 100MVA-II and III,B/C and 66kV I/C-I,II and III (220kV BTPS-I and II CVT appeared from BTPS end) 3) Relay Annunciation: 220kV Bus-Bar Operated 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 13:25 hrs system is noramal excepted 220kV BTPS-I and 66kV Jasola Ckt-I 6) Any other relevant information: Approx. load affected 112 MW Regards, Delhi SLDC 20230624112905 2023/06/24 11:29:05 1) Name of the substation and Time: 220kV RPH, 10:46Hrs 2) Name of element tripped/restored: 33kV I/C-II 3) Relay Annunciation: O/C and E/F 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 10:56 Hrs 33kV I/C-II energized system normal 6) Any other relevant information: Approx. load affected 55Mw Regards, Delhi SLDC 20230621191737 2023/06/21 19:17:38 1) Name of the substation and Time: 220 KV Okhla at 19:08 hrs 2) Name of element tripped/restored: 100 MVA Tx-V with 33 KV I/c-V Charge 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 100 MVA Tx-V with 33 KV I/c-V Charge and normal position at 19:08 Hrs Regards, Delhi SLDC 20230621175239 2023/06/21 17:52:41 1) Name of the substation and Time: 220kV Okhla, 17:15Hrs 2) Name of element tripped/restored: 100 MVA-V with 33kV I/C-V 3) Relay Annunciation: Diffrerential relay RYB, LV REF,F8,F9,86 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: 33kV B/C closed for normalization at 17:17 Hrs 6) Any other relevant information: Approx. 44 MW load affected for two minuts Regards, Delhi SLDC 20230620094230 2023/06/20 09:42:31 1) Name of the substation and Time: Pragati` 2) Name of element tripped/restored: At 09:38Hrs 220KV Pragati-Sarita Vihar-Maharani Bagh ckt charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230620062334 2023/06/20 06:23:35 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 05:13Hrs 66KV I/C-2 and 66KV I/C-4 tripped with the tripping of 66KV Malviya Nagar. Load affected was approx. 75MW. At 05:40Hrs 66KV I/C-2 and 66KV I/C-4 charged and load normalised. 3) Relay Annunciation: Relay on 66KV I/C-2 are O/C R-phase E/F. Relay on 66KV I/C-4 are O/C R-phase. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230619225636 2023/06/19 22:56:36 1) Name of the substation and Time: Pragati 2) Name of element tripped/restored: At 22:17Hrs 220KV Pragati-Sarita Vihar- Maharani Bagh ckt made off on request of grid staff as R-phase was not showing power. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230619225008 2023/06/19 22:50:09 1) Name of the substation and Time: Lodhi Road 2) Name of element tripped/restored: At 21:30Hrs 20MVA T/F-2 tripped on O/C R-phase with flash and smoke. Load affected was 4.5MW. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230619224651 2023/06/19 22:46:52 1) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 22:09Hrs 100MVA 220/33KV T/F-3 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230619202242 2023/06/19 20:22:43 1) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 18:55Hrs 100MVA 220/33KV T/F-3 tripped on Differential RYB-phase LV REF. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230619014057 2023/06/19 01:40:58 1) Name of the substation and Time: 01:16 HRS 220KV BTPS 2) Name of element tripped/restored: 220kv TUGB-I tripped at BTPS End only.CVT Appears 3) Relay Annunciation: zone-I,R ph, Dist 3.456KM, 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 01:31 HRs energized 6) Any other relevant information: No loas effected Regards, Delhi SLDC 20230617195356 2023/06/17 19:53:57 1) Name of the substation and Time: 220KV PPK-III, 19:28Hrs. 2) Name of element tripped/restored: 160MVA-II along with 66KV I/C-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230617152109 2023/06/17 15:21:10 1) Name of the substation and Time: 220 PPK-3 ,At 15:05 hrs 2) Name of element tripped/restored: 160 MVA tx-II 3) Relay Annunciation: Gas pressure alaram 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 66 KV bus coupler close at 15:07 hrs 6) Any other relevant information: load effected aprox.86 MW only two min. Regards, Delhi SLDC 20230617132733 2023/06/17 13:27:34 1) Name of the substation and Time: 220 KV Gopalpur At 12:27 Hrs 2) Name of element tripped/restored: 220 KV Mandola ckt-I 3) Relay Annunciation: R-phase trip,,Distance Operate,Zone-1,Trip Ph-RN, Fault Located-12.34 KM,IR 4.96 KA , CVT appear from mandola grid 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Restored At 13:18 Hrs 6) Any other relevant information: NO load effected Regards, Delhi SLDC 20230616231059 2023/06/16 23:10:59 1) Name of the substation and Time: 220kV BTPS @ 22:09 Hrs 2) Name of element tripped/restored: 220kV Ballabhgarh - I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230616203935 2023/06/16 20:39:36 1) Name of the substation and Time: 220KV BTPS @17:49 Hrs 2) Name of element tripped/restored: 220kV Ballabhgarh -I tripped at both ends. 3) Relay Annunciation: Relay at BTPS end: Zone-1, Y and B Ph. , 0.97km, 19.9kA and 20.16kA in Y and B ph. respectively 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: tripped at both ends Regards, Delhi SLDC 20230614205601 2023/06/14 20:56:01 1) Name of the substation and Time: 220 KV ROHINI-1 @20.54 2) Name of element tripped/restored: 220 KV SMB RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230614205456 2023/06/14 20:54:56 1) Name of the substation and Time: 220KV ROHINI-1 @20.17 2) Name of element tripped/restored: 220KV SMB CKT-2 3) Relay Annunciation: BB OPTD 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: CKT UNDER NO LOAD POSTION 6) Any other relevant information: NA Regards, Delhi SLDC 20230614205108 2023/06/14 20:51:09 1) Name of the substation and Time: 220 kv rohini-1 @20.43 2) Name of element tripped/restored: 100 mva tr-4 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230614204253 2023/06/14 20:42:54 1) Name of the substation and Time: 220 KV ROHINI @20.33 2) Name of element tripped/restored: 100 MVA TR-3 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230614204215 2023/06/14 20:42:16 1) Name of the substation and Time: 220 KV ROHIMI-1 @ 20.29 2) Name of element tripped/restored: 220 KV BAWANA-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230614204109 2023/06/14 20:41:10 1) Name of the substation and Time: 220 kv Rohini-1 @20.17 2) Name of element tripped/restored: 220KV Bawana ckt-2 100 mva TR-3 and 4 and 66 kv I/C -4 3) Relay Annunciation: 220KV Bawana ckt-2 LBB,BB OPTD 100 MVA T-3 86 ,LV REF 100 MVA TR-4 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: LOAD TRANSFERED TO MUNDUKA Regards, Delhi SLDC 20230614151615 2023/06/14 15:16:16 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Data of 400kv Bawana and Maharani bagh and most of the 220 Kv substations are coming suspected. Due to this Delhi load is not shwoing correctly. Kindly rectify the same at the earliest. 2) NA 3) NA 4) NA 5) NA 6) NA Regards, Delhi SLDC 20230614141552 2023/06/14 14:15:53 1) Name of the substation and Time: Mundka 2) Name of element tripped/restored: At 14:12Hrs 315MVA ICT-4 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230614121744 2023/06/14 12:17:45 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 11:45Hrs 100MVA 220/33KV T/F-2 tripped on WTI with the tripping of 33KV Preet Vihar and 100MVA 220/33KV T/F-1 was under shutdown to top up SF6 gas. Load affected was 78MW. At 11:50Hrs 100MVA 220/33KV T/F-1 charged and load normalised. At 12:01Hrs 100MVA 220/33KV T/F-2 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230614110547 2023/06/14 11:05:47 1) Name of the substation and Time: Mundka 2) Name of element tripped/restored: At 10:32Hrs 315MVA ICT-4 tripped on Buccholz. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230613160610 2023/06/13 16:06:11 1) Name of the substation and Time: 220 kv ppk-2 2) Name of element tripped/restored: 220 kv Bus coupler tripped without any indication 3) Relay Annunciation: tripped without any indication 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230613155447 2023/06/13 15:54:48 1) Name of the substation and Time: 400KV Bamnauli, 15:33Hrs. 2) Name of element tripped/restored: 220KV Dial-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230613145353 2023/06/13 14:53:54 1) Name of the substation and Time: 400 kv bammnouli @ 13.35 2) Name of element tripped/restored: 220kv dial ckt-1 3) Relay Annunciation: 186 AB ,A PH TRIP,Z1,2.392KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: CKT UNDER NOLOAD STATE Regards, Delhi SLDC 20230613144758 2023/06/13 14:47:59 1) Name of the substation and Time: 220 KV KANJHAWALA @ 13.43 2) Name of element tripped/restored: 100 MVA TR-1 and 2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230613131051 2023/06/13 13:10:53 1) Name of the substation and Time: 220kv [email protected] 2) Name of element tripped/restored: 100 MVA TR-1 and 2 along with 66 kv I/C 1 and 2 3) Relay Annunciation: HV OC ,EF 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230612215016 2023/06/12 21:50:18 1) Name of the substation and Time: At Mundka(20:18hrs) 2) Name of element tripped/restored: 160MVA-II along with 66KV I/C-II and 66KV B/C(bay no. 605) tripped. 3) Relay Annunciation: differential protection on 160MVA-II and 86on 66KV B/C(bay 605). 4) Details of physically damaged equipment: Y phase isolator of 66KV I/C-II found damaged. 5) Immediate corrective/system normalization steps performed: 66KV B/C(bay 616) put ON after yard clearance. 6) Any other relevant information: 66KV B/C(bay no 605) was energized after yard clearance. Regards, Delhi SLDC 20230612140037 2023/06/12 14:00:39 1) Name of the substation and Time: 220kv tuglakabad @13.53 2) Name of element tripped/restored: 220kv btps ckt-2 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230612132242 2023/06/12 13:22:43 1) Name of the substation and Time: 220kv tuglakabad @13.00 2) Name of element tripped/restored: 220kv btps-ckt-2 tripped 3) Relay Annunciation: Z1,RPH,Fault location 1KM,fault current 22.36 ka 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: load transfer to tulakabad-btps ckt-1 6) Any other relevant information: na Regards, Delhi SLDC 20230612123952 2023/06/12 12:39:53 1) Name of the substation and Time: 400 kv munduka @12.15 2) Name of element tripped/restored: 315 MVA ICT-4 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230612105149 2023/06/12 10:51:50 1) Name of the substation and Time: 220 kv mehrouli @10.45 2) Name of element tripped/restored: 100 MVATR-1 and TR-3 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230612103821 2023/06/12 10:38:22 1) Name of the substation and Time: 220kv mehrouli @10.30 2) Name of element tripped/restored: 100 mva TR-1 and 100 MVA R-3 3) Relay Annunciation: 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: informed brpl for shifting load 6) Any other relevant information: NA Regards, Delhi SLDC 20230612095221 2023/06/12 09:52:22 1) Name of the substation and Time: 220kV Peeragarhi @ 08:01Hrs 2) Name of element tripped/restored: 100MVA Tx-I tripped 3) Relay Annunciation: 86, Differential 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: Tripped with failure of Supply of 220kV Mundka Ckt 1 and 2 from Mundka end. Regards, Delhi SLDC 20230612091214 2023/06/12 09:12:14 1) Name of the substation and Time: 220kV Mehrauli 2) Name of element tripped/restored: @08:35 Hrs, 66kV Incomer- II, IV tripped with 66kV CDot-II Feeder tripping. @08:40 Hrs I/C-II charged and load normal. @09:00Hrs I/C-IV charged. 3) Relay Annunciation: O/C, Y - Ph. E/F 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: Approx load affected 94MW Regards, Delhi SLDC 20230612061842 2023/06/12 06:18:43 1) Name of the substation and Time: 400kV Bawana 2) Name of element tripped/restored: 100mVA Tx restored @ 05:08Hrs which was tripped @01:30 Hrs 3) Relay Annunciation: 86 Master Only 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: PTW taken 6) Any other relevant information: na Regards, Delhi SLDC 20230611073923 2023/06/11 07:39:23 1) Name of the substation and Time: At 06:40 HRS 400KV Bamnauli 2) Name of element tripped/restored: 500MVA ICT-3 with 220KV I/C-3 3) Relay Annunciation: 400KV Side Auto reclose scheme,186 A and B Grp A and B 220KV side No relay 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: No Load effected 6) Any other relevant information: - Regards, Delhi SLDC 20230610195041 2023/06/10 19:50:42 1) Name of the substation and Time: 220 KV RPH at 17:09 Hrs 2) Name of element tripped/restored: 220 KV IP-RPH ckt-I charge at 19:03 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 KV IP-RPH ckt-I charge at 19:03 Hrs system normal position Regards, Delhi SLDC 20230610174454 2023/06/10 17:44:54 1) Name of the substation and Time: At RPH(17:20hrs) 2) Name of element tripped/restored: 33KV I/C-II 3) Relay Annunciation: O/C and E/F. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 33KV I/C normalized. 6) Any other relevant information: Tripped alongwith CVT disappearance of 220KV I/P ckt-I. Regards, Delhi SLDC 20230610174140 2023/06/10 17:41:41 1) Name of the substation and Time: At 220KV RPH(17:09hrs) 2) Name of element tripped/restored: 33KV I/C-II 3) Relay Annunciation: O/C and E/F. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: I/C tried to be normalized. 6) Any other relevant information: Tripped along with CVT disappearance of 220KV IP ckt-I. Regards, Delhi SLDC 20230610173828 2023/06/10 17:38:29 1) Name of the substation and Time: At IP (17:09hrs) 2) Name of element tripped/restored: 220KV RPH ckt-I. 3) Relay Annunciation: O/C, Y and B phase, 495m, Z-I. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at RPH end. 6) Any other relevant information: CVT of IP-I disappeared at RPH end. Regards, Delhi SLDC 20230610171737 2023/06/10 17:17:38 1) Name of the substation and Time: At Sarita Vihar(15:56hrs) 2) Name of element tripped/restored: 20MVA-I 3) Relay Annunciation: gen trip, B phase, O/C. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: BSES asked to C/O load. 6) Any other relevant information: 20MVA-II is already under B/D. Regards, Delhi SLDC 20230610171545 2023/06/10 17:15:46 1) Name of the substation and Time: At Sarita Vihar(14:56hrs) 2) Name of element tripped/restored: 20MVA-I 3) Relay Annunciation: gen trip, Bphase, O/C. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: BSES asked to C/O load. 6) Any other relevant information: 20MVA-II is already under B/D. Regards, Delhi SLDC 20230609133727 2023/06/09 13:37:28 1) Name of the substation and Time: 220kV SBZ, 11:59 Hrs 2) Name of element tripped/restored: 220kV GPL-I and II supply failed from GPL end 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 12:40 100 Tx put on with 220kV GPL Ckt I and II and system normalized at 13:20Hrs 6) Any other relevant information: Load affected 66MW approx. Regards, Delhi SLDC 20230609132337 2023/06/09 13:23:38 1) Name of the substation and Time: 220kV Gopalpur, 11:59 hrs 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: at 13:14 100 MVA Tx-III with it I/C-III closed and all system is normalized. Regards, Delhi SLDC 20230609132019 2023/06/09 13:20:20 1) Name of the substation and Time: 220kV Gopalpur, 11:59 hrs 2) Name of element tripped/restored: 220kV Mandola Ckt-II, 100 Tx-II and 33kV Model Town-I and II at GPL and (220kV CVT appeared at GPL end) 3) Relay Annunciation: at MND-II:- B-Ph trip, diff opt, At 100 MVA-III:- 96, 86,E/F 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: At 12:05 hrs 220kV B/couper closed for normalized the system and At 13:04 Hrs 220kV MND-II clsoed 6) Any other relevant information: Approx. load affected 59 MW for 6 Minuts Regards, Delhi SLDC 20230607151331 2023/06/07 15:13:32 1) Name of the substation and Time: 220kV Parkstreet @ 14:45 Hrs 2) Name of element tripped/restored: 100MVA Tx-II with 66kV Incomer-II Tripped. Approx Load was 37MW. 3) Relay Annunciation: Tx - Differential, B-Ph. , 86. On Incomer- 86 relay 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: 66kV B/C Put ON after Yard inspection. 6) Any other relevant information: Load Constraint due to Only one Tranformer Now of 220kV/66kV level at Parkstreet. Regards, Delhi SLDC 20230606193558 2023/06/06 19:35:59 1) Name of the substation and Time: 220KV Peeragarhi, 19:31Hrs. 2) Name of element tripped/restored: 220KV Mundka-I charged 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230605174624 2023/06/05 17:46:25 1) Name of the substation and Time: At 17:40HRS 220KV Shalimar Bagh 2) Name of element tripped/restored: 220KV BWN-SMB-II Energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV BWN-SMB-II Energized at 17:40HRS and Load taken Regards, Delhi SLDC 20230602153044 2023/06/02 15:30:45 1) Name of the substation and Time: At Shalimar bagh(13:55hrs) 2) Name of element tripped/restored: 100MVA-I(220/33kv) 3) Relay Annunciation: 86A, 86B, 80, LVREF, differential protection operated. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 33KV B/C put ON. 6) Any other relevant information: Permit issued on Transformer. Regards, Delhi SLDC 20230602124137 2023/06/02 12:41:38 1) Name of the substation and Time: 400KV Bamnauli(10:26hrs) 2) Name of element tripped/restored: 500MVA ICT-III (charged on NO load). 3) Relay Annunciation: 186A, 186B, 86A1 trip group A, 86B1 trip group B. 4) Details of physically damaged equipment: fire in control cables. 5) Immediate corrective/system normalization steps performed: No load affected. 6) Any other relevant information: ICT is charged on No load, and permit issued on 220KV I/C side. Regards, Delhi SLDC 20230602085505 2023/06/02 08:55:07 1) Name of the substation and Time: 400KV Bamnauli, 07:58Hrs. 2) Name of element tripped/restored: 500MVA ICT-III, 220KV Bus-Coupler-I, 220KV Bus-Section-I and 220KV Bus-A, 220KV Bus-Bar operated 3) Relay Annunciation: 186A, 186B, 86A1 Trip Group-A and 86B1 Trip Group-B on 500MVA ICT-III, R-Phase Trip Zone-1 and 2 Trip, Y-Phase Trip Zone-1 and 2 Trip, B-Phase Trip Zone-1 and 2 Trip, 1961OX on 220KV Bus-Bar and no indication on 220KV Bus-Coupler-I, 220KV Bus-Section-I and 220KV Bus-A 4) Details of physically damaged equipment: Fire reported in the cable trench by Operation Staff. 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: No load effected Regards, Delhi SLDC 20230601191446 2023/06/01 19:14:47 1) Name of the substation and Time: 220KV Najafgarh, 19:02Hrs. 2) Name of element tripped/restored: 100MVA-IV charged at no-load 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: 100MVA-IV along with 66KV I/C-IV was under shutdown from 04.04.2023 (12:25Hrs.) for the overhauling of Transformer. Regards, Delhi SLDC 20230601130118 2023/06/01 13:01:19 1) Name of the substation and Time: 400kV Bawana , 12:00 Hrs 2) Name of element tripped/restored: 220kV SMB Ckt-I 3) Relay Annunciation: Without indication and CVT available at Bawana end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 12:49 Hrs system is normal by using Tie CB (1252) at Bawana end as CB (Main 1752 ) problem 6) Any other relevant information: No load affected Regards, Delhi SLDC 20230601090700 2023/06/01 09:07:01 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: 220KV Patparganj-IP ckt-II charged at 08:08Hrs. 220KV Patparganj-Gazipur ckt charged at 08:57Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230601073516 2023/06/01 07:35:17 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 06:52Hrs 220KV Patparganj-Gazipur ckt tripped on Z-1 RYB-phase If=2.4KA at Gazipur end. 220KV Patparganj-IP ckt-II tripped (Relay at Patparganj end are C-phase Z-1 1.6km Ic=13.7KA and relay at IP end are Z-2 RYB-phase) Load affected was approx. 90MW of 220K IP, 220KV Rajghat and 220KV Patparganj grid (33KV Load). At 07:07Hrs Load normalised through 220KV Patparganj-Geeta Colony ckt. I and II. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230531160111 2023/05/31 16:01:12 1) Name of the substation and Time: At 15:32 HRS 220KV OKHLA 2) Name of element tripped/restored: 160MVA-I with 66KV I/C -I with 66KV RAIL POLE BATRA 3) Relay Annunciation: O/C Y and B phase on 160MVA-I with 66KV I/C -I 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: AT 15:50HRS 160MVA-I with 66KV I/C -I energized.System normalized except O/G 66KV RAIL POLE BATRA 6) Any other relevant information: Aprrox 55MW Loas effected Regards, Delhi SLDC 20230531104536 2023/05/31 10:45:38 1) Name of the substation and Time: At 220KV RPH, 09:15 Hrs 2) Name of element tripped/restored: 33kV I/C-I (Bay no.-8) and 33kV B/C (Bay No. 9) 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 10:35 hrs 33kv I/C-I charged 6) Any other relevant information: - Regards, Delhi SLDC 20230531103156 2023/05/31 10:31:57 1) Name of the substation and Time: 220kV RPH, 09:15 hrs 2) Name of element tripped/restored: 33kV I/C-I (Bay no.-8) and 33kV B/C (Bay No. 9) due to Monkey electrocuted 3) Relay Annunciation: At 33kV I/C-I on E/F and at 33kV B/C without indication 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: at 09:45Hrs 33kV B/c put on for normalization the system 6) Any other relevant information: Approx. 19 MW affected Regards, Delhi SLDC 20230530212628 2023/05/30 21:26:29 1) Name of the substation and Time: 400KV Mundka, 20:19Hrs. 2) Name of element tripped/restored: 400KV Jhajjar-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230530182854 2023/05/30 18:28:55 1) Name of the substation and Time: 400KV Mundka, 17:24Hrs. 2) Name of element tripped/restored: 400KV Jhajjar-I and II tripped 3) Relay Annunciation: 400KV Jhajjar-I tripped off due to R-Phase Trip, B-Phase Trip, SOTF, Fault Location - 41.68Km and Fault Current, R-Phase - 4.5KA and B-Phase - 8.6KA and 400KV Jhajjar-II tripped off due to Distance Protection Zone-1, R-Phase Trip, Fault Location - 47.31Km and Fault Current, R-Phase - 7.4KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230529065412 2023/05/29 06:54:13 1) Name of the substation and Time: 220 KV Narela At 06:45 Hrs 2) Name of element tripped/restored: 220 KV Panipat Ckt-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Restoration At 06:45 Hrs Regards, Delhi SLDC 20230529061344 2023/05/29 06:13:45 1) Name of the substation and Time: 220kV Narela , 05:50 Hrs 2) Name of element tripped/restored: 220kV Narela – 22kV Panipat Ckt-II 3) Relay Annunciation: Y and B -Ph trip, zone-1,186x1 ,186x2, (CVT available from Panipat ckt-2) 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: CVT available from Panipat ckt-2 Regards, Delhi SLDC 20230528081925 2023/05/28 08:19:27 1) Name of the substation and Time: PPK-3 2) Name of element tripped/restored: At 06:54Hrs 160MVA T/F-2 tripped on REF. Load affected was 35MW. At 06:56Hrs load normalised through 66KKV B/C. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230527232402 2023/05/27 23:24:03 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 22:03Hrs 220KV Panipat ckt-I tripped on Z-1 B-phase. CVT was coming. No load was affected. At 23:11Hrs ckt charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230527183218 2023/05/27 18:32:19 1) Name of the substation and Time: Kanjhawala 2) Name of element tripped/restored: At 18:10Hrs 220KV Mundka ckt tripped on low gas pressure. CVT coming at Kanjhawala end. Load affected was 56MW. At 18:13Hrs load normalised through 220KV B/C. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230527150133 2023/05/27 15:01:34 1) Name of the substation and Time: 400kv munduka @13.44 2) Name of element tripped/restored: 400kv bawana-ckt-1 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230527121519 2023/05/27 12:15:19 1) Name of the substation and Time: 22O KV NARAELA@ 12.00 2) Name of element tripped/restored: 220KV ROHATAK ROAD 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230527121115 2023/05/27 12:11:16 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) NRLDC SCADE PHONE NOT WORKING 2) NA 3) NA 4) NA 5) NA 6) NA Regards, Delhi SLDC 20230527111637 2023/05/27 11:16:38 1) Name of the substation and Time: 400 KV MUNDUKA @10.58 2) Name of element tripped/restored: 400 KV BAWANA 3) Relay Annunciation: IPS Aluminum tube of Bawana Ckt 1 CVT B phase has got disconnected and sparking is going on at 400kV Tikrikalan 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230527104431 2023/05/27 10:44:32 1) Name of the substation and Time: 220kV Dial, 10:39 2) Name of element tripped/restored: 220kV Bamnauli-Dial Ckt2 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: Charged after clearance from O and M Div Regards, Delhi SLDC 20230527103928 2023/05/27 10:39:29 1) Name of the substation and Time: 220kv tugkakabad @ 10.35 2) Name of element tripped/restored: 220kv RKPURAM CKT-2 3) Relay Annunciation: Tipped on over voltage 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230527103044 2023/05/27 10:30:45 1) Name of the substation and Time: 220kv tuglakabad@ 9.38 2) Name of element tripped/restored: 220kv masjidmoth ckt-1 3) Relay Annunciation: tipped on over voltage 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230527074751 2023/05/27 07:47:52 1) Name of the substation and Time: 220KV TUGHLAKABAD @ 06:21 2) Name of element tripped/restored: 220KV MasjidMoth 1 and 220kV RK Puram -II Tripped due to Overvoltage. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: load came on other circuits. Regards, Delhi SLDC 20230527073447 2023/05/27 07:34:48 1) Name of the substation and Time: CCGT BAWANA @ 06:18hRS 2) Name of element tripped/restored: 400 KV Bawana CCGTB-Bhiwani Overvoltage alarm and Tripped. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230527073112 2023/05/27 07:31:13 1) Name of the substation and Time: 220kV Bamnauli @ 06:01Hrs 2) Name of element tripped/restored: 220kV DIAL-II tripped 3) Relay Annunciation: Zone-1, R- Ph. 2.623km, 17.7 km, 186A and B 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: Line already in disconnected condition at DIAL end and was at No Load. Regards, Delhi SLDC 20230527071832 2023/05/27 07:18:33 1) Name of the substation and Time: 220kV Narela @ 06:13 2) Name of element tripped/restored: 220kV Rohtak Road-1 tripped 3) Relay Annunciation: Zone-1, R-Ph. , 22.83kM, 186, 86 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230527071049 2023/05/27 07:10:49 1) Name of the substation and Time: 220kV BTPS @ 06:30Hrs 2) Name of element tripped/restored: CB of 220kV Ballabhgarh ckt 2 trippe. line remained charged from other end. 3) Relay Annunciation: Zone-1, R -Ph., 4.52kM, 27.17kA 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230526170048 2023/05/26 17:00:49 1) Name of the substation and Time: AT BAMNOLI(16:37HRS) 2) Name of element tripped/restored: 220KV NAJAFGARH CKT-II 3) Relay Annunciation: 186T, B PHASE DIFFERENTIAL PROTECTION. 4) Details of physically damaged equipment: NONE. 5) Immediate corrective/system normalization steps performed: LOAD TAKEN ON MUNDKA CKT. 6) Any other relevant information: NONE. Regards, Delhi SLDC 20230526142838 2023/05/26 14:28:39 1) Name of the substation and Time: AtBamnoli(13:46hrs) 2) Name of element tripped/restored: 220KV DIAL ckt-II 3) Relay Annunciation: phase A zone-I , 2.7KM 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: This ckt is in B/D further ahead on cable section. 6) Any other relevant information: none. Regards, Delhi SLDC 20230526090225 2023/05/26 09:02:26 1) Name of the substation and Time: At 08:29 HRS 220kv ROHINI-I 2) Name of element tripped/restored: 100MVA-I with 66KV I/C no-I and 66KV I/C No-II 3) Relay Annunciation: 100MVA-I LV O/C E/F and 96 66KV I/C -I INTERTRIPPING 66KV I/C -II WITHOUT INDICATION 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 08:42 HRS 66KV BUSCOUPLER PUT ON 6) Any other relevant information: LOAD AFFECTED APPROX 46MW Regards, Delhi SLDC 20230526051424 2023/05/26 05:14:25 1) Name of the substation and Time: 220kV Narela,04:03 2) Name of element tripped/restored: 220kV Narela – 220kV Panipat Ckt-I 3) Relay Annunciation: B-Ph, Zone-1, 186 and CVT appeared 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: at 5:07 Hrs Charged 6) Any other relevant information: No load affected Regards, Delhi SLDC 20230525210137 2023/05/25 21:01:38 1) Name of the substation and Time: 400kV Bamnauli, 20:16 2) Name of element tripped/restored: 1. 220 kV PPK-II, Ckt-II, 20:16 2. 220 kV NJF -II, 20:21 3. 220 kV Dail-II,20:18 tripped due to heavy rain and strom 3) Relay Annunciation: At BNL:- R-Ph trip diff trip 86T 86T 86A and B, 186 A and B At PPK-II:- Autoreclose operate main-II, prot trip, PD, Air pressure low , R-Ph trip , PSB(Red/ ARCL green) At BNL:- 186T , B-PH trip zone-1, 86 A and B At NJF:-Main-II, B-Ph Differential trip, 86A and B At BNL:- Ph-A, Zone-1 trip, 86A and B, FL-2.7kM, FC Ia-16.39kA 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20230524215521 2023/05/24 21:55:22 1) Name of the substation and Time: 220kv gopal pur @21.49 2) Name of element tripped/restored: 220kv mandola ckt-1 and 2 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230524215420 2023/05/24 21:54:21 1) Name of the substation and Time: 220kv naraela @ 21.40 2) Name of element tripped/restored: 220kv mandola ckt-1 and 2 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230524194051 2023/05/24 19:40:51 1) Name of the substation and Time: 220KV GOPAL PUR @ 17.44 2) Name of element tripped/restored: 220KV GPL-mandola ckt-1 and 22 3) Relay Annunciation: Power supply failed NO TRipping at gopla pur end 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Load normalised from 220 KV SOW 6) Any other relevant information: LOAD (156 MW) EFFECTED FOR 2 MINTUTS Regards, Delhi SLDC 20230524193556 2023/05/24 19:35:57 1) Name of the substation and Time: 220kv Naraela 17.44 2) Name of element tripped/restored: 220kv Naraela-MANDOLA CKT-1 and 2 3) Relay Annunciation: POWER SUPLLY FAILED NO tripping at DTL END 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: LOAD RESTORED FROM DSIDC BAWANA Regards, Delhi SLDC 20230522172620 2023/05/22 17:26:20 1) Name of the substation and Time: DSIDC 2) Name of element tripped/restored: At 17:21Hrs 220KV Bawana ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230522153512 2023/05/22 15:35:12 1) Name of the substation and Time: DSIDC Bawana 2) Name of element tripped/restored: At 14:35Hrs 220KV Bawana-DSIDC ckt-II tripped from Bawana end on Z-1 1.8km RYB-phase Ia=4.4KA Ib=13.1KA Ic=12.8KA. Load affected was 95MW. At 14:44Hrs Load normalised through 220KV Narela ckt-II. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230522145651 2023/05/22 14:56:52 1) Name of the substation and Time: Vasant Kunj 2) Name of element tripped/restored: 100MVA T/F-1 charged at 14:50Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230522142410 2023/05/22 14:24:10 1) Name of the substation and Time: Bamnauli 2) Name of element tripped/restored: 220KV PPK-3 ckt-I tripped on C-phase differential at 12:33Hrs. No load was affected 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230522135928 2023/05/22 13:59:28 1) Name of the substation and Time: Vasant Kunj 2) Name of element tripped/restored: 100MVA T/F-1 tripped on differential WTI at 13:32Hrs. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230522135920 2023/05/22 13:59:20 1) Name of the substation and Time: Vasant Kunj 2) Name of element tripped/restored: 100MVA T/F-1 tripped on differential WTI at 13:32Hrs. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230521172854 2023/05/21 17:28:55 1) Name of the substation and Time: 400KV Bamnauli, 16:51Hrs. 2) Name of element tripped/restored: 400KV Jhatikara restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230521161100 2023/05/21 16:11:01 1) Name of the substation and Time: 220kV Mehrauli @ 16:08 2) Name of element tripped/restored: 220kV MHL-TKD-II restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230521154642 2023/05/21 15:46:43 1) Name of the substation and Time: 220kV Narela @ 15:37 Hrs 2) Name of element tripped/restored: 220kV Mandola- Narela Line breaker cloased at Mandola end . Load taken. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230521144700 2023/05/21 14:47:01 1) Name of the substation and Time: 220kV Mehrauli @ 14:14 Hrs 2) Name of element tripped/restored: 220kV Mehrauli - Tughlakabad Ckt II tripped. 3) Relay Annunciation: At MHL end: Zone-1, R- Ph. , 3.126km. At TKD end: R- Ph. Line differential, 13.5km, 18.864kA 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: Load of 220kV Vasantkunj S/Stn shifted on 220kV RK Puram to avoid overloading. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230521125332 2023/05/21 12:53:33 1) Name of the substation and Time: 400kV Bamnauli @ 12:37 Hrs 2) Name of element tripped/restored: 400KV Bamnauli- Jhatikra Ckt tripped. 3) Relay Annunciation: Dist. Zone-1, 1.249kM, Ia-14.77kA, Ic-1.84kA, In - 16.12kA, 186A and B 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: Tripped at Both ends. Regards, Delhi SLDC 20230521124345 2023/05/21 12:43:46 1) Name of the substation and Time: 220kV Mandola- Narela Ckt 1 tripped at Mandola end only @ 12:14 Hrs. 2) Name of element tripped/restored: na 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: Ckt 1 Not tripped at Narela End.Load came on Ckt 2. No Load affected. Regards, Delhi SLDC 20230520150955 2023/05/20 15:09:56 1) Name of the substation and Time: 400 kv bammnouli @15.01 hrs 2) Name of element tripped/restored: 400 kv Jhatikara 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NRLDC CODE 4519 Regards, Delhi SLDC 20230520150853 2023/05/20 15:08:54 1) Name of the substation and Time: 400 kv Bammnouli @14.44 2) Name of element tripped/restored: 400 kv jhatikara 3) Relay Annunciation: z1,186 A and B,R-ph ,If=1.19 ka fault location 1.9km 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230520080939 2023/05/20 08:09:40 1) Name of the substation and Time: At Tughlakabad:(05:13hrs) 2) Name of element tripped/restored: 160MVA-II 3) Relay Annunciation: RYB phase, diffrential protection. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: no load was affected. 6) Any other relevant information: 66KV I/C -II tripped on intertripping. Regards, Delhi SLDC 20230519151152 2023/05/19 15:11:53 1) Name of the substation and Time: 220kv narela @ 14.40 2) Name of element tripped/restored: 220kv DSIDC BAWANA CKT-1 3) Relay Annunciation: R PH Z1 ,11.7 KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: CKT UNDER NO LOAD STATTE . NO LOAD EFFECTED Regards, Delhi SLDC 20230518071545 2023/05/18 07:15:46 1) Name of the substation and Time: 220 KV Dev Nager at 07:07Hrs 2) Name of element tripped/restored: 100 MVA tx-III and IV 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 07:07 Hrs both Tx charge Regards, Delhi SLDC 20230518060022 2023/05/18 06:00:23 1) Name of the substation and Time: At 400 KV Bawana at 05:02 Hrs 2) Name of element tripped/restored: 400 KV Deepalpur 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Charge at 05:02 Hrs Regards, Delhi SLDC 20230518043316 2023/05/18 04:33:16 1) Name of the substation and Time: At 03:56 HRS 220KV Devnagar 2) Name of element tripped/restored: 100MVA-3 3) Relay Annunciation: Over flux 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load shifted by Discom 6) Any other relevant information: Aopprox load effected 35MW Regards, Delhi SLDC 20230518041601 2023/05/18 04:16:02 1) Name of the substation and Time: 400kV Bawana, 3:34hrs 2) Name of element tripped/restored: 400kV Deepalpur 3) Relay Annunciation: RX1 RX2 Group 86A 86B 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20230518034812 2023/05/18 03:48:14 1) Name of the substation and Time: 220kV Den Ngr, 3:13 Hrs 2) Name of element tripped/restored: 100 MVA Tx-IV 3) Relay Annunciation: HV/LV OF protection 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 33kV B/C closed for 33kV Rama rd at 3:36 Hrs 6) Any other relevant information: Appr. 6 MW load effected Regards, Delhi SLDC 20230517224816 2023/05/17 22:48:18 1) Name of the substation and Time: 220kV Narela, at 15.02(RR-I) and 14:51(RR-II) 2) Name of element tripped/restored: 220kV Rohtal Road ckt-I and II 3) Relay Annunciation: Zone-I, C-Ph trip (C-Ph jumper snaped) at RR-I and Y-Ph trip , dis-14.8kM at RR-II 4) Details of physically damaged equipment: (C-Ph jumper snaped) at RR-I 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Resored at 19.17(RR-I) and 18:49(RR-II) Regards, Delhi SLDC 20230517163650 2023/05/17 16:36:51 1) Name of the substation and Time: At 16:13 Hrs. 220KV Geeta Colony 2) Name of element tripped/restored: 220KV SOW Ckt-2 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: after clearance of patrolling team ckt energised 6) Any other relevant information: Ckt-1 is still in breakdown Regards, Delhi SLDC 20230517151846 2023/05/17 15:18:46 1) Name of the substation and Time: At Sarita Vihar(14:18hrs) 2) Name of element tripped/restored: 220KV Pragati ckt. 3) Relay Annunciation: Bphase, Z-1, 3.678KM, 6.99KA fault. 4) Details of physically damaged equipment: None. 5) Immediate corrective/system normalization steps performed: Patrolling done for same. 6) Any other relevant information: none. Regards, Delhi SLDC 20230517151556 2023/05/17 15:15:57 1) Name of the substation and Time: At Sarita Vihar(15:52hrs) 2) Name of element tripped/restored: 220KV Pragati ckt. 3) Relay Annunciation: B phase, Z-1, D/P, 9.998KA fault current. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: No load was affected. Patrolling started for same. 6) Any other relevant information: none. Regards, Delhi SLDC 20230517140127 2023/05/17 14:01:28 1) Name of the substation and Time: At 12:05 Hrs. 220KV Geeta Colony 2) Name of element tripped/restored: 220 KV SOW Ckt-1 tripped and Ckt-2 tripped at 12:22 Hrs From 220kV SOW 3) Relay Annunciation: R-Y-B Phase, Trip phase BN, Autoreclose, Zone-1 4) Details of physically damaged equipment: Jumpper damaged and conductor of ckt-1 hanging.Conductor of ckt-2 also found damaged due to fire 5) Immediate corrective/system normalization steps performed: 220 KV Ghazipur ckt made on at 220 kv Patparganj and 220 KV B/C made on at 220 kv Pragati 6) Any other relevant information: fire in jhuggies(Huts) reported by DISCOMs.Approx. 400MW load affected for approx. 10 minutes as ckt-2 of Geeta Coloney also tripped from SOW at 12:22 Hrs Regards, Delhi SLDC Regards, Delhi SLDC 20230516083003 2023/05/16 08:30:05 1) Name of the substation and Time: 220kV BTPS @ 01:50 Hrs 2) Name of element tripped/restored: 220kV Ballabhgarh 1 and 2 tripped at both ends 3) Relay Annunciation: At BTPS end Ckt 1 relay: Zone-II, Y and B phase Ckt 2 Relay - Zone-1 and 2, RYB Ph. 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: Fault reported at Ballabhgarh end. Regards, Delhi SLDC 20230515131102 2023/05/15 13:11:02 1) Name of the substation and Time: 220kV PPG, 12:34 2) Name of element tripped/restored: 220kV G. Colony Ckt-II 3) Relay Annunciation: distance, zone-I, BoPh trip, Differential, 86, but CVT appeared from G Colny ckt-II 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 12:48 hrs Normalized by put on G. Clny Ckt-II , No load effected Regards, Delhi SLDC 20230514224246 2023/05/14 22:42:47 1) Name of the substation and Time: At Kanjhawla(21:01hrs) 2) Name of element tripped/restored: 220KV Bawana ckt-I and II. 3) Relay Annunciation: R and B phase , zone-I, 9.9KM. 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: 220KV Mundka ckt taken on Load. 6) Any other relevant information: none. Regards, Delhi SLDC 20230514165329 2023/05/14 16:53:31 1) Name of the substation and Time: Kanjhawala 2) Name of element tripped/restored: At 16:07Hrs 220KV Kanjhawala-Bawana ckt-I tripped. Relay at kanjhawala end are RB-phase Z-1. Relay at Bawana end are RB-phase Z-1 9.9km Ir=4.6KA Ib=4.9KA. 220KV Kanjhawala-Bawana ckt-II tripped from Bawana end on RB-phase Z-1. Load affected was 180MW. At 16:16Hrs load normalised through 220KV Mundka ckt. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230513230516 2023/05/13 23:05:17 1) Name of the substation and Time: 220KV R. K. Puram, 21:00Hrs. 2) Name of element tripped/restored: 100MVA-I (220/33KV) charged at no-load, which was tripped off at 18:52Hrs. on 12.05.2023 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230513200923 2023/05/13 20:09:24 1) Name of the substation and Time: 220KV R. K. Puram, 20:04Hrs. 2) Name of element tripped/restored: 33KV Bus-Coupler restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230513195206 2023/05/13 19:52:07 1) Name of the substation and Time: 220KV R. K. Puram, 17:59Hrs. 2) Name of element tripped/restored: 33KV Adhchini and 33KV Bus-Coupler 3) Relay Annunciation: General Trip, Y-Phase, E/F and 86 on 33KV Adhchini and E/F and 86 on 33KV Bus-Coupler 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230513151850 2023/05/13 15:18:51 1) Name of the substation and Time: 220kV M. Moth @15:12 2) Name of element tripped/restored: 33kV Incomer-III restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230513142118 2023/05/13 14:21:19 1) Name of the substation and Time: 220kV Masjid Moth @ 12:55 Hrs 2) Name of element tripped/restored: 100MVA Tx _III restored except its 33kV incomer. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230513132219 2023/05/13 13:22:20 1) Name of the substation and Time: 220kV M. Moth @ 12:15 Hrs 2) Name of element tripped/restored: 100MVA Tx-III while charging its 33kV Incomer 3) Relay Annunciation: Only 86 Mater 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Tx was at No Load 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230512201201 2023/05/12 20:12:02 1) Name of the substation and Time: 220kV RKP, at 18:52hrs 2) Name of element tripped/restored: 100MVA-I with 33kV I/C-I 3) Relay Annunciation: At 18:52 Hrs Differatial protection, WTI high trip, 86 I and II. At 19:32 Hrs Differatial protection, WTI high trip, 86 II. and E/F tried and tripped again, with getting clearance from AM(T) RKP 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 19:32 Hrs Differatial protection, WTI high trip, 86 II. and E/F tripped again during charging with getting clearance from AM(T) RKP and No load effected Regards, Delhi SLDC 20230512192900 2023/05/12 19:29:01 1) Name of the substation and Time: 220kV Den Ngr 2) Name of element tripped/restored: New element added at 220kV Den Ngr sub-station:- 1) 33kV Rama Road Ckt, Bay-306 charged at 18:59 Hrs. systematically 2) 33kV Shajada Bad Ckt, Bay-308 charged at 19:10 Hrs systematically 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20230512162310 2023/05/12 16:23:11 1) Name of the substation and Time: 220KV SOW, 16:08Hrs. 2) Name of element tripped/restored: 220KV Gopalpur-I and II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230512162024 2023/05/12 16:20:25 1) Name of the substation and Time: 220KV Gopalpur, 15:49Hrs. 2) Name of element tripped/restored: 220KV Mandaula-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230512154515 2023/05/12 15:45:16 1) Name of the substation and Time: 220kV IP, 15:10Hrs 2) Name of element tripped/restored: 33kV Incomer of 100MVA Transformer No.2 and 3, Tripped 3) Relay Annunciation: OC, Stage One R-PH on 33kV Incomer of both transformers 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: 33kV Incomer No2 charged at 15:22 33kV Incomer 3 charged at 15:37 6) Any other relevant information: Load shifted by Discoms Regards, Delhi SLDC 20230512150154 2023/05/12 15:01:55 1) Name of the substation and Time: 220kV Wazirabad, 14:31Hrs 2) Name of element tripped/restored: 220kV Wazirabad- Gopalpur Ckt 1 and 2 3) Relay Annunciation: Gopalpur- Wazbd-Ckt1- R-PH, Distance trip, Z-1 and 2, A/R LO, Fault location 3.849 KM, FC-13.51KA Gopalpur- Wazbd-Ckt2- B-Ph, Diffrentil, Z1, 86, A/R LO, Fault location 2.07KM, FC-13.72KA 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Load Taken through bus coupler at Gopalpur 6) Any other relevant information: 108MW for 4 MIN Regards, Delhi SLDC 20230512145338 2023/05/12 14:53:40 1) Name of the substation and Time: 220kV Wazirabad, 14:28Hrs 2) Name of element tripped/restored: 220kV Wazirabad-Mandaula Ckt.1 3) Relay Annunciation: R-PH, Diffrential 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: No load affected Regards, Delhi SLDC 20230512133201 2023/05/12 13:32:02 1) Name of the substation and Time: 220kV Gopalpur, 12:59 2) Name of element tripped/restored: 220KV Gopalpur Mandola ckt 2 3) Relay Annunciation: 86, B-PH Trip Diffrential OPRTD, Fault 44.43KM, Fault Current 1.219KA 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Load taken through Bus coupler charged at 13:04 6) Any other relevant information: load affected 108 MW for 5 Min load shifted by Discom, Regards, Delhi SLDC 20230512114016 2023/05/12 11:40:17 1) Name of the substation and Time: 220kV Narela, 11:30HRs 2) Name of element tripped/restored: 100MVA Tr No.1 Charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20230512112102 2023/05/12 11:21:03 1) Name of the substation and Time: 220kV Narela, 11:10Hrs 2) Name of element tripped/restored: 100MVA Tr NO.1 along with 66kV Incomer 1 3) Relay Annunciation: No indication 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to S/stn staff to check the transformer 6) Any other relevant information: NIL Regards, Delhi SLDC 20230511233241 2023/05/11 23:32:42 1) Name of the substation and Time: At Gopalpur(22:31hrs) 2) Name of element tripped/restored: 220KV Mandola-I 3) Relay Annunciation: Tripped on SNTC fail, differential fail, auto trip. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV Wazirabad-I put ON. 6) Any other relevant information: CVT was available at Gopalpur end. Regards, Delhi SLDC 20230511222220 2023/05/11 22:22:21 1) Name of the substation and Time: At Gopalpur(21:32hrs) 2) Name of element tripped/restored: 220KV Mandola-I 3) Relay Annunciation: SNTC fail, differentila fail, auto trip. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV Wazirabad-I put ON at Gopalpur and load restored. 6) Any other relevant information: CVT of 220KV Mandola-I available at Gopalpur end. Regards, Delhi SLDC 20230510212230 2023/05/10 21:22:31 1) Name of the substation and Time: Rohini-2 2) Name of element tripped/restored: At 19:40Hrs 66KV I/C-I tripped on 86. No load was affected. At 21:09Hrs 66KV I/C-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230507154139 2023/05/07 15:41:40 1) Name of the substation and Time: At15:35 HRS 220KV SOW 2) Name of element tripped/restored: 20 MVA Tx-III with 11 KV I/C-III Energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 20 MVA Tx-III Trip w3ith 11 KV I/C-III 3) Relay Annunciation: Tx-E/F, LV-REF,Ib-7.081 KA, and 11 KV I/C-III Energized system is normal Regards, Delhi SLDC 20230507105206 2023/05/07 10:52:07 1) Name of the substation and Time: 220 KV S.O.W. at 09:44 Hrs 2) Name of element tripped/restored: 20 MVA Tx-III Trip w3ith 11 KV I/C-III 3) Relay Annunciation: Tx-E/F, LV-REF,Ib-7.081 KA, and 11 KV I/C-Inter tripping 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 09:56 Hrs 11 KV Bus section ON 6) Any other relevant information: Approx.load effect 06.0 MW Regards, Delhi SLDC 20230506165948 2023/05/06 16:59:50 1) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: 220KV Sarita Vihar-Maharani Bagh ckt charged at 16:57Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230506154215 2023/05/06 15:42:16 1) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: At 15:25Hrs 220KV Sarita VIhar- Maharani Bagh ckt tripped. No load was affected. 3) Relay Annunciation: Relay at Sarita Vihar end are R-phase Z-1 3.2km If=5.3KA. Relat at Maharani Bagh end are R-phase Z-1 7.5km If=13.5KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230503171831 2023/05/03 17:18:32 1) Name of the substation and Time: 220KV SGTN, 17:11Hrs. 2) Name of element tripped/restored: 160MVA-I along with 66KV I/C-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230503160318 2023/05/03 16:03:19 1) Name of the substation and Time: 220kV SGTN, 15:38Hrs 2) Name of element tripped/restored: 160MVA Transformer No.1 along with incomer 3) Relay Annunciation: at 160MVA 86A, 86B and CRB, at incomer 86A and 86B. 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Load normalize through Buscoupler at 15:41Hrs 6) Any other relevant information: Nil Regards, Delhi SLDC 20230503140831 2023/05/03 14:08:32 1) Name of the substation and Time: 220kV Vasant Kunj at 13:40Hrs 2) Name of element tripped/restored: 66kV Incomer of 160MVA Tr No3 tripped. 3) Relay Annunciation: Any Trip, O/c B-Ph, O/c SC1, E/F, 86 Oprtd. 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Instructed to switch on 66kV Bus Coupler, Load normalize at 13:55Hrs 6) Any other relevant information: Information of tripping given at 13:50Hrs, Communication from down at 220kV Vasant kunj, Load affected 21MW Regards, Delhi SLDC 20230502035341 2023/05/02 03:53:43 1) Name of the substation and Time: 220kV Vasant Kunj,03:15 Hrs 2) Name of element tripped/restored: 220kV RKP-I (due to O/V) 3) Relay Annunciation: Main 2 diff and O/V and CVT appeared from RKP end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 3:37 Normalized 6) Any other relevant information: Appr. load effected 12MW Regards, Delhi SLDC 20230501204611 2023/05/01 20:46:17 1) Name of the substation and Time: 220 KV Okhla 2) Name of element tripped/restored: 100 MVA p.Tr-II With 66 KV I/C-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Tx Charge and normal potison at 20:40 Hrs Regards, Delhi SLDC 20230501175226 2023/05/01 17:52:27 1) Name of the substation and Time: 220kV OKHLA, 17:30hrs 2) Name of element tripped/restored: 100 MVA Tx.-II with 66kV I/C-II 3) Relay Annunciation: at 100 MVA-II on SPR trip, LVCB opereate, HV/LV operated, 86 and inter-trip 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Effected feeder as 66kV Okhla Ph-II, Ckt-I and II, 20 MVA Tx.-II. Approx. Load effected 22 MW. Regards, Delhi SLDC 20230428171405 2023/04/28 17:14:06 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: 220KV Panipat ckt-III charged at 13:45Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230428161518 2023/04/28 16:15:19 1) Name of the substation and Time: Okhla 2) Name of element tripped/restored: 100MVA 220/33KV T/F-3 charged at 14:06Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230428121204 2023/04/28 12:12:05 1) Name of the substation and Time: 220kV Narela @ 11:14 Hrs 2) Name of element tripped/restored: 220kV Panipat - Narela Ckt-III tripped 3) Relay Annunciation: A-Phase Zone-1, Ckt tripped at Both end. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: reported to NR. 6) Any other relevant information: na Regards, Delhi SLDC 20230428075900 2023/04/28 07:59:01 1) Name of the substation and Time: 220kv okhla @07.45hrs 2) Name of element tripped/restored: 33 kv I/C -4 33KV I/C -5 3) Relay Annunciation: RESTORED 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: 33 KV NEHRUPLACE CKT-1 and 2 AND EAST OF KAILASH FEEDER ARE UNDER BREAKDOWN Regards, Delhi SLDC 20230428071755 2023/04/28 07:17:56 1) Name of the substation and Time: Corigendum: 220KV Okhla, 05:55Hrs. 2) Name of element tripped/restored: 100MVA-III, 33KV I/C-III, 33KV I/C-IV, 33KV I/C-V, 33KV Nehru Place-I and 33KV Nehru Place-II Tripped 3) Relay Annunciation: : OLTC, OSR, LBIB OPRED, HBLB OPRED and CLGR on 100MVA-III, Any Trip, O/C B-Phase, O/C Stage 1 and 86 on 33KV I/C-III, Any Trip, O/C ST1 and O/C B-Phase on 33KV I/C-IV, No Indication on 33KV I/C-V, O/C ST1, O/C B-Phase, E/F ST1, E/F ST2 and 86 on 33KV Nehru Place-I and B-Phase and Zone-1 on 33KV Nehru Place-II 4) Details of physically damaged equipment: 33kV Nehru place -1 B-Ph CB Damaged, 33kV Nehru place-2 B-Phase Isolator Damaged 5) Immediate corrective/system normalization steps performed: Informed to S/stn Staff to isolate the damaged part and ckeck the switchyard, Immidiately informed Discom to shift the load 6) Any other relevant information: 57 MW shifted by Discom during 05.57Hrs to 6.35Hrs Regards, Delhi SLDC 20230428070251 2023/04/28 07:02:52 1) Name of the substation and Time: 220KV Okhla, 05:55Hrs. 2) Name of element tripped/restored: : 100MVA-III, 33KV I/C-III, 33KV I/C-IV, 33KV I/C-V, 33KV Nehru Place-I and 33KV Nehru Place-II 3) Relay Annunciation: OLTC, OSR, LBIB OPRED, HBLB OPRED and CLGR on 100MVA-III, Any Trip, O/C B-Phase, O/C Stage 1 and 86 on 33KV I/C-III, Any Trip, O/C ST1 and O/C B-Phase on 33KV I/C-IV, No Indication on 33KV I/C-V, O/C ST1, O/C B-Phase, E/F ST1, E/F ST2 and 86 on 33KV Nehru Place-I and B-Phase and Zone-1 on 33KV Nehru Place-II 4) Details of physically damaged equipment: ) OLTC, OSR, LBIB OPRED, HBLB OPRED and CLGR on 100MVA-III, Any Trip, O/C B-Phase, O/C Stage 1 and 86 on 33KV I/C-III, Any Trip, O/C ST1 and O/C B-Phase on 33KV I/C-IV, No Indication on 33KV I/C-V, O/C ST1, O/C B-Phase, E/F ST1, E/F ST2 and 86 on 33KV Nehru Place-I and B-Phase and Zone-1 on 33KV Nehru Place-II 5) Immediate corrective/system normalization steps performed: Load shifted by discom, Informed to S/stn Staff to check and give clearance 6) Any other relevant information: 57 MW Load affected for 05.57Hrs to 6.35Hrs Regards, Delhi SLDC 20230427033731 2023/04/27 03:37:32 1) Name of the substation and Time: 220kV KNJ, 2:45 2) Name of element tripped/restored: 20MVA Tx-I with 11kV I/C-1 +local Tr. 3) Relay Annunciation: 86 on 20 MVA Tx. with inter triping 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 3:23 Hrs system is normalized excepted local Tr. 6) Any other relevant information: Load effected approx. 5 MW Regards, Delhi SLDC 20230423005947 2023/04/23 00:59:49 1) Name of the substation and Time: 220KV Narela, 00:14Hrs. 2) Name of element tripped/restored: 220KV Panipat-III tripped 3) Relay Annunciation: Without any indication 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230421141205 2023/04/21 14:12:06 1) Name of the substation and Time: 220 KV I.P.at 12:02 hrs 2) Name of element tripped/restored: 220 KV IP-Pragati ckt-I 3) Relay Annunciation: With out Indication CVT appear from Pragati end 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Fdr try at 13:35 Hrs system normal No load effected Regards, Delhi SLDC 20230420213506 2023/04/20 21:35:07 1) Name of the substation and Time: At Bawana(19:17hrs) 2) Name of element tripped/restored: 220KV Kanjhawla ckt-I and II. 3) Relay Annunciation: none. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: none. 6) Any other relevant information: Erection of monopoles by NHAI. 11 nos monopoles erected by NHAI, reconditioning with hardware fittings etc done by NHAI. Regards, Delhi SLDC 20230418165150 2023/04/18 16:51:52 1) Name of the substation and Time: 220KV Masjid Moth, 16:50Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-I restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230418152930 2023/04/18 15:29:32 1) Name of the substation and Time: 220KV Masjid Moth, 14:14Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-I 3) Relay Annunciation: GRA Trip and Differential RYB Phase 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230417163304 2023/04/17 16:33:06 1) Name of the substation and Time: 400 kv BML @16.30 2) Name of element tripped/restored: 220KV NJF CKT-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230417133629 2023/04/17 13:36:30 1) Name of the substation and Time: 220KV KAJHAWALA @13.00 2) Name of element tripped/restored: 220KV NJF SUUPLY FAIED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: LOAD TAKEN ON MUNDUKA B/C MADE ON 6) Any other relevant information: LOAD EFFTECTED 75 MW INFORMED NDPL TO SHIFT THE LOAD Regards, Delhi SLDC 20230417132439 2023/04/17 13:24:40 1) Name of the substation and Time: 400kv Bammnouli and 13.01 HRS 2) Name of element tripped/restored: 220KV NJF CKT-2 3) Relay Annunciation: Z1,B PH,186 AB,86T 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: LOAD SHARED BY 220KV NJF CKT-1 .NO LOAD EFFTED AT NJF END 6) Any other relevant information: NA Regards, Delhi SLDC 20230416201815 2023/04/16 20:18:16 1) Name of the substation and Time: 220kV Mehrauli @ 20:14 Hrs 2) Name of element tripped/restored: 220kV TGK-II restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230416184134 2023/04/16 18:41:35 1) Name of the substation and Time: 220kV Mehrauli @ 18:18 Hrs 2) Name of element tripped/restored: 220kV TGK-II tripped. Relay : RYB Ph., Zone-1, Differential, 6.437km, Relay at TGK end: Zone-II, B - phase, 9.10km, Fault current - 14kA 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Load came on other ckt 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230416154402 2023/04/16 15:44:04 1) Name of the substation and Time: At Najafgarh(14:23) 2) Name of element tripped/restored: 220KV Bamnoli-II 3) Relay Annunciation: R and Y phase , differential trip, 81.7m from Bamnoli. 4) Details of physically damaged equipment: R phase jumper damaged at Najafgarh end. 5) Immediate corrective/system normalization steps performed: none. 6) Any other relevant information: none. Regards, Delhi SLDC 20230416002416 2023/04/16 00:24:17 1) Name of the substation and Time: At 22:38 Hrs 220kv KNJ 2) Name of element tripped/restored: 220KV CB of Mundka-KNJ ckt tripped at Kanjhawala end. 3) Relay Annunciation: Relay operated at zone-1 trip, c-ph trip , E/F 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 22:55 hrs:-KNJ-NJF put ON at same time BNL -NJF ckt-1 tripped. At 22:57Hrs:-NJF-BNL ckt-I put ON. At 23:06Hrs:- NJF-KNJ ckt put ON. At 23:25Hrs:- System is normalized at KNJ Grid. 6) Any other relevant information: approx. load 130 MW effected excep 220kV Bus-Bar-I Regards, Delhi SLDC 20230415181420 2023/04/15 18:14:21 1) Name of the substation and Time: At 17:44 220KV PPK-I 2) Name of element tripped/restored: 220KV Dwarka-II enwergized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV Dwarka-II enwergized Regards, Delhi SLDC 20230415180103 2023/04/15 18:01:03 1) Name of the substation and Time: 220 kV MLI, 16:45 Hrs 2) Name of element tripped/restored: 66kV I/C-II and IV tripped with 66kV O/G feeder IOC 3) Relay Annunciation: Relay operated on 66kV I/C-II and IV as O/C stage-1 R and Y-Ph, on 66kV O/G feeder IOC on O/C -R and Y-Phase and CB top clamps burnt and CT RYB-Ph Spark 4) Details of physically damaged equipment: CB top clamps burnt and CT RYB-Ph Spark of 66kV O/G feeder IOC 5) Immediate corrective/system normalization steps performed: System is normalized by energized of 66kV I/C-II and IV and B/C at 17:15 hrs (IOC U/D B/D) 6) Any other relevant information: Approx load 27 MW effected Regards, Delhi SLDC 20230415171418 2023/04/15 17:14:19 1) Name of the substation and Time: At Mehrauli(16:45hrs) 2) Name of element tripped/restored: 66KV I/C-II and 66KV I/C-IV. 3) Relay Annunciation: 66KI/C-II tripped on O/C, R and Y phase. 66KV I/C-IV tripped on O/C, R and Y phase. 4) Details of physically damaged equipment: CT flash reported. 5) Immediate corrective/system normalization steps performed: BSES asked to C/O load. 6) Any other relevant information: None. Regards, Delhi SLDC 20230415141941 2023/04/15 14:19:42 1) Name of the substation and Time: At Pappankalan-I(12:12hrs) 2) Name of element tripped/restored: 220KV Dwarka ckt-II and 160MVA-V transformer. 3) Relay Annunciation: Differential protection, Cphase fault, 1.7KM from Dwarka. 160MVA Transformer tripped W/I. 4) Details of physically damaged equipment: LA burst at Pappankalan-I end. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Pappankalan-I grid, and later load taken on 220KV Bamnoli-II. 6) Any other relevant information: None. Regards, Delhi SLDC 20230415141216 2023/04/15 14:12:17 1) Name of the substation and Time: At Najafgarh:(11:16hrs) 2) Name of element tripped/restored: 220KV Bamnauli ckt-I and II. 3) Relay Annunciation: RYB phase,11.08KA, 1.3KM on 220KV Najafgarh-Bamnoli-I. D/P , R and Y phase, Zone-I, 81.7m, on 220KV Bamnoli-Najafgarh-II. 4) Details of physically damaged equipment: R phase jumper of Bamnoli-II found damaged at Najafgarh. 5) Immediate corrective/system normalization steps performed: 220KV Mundka ckt put ON at Najafgarh, and 220KV B/C put ON at Kanjhawla substation. 6) Any other relevant information: 220KV Bawana-Kanjhawla ckts are already under S/D. Regards, Delhi SLDC 20230414124558 2023/04/14 12:45:59 1) Name of the substation and Time: 220 KV Tuglakabad at 12:30 Hrs 2) Name of element tripped/restored: 160 MVA tr-1 Charge 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 160 MVA tr-1 Charge at 12:30 Hrs Regards, Delhi SLDC 20230413195345 2023/04/13 19:53:46 1) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: At 19:22Hrs 160MVA T/F-1 tripped on general trip RYB-phase differential. Grid staff had reported electrocution of monkey. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230413161406 2023/04/13 16:14:08 1) Name of the substation and Time: At 16:10 HRS 220KV TUGB 2) Name of element tripped/restored: 220KV TUGB-MLI-II enetgized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV TUGB-MLI-II enetgized Regards, Delhi SLDC 20230413130502 2023/04/13 13:05:03 1) Name of the substation and Time: At 12:29 HRS 220KV TUGB 2) Name of element tripped/restored: 220KV TUGB-MLI- CKT -II 3) Relay Annunciation: TUGB END Gen Trip,Zone-II,R-Phase trip,3 phase Differential trip, Distance 11.70KM IA-12.006KA MEhrauli END -B ph Trip,Zone-I Fault Located 4.7KM Ia-18.00KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: No load Affected. 6) Any other relevant information: - Regards, Delhi SLDC 20230411145619 2023/04/11 14:56:20 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 14:22Hrs 220KV Mandaula ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230411125521 2023/04/11 12:55:22 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 12:33Hrs 220KV Mandaula ckt-II tripped on B-phase Differential. CVT coming at Narela end. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230410133707 2023/04/10 13:37:08 1) Name of the substation and Time: 400KV Mundka, 13:01Hrs. 2) Name of element tripped/restored: 220KV kanjhawala tripped 3) Relay Annunciation: 86, U/V and LO 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: 220KV Bus-Coupler charged at 220KV Kanjhawala 6) Any other relevant information: No tripping and Supply failed at Kanjhawala end, total load effected at Kanjhawala end is 34MW and load restored at 13:06Hrs. Regards, Delhi SLDC 20230410131445 2023/04/10 13:14:46 1) Name of the substation and Time: 220KV Gazipur, 13:12Hrs. 2) Name of element tripped/restored: 220KV Maharani Bagh-II restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230410130941 2023/04/10 13:09:44 1) Name of the substation and Time: 220KV Gazipur, 12:53Hrs. 2) Name of element tripped/restored: 220KV Maharani Bagh-II tripped 3) Relay Annunciation: 86 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: CB tripped and CVT is available Regards, Delhi SLDC 20230409173917 2023/04/09 17:39:18 1) Name of the substation and Time: 400 kV Bawana 17.37 hrs 2) Name of element tripped/restored: 220kV Shalimer bagh ckt-1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230409143024 2023/04/09 14:30:25 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) All MTNL Landlines Phones exists at Delhi SLDC Control Room are not working. 2) Nil 3) Nil 4) Nil 5) Nil 6) Nil Regards, Delhi SLDC 20230409120406 2023/04/09 12:04:07 1) Name of the substation and Time: 400KV Bawana, 11:23Hrs. 2) Name of element tripped/restored: 220KV Shalimaar Bagh-I tripped 3) Relay Annunciation: Distance Trip, Zone-I, Y-Phase, Fault Current, Y-Phase - 18.43KA and Fault Location - 58.64m 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Total load effected - 174MW and load restored at 11:30Hrs. Regards, Delhi SLDC 20230409114812 2023/04/09 11:48:12 1) Name of the substation and Time: 220KV Shalimaar Bagh, 11:23Hrs. 2) Name of element tripped/restored: 220KV DMRC-I tripped 3) Relay Annunciation: Distance Protection Trip, SOTF Trip and LBB 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Total load effected - 10MW Regards, Delhi SLDC 20230409114410 2023/04/09 11:44:11 1) Name of the substation and Time: 400KV Bawana, 11:23Hrs. 2) Name of element tripped/restored: 220KV Shalimaar Bagh-I tripped 3) Relay Annunciation: Distance Trip, Zone-I, Y-Phase, Fault Current, Y-Phase - 18.43KA and Fault Location - 58.64Km 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Total load effected - 174MW. Load restored at 11:30Hrs. Regards, Delhi SLDC 20230409023441 2023/04/09 02:34:42 1) Name of the substation and Time: 220kv Parkstreet @ 02:11 Hrs 2) Name of element tripped/restored: 220/66kV 100MVA-II tripped. 3) Relay Annunciation: HV REF Trip, Differential 86A and B 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: 66kV B/C Put ON 6) Any other relevant information: Load on Transformer at the time of tripping was approx 11MW. Regards, Delhi SLDC 20230408101935 2023/04/08 10:19:36 1) Name of the substation and Time: At 220KV Subzi Mandi(09:55hrs) 2) Name of element tripped/restored: 16MVA-I and II. 3) Relay Annunciation: Differential Protection, C phase. 4) Details of physically damaged equipment: None. 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load. 6) Any other relevant information: 33KV Shehzadabagh-II tripped along. Regards, Delhi SLDC 20230408101439 2023/04/08 10:14:40 1) Name of the substation and Time: At 220KV Subzi Mandi(09:37hrs) 2) Name of element tripped/restored: 16MVA-I and II. 3) Relay Annunciation: Differential Protection , C-phase. 4) Details of physically damaged equipment: None. 5) Immediate corrective/system normalization steps performed: Informed Discoms to C/O load. 6) Any other relevant information: 33KV Shehzadabagh-II tripped along. Regards, Delhi SLDC 20230408080310 2023/04/08 08:03:11 1) Name of the substation and Time: At 07:36 HRS 220KV Trauma centre 2) Name of element tripped/restored: 100MVA-II with 33KV I/C-II 3) Relay Annunciation: Differential Y and B phase,86 ,(Inter tripping 33KV Incomer-II) 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load effected Regards, Delhi SLDC 20230406154248 2023/04/06 15:42:49 1) Name of the substation and Time: 220kV KNJ, at 14:55 hrs 2) Name of element tripped/restored: 220kV MDK ckt 3) Relay Annunciation: R- Ph, Zone-1,fault current -300A at KNJ end and Zone-1,86B, 86R1,Y1,B1, Fault current Ia-9.1KA, dist.-9.9KM at MDK end (Tripped both side) 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: at 15:04 Hrs 220kV B/C- put on for system energization 6) Any other relevant information: apprx. 56MW load effected Regards, Delhi SLDC 20230405191456 2023/04/05 19:14:57 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: At 19:04Hrs 100MVA 220/66KV T/F-2 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230405160323 2023/04/05 16:03:25 1) Name of the substation and Time: 220kV Park Street, 15:30 Hrs 2) Name of element tripped/restored: 220/66kv, 100 MVA Tx.-II with 66kV I/C-II 3) Relay Annunciation: 30E- SPR, 86A,B,C and intertripping 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 15:35 hrs- 66kV B/C put on and system is normalized 6) Any other relevant information: Approx. 25MW load effected for 05 minuts only Regards, Delhi SLDC 20230404211042 2023/04/04 21:10:43 1) Name of the substation and Time: At 220KV Kanjhawla(18:13hrs) 2) Name of element tripped/restored: 220KV Najafgarh 3) Relay Annunciation: B phase zone-1, 6.8KM at Najafgarh end and tripped W/O at Kanjhawla end. 4) Details of physically damaged equipment: None. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Kanjhawla . 6) Any other relevant information: none. Regards, Delhi SLDC 20230404140752 2023/04/04 14:07:53 1) Name of the substation and Time: 220kv Kanjhawala @ 13:48 Hrs 2) Name of element tripped/restored: 220kV KNJ-NJF CKT 3) Relay Annunciation: @ NAJFGARH END : ZONE-1, RYB PHASE MAIN, B PHASE CHECK, DIST - 6.8KM MAIN, 7.1 KM CHECK. NO RELAY AT KNJ END. 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: 220KV BUS COUPLER PUT ON AT KNJ. 6) Any other relevant information: AT 220KV KNJ SUBSTATION , APPROVED SHUTDOWN ON 220KV BAWANA 1 and 2 ALREADY PRESENT SO ONLY SOURCE AVAILABLE NOW IS 220KV MUNDKA CKT. 220KV NJF CKT NEED TO BE RESTORED ASAP. Regards, Delhi SLDC 20230403114514 2023/04/03 11:45:15 1) Name of the substation and Time: BTPS 2) Name of element tripped/restored: At 06:00Hrs 220KV Balabgarh ckt-II tripped on Z-1 B-phase 8.96km If=1KA. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230402195536 2023/04/02 19:55:37 1) Name of the substation and Time: 220 KV Maharani bagh At 18:34 Hrs 2) Name of element tripped/restored: 220 KV Gazipur ckt -1 charge at 19:49 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220 KV Gazipur ckt -1 charge at 19:49 Hrs,normal position Regards, Delhi SLDC 20230402191329 2023/04/02 19:13:30 1) Name of the substation and Time: 220kV MAHARANI BAGH, 18:34 Hrs. 2) Name of element tripped/restored: 220kv Gzp Ckt-I( Both end tripped) 3) Relay Annunciation: At MBG:- Gen. trip, Zone-I, Y and B- Ph, 86, distance-6kM, Fault current, IL1-0.14kA, IL2-9.24kA, IL3-9.3kA. At Gzp:-R,Y and B-Ph, Zone-1, Dist. 2.3kM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220 MBG-I tripped only 6) Any other relevant information: No load effected Regards, Delhi SLDC 20230401231809 2023/04/01 23:18:10 1) Name of the substation and Time: 220kv Rohini-I @ 22:57 Hrs 2) Name of element tripped/restored: 220kV SMB- Rohini -I charged which was on no load and tripped @ 21:59 Hrs 3) Relay Annunciation: 86ABC 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: N.A. 6) Any other relevant information: Ckt was at no load. Regards, Delhi SLDC 20230401131458 2023/04/01 13:15:00 1) Name of the substation and Time: 220KV Park Street, 13:00Hrs. 2) Name of element tripped/restored: 220KV Dev Nagar 3) Relay Annunciation: Over Voltage, 186 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230401122949 2023/04/01 12:29:53 1) Name of the substation and Time: 400 kvHarsh vihar @11.48 2) Name of element tripped/restored: 220kv 50 mvr reactor 3) Relay Annunciation: 86 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230401122945 2023/04/01 12:29:48 1) Name of the substation and Time: 400 kvHarsh vihar @11.48 2) Name of element tripped/restored: 220kv 50 mvr reactor 3) Relay Annunciation: 86 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230331230713 2023/03/31 23:07:13 1) Name of the substation and Time: Harsh Vihar 2) Name of element tripped/restored: New Energisation 50MVAR Reactor-2 charged at 21:24Hrs. 50MVAR Reactor-1 charged at 23:00Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230331204151 2023/03/31 20:41:52 1) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: 220KV RK Puram Ckt-I charged at 20:35Hrs , circuit was under breakdown since 28/12/2022. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230331090430 2023/03/31 09:04:31 1) Name of the substation and Time: 220kV gopalpur, 08:48 Hrs 2) Name of element tripped/restored: 66kV I/C-IV (GIS) from 160 MVA Tx 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 66kV I/C-IV (GIS) from 160 MVA Tx Regards, Delhi SLDC 20230331075325 2023/03/31 07:53:26 1) Name of the substation and Time: 400kV Tuglkabad, 18:38 Hrs and 19:02 Hrs 2) Name of element tripped/restored: Note:-New elemtent has been added and charged as 220kV Masjid Moth Ckt-1 and 2 at 18:38 and 19:02 hrs on 30.03.2023 respectively at 400kV Tuglkabas Grid 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: New elemtent has been added and charged as 220kV Masjid Moth Ckt-1 and 2 at 18:38 and 19:02 hrs on 30.03.2023 respectively at 400kV Tuglkabas Grid Regards, Delhi SLDC 20230330225033 2023/03/30 22:50:34 1) Name of the substation and Time: 400kV Tuglkabad, 22:18Hrs. 2) Name of element tripped/restored: 220kV Masjid Moth Ckt-II 3) Relay Annunciation: General trip R-Phase, Distance relay trip, Differential trip, line diff. bais 1,bais 2 and neutal trip,Fault location-6.70 KM, Ir-29.387KA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: This one is new element has been charged today at 19:02 Hrs on no load from TKD end only Regards, Delhi SLDC 20230330165435 2023/03/30 16:54:36 1) Name of the substation and Time: At Masjid Moth(15:25hrs) 2) Name of element tripped/restored: 33KVI/C-II 3) Relay Annunciation: tripped without indication. 4) Details of physically damaged equipment: B phase 33KV jumper of Shivalik found damaged. 5) Immediate corrective/system normalization steps performed: BSES asked to C/O their load. 6) Any other relevant information: NONE. Regards, Delhi SLDC 20230330155507 2023/03/30 15:55:08 1) Name of the substation and Time: At Masjid Moth(15:25hrs) 2) Name of element tripped/restored: 33KV I/C-I and 33KV I/C-III. 3) Relay Annunciation: 86 on 33Kv I/C-I and Dir. O/C on 33KV I/C-III. 4) Details of physically damaged equipment: 33KV B phase Jumper of Shivalik found damaged. 5) Immediate corrective/system normalization steps performed: BSES asked to C/O their load. 6) Any other relevant information: None. Regards, Delhi SLDC 20230330155209 2023/03/30 15:52:09 1) Name of the substation and Time: At Masjid Moth(14:40hrs) 2) Name of element tripped/restored: 33KV I/C -I, II and III. 3) Relay Annunciation: Master 86 on 33KV I/C-I, Without indication tripping on 33KV I/C-II, and Dir O/C on 33KV I/C-III. 4) Details of physically damaged equipment: 33KV B phase jumper of Shivalik found damaged. 5) Immediate corrective/system normalization steps performed: BSES asked to C/O their load. 6) Any other relevant information: None. Regards, Delhi SLDC 20230329212833 2023/03/29 21:28:34 1) Name of the substation and Time: 220kv HCML @20.55 2) Name of element tripped/restored: 220KV DEV NAGAR FIRST TIME CHARGING 3) Relay Annunciation: DIFF TRIP 86 OPTD 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: FIRST TIME CHARGED . CB NOT HOLD Regards, Delhi SLDC 20230329160130 2023/03/29 16:01:31 1) Name of the substation and Time: 220kV RHN-1, at 10:17 hrs 2) Name of element tripped/restored: 220kV RHN-1- SMB Ckt-1 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Charged at 15:17 Hrs 6) Any other relevant information: - Regards, Delhi SLDC 20230329113834 2023/03/29 11:38:35 1) Name of the substation and Time: 220kV RHN-I, 10:17 Hrs. 2) Name of element tripped/restored: 220kV SMB-I 3) Relay Annunciation: Zone-1, A and B- Phase on MAIN 1 relay and Y-Ph, Distance trip,86 , 295TB 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Ohter end already off 6) Any other relevant information: - Regards, Delhi SLDC 20230328170230 2023/03/28 17:02:30 1) Name of the substation and Time: 220 KV Okhla 14:46 Hrs 2) Name of element tripped/restored: 220kV Okhla-TKD Ckt-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 16:57 Hrs Charged Regards, Delhi SLDC 20230328152901 2023/03/28 15:29:01 1) Name of the substation and Time: 220kV Okhla, at 14:46 Hrs 2) Name of element tripped/restored: 220kV Okhla-TKD Ckt-I (Both end) 3) Relay Annunciation: Zone-1, R and B-Phase, distance- 2.9KM, 86, 86T, at Okhla end and and Zone-1, Ib-18.89KA, TKD end 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: No load effected Regards, Delhi SLDC 20230328142123 2023/03/28 14:21:24 1) Name of the substation and Time: 220kV Okhla, 13:02 2) Name of element tripped/restored: 220kV TKD Ckt-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 14:17 hrs charged Regards, Delhi SLDC 20230328133126 2023/03/28 13:31:28 1) Name of the substation and Time: 220kV Okhla, 13:02Hrs 2) Name of element tripped/restored: 220kV TKD ckt-I (Both end tripped ) 3) Relay Annunciation: Zone-1, R and B-Phase, distance- 2.59KM, 86, 86T, at Okhla end and Zone-1, B and C-Phase TKD end 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: No load effected Regards, Delhi SLDC 20230327200017 2023/03/27 20:00:18 1) Name of the substation and Time: At Gopalpur(18:05hrs) 2) Name of element tripped/restored: 220KV Subzi mandi ckt-II 3) Relay Annunciation: RYB phase trip. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV bus section put ON at Subzi mandi , load normalized. 6) Any other relevant information: none. Regards, Delhi SLDC 20230324150247 2023/03/24 15:02:48 1) Name of the substation and Time: 400 kv bamnouli @ 14.56 2) Name of element tripped/restored: 315MVA ICT-4 RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230324140231 2023/03/24 14:02:32 1) Name of the substation and Time: 400KV Bamnauli, 13:27Hrs. 2) Name of element tripped/restored: 315MVA-IV along with 220KV I/C-IV with Local Transformer 3) Relay Annunciation: Differential Trip, RYB Phase, 86A, 86B, 186A and 186B on 315MVA-IV and Inter Tripping on 220KV I/C-IV 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230324122959 2023/03/24 12:29:59 1) Name of the substation and Time: 400KV Bawana, 17:08Hrs.(23.03.2023) 2) Name of element tripped/restored: 315MVA ICT-IV restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230323165305 2023/03/23 16:53:06 1) Name of the substation and Time: At Sarita Vihar (16:04hrs) 2) Name of element tripped/restored: 220KV Maharani Bagh circuit. 3) Relay Annunciation: D/P, E/F, R phase, Zone-!. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Sarita Vihar station. 6) Any other relevant information: No load was affected. Regards, Delhi SLDC 20230323154546 2023/03/23 15:45:47 1) Name of the substation and Time: At Sarita Vihar(14:38hrs) 2) Name of element tripped/restored: 220KV Maharani Bagh ckt 3) Relay Annunciation: Distance protection, zone-I, R phase, E/F. 4) Details of physically damaged equipment: awaited. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Sarita Vihar substation. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20230323143001 2023/03/23 14:30:01 1) Name of the substation and Time: At Bawana(12:17hrs) 2) Name of element tripped/restored: 315MVA ICT-IV 3) Relay Annunciation: Bucholz relay. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: Transformer running in parallel with other transformers. 6) Any other relevant information: No load was affected. Regards, Delhi SLDC 20230322061956 2023/03/22 06:19:57 1) Name of the substation and Time: 220kv gazipur and 4.52 2) Name of element tripped/restored: 160 mva tr-1 3) Relay Annunciation: ovr flux optd 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230321142241 2023/03/21 14:22:42 1) Name of the substation and Time: 220kV M/ Moth, 13:52 Hrs 2) Name of element tripped/restored: 100 MVA Tx.III with 33kV I/c-III 3) Relay Annunciation: HV side-Diff. relay RYB and LV side- LV REF, 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 33kV Bus-coupler put on at 14:15 hrs for system normalization 6) Any other relevant information: Approx. load effect 16 MW Regards, Delhi SLDC 20230321105241 2023/03/21 10:52:42 1) Name of the substation and Time: At 10:44 HRS 220KV SGTN 2) Name of element tripped/restored: 160MVA-I energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 160MVA-I energized system is normal Regards, Delhi SLDC 20230321005820 2023/03/21 00:58:20 1) Name of the substation and Time: Sabzi Mandi 2) Name of element tripped/restored: At 00:42Hrs 100MVA T/F-2 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230321001940 2023/03/21 00:19:41 1) Name of the substation and Time: SGTN 2) Name of element tripped/restored: 160MVA T/F-1 tripped on PRV at 23:54Hrs. Load affected was 25MW. At 00:12Hrs 66KV B/C closed and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230320200812 2023/03/20 20:08:14 1) Name of the substation and Time: Sabzi Mandi 2) Name of element tripped/restored: 100MVA T/F-2 tripped on E/F at 19:37Hrs. Load affected was 50MW. Discoms have been asked to shift their load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230320200450 2023/03/20 20:04:51 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: At 19:09Hrs 220KV Mandaula ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230320200011 2023/03/20 20:00:12 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: At 19:09Hrs 220KV Mandaula ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230320181623 2023/03/20 18:16:24 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: At 18:02Hrs 220KV Mandaula ckt-I tripped on A-phase Z-1 0.8km If=16.65KA. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230319053649 2023/03/19 05:36:50 1) Name of the substation and Time: 220KV Park Street, 05:23Hrs. 2) Name of element tripped/restored: 220KV Dev Nagar restored 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230319053248 2023/03/19 05:32:49 1) Name of the substation and Time: 220KV Park Street, 04:02Hrs. 2) Name of element tripped/restored: 220KV Dev Nagar tripped 3) Relay Annunciation: Without any indication 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Confirm from both ends, no tripping at 220KV Dev Nagar end 6) Any other relevant information: After confirmation from 220KV Dev Nagar, circuit charged at 05:23Hrs. Regards, Delhi SLDC 20230316205646 2023/03/16 20:56:47 1) Name of the substation and Time: At Mundka(19:58hrs) 2) Name of element tripped/restored: 400KV Bus reactor 1 and 2. 3) Relay Annunciation: first time charging. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: none. 6) Any other relevant information: 400KV Bay no. 401A and 402A energized. Regards, Delhi SLDC 20230315172130 2023/03/15 17:21:32 1) Name of the substation and Time: At Kanjhawla(13:06hrs) 2) Name of element tripped/restored: 100MVA-I and II . 3) Relay Annunciation: 100MVA-I tripped on 86 and 100MVA-II tripped on E/F ,86. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 66KV B/C put on at Kanjhawla. 6) Any other relevant information: none. Regards, Delhi SLDC 20230315171817 2023/03/15 17:18:18 1) Name of the substation and Time: At Bawana(14:59hrs) 2) Name of element tripped/restored: 220KV Kanjhawla ckt-II 3) Relay Annunciation: B phase, differential trip, zone-1. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put on at Kanjhawla. 6) Any other relevant information: none. Regards, Delhi SLDC 20230315150618 2023/03/15 15:06:19 1) Name of the substation and Time: At Bawana(13:27hrs) 2) Name of element tripped/restored: 220KV Kanjhawla ckt-II. 3) Relay Annunciation: B phase differential trip, zone-I, 3.482KA fault. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Kanjhawla and load normalized. 6) Any other relevant information: none. Regards, Delhi SLDC 20230315130121 2023/03/15 13:01:22 1) Name of the substation and Time: AT kANJHAWLA(12:18HRS) 2) Name of element tripped/restored: 100 MVA-I AND II(220/66 KV) TRANSFORMER 3) Relay Annunciation: 86 ON 100MVA-I AND E/F 86 ON 100MVA-II. 4) Details of physically damaged equipment: NONE 5) Immediate corrective/system normalization steps performed: 66KV B/C PUT ON , LOAD NORMALISED. 6) Any other relevant information: NONE. Regards, Delhi SLDC 20230311173707 2023/03/11 17:37:07 1) Name of the substation and Time: BTPS 2) Name of element tripped/restored: At 17:29Hrs 220KV Ballabgarh ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230311160505 2023/03/11 16:05:06 1) Name of the substation and Time: BTPS 2) Name of element tripped/restored: At 13:38Hrs 220KV Ballabgarh ckt-II tripped at BTPS end on Z-1 R-phase. CVT Coming at BTPS end. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230310181705 2023/03/10 18:17:06 1) Name of the substation and Time: 220KV Pappankalan-II, 18:00Hrs. 2) Name of element tripped/restored: 100MVA-I restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20230310133826 2023/03/10 13:38:27 1) Name of the substation and Time: PPK-2 2) Name of element tripped/restored: At 12:50Hrs 100MVA T/F-1 tripped on Differential C-phase LV REF. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230308151631 2023/03/08 15:16:32 1) Name of the substation and Time: 220kv PPK-1 @ 15.00 HRS 2) Name of element tripped/restored: 220KV BML- CKT-2 TRIPPED 3) Relay Annunciation: Z1 OPTD 7.1KM ,m2 optd dif trip ,86 optd 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: cvt avaialble Regards, Delhi SLDC 20230305190346 2023/03/05 19:03:47 1) Name of the substation and Time: SCADA DATA COMMUNICATION 2) Name of element tripped/restored: NA 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) 220kb lodhi road ,Power Transformer and Tr lines data suspect/not matching real time data 2) 220KV peeragarhi Power Transformer and Tr lines data suspect/not matching real time data 3) 220KV tRAUMA CENTREPower Transformer and Tr lines data suspect/not matching real time data 4) 220KV IP-PPG CKT-2 Tr lines data suspect/not matching real time data 5) ALL 220KV CB STATUS @ mBAGH END data suspect/not matching real time data 6) 220KV PPG-gEETACOLONY- CKT-2 CB STATUS suspect/not matching real time data Regards, Delhi SLDC Regards, Delhi SLDC 20230305185946 2023/03/05 18:59:47 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) 220kb lodhi road ,Power Transformer and Tr lines data suspect/not matching real time data 2) 220KV peeragarhi Power Transformer and Tr lines data suspect/not matching real time data 3) 220KV tRAUMA CENTREPower Transformer and Tr lines data suspect/not matching real time data 4) 220KV IP-PPG CKT-2 Tr lines data suspect/not matching real time data 5) ALL 220KV CB STATUS @ mBAGH END data suspect/not matching real time data 6) 220KV PPG-gEETACOLONY- CKT-2 CB STATUS suspect/not matching real time data Regards, Delhi SLDC 20230305093559 2023/03/05 09:35:59 1) Name of the substation and Time: At 09:30HRS 220KV Sarita vihar 2) Name of element tripped/restored: 220KV SVR-Pragati ckt energized at 09:30 HRS 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV SVR-Pragati ckt energized at 09:30 HRS Regards, Delhi SLDC 20230304231714 2023/03/04 23:17:15 1) Name of the substation and Time: 220kV Sarita Vihar @ 22:59 Hrs 2) Name of element tripped/restored: 220kV Sarita Vihar-Pragati Tripped. 3) Relay Annunciation: @ Sarita Vihar : Distance 6.67km , Zone-1 , B Phase. @ Pragati End : Distance Trip, Zone-I, 5.485km, 186, Fault Current - 11.96kA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230303140834 2023/03/03 14:08:34 1) Name of the substation and Time: 220kV Maharani Bagh @ 13:58 Hrs 2) Name of element tripped/restored: 220kV Trauma Centre Ckt - I restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230303122325 2023/03/03 12:23:26 1) Name of the substation and Time: Maharani Bagh 2) Name of element tripped/restored: At 11:56Hrs 220KV Mahrani Bagh-Trauma ckt-I tripped at Maharani Bagh end without indication. Load affected was 136MW (Trauma Centre and RK Puram). At 12:05Hrs Load normalised through 220KV B/C of RK Puram. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: NA Regards, Delhi SLDC 20230302084709 2023/03/02 08:47:10 1) Name of the substation and Time: At 03:14 HRS 220KV Kanjhawala 2) Name of element tripped/restored: 220KV BWN-KNJ ckt-I energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 03:14 HRS 220KV Kanjhawala 220KV BWN-KNJ ckt-I energized 6) Any other relevant information: All Tripped Element has been energized and system is normal at KV Kanjhawala Regards, Delhi SLDC 20230302083210 2023/03/02 08:32:11 1) Name of the substation and Time: 220 KV KNJ at 08:25 Hrs 2) Name of element tripped/restored: 220 KV KNJ-BWA ckt-II Charged at 08:25 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20230302061951 2023/03/02 06:19:52 1) Name of the substation and Time: 220 KV KNJ Corrigendum massage 2) Name of element tripped/restored: 100 MVA Px-II at 03:10 Hrs charge 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 100 MVA Px-II at 03:10 Hrs charge at 03:10 Hrs Regards, Delhi SLDC 20230302060610 2023/03/02 06:06:11 1) Name of the substation and Time: 220 KNJ 2) Name of element tripped/restored: 100 MVA Px-I and 220 KV BWA-KNJ Ckt-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 100 MVA Px-I charge at 03:10 Hra and 220 KV BWA-KNJ Ckt-I charge at 03:14 Hrs Regards, Delhi SLDC 20230302025834 2023/03/02 02:58:35 1) Name of the substation and Time: 220kV KNJ, at 02:04 Hrs 2) Name of element tripped/restored: 220kV BWN I and II, 100 MVA Tx-II 3) Relay Annunciation: Without indication/ Relay at KNJ end. at BWN end-B-Ph trip, Dist. trip, Zone-1,Fault location -8.06kM relay operated at 220 KNJ -II Ckt 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: System normalized , at 2:13 Hrs, 220kV Mundka CB closed and at 02:23 Hrs B/C closed. Load effected approx. 60 MW 6) Any other relevant information: System normalized 2:23 Hrs. Regards, Delhi SLDC 20230227154014 2023/02/27 15:40:14 1) Name of the substation and Time: At Mehrauli: 13:59hrs 2) Name of element tripped/restored: 220KV Dial-II 3) Relay Annunciation: B phase, BCU,E/F . 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: 220KV Bamnauli-I put ON at 220KV Dial. 6) Any other relevant information: 220KV B/C was in ON position at Dial end. Regards, Delhi SLDC 20230227153533 2023/02/27 15:35:34 1) Name of the substation and Time: At Mehrauli: 13:29hrs 2) Name of element tripped/restored: 220KV Dial-II 3) Relay Annunciation: B phase, D/P amd E/F. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV Bamnauli-I put ON for redundancy. 6) Any other relevant information: 220KV B/C was in ON position at Dial end. Regards, Delhi SLDC 20230223213757 2023/02/23 21:38:14 1) Name of the substation and Time: Test 2) Name of element tripped/restored: Test 3) Relay Annunciation: Test 4) Details of physically damaged equipment: Test 5) Immediate corrective/system normalization steps performed: Test 6) Any other relevant information: Test Regards, Delhi SLDC 20230223163621 2023/02/23 16:43:54 1) Name of the substation and Time: Test 2) Name of element tripped/restored: Test 3) Relay Annunciation: Test 4) Details of physically damaged equipment: Test 5) Immediate corrective/system normalization steps performed: Test 6) Any other relevant information: Test Regards, Delhi SLDC 20230223163400 2023/02/23 16:34:01 1) Name of the substation and Time: Test 2) Name of element tripped/restored: Test 3) Relay Annunciation: Test 4) Details of physically damaged equipment: Test 5) Immediate corrective/system normalization steps performed: Test 6) Any other relevant information: Test Regards, Delhi SLDC 20230223144108 2023/02/23 14:41:09 1) Name of the substation and Time: 220kV Kashmere Gate @ 14:23 Hrs 2) Name of element tripped/restored: 220kV K.Gate- SOW II tripped. 3) Relay Annunciation: Relay at K.Gate end: R-ph. Dist, Differential. Relay at SOW end - R -Ph, Dist. Zone-I , 4.425km 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: B/C On at K.Gate 6) Any other relevant information: Nil Regards, Delhi SLDC 20230222112431 2023/02/22 11:24:32 1) Name of the substation and Time: Testing. Please ignore 2) Name of element tripped/restored: Testing. Please ignore 3) Relay Annunciation: Testing. Please ignore 4) Details of physically damaged equipment: Testing. Please ignore 5) Immediate corrective/system normalization steps performed: Testing. Please ignore 6) Any other relevant information: Testing. Please ignore Regards, Delhi SLDC 20230221192953 2023/02/21 19:29:55 1) Name of the substation and Time: 220kV Okhla, At 18:34 Hrs 2) Name of element tripped/restored: 100 MVA tx-III with 33kV I/C-III 3) Relay Annunciation: 96, LV REF, FA, F9 ,inter triping 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Due to Monkey electrocuted, and no load effected Regards, Delhi SLDC 20230221151723 2023/02/21 15:17:23 1) Name of the substation and Time: 220KV SOW, 15:05Hrs. 2) Name of element tripped/restored: 20MVA-III along with 11KV I/C-III restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20230221151300 2023/02/21 15:13:01 1) Name of the substation and Time: 220KV SOW, 14:32Hrs. 2) Name of element tripped/restored: 20MVA-III along with 11KV I/C-III 3) Relay Annunciation: REFLV and E/F on 20MVA-III and Inter Tripping and Master Relay on 11KV I/C-III 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: Total load effected - 5MW for 13 Minutes Regards, Delhi SLDC 20230220200939 2023/02/20 20:09:40 1) Name of the substation and Time: 220KV DIAL, 13:58hrs 2) Name of element tripped/restored: 220KV Mehrauli-I. 3) Relay Annunciation: Gen Trip, R phase, zone-II. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: load taken on 220KV Bamnoli-I. 6) Any other relevant information: none. Regards, Delhi SLDC 20230220150235 2023/02/20 15:02:36 1) Name of the substation and Time: 220KV Tughlakabad, 14:46Hrs. 2) Name of element tripped/restored: 220KV Mehrauli-II restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20230220150022 2023/02/20 15:00:23 1) Name of the substation and Time: 220KV Tughlakabad, 13:58Hrs. 2) Name of element tripped/restored: 220KV Mehrauli-II tripped 3) Relay Annunciation: Differential Trip, R-Phase, Fault Location - 14.40Km and Fault Current, R-Phase - 10.61KA 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: 36MW Load effeted for 5 Minutes at 220KV Mehrauli, 33MW Load effected for 2 Minutes at 220KV Vasant Kunj and no load effected at 220KV DIAL. Regards, Delhi SLDC 20230220141640 2023/02/20 14:16:41 1) Name of the substation and Time: 220KV DIAL, 13:58Hrs. 2) Name of element tripped/restored: 220KV Mehrauli-I tripped 3) Relay Annunciation: General Trip, R-Phase and Zone-2 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20230220124923 2023/02/20 12:49:24 1) Name of the substation and Time: 220kV Trauma Center, 12:44Hrs 2) Name of element tripped/restored: 220kV Trauma center-Maharanibagh Ckt-1 charged at no load 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20230219185041 2023/02/19 18:50:42 1) Name of the substation and Time: 220kV Subji Mandi @ 18:25Hrs 2) Name of element tripped/restored: 16MVA Tx got tripped with 33kV Tripolia Feeder @18:15Hrs. Differential relay. Tx restored @ 18:25 Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: Tx Tripped with O/G Tripolia Feeder. Regards, Delhi SLDC 20230219082035 2023/02/19 08:20:36 1) Name of the substation and Time: 220kV MLI, 07:15 Hrs 2) Name of element tripped/restored: 220kV TKD ckt-II, 08:12 hrs Charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220kV TKD ckt-II, 08:12 hrs Charged Regards, Delhi SLDC 20230219074531 2023/02/19 07:45:32 1) Name of the substation and Time: At 07:15 HRS 220KV Mehrauli 2) Name of element tripped/restored: 220KV Tuglakabad -II 3) Relay Annunciation: Relay at TUGB gen treip b-phase trip,diffrential trip 3 PHase,Fault current 10.748KA C- phase ,Location 4.60KM Relay Meharuli R,Y,B phase,Zone-I Diffrential 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 07:23 HRS 220KV Bus coupler Closed at 220KV Mehrauli Syatem normalised 6) Any other relevant information: Approx 81 MW Load effected Regards, Delhi SLDC 20230217063410 2023/02/17 06:34:11 1) Name of the substation and Time: 220kV Parkstreet @ 06:23 Hrs 2) Name of element tripped/restored: 33kV Incomer-II Restored on 33KV Bus-I in reference to previous tripping. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: 33kV Bus-II yet to be restored. Regards, Delhi SLDC 20230217052231 2023/02/17 05:22:32 1) Name of the substation and Time: 220kV Parkstreet @ 04:24Hrs 2) Name of element tripped/restored: 33kV Incomer-II Tripped. Possibly due to Monkey Fall and R Phase Conductor of Bus snapped. Approx 9 MW load affected. 3) Relay Annunciation: O/C R Ph. and Y Ph. , Any Trip. 4) Details of physically damaged equipment: R ph. Conductor of 33kV Bus. 5) Immediate corrective/system normalization steps performed: Thorugh Inspection and Shifting of Feeders to Another Bus. 6) Any other relevant information: NA Regards, Delhi SLDC 20230214165930 2023/02/14 16:59:30 1) Name of the substation and Time: 220kV Masjid Moth @ 16:53 2) Name of element tripped/restored: 33kv Incomer I and II Energised Of 100MVA Tx I and II. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230214093920 2023/02/14 09:39:21 1) Name of the substation and Time: 220kV M/Moth, 09:05 Hrs 2) Name of element tripped/restored: 100 MVA Tx-I, Energized on no load 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 09:05 Hrs, Energized on no load 6) Any other relevant information: - Regards, Delhi SLDC 20230214084013 2023/02/14 08:40:14 1) Name of the substation and Time: 220kV, GZP, at 07:55 Hrs 2) Name of element tripped/restored: 160 MVA-III with I/C-III 3) Relay Annunciation: Differential relay RY and B-Ph, HIS trip, O/C Y and Y-Ph 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: No load effected Regards, Delhi SLDC 20230213195245 2023/02/13 19:52:46 1) Name of the substation and Time: At 18:55 HRS 220KV MAsjid MOTH 2) Name of element tripped/restored: 220KV Maharani Bagh Ckt-I ,with 220KV Bus-I and II Energized with 220KV Buscoupler 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 18:55 HRS 220KV Maharani Bagh Ckt-I ,with 220KV Bus-I and II Energized with 220KV Buscoupler Regards, Delhi SLDC 20230213170230 2023/02/13 17:02:30 1) Name of the substation and Time: 220KV GZP @16.58 2) Name of element tripped/restored: 220KV PPG RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230213164930 2023/02/13 16:49:31 1) Name of the substation and Time: 220kv ppg @16.35 2) Name of element tripped/restored: 220kv gazipur 3) Relay Annunciation: any trip,ef stage 1 ,86 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230213164901 2023/02/13 16:49:02 1) Name of the substation and Time: 220kv ppg @16.35 2) Name of element tripped/restored: 220kv gazipur 3) Relay Annunciation: any trip,ef stage 1 ,86 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230213163011 2023/02/13 16:30:12 1) Name of the substation and Time: 220kV Harshvihar, 16:26 2) Name of element tripped/restored: 220kV Harshvihar-Preetvihar ckt-II charged 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20230213161518 2023/02/13 16:15:18 1) Name of the substation and Time: 220kV Mazjid Mod, 13:58Hrs 2) Name of element tripped/restored: 220kV Maharani Bagh- Mazjid Mod Ckt I charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20230212013550 2023/02/12 01:35:51 1) Name of the substation and Time: PPK-3 2) Name of element tripped/restored: At 00:32Hrs 160MVA T/F-2 tripped on LV REF. Load affected was 20MW. At 00:40Hrs load normalised through 66KV B/C. At 01:34Hrs 160MVA T/F-2 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230211183250 2023/02/11 18:32:50 1) Name of the substation and Time: 220kV Mehrauli @ 18:00Hrs 2) Name of element tripped/restored: 100MVA Tx 2 with its 66kv Incomer Tripped. 3) Relay Annunciation: Differential Prot., Bucchholz, 86 Master 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Load came on other Transformers. 6) Any other relevant information: Yard is being checked for any other information Regards, Delhi SLDC 20230209145101 2023/02/09 14:51:01 1) Name of the substation and Time: 220kV Shalimarbagh, at 14:09 Hrs 2) Name of element tripped/restored: 220kV Bawana Ckt-I and SGTN-II with effected 220kV DMRC-I, WZP-I,WZP-II, SGTN-I 3) Relay Annunciation: Bus-Bar operated at Shalimarbagh end and At SGTN-II (In Main-I,Y and B-Ph, Zone-I) and (In Main-II,Y and B-Ph, Distance-2.53KM) 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: System is normalized at 14:26Hrs except SGTN-II 6) Any other relevant information: Approx. load effected 171 MW Regards, Delhi SLDC 20230208172558 2023/02/08 17:25:58 1) Name of the substation and Time: 220kV RPH, at 17.05 Hrs 2) Name of element tripped/restored: 33kV I/C-II (Bay-22) and 33kV Bay no. 18 due to monkey electrocuted 3) Relay Annunciation: 33kV I/C-II (Bay-22) due to O/C and E/F and 33kV Bay no. 18 on distance protection relay R and Y -Ph 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: System is normalized at 17.20 hrs 6) Any other relevant information: Approx. load effect- 10MW Regards, Delhi SLDC 20230204084504 2023/02/04 08:45:05 1) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: At 06:35Hrs 160MVA T/F-1 tripped on PRV Differential. No load was affected 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230203063957 2023/02/03 06:39:58 1) Name of the substation and Time: 400kV Bamnauli, at 04:00 Hrs 2) Name of element tripped/restored: 400kV Jhatikara Ckt-II 3) Relay Annunciation: Over-voltage relay 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 05:55 hrs, Energized 6) Any other relevant information: - Regards, Delhi SLDC 20230202195020 2023/02/02 19:50:21 1) Name of the substation and Time: 220kV RPH, 18:06 Hrs 2) Name of element tripped/restored: 33kV I/C-II with 33kV BUS(RHS) and bay-18(Town Hall) 3) Relay Annunciation: O/C and E/F on 33kV I/C-II and bay-18(Town Hall) 4) Details of physically damaged equipment: R and Y- Ph CT damaged of bay-18(Town Hall) 5) Immediate corrective/system normalization steps performed: System is normalized at 19:30 Hrs except bay-18(Town Hall) 6) Any other relevant information: Approx. load effected 22Mw Regards, Delhi SLDC 20230130212339 2023/01/30 21:23:40 1) Name of the substation and Time: At 220KV PPK-I (18:05hrs) 2) Name of element tripped/restored: 220KV Dwarka-II, and 66KV I/C-II and III. 3) Relay Annunciation: Tripped on E/f , R and B phase. 4) Details of physically damaged equipment: 66KV Bphase isolator jumper of DMRC snapped. 5) Immediate corrective/system normalization steps performed: System normalized after yard clearance. 6) Any other relevant information: None. Regards, Delhi SLDC 20230130211633 2023/01/30 21:16:33 1) Name of the substation and Time: At 220KV PPK-I (17:50hrs) 2) Name of element tripped/restored: 220KV Dwarka-II and 66KV I/C-II and III. 3) Relay Annunciation: Tripped on E/F , R and B phase. 4) Details of physically damaged equipment: 66KV B-phase isolator jumper of DMRC-I snapped. 5) Immediate corrective/system normalization steps performed: system normalized after yard clearance at 18:05hrs. 6) Any other relevant information: None. Regards, Delhi SLDC 20230130170433 2023/01/30 17:04:34 1) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 15:25Hrs 100MVA 220/33KV T/F-4 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230130085133 2023/01/30 08:51:34 1) Name of the substation and Time: 220kv okhla @ 08.26 2) Name of element tripped/restored: 100 mva tr-4 3) Relay Annunciation: Diff optd ,86,RYB trip 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230129233625 2023/01/29 23:36:25 1) Name of the substation and Time: 220kv peera [email protected] 2) Name of element tripped/restored: 100 mva tr-1 3) Relay Annunciation: diff optd ,trip ABC,86 AB,LV REF 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: LOAD Manged by other transformer 6) Any other relevant information: na Regards, Delhi SLDC 20230129173753 2023/01/29 17:37:54 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 17:10Hrs 100MVA 220/66KV T/F-2 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230129170725 2023/01/29 17:07:26 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 16:35Hrs 100MVA 220/66KV T/F-2 and 66KV B/C tripped. Load affected was 25MW. Discom have shifted its load. 3) Relay Annunciation: Relay on 66KV B/C are O/C R-phase E/F. Relay on 66KV I/C-II is E/F. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230129163411 2023/01/29 16:34:12 1) Name of the substation and Time: Maharani Bagh 2) Name of element tripped/restored: At 15:50Hrs 220KV Maharani Bagh-Trauma Centre ckt. I and II and 220KV Maharani Bagh-Masjid Moth ckt. I and II caught fire near barapula flyover. Fire Brigade dept. has also been informed. Load affected was approx. 320MW. Load of Trauma Centre grid normalised through Tughlakabad-Rk Puram ckt. while for Masjid Moth discoms have been asked to shift the load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230124145518 2023/01/24 14:55:19 1) Name of the substation and Time: At 14:35HRS 220KV Lodhi road 2) Name of element tripped/restored: 33KV I/C No-3 3) Relay Annunciation: 86A,B 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 14:45HRS 33KV I/C No-3 Energized 6) Any other relevant information: Load effected approx 11MW Regards, Delhi SLDC 20230123214702 2023/01/23 21:47:02 1) Name of the substation and Time: 220kV Gopalpur@ 21:27Hrs 2) Name of element tripped/restored: 220kV Mandola - Gopalpur ckt 1 normal. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230123195920 2023/01/23 19:59:20 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: At 19:33Hrs supply fail of 220KV Mandaula ckt-I. Load affected was 47MW. At 19:35Hrs Load normalised through 220KV SOW ckt-II. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230120112843 2023/01/20 11:28:44 1) Name of the substation and Time: 220kV Kanjhawala, 10:30Hrs 2) Name of element tripped/restored: 66kV Incomer of 160MVA Transformer NO.3 3) Relay Annunciation: Master Trip, 50/51, IP Trip 4) Details of physically damaged equipment: R-Phase Isolator of 66kV Bus-II for Incomer NO.3 of 160MVA Transformer NO.-III. 5) Immediate corrective/system normalization steps performed: 66kV Feeders are shifted to 66kV BUS-I 6) Any other relevant information: At 11:05Hrs Load shifted to 66kV BUS-I, 60MW Load affected for 35 Minutes, Incomer of 160 MVA Transformer No-3 charged at 11:16 Hrs and connected to 66kV BUS-I. Regards, Delhi SLDC 20230119172230 2023/01/19 17:22:30 1) Name of the substation and Time: 220kv dev [email protected] 2) Name of element tripped/restored: 100 mva tr-4 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230119172103 2023/01/19 17:21:04 1) Name of the substation and Time: 220kv dev nagar @17.08 2) Name of element tripped/restored: 100 mva tr-4 3) Relay Annunciation: nutral displacment relay 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230119161755 2023/01/19 16:17:56 1) Name of the substation and Time: 220kv saritavihar@ 16.15 2) Name of element tripped/restored: 220kv pragati ckt charged 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230119144232 2023/01/19 14:42:32 1) Name of the substation and Time: 220kv [email protected] 2) Name of element tripped/restored: 220kv pragari 3) Relay Annunciation: y,b ph trip,z1, fault location 3.412 km 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230119113054 2023/01/19 11:30:55 1) Name of the substation and Time: 220 kv lodhiroad @11.23 2) Name of element tripped/restored: 100 mva tr-3 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: restored Regards, Delhi SLDC 20230118204348 2023/01/18 20:43:49 1) Name of the substation and Time: Lodhi Road 2) Name of element tripped/restored: At 19:10Hrs 100MVA T/F-3 tripped on 86. T/F was at no load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230116093322 2023/01/16 09:33:23 1) Name of the substation and Time: At 220KV Okhla(09:15hrs) 2) Name of element tripped/restored: 66KV I/C-I and II. 3) Relay Annunciation: O/C, R-phase. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: BRPL informed to C/O load. 6) Any other relevant information: Monkey jump on 66KV common jumper -bus isolators of 20MVA-I transformer. Regards, Delhi SLDC 20230116093141 2023/01/16 09:31:42 1) Name of the substation and Time: At 220KV Okhkla(08:49hrs) 2) Name of element tripped/restored: 66KV I/C-I and II. 3) Relay Annunciation: O/C , R-phase. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: BRPL informed to C/O load. 6) Any other relevant information: Monkey jump on 66KV common jumper -bus isolators of 20MVA-I transformer. Regards, Delhi SLDC 20230114153200 2023/01/14 15:32:01 1) Name of the substation and Time: 220kV Mehrauli @ 14:54Hrs 2) Name of element tripped/restored: 220kV TGK-2 restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230114113423 2023/01/14 11:34:24 1) Name of the substation and Time: 220kV Maehrauli @ 10:35Hrs 2) Name of element tripped/restored: 220kV Tughlakabad ckt 2 tripped. 3) Relay Annunciation: Line Diffrential Y and B Phase, Wrongly shown distance - 25.3kM, Fauly Current - 24.7kA. Relay at TGK end Zone-1 and 2, Y and B phase, Line Differential, Distance- 1.9km, Fault Current 24.3kA (Y phase) and 24.7kA(B-phase). 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Bus Coupler Put ON 6) Any other relevant information: 220kV Bus Coplers of Mehrauli and DIAL were in OFF position however 66kV B/C of DIAL was ON. This caused high loading of Txs at DIAL momentarily. Regards, Delhi SLDC 20230113162928 2023/01/13 16:29:29 1) Name of the substation and Time: 400/220kv Dwaraka @ 16:12 Hrs 2) Name of element tripped/restored: 220kV Bus-1 Section-1 restored @ 16:12 Hrs 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230113143719 2023/01/13 14:37:20 1) Name of the substation and Time: 400/220kV Dwaraka 2) Name of element tripped/restored: 220kV Bus-1 Section-1 3) Relay Annunciation: Low Gas Pressure Density 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Feeder shifted to other Bus section 6) Any other relevant information: NIL Regards, Delhi SLDC 20230112190554 2023/01/12 19:05:55 1) Name of the substation and Time: At 19:00 HRS 220KV BTPS 2) Name of element tripped/restored: 220KV BLLBGH-Badarpur CKT-I Energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV BLLBGH-Badarpur CKT-I Energized Regards, Delhi SLDC 20230112181535 2023/01/12 18:15:36 1) Name of the substation and Time: At 16:55 HRS 220KV BTPS 2) Name of element tripped/restored: 220KV Balabhgasrh CKT-I tripped at BTPS end only .CVT is available at BTPS end 3) Relay Annunciation: L!-L3 Fault Location 24.7KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Noload effected 6) Any other relevant information: - Regards, Delhi SLDC 20230112121028 2023/01/12 12:10:28 1) Name of the substation and Time: 220KV Preet Vihar, 09:38Hrs. 2) Name of element tripped/restored: 220KV Harsh Vihar-II restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20230112081155 2023/01/12 08:11:56 1) Name of the substation and Time: At 220KVPreet Vihar(06:51hrs) 2) Name of element tripped/restored: 220KV Harsh Vihar ckt-II 3) Relay Annunciation: 86A, 86B, 50/51G. 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: Load already running on 220KV Harsh Vihar- Preet Vihar ckt-I. 6) Any other relevant information: ckt remains charged from Harsh Vihar end. Regards, Delhi SLDC 20230109042452 2023/01/09 04:24:53 1) Name of the substation and Time: 220kv sgtn @ 3.54 am 2) Name of element tripped/restored: 220kv smb ckt-1 tripped on over voltage 3) Relay Annunciation: over coltage r ph,86 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: 220kv b/c made on 6) Any other relevant information: na Regards, Delhi SLDC 20230108212624 2023/01/08 21:26:24 1) Name of the substation and Time: 220kV IP @20.57 2) Name of element tripped/restored: 100 MVA TR-1 CHARGED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230108082603 2023/01/08 08:26:04 1) Name of the substation and Time: At 400kV Mundaka 2) Name of element tripped/restored: 400kV Bus-II Tripped @ 04:26Hrs. NO LOAD AFFECTED. 3) Relay Annunciation: LBB, VT Fail, TC-1 and 2, 395 Y phase (ICT-1) 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Load came on 400kV BUS-1. 6) Any other relevant information: ONE and HALF breaker scheme. Regards, Delhi SLDC 20230107171351 2023/01/07 17:13:52 1) Name of the substation and Time: At 15:22HRS 220KV IP 2) Name of element tripped/restored: Tripping of 1-100MVA-I with 33KV I/C-I 2-33KVI/C No-II 3) Relay Annunciation: 1-100MVA-I with 33KV I/C-I Both HV and LV O/C and E/F 2-33KVI/C No-II O/C and E/F 4) Details of physically damaged equipment: 1-33KV East Bus-II LA B and Y phase Damaged (02Nos LA) 2-B phase CB Pole damage of 33KV I/C-I 5) Immediate corrective/system normalization steps performed: At 15:55 HRS Load taken on 100MVA-III 16:20 HRS 33KV Bus-I Charged by 33KV I/C-II and system normalized 6) Any other relevant information: approx 70MW Load affected Regards, Delhi SLDC 20230107083553 2023/01/07 08:35:53 1) Name of the substation and Time: At 7:01 Hrs. CCGT BAWANA 2) Name of element tripped/restored: 400KV Bay#413 Bhadurgarh and Tie Bay#414(400KV Bhadurgarh-Bhiwani) 3) Relay Annunciation: Differential,R-Phase 4) Details of physically damaged equipment: R-Phase conductor snapped 5) Immediate corrective/system normalization steps performed: inform to NRLDC to put ON 400 KV Interconnector Bay#419 and 423 6) Any other relevant information: NA Regards, Delhi SLDC 20230105121802 2023/01/05 12:18:03 1) Name of the substation and Time: 220kv Kanjhawala 2) Name of element tripped/restored: 66kv I/c-1 and 3 tripped with Tripping of 66kV Karala-3 and RG-23 Ckt -1 @ 09:00 Hrs. 66kV I/c-3 [email protected] and I/c - 1 restored @ 10:30 Hrs. 66kV Karala-3 and RG-23 Ckt-1 is in Breakdown. 3) Relay Annunciation: O/C, E/F, 86 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20230105094432 2023/01/05 09:44:33 1) Name of the substation and Time: 220kV RHN I, at 09:20 Hrs 2) Name of element tripped/restored: 66kV I/C-III and IV 3) Relay Annunciation: 66kV I/C-III- O/C, Prot. Opt, 86, O/C stage-I, O/C- Y pH 66kV I/C-IV- Any trip, O/C stage-I, O/C -Y and B Ph, 86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Normalized system at 09:26 Hrs 6) Any other relevant information: Approx. load effected 170 MW Regards, Delhi SLDC 20230104232847 2023/01/04 23:28:48 1) Name of the substation and Time: 220kV Sabzi mandi, at 22:50 Hrs. 2) Name of element tripped/restored: 100 MVA Tx.-I 3) Relay Annunciation: Differential A, B C trip, Deiff. High speed trip, 30A- Buchholz relay, REF HV,REF LV,186 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Tx. tripped on no load Regards, Delhi SLDC 20230104154250 2023/01/04 15:42:51 1) Name of the substation and Time: 220KV Sabji Mandi, 15:20Hrs. 2) Name of element tripped/restored: 100MVA-I restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: 100MVA-I charged at no-load which was tripped off at 16:20Hrs. on 21.12.2022 Regards, Delhi SLDC 20230104153923 2023/01/04 15:39:24 1) Name of the substation and Time: 220KV Sabji Mandi, 15:20Hrs. 2) Name of element tripped/restored: N/A 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: 100MVA-I charged at no-load which was tripped off at 16:20Hrs. on 21.12.2022 Regards, Delhi SLDC 20230103054954 2023/01/03 05:49:55 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 01:22Hrs 100MVA T/F-2 and 160MVA T/F-4 tripped on 195. Relay on 66KV I/C-2 and 66KV I/C-4 are O/C E/F Y-phase. 66KV C-Dot ckt-II also tripped on O/C E/F Y-phase(Blast observed in Y-phase CB pole). Load affected was approx. 35MW. Discoms were asked to shift their load. At 04:05Hrs 160MVA T/F-4 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230102233945 2023/01/02 23:39:46 1) Name of the substation and Time: Maharani Bagh 2) Name of element tripped/restored: 220KV Maharani Bagh-Sarita Vihar ckt charged at 23:37Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230102221748 2023/01/02 22:17:49 1) Name of the substation and Time: Maharani Bagh 2) Name of element tripped/restored: 220KV Maharani Bagh-Sarita Vihar ckt tripped at both end at 21:54Hrs. Relay at Maharani Bagh end are Z-2 R-phase 9.3km Ir=13.3KA. Relay at Sarita Vihar end are Z-1 R-phase 0.4km Ir=6.6KA. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20230102062434 2023/01/02 06:24:35 1) Name of the substation and Time: At 06:18 HRS 220KV SGTN 2) Name of element tripped/restored: 220KV SMB-I Circuit breaker closed/energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 06:18 HRS 220KV SMB-I Circuit breaker closed/energized System normal Regards, Delhi SLDC 20230102043004 2023/01/02 04:30:04 1) Name of the substation and Time: At 04:01 HRS 220KV SGTN 2) Name of element tripped/restored: 220KV SGTN-SMB ckt-I Only breaker trip 3) Relay Annunciation: 86A,B,86R2,Y2.B2,over voltage 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 04:09 HRS\ 220KV Buscoupler closed Load become normal 6) Any other relevant information: Approx 23MW Load efected Regards, Delhi SLDC 20230102014320 2023/01/02 01:43:21 1) Name of the substation and Time: At 01:16 HRS 220KV Maharani Bagh 2) Name of element tripped/restored: 220KV MBG-SVR CKT 3) Relay Annunciation: At SVR End -Y-phase trip Zone-I,Distance 8.86 KM Ia 165.3A,Ib 5.352 KA,Ic 92.18KA In 5.56KA,86 220KV MBG-end Y -ohase trip,Distance 8.3KM,L2E,IL1 0.0KA,IL2 15.19KA,IL3 0.0KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: No Load effected 6) Any other relevant information: - Regards, Delhi SLDC 20221230130200 2022/12/30 13:02:01 1) Name of the substation and Time: At12:54 HRS 220KV Gazipur 2) Name of element tripped/restored: Corrigendum message regarding 66KV Vivek vihar ckt-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Message recieved from grid Operation staff that fault found in Common Busbar jumper of 66KV Vivekvihar ckt-II.Earlier tripping message given by staff was not correct. Regards, Delhi SLDC 20221230113510 2022/12/30 11:35:10 1) Name of the substation and Time: At 10:25 HRS 220KV Gazipur 2) Name of element tripped/restored: Tripping of 66KV I/C-I,II and III 3) Relay Annunciation: 66KV I/C-I No indication 66KV I/C-II E/F,O/C,Y phase 86 66KV I/C-III E/F,O/C,R,Y,B phase , Gen Trip 86 4) Details of physically damaged equipment: 66KV Vivek vihar-II cable caught fire and feeder didnot trip 5) Immediate corrective/system normalization steps performed: At 10:35 HRS 66KV I/C-I,II and III enegized sytem became normal 6) Any other relevant information: Load affected approx 60MW Regards, Delhi SLDC 20221229124455 2022/12/29 12:44:56 1) Name of the substation and Time: Gazipur 2) Name of element tripped/restored: At 11:57Hrs 66KV I/C-2, 66KV I/C-3 and 66KV B/C tripped on O/C Y-phase with the tripping of 66KV Patparganj Industrial Area ckt which tripped on distance relay Y-phase 1km. Grid staff have reported blast in R and Y-phase CB Pole of 66KV Patparganj Ind. Area. Load affected was 65MW. At 12:13Hrs 66KV I/C-2 and 66KV I/C-3 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221228091713 2022/12/28 09:17:14 1) Name of the substation and Time: At 07:39 HRS At 220KV TUGLAKABAD 2) Name of element tripped/restored: 160MVA-II with 66KV I/C -II tripped 3) Relay Annunciation: 160MVA-II PRV Trip,Gen Trip 66KV I/C-II 3 phase initiate fault,E/F stage-3 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: No Load effected Message conveyed at 09:03 HRS from TUGB Staff 6) Any other relevant information: - Regards, Delhi SLDC 20221228030205 2022/12/28 03:02:05 1) Name of the substation and Time: At 02:58 HRS 220KV Ridge valley 2) Name of element tripped/restored: 160MVA-Tx-No-II Energised 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 160MVA-Tx-No-II Energised Ridge valley S/Stn is Normalised Regards, Delhi SLDC 20221228024909 2022/12/28 02:49:10 1) Name of the substation and Time: At 02:43 HRS 220KV Ridge Valley 2) Name of element tripped/restored: 220KV R/V-NRN Circuit 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV Circuit Breaker of Naraina CKT closed at Ridge valley 160MVA-II is already tripped on OLTC Buchholz Regards, Delhi SLDC 20221228022435 2022/12/28 02:24:36 1) Name of the substation and Time: At 01:14 HRS 220KV Tuglakabad 2) Name of element tripped/restored: 220KV TUGB-RKP-CKT-I Tripped(TUGB-RKP-CKT-II was already off due to High voltage at 23:27 HRs Dated 27.12.2022) 220KV Ridge valley Supply failed 220KV Circuit Breaker of Naraian ckt tripped 86 A,B 160MVA TX-No-II tripped without indication 220KV naraina half Bus supply failed 3) Relay Annunciation: At Tuglakabad R phase to neatral Zone-I,Distance 0 KM,If -R phase 14.97KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 01:20 HRS 220KV Half Bus Of Naraina S/stn normalised through 220KV Bus coupler through 220KV Dwarka ckt I and II At 01:29 HRS 220KV RKP-TUGB CKT-II energised At 01:30HRS 220KV Ridgevalley substattion normalised throgh RKP-CKT-I 6) Any other relevant information: Approx Load effected 88MW Regards, Delhi SLDC 20221227124924 2022/12/27 12:49:25 1) Name of the substation and Time: 220KV Sabzi Mandi, 12:40Hrs. 2) Name of element tripped/restored: 100MVA-II along with 33KV I/C-II restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20221227124052 2022/12/27 12:40:52 1) Name of the substation and Time: 220KV Sabzimandi, 12:20Hrs. 2) Name of element tripped/restored: 100MVA-II along with 33KV I/C-II tripped 3) Relay Annunciation: HV CB open and LV CB open on 100MVA-II and no indication showing on 33KV I/C-II 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: Total load effected - 58MW, 100MVA-I along with 33KV I/C-I is already under shutdown. Regards, Delhi SLDC 20221226163302 2022/12/26 16:33:03 1) Name of the substation and Time: 220KV Sabzi Mandi, 16:20Hrs. 2) Name of element tripped/restored: 100MVA-II along with 33KV I/C-II 3) Relay Annunciation: HV CB open and LV CB open on 100MVA-II and no indication on 33KV I/C-II 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: Total load effected - 49MW, 100MVA-I along with 33KV I/C-I is already under shutdown. Regards, Delhi SLDC 20221226093020 2022/12/26 09:30:21 1) Name of the substation and Time: 220kv Mehrauli @ 09:22 Hrs 2) Name of element tripped/restored: Tx 1 and # Normal/ Restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221226092306 2022/12/26 09:23:07 1) Name of the substation and Time: 220kV Mehrauli @ 09:05 Hrs 2) Name of element tripped/restored: 100MVA Tx 1 and 3 Tripped 3) Relay Annunciation: O/C, B-ph on 66kV I/c-1, Incomer-3 Tripped with Incomer-1, Both Tx were parallel. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Load shifted to nearby Grids and Txs are being done normal at Mehrauli. 6) Any other relevant information: Approx Load on both Tx was 180MW. Before Tripping DISCOM was requested to reduce the Load immediately. Regards, Delhi SLDC 20221225155230 2022/12/25 15:52:31 1) Name of the substation and Time: At220 KV Gopalpur (15:06hrs) 2) Name of element tripped/restored: 220 KV Mandola-I 3) Relay Annunciation: Tripped without Indication at Gopal pur end. Tripped on R and Y Phase, 9.8 KA at Mandola End. 4) Details of physically damaged equipment: NONE 5) Immediate corrective/system normalization steps performed: 220 KB B/C put On at Gopalpur. 6) Any other relevant information: NIL Regards, Delhi SLDC 20221224070456 2022/12/24 07:04:57 1) Name of the substation and Time: 220KV Patparganj, 07:00Hrs. 2) Name of element tripped/restored: 33KV I/C-II restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20221224070231 2022/12/24 07:02:32 1) Name of the substation and Time: 220KV Patparganj, 06:28Hrs. 2) Name of element tripped/restored: 33KV I/C-I restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20221224065640 2022/12/24 06:56:41 1) Name of the substation and Time: 220KV Patparganj, 06:01Hrs. 2) Name of element tripped/restored: 33KV I/C-I, 33KV I/C-II and 33KV Karkardooma-I 3) Relay Annunciation: Any Trip and E/F Stage-1 on 33KV I/C-I, Second Hormony Block on 33 I/C-II and Any Trip, Zone-2, RYB Phase Trip, E/F Stage-1 and O/C Stage-1 on 33KV Karkardooma-I 4) Details of physically damaged equipment: R-Phase CT of 33KV Karkardooma-I 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: Total load effected - 22MW Regards, Delhi SLDC 20221223045201 2022/12/23 04:52:02 1) Name of the substation and Time: 220kV Lodhi Road @ 4:12 Hrs 2) Name of element tripped/restored: CB of 220kv M. Bagh Ckt-1 Tripped. Line remained charged. 3) Relay Annunciation: Dist Prot. B- Phase, 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: 220kV Bus Coupler Put ON after Yard checked. 6) Any other relevant information: Line remained charged from M. Bagh End. Only CB Tripped at Loadhi Road. Regards, Delhi SLDC 20221223044503 2022/12/23 04:45:03 1) Name of the substation and Time: 220kv sarita vihar @ 4:12 Hrs 2) Name of element tripped/restored: 220kv Sarita Vihar- Pragati Tripped 3) Relay Annunciation: Z-1, Y phase, 2.872km, 8.471kA 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: clearance requested. 6) Any other relevant information: nil Regards, Delhi SLDC 20221222121759 2022/12/22 12:17:59 1) Name of the substation and Time: 400kV Bawana, at 09:54 Hrs 2) Name of element tripped/restored: 220kV Bus- Bar operated with 220kV I/C- I of 315 MVA tx. -I tripped, 220 kV RHN I Ckt-I and 220 KV SMB -I, 3) Relay Annunciation: 220kV Bus- Bar operated 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 09:58 Hrs, 220 kV B/C put on and normalized 6) Any other relevant information: -Approx. load effected -200 MW for 4 minuts only Regards, Delhi SLDC 20221221164619 2022/12/21 16:46:20 1) Name of the substation and Time: 220kv Sabji Mandi @ 16:20 Hrs 2) Name of element tripped/restored: 100MVA Tx 1 Tripped 3) Relay Annunciation: Diff ABC, HV REF, 95, 186 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Load Normal through 33kV Buscoupler @ 16:35 Hrs 6) Any other relevant information: 33MW Load affected Regards, Delhi SLDC 20221221055749 2022/12/21 05:57:49 1) Name of the substation and Time: 220kv [email protected] 2) Name of element tripped/restored: 220kv pragati restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221221054033 2022/12/21 05:40:33 1) Name of the substation and Time: 220kv mbagh @5.33 2) Name of element tripped/restored: 220kv saritavihar line restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221221053934 2022/12/21 05:39:35 1) Name of the substation and Time: 220kv tuglakabad @5.26 2) Name of element tripped/restored: 220kv mehroli restroed 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221221034628 2022/12/21 03:46:29 1) Name of the substation and Time: 400KV Bamnauli, 03:41Hrs. 2) Name of element tripped/restored: 400KV Tughlakabad-I 3) Relay Annunciation: Restored 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20221221034237 2022/12/21 03:42:38 1) Name of the substation and Time: 400KV Bawana, 03:19Hrs. 2) Name of element tripped/restored: 400KV Maharani Bagh-II 3) Relay Annunciation: Zone-1, Fault Location - 17.32m 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20221221025931 2022/12/21 02:59:32 1) Name of the substation and Time: 400KV Bamnauli, 02:38Hrs. 2) Name of element tripped/restored: 400KV Tughlakabad-I 3) Relay Annunciation: Zone-1, B-Phase, Fault Location - 5.413Km and Fault Current, B-Phase - 17.39KA 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20221221023742 2022/12/21 02:37:42 1) Name of the substation and Time: 220KV GEETA COLONY @02.34 2) Name of element tripped/restored: 33 KV I/C -1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20221221022840 2022/12/21 02:28:41 1) Name of the substation and Time: 220KV GEETACOLNY @ 02.10 HR 2) Name of element tripped/restored: 33 KV I/C -1 ALONG WITH 33 KV KAILASH NAGAR CKT-1 3) Relay Annunciation: 30CB AUTO TRIP, 86,OC, 30 CB AUTO TRIP,OC START,Z1 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: 33 KV B/C CLOSED @ 02.11 AND LOAD NORMAL Regards, Delhi SLDC 20221221022612 2022/12/21 02:26:13 1) Name of the substation and Time: 220kv tuglakabad @ 02.06 hrs 2) Name of element tripped/restored: 220kv mehrouli-ckt-2 3) Relay Annunciation: z1,falut location 4km,r ph trip, fault current 22.08 kA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20221221020050 2022/12/21 02:00:51 1) Name of the substation and Time: 220 kv btps @01.29 hrs 2) Name of element tripped/restored: 220kv Tuglakbad ckt-1 3) Relay Annunciation: z1,y ph,falut location 0.76 km 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: ckt tripped both ends Regards, Delhi SLDC 20221221013031 2022/12/21 01:30:32 1) Name of the substation and Time: 220KV Maharani Bagh, 01:07Hrs. 2) Name of element tripped/restored: 220KV Sarita Vihar 3) Relay Annunciation: Fault Location - 7.2Km, Faulty Phase - R-Phase, Fault Phase, R-Phase - 15.44Km, Z-1, Z-2 and Z-3 opearted. 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20221221011902 2022/12/21 01:19:03 1) Name of the substation and Time: 220KV Sarita Vihar, 00:46Hrs. 2) Name of element tripped/restored: 220KV Pragati 3) Relay Annunciation: 86X, 186, Distance Protection Zone-1, Active Group-1, Fault Phase - Y-Phase, Fault Location - 7.901Km and Fault Current, Y-Phase - 11.05KA at Sarita Vihar end and 86A, 86B, 86C, 180A, 180B, Distance Protection Zone-1, 195CC, Fault Phase - Y-Phase, Fault Location - 5.091Km and Fault Current, Y-Phase - 7.215KA at Pragati end. 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N?A Regards, Delhi SLDC 20221220170533 2022/12/20 17:05:34 1) Name of the substation and Time: 400kv [email protected] 2) Name of element tripped/restored: 220kv ppk-1 ckt-2 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221220092512 2022/12/20 09:25:13 1) Name of the substation and Time: At 05:27 HRS 220KV Gopalpur 2) Name of element tripped/restored: 220KV mandola-I tripped at gopalpur end only 3) Relay Annunciation: Zone-I,b phase,R,Y,b ph,F/L 3.168KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 05:30HRS 220KV Buscoupler closed and sytem normalised 6) Any other relevant information: approx 48MW effected Regards, Delhi SLDC 20221220091712 2022/12/20 09:17:13 1) Name of the substation and Time: At 06:48 HRS 400KV Mundka 2) Name of element tripped/restored: 400KV Jhajjar-I tripped 3) Relay Annunciation: R-Phase,zone-I,Protection -I,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 08:48 HrS 400KV jhajjar-I charged but didnot hold Regards, Delhi SLDC 20221220091232 2022/12/20 09:12:33 1) Name of the substation and Time: At 05:30HRS 400KV Bawana 2) Name of element tripped/restored: 400KV MBG-II tripped at Bawana end only 3) Relay Annunciation: R,Y,B Ph trip,zone-I,F/L 09.384KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: AT 06:30Hrs 400KV MBG-II charged system normal Regards, Delhi SLDC 20221220090844 2022/12/20 09:08:45 1) Name of the substation and Time: At 05:06 HRS 400KV MBG 2) Name of element tripped/restored: 220KV SVR CKT tripped 3) Relay Annunciation: Y ph,L2-E,Ia 0KA,Ib 18.81KA,Ic 0KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 05:34 Hrs Tried held Ok and tripped at 05:45 HRS 6) Any other relevant information: - Regards, Delhi SLDC 20221220090513 2022/12/20 09:05:13 1) Name of the substation and Time: At 04:08 HRS and 05:08 HRS 220KV TUGB 2) Name of element tripped/restored: 220MLI-II at 04:08 HRS and 220KV Okhla-I at 05:08 HRS tripped 3) Relay Annunciation: relay MLI-II Zone-I and II y,B Ph F/L 6.4KM If 18.585KA Relay 220KV Okhla ckt-I R ph,zone-I,F/L 0.5KM,Ir 29.043KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 05:28 HRS 220KV Vasant kunj ckt-II energised and load of Mehrauli grid normalised 6) Any other relevant information: - Regards, Delhi SLDC 20221220085237 2022/12/20 08:52:38 1) Name of the substation and Time: At 05:13 HRS 220KV PPG 2) Name of element tripped/restored: 33KV I/C-I,220KV Busbar,220KV Geeta colony I and II,IP -I and II Tripped 3) Relay Annunciation: Relay I/C-Relay y,B ph O/c Relay Busbar Zone-II 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 05:44 Hrs at 220KV Pragati 220KV Buscoupler closed,geeta colony i and II ,IP-I charged 6) Any other relevant information: Load effected approx 28MW Regards, Delhi SLDC 20221220083436 2022/12/20 08:34:37 1) Name of the substation and Time: At 05:10 HRS 220KV SVR 2) Name of element tripped/restored: 220KV Pragati ckt tripped 3) Relay Annunciation: Zone-I,Y-ph,Distance 5.06KM,Ia146.5A,Ib7.092KA,Ic1.145KA Relay Pragati zone-I,F/L 7.0948KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC 20221220081358 2022/12/20 08:13:59 1) Name of the substation and Time: At 08:08 hrs 220 KV I.P.S/stn 2) Name of element tripped/restored: 220 KV Patparganj ckt-II Charged at 08:08 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20221220063049 2022/12/20 06:30:50 1) Name of the substation and Time: At 05:27 HRS 220KV Gopalpur 2) Name of element tripped/restored: 220KV Mandola -I tripped 3) Relay Annunciation: Zone-I,B phase trip,R,Y,B phase F/L 3.168mm,Ia1.115KA,Ib 1.374KA,Ic1.302KA,In 3.787KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 05:30 HRS 220KV Buscoupler closed LOad normalised 6) Any other relevant information: approx load affected 48 MW Regards, Delhi SLDC 20221220043111 2022/12/20 04:31:11 1) Name of the substation and Time: 220kV Gopal Pur, at 04:05 Hrs 2) Name of element tripped/restored: 220kV Mandola Ckt-I 3) Relay Annunciation: Y-Ph trip,Ia-1.5KA,Ib-1.45KA,Ic-1.31KA, In -4.217KA, Distance-09M, 4) Details of physically damaged equipment: _ 5) Immediate corrective/system normalization steps performed: 220kV Bus-coupler put on at 4:08 Hrs, 6) Any other relevant information: Approx. load effected- 44 MW, and system is normalized at 4:08 Hrs, Regards, Delhi SLDC 20221220035625 2022/12/20 03:56:26 1) Name of the substation and Time: At 03:19 HRS 400KV Bamnauli 2) Name of element tripped/restored: 220KV PPK-II ckt-I tripped 3) Relay Annunciation: Realay Bamnauli Y-phase zone -I,2.885KM,If 14.93KA Realy PPK-II D/P-II,Y-phase,MI operated,Distance inter trip,Bn zone-I,3.8KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load effected Regards, Delhi SLDC 20221220035151 2022/12/20 03:51:51 1) Name of the substation and Time: At 03;10 HRS 400KV Bamnauli 2) Name of element tripped/restored: 220 PPK-I ckt-I tripped at 03:10 HRS 220KV PPK-I ckt-II tripped at 03:13 HRS 3) Relay Annunciation: PPK-I Ckt-IY-PHASE ,ZONE-II,6.959km,If 12.97ka 220KV PPK-I ckt-II Trip B ph,zone-I,6.424 KM,If 12.7KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No loas affected Regards, Delhi SLDC 20221220034625 2022/12/20 03:46:26 1) Name of the substation and Time: At 02:32 HRS 400KV Munka 2) Name of element tripped/restored: 400KV Jhajjar-II tripped 3) Relay Annunciation: Relay Zone-I,D/P Y-phase both end tripping 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20221220034120 2022/12/20 03:41:20 1) Name of the substation and Time: At 03:22 HRS 400KV Dwarka 2) Name of element tripped/restored: 220KV Naraiana ckt-II tripped 3) Relay Annunciation: Relay Dwaeka Distance zone-I F/L 1.5KM,Fault stage -A,If 23052.482A Naraiana Autoreclosw R-Phase trip,D/P 5KM,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load effected Regards, Delhi SLDC 20221220012141 2022/12/20 01:21:41 1) Name of the substation and Time: At 00.28 HRS 220KV Narela 2) Name of element tripped/restored: 220KV Panipat-I,Panipat-II and Panipat-III Tripped 3) Relay Annunciation: Relay Panipat -I A,B,C pHASE,.ZONE-II,F/D-496.7 msec,F/L-98.98KM Ia 50.98Amp,Ib 20.10A,Ic 54.46A,86 Relay Panipat -II A,B,C pHASE,F/D-528.4msec,F/L-66.64KM Ia 313.4Amp,Ib 338.8A,Ic 362.9A,86 Relay Panipat -III A,B,C SOTF,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 00:53 HRS 220KV Buscoupler made ON and load taken of BBMB Rohtak road I and II and BBMB Tranformer taken from 220KV Mandola ckt-I and II 6) Any other relevant information: Load affected approx 63MW Regards, Delhi SLDC 20221219195815 2022/12/19 19:58:16 1) Name of the substation and Time: AT 18:12 HRS 400KV Mundka 2) Name of element tripped/restored: 40KV Jhajjar-II charged at 18:12 HRS 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20221219195639 2022/12/19 19:56:40 1) Name of the substation and Time: At 18:50 HRS 220 KV Kanjhawala 2) Name of element tripped/restored: 220KV Mundka ckt Charged at 18:50 HRS 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20221219170311 2022/12/19 17:03:12 1) Name of the substation and Time: 220KV NARELA @16.47 2) Name of element tripped/restored: 220KV DSIDC BAWANA CKT-2 RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20221219170043 2022/12/19 17:00:44 1) Name of the substation and Time: 400KV BAWANA @16.49 2) Name of element tripped/restored: 220KV SMB -CKT-1 RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20221219165419 2022/12/19 16:54:20 1) Name of the substation and Time: 400 kv BAWANA @ 15.30 2) Name of element tripped/restored: 315 ICT -5 RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20221219164451 2022/12/19 16:44:52 1) Name of the substation and Time: 220kv rohini @16:41 2) Name of element tripped/restored: 220kv smb -2 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221219151633 2022/12/19 15:16:34 1) Name of the substation and Time: 400kb bml @15.14 2) Name of element tripped/restored: 220kv ppk-1 ckt-2 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221219131936 2022/12/19 13:19:36 1) Name of the substation and Time: 220KV SMB @13.16 2) Name of element tripped/restored: 220KV SGTN CKT-1 RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20221219124503 2022/12/19 12:45:03 1) Name of the substation and Time: 220KV SOW @12.40 2) Name of element tripped/restored: 220KV MANDOLA CKT 2 RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20221219123150 2022/12/19 12:31:51 1) Name of the substation and Time: 220 kv DSIDC BAWANA @12.28 2) Name of element tripped/restored: 220KV BAWAN CKT-2 RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20221219121730 2022/12/19 12:17:31 1) Name of the substation and Time: 220kv gopal pur @12.12 2) Name of element tripped/restored: 220kv mandola ckt-1 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221219115015 2022/12/19 11:50:16 1) Name of the substation and Time: 400kv bawana @11.40 2) Name of element tripped/restored: 220kv knj ckt 1 and 2 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221219113014 2022/12/19 11:30:15 1) Name of the substation and Time: 220KV Mehrauli, 11:22Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-II restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20221219110653 2022/12/19 11:06:54 1) Name of the substation and Time: 220kV Shalimarbagh 11:03Hrs 2) Name of element tripped/restored: Wazirpur ckt-2 restored 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20221219110400 2022/12/19 11:04:01 1) Name of the substation and Time: 220kV SOW 10:29Hrs 2) Name of element tripped/restored: Kashmiri gate ckt 1 charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20221219110047 2022/12/19 11:00:48 1) Name of the substation and Time: 220kV Salimarbagh Rohini ckt-1 10:35Hrs 2) Name of element tripped/restored: 220kV Rihini ckt1 restored 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20221219074645 2022/12/19 07:46:46 1) Name of the substation and Time: At 4;44 Hrs. 400 KV Bamnauli 2) Name of element tripped/restored: 220KV PPK-1 Ckt-2 3) Relay Annunciation: R-Phase Z-1 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: CKT was on NO Load 6) Any other relevant information: na Regards, Delhi SLDC 20221219074104 2022/12/19 07:41:05 1) Name of the substation and Time: At 5:08 220KV Kanjhawala 2) Name of element tripped/restored: 220KV Mundka Ckt 1 n 2 3) Relay Annunciation: Z-1 Dist.Prot. Y-Phase 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Load taken on 220KV Najafgarh 6) Any other relevant information: load normalized Regards, Delhi SLDC 20221219073513 2022/12/19 07:35:14 1) Name of the substation and Time: At 04:03 220KV Tuglakabad 2) Name of element tripped/restored: 220 KV Mehrauli Ckt-2 3) Relay Annunciation: R-Phase Dist.Prot 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: 220 kv B/C made on 6) Any other relevant information: na Regards, Delhi SLDC 20221219020719 2022/12/19 02:07:20 1) Name of the substation and Time: AT 220KV WAZIRABAD(01:07HRS) 2) Name of element tripped/restored: 220KV KASHMERE GATE-1 3) Relay Annunciation: Y PHASE, D/P , ZONE-1, 1.157KM 4) Details of physically damaged equipment: NONE. 5) Immediate corrective/system normalization steps performed: 220KV B/C PUT ON AT KASHMERE GATE. 6) Any other relevant information: NO TRIPPING FROM KASHMERE GATE. Regards, Delhi SLDC 20221219020424 2022/12/19 02:04:25 1) Name of the substation and Time: AT NARELA(00:55HRS) 2) Name of element tripped/restored: 220KV DSIIDC CKT-II 3) Relay Annunciation: C PHASE, D/P, ZONE-1 4) Details of physically damaged equipment: NONE. 5) Immediate corrective/system normalization steps performed: NO LOAD AFFECTED 6) Any other relevant information: LINE WAS CHARGED ON NO LOAD. Regards, Delhi SLDC 20221219020120 2022/12/19 02:01:21 1) Name of the substation and Time: AT 220kv GOPALPUR(00:52HRS) 2) Name of element tripped/restored: 220KV MANDOLA-1 3) Relay Annunciation: Y PHASE, ZONE-1 4) Details of physically damaged equipment: NONE. 5) Immediate corrective/system normalization steps performed: 220KV B/C PUT ON AT GOPALPUR, LOAD NORMALIZED. 6) Any other relevant information: NONE. Regards, Delhi SLDC 20221219005738 2022/12/19 00:57:38 1) Name of the substation and Time: AT ROHINI-1(00:53HRS) 2) Name of element tripped/restored: 220KV BAWANA-II 3) Relay Annunciation: R PHASE, D/P. 4) Details of physically damaged equipment: NONE. 5) Immediate corrective/system normalization steps performed: 220KV B/C PUT ON. 6) Any other relevant information: NONE. Regards, Delhi SLDC 20221219004559 2022/12/19 00:46:00 1) Name of the substation and Time: AT ROHINI-1(23:48HRS) 2) Name of element tripped/restored: 220KV BAWANA-II 3) Relay Annunciation: R PHASE, D/P, 8.609KM 4) Details of physically damaged equipment: NONE. 5) Immediate corrective/system normalization steps performed: 220KV B/C PUT ON AT ROHINI-1. 6) Any other relevant information: NONE. Regards, Delhi SLDC 20221219004047 2022/12/19 00:40:48 1) Name of the substation and Time: AT KASHMERE GATE(00:23HRS) 2) Name of element tripped/restored: 220KV WAZIRABAD-1 3) Relay Annunciation: B PHASE TRIP, ZONE-1 4) Details of physically damaged equipment: NONE 5) Immediate corrective/system normalization steps performed: 220KV B/C PUT ON. 6) Any other relevant information: NONE. Regards, Delhi SLDC 20221219003322 2022/12/19 00:33:24 1) Name of the substation and Time: AT KASHMERE GATE(00:23HRS) 2) Name of element tripped/restored: 220KV WAZIRABAD-1 3) Relay Annunciation: B PHASE TRIP, ZONE-1 4) Details of physically damaged equipment: NONE 5) Immediate corrective/system normalization steps performed: 220KV B/C PUT ON. 6) Any other relevant information: NONE. Regards, Delhi SLDC 20221219002942 2022/12/19 00:29:43 1) Name of the substation and Time: 220 KV Kashmirigate(23:52 HRS) 2) Name of element tripped/restored: 220 KV WAZIRABAD CKT-1 3) Relay Annunciation: B PHASE TRIP, ZONE-1 4) Details of physically damaged equipment: NONE 5) Immediate corrective/system normalization steps performed: 220KV B/C PUT ON AND LOAD NORMALIZED. 6) Any other relevant information: NONE. Regards, Delhi SLDC 20221215091320 2022/12/15 09:13:21 1) Name of the substation and Time: at 220kv Paretstreet and Pragati 2) Name of element tripped/restored: All System normal at Parkstreet and Pragati. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221215083527 2022/12/15 08:35:28 1) Name of the substation and Time: 220kV Pragati and Parkstreet 2) Name of element tripped/restored: @07:52Hrs, Monkey fall on 33kV Incomer-2 at Parkstreet and this Incomer-2 tripped. Due to This 220kV Pragati- Parkstree -1 Tripped at Pragati end but not tripped at Parkstreet end. Also 220kv side of 100mVA Transformers not tripped of at Parkstreet end. @8:15Hrs, 220kV Bus-1 charged through 220kv Bus Coupler and 33kV Bus-1 normalised as relay of 220kv Pragati-Parkstreet stuck/not reset. 3) Relay Annunciation: At Pragati- O/C, R-phase, Any Trip, Line differential RYB phase. 4) Details of physically damaged equipment: 33KV I/C-II AT PARKSTREET. 5) Immediate corrective/system normalization steps performed: SUPPLY TAKEN THROUGH 220KV BUS COUPLER AT PKS. 6) Any other relevant information: NA Regards, Delhi SLDC 20221215070632 2022/12/15 07:06:33 1) Name of the substation and Time: 220kv Naraina 2) Name of element tripped/restored: @06:52 Hrs. 220kv Dwaraka-1 tripped on Distance Protection. No load affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221208195323 2022/12/08 19:53:23 1) Name of the substation and Time: At 220kV GIS Dev Nagar, (19:08- 19:40) Hrs. 2) Name of element tripped/restored: 1) 220kV Bus-Bar I enrgized through 220kV Park Street( Bay-209) and 220kV Bus -bar-II energized through 220kV Bus-coupler(Bay--207) at 19:08 Hrs. 2)220kV/33kV, 100 MVA Tx-4(Bay- 210) energized at 19:21 Hrs 3)220kV/33kV, 100 MVA Tx-3(Bay-201) energized at 19:40 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20221208001241 2022/12/08 00:12:43 1) Name of the substation and Time: 220kv Parkstreet @00.01 hrs 2) Name of element tripped/restored: 220kv dev nagar 3) Relay Annunciation: auto reclose trip 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221207185652 2022/12/07 18:56:53 1) Name of the substation and Time: 220kv DEV Nagar @18.46 2) Name of element tripped/restored: 220kv parkstreet cb closed and 220 kv bus1 and b/c and bus 2 charged 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221207081622 2022/12/07 08:16:23 1) Name of the substation and Time: Park Street, .I.P, HCML 2) Name of element tripped/restored: Please provide uninterrupted power supply during the Parliament Session starts w.e.f. 07.12.2022 to 29.12.2022 on Park Street-Nirman Bhawan, Park Street-Baired Lane, I.P.Bay 2-Nirman Bhawan,I.P.Bay 4-Elect. Lane, HCML-Raisena Road, 3) Relay Annunciation: N.A. 4) Details of physically damaged equipment: N.A. 5) Immediate corrective/system normalization steps performed: N.A. 6) Any other relevant information: NDMC DISCOM AREA Regards, Delhi SLDC 20221207080220 2022/12/07 08:02:20 1) Name of the substation and Time: ALL BYPL AREA SUBSTATIONS 2) Name of element tripped/restored: Avoid any interruption in BYPL area for smooth counting at counting centers of MCD pole On 07/12/2022. Please ensure uninterrupted power supply. 3) Relay Annunciation: N.A. 4) Details of physically damaged equipment: N.A. 5) Immediate corrective/system normalization steps performed: N.A. 6) Any other relevant information: N.A. Regards, Delhi SLDC 20221206220105 2022/12/06 22:01:06 1) Name of the substation and Time: 220KV PARKSTREET 2) Name of element tripped/restored: NEWLY COMMISSIONED PARKSTREET- DEVNAGAR 220KV FEEDER CHARGED @20:58 HRS ON NO LOAD. 3) Relay Annunciation: N.A. 4) Details of physically damaged equipment: N.A. 5) Immediate corrective/system normalization steps performed: N.A. 6) Any other relevant information: N.A. Regards, Delhi SLDC 20221206144259 2022/12/06 14:42:59 1) Name of the substation and Time: 220kv Subzi mandi @14.02 2) Name of element tripped/restored: 220kv Gopalpur-2 CVT disaapered along with 33 kv BGroad ckt-1 and 2 3) Relay Annunciation: no indication 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 31 MW LOAD EFFECTED @ 14.20 33 KV BUSSECTION MADE ON SUUPLY RESTORED 6) Any other relevant information: AT 220KV GOPLAPUR -SUBZIMANDI CKT-2 TRIPED WITHOUT INDICATION Regards, Delhi SLDC 20221202132133 2022/12/02 13:21:34 1) Name of the substation and Time: 220KV SHALIMERBAGH @12.58 2) Name of element tripped/restored: 33 KV I/C -3 3) Relay Annunciation: no indication 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: bus coupler made on 13.10 hrs load restrored 6) Any other relevant information: load effected 40 mw Regards, Delhi SLDC 20221202131904 2022/12/02 13:19:05 1) Name of the substation and Time: 220kV DSIDC BAWANA @ 12.59 2) Name of element tripped/restored: 220KV BAWANA CKT-1 3) Relay Annunciation: Z2 OPTD ,RYB PH, 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: B/C MADE ON LOAD RESTORED @ 13.02 6) Any other relevant information: LOAD EFFECTED 87 MW Regards, Delhi SLDC 20221129114746 2022/11/29 11:47:47 1) Name of the substation and Time: aT 11:15 hRS,220Kv SMB 2) Name of element tripped/restored: 33kV I/C-III with 33kV Bus-II 3) Relay Annunciation: O/C- B Phase, 86 4) Details of physically damaged equipment: B-Ph, Bus PT blast, Y-Ph Bus PT damaged 5) Immediate corrective/system normalization steps performed: Load has been shifted to grid by TPDDL 6) Any other relevant information: Approx. load effected 28 MW Regards, Delhi SLDC 20221127113514 2022/11/27 11:35:15 1) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 11:09Hrs 160MVA T/F-1 tripped on differential YB-phase. Load affected was 27MW. At 11:15Hrs 66KV B/C closed and load normalised. At 11:30Hrs 160MVA T/F-1 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221127102007 2022/11/27 10:20:08 1) Name of the substation and Time: 220KV Tughlakabad 2) Name of element tripped/restored: 220KV R. K. Puram-II 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: 220KV R. K. Puram-II put off at 22:14Hrs. on 26.11.2022 due to high voltage and tried to charge on today, 27.11.2022 till morning, but its CB could not be hold. Informed to AM(T) Maintenance, Tughlakabad Regards, Delhi SLDC 20221127085104 2022/11/27 08:51:05 1) Name of the substation and Time: 220kV Parkstreet, 8:20Hrs 2) Name of element tripped/restored: Discom Feeders normalized 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Discoms requested to normalize the load diverted at thier end due to DC problem at Parkstreet 6) Any other relevant information: Discom normalized the load, no load affected during this period. Regards, Delhi SLDC 20221127074141 2022/11/27 07:41:41 1) Name of the substation and Time: 220KV Park Street, 05:11Hrs. 2) Name of element tripped/restored: DC leakage restored 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Dioscm informed to normalize the load.No load affected, Didcom still normalizing the load diverted at their end. Regards, Delhi SLDC 20221127034309 2022/11/27 03:43:10 1) Name of the substation and Time: 220KV Park Street, 02:40Hrs. 2) Name of element tripped/restored: Load of 66KV and 33KV Feeders shifted/isolated due to DC problem 3) Relay Annunciation: DC fail, Trip Circuit faulty at 66KV and 33KV level 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: DISCOM load shifted 6) Any other relevant information: Informed to concerned AGM SO and DGM O and M Regards, Delhi SLDC 20221127000455 2022/11/27 00:04:56 1) Name of the substation and Time: 220KV Sabji Mandi Substation charged at 23:54Hrs. 2) Name of element tripped/restored: 220KV Gopal Pur-I and II, 100MVA-I and II, 33KV I/C-I and II, 16MVA-I and II along with 11KV I/C-I and II charged. 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: 220KV Substation Subji Mandi was completely swithched off on 26.11.2022 at 09:45Hrs along with 220KV, 33KV, 11KV and Power Transformers for overhauling of 220KV and 33KV GIS System but same was return due to shortage of material. Regards, Delhi SLDC 20221124123131 2022/11/24 12:31:32 1) Name of the substation and Time: 220kV Parkstreet at 10:55Hrs 2) Name of element tripped/restored: 220kV Parkrtreet- Pragati ckt 1, 100MVA Tr No 4 220/33kV Incomer along with 33kV Shankar road 2 tripped due to monkey at 33kV Shankar road 2 bus isolator. 3) Relay Annunciation: Any trip e/f stage 1 86 at 220kV pragati ckt1, 33kV Incomer No2 (100MVA Tr-4) any trip over current stage 1 overcurrent B-Ph and earth fault stage 1 (86). 4) Details of physically damaged equipment: 33kV Shankar road-2 Bus -II isolator flash. 5) Immediate corrective/system normalization steps performed: Load diverted and instructed S/stn staff to check and give clearance. 6) Any other relevant information: Load affected 50MW from 10:55Hrs to 11:25Hrs. Regards, Delhi SLDC 20221123190157 2022/11/23 19:01:58 1) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 17:56Hrs 33kV I/C-III and 33KV I/C-IV tripped on O/C R and Y phase with the tripping of 33KV Alaknanda ckt-I and ckt-II. Grid staff has reported electrocution of monkey. Load affected was 25MW. At 18:40Hrs 33KV I/C III and 33KV I/C-IV charged and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221122195016 2022/11/22 19:50:17 1) Name of the substation and Time: 220kV Park Street, 18:43 Hrs 2) Name of element tripped/restored: 33kV I/C-II 3) Relay Annunciation: Any trip, O/C St1,O/C-R-Ph, 86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: load shifted by BSES and Normalized the system at 19:25 Hrs. 6) Any other relevant information: Approx. load effected 14 MW Regards, Delhi SLDC 20221119160707 2022/11/19 16:07:08 1) Name of the substation and Time: 400kv HARSH VIHAR 2) Name of element tripped/restored: 14:16 HRS 66KV BUSBAR RELAY OPERATED LOAD AFFECTED : 63MW At 14:39 Hrs Load Normalized 3) Relay Annunciation: n.a. 4) Details of physically damaged equipment: n.a. 5) Immediate corrective/system normalization steps performed: n.a. 6) Any other relevant information: n.a. Regards, Delhi SLDC 20221118141418 2022/11/18 14:14:20 1) Name of the substation and Time: Dial 2) Name of element tripped/restored: At 13:57Hrs 220KV Bamnauli-Dial ckt-II tripped at Bamnauli end on Z-2 AB-phase 11.9Km fault current 11.3KA. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221118090111 2022/11/18 09:01:12 1) Name of the substation and Time: 220kV Narela, 08:50 Hrs 2) Name of element tripped/restored: 20 MVA Tx. I with 11 kV I/C-I 3) Relay Annunciation: Buchholz and 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 08:54Hes ,System is normalized bu using 11 kV Bus section 6) Any other relevant information: Approx. load effected 3 MW Regards, Delhi SLDC 20221117182110 2022/11/17 18:21:12 1) Name of the substation and Time: 220kV Meherauli, 14:41 Hrs 2) Name of element tripped/restored: 100 MVA Tx I,II and III 3) Relay Annunciation: At 100 MVA Tx I-86, At 100 MVA Tx II-86 and At 100 MVA Tx III-E/F and 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: System is normalized at 14:50 Hrs 6) Any other relevant information: Approx. load effected -130 MW Regards, Delhi SLDC 20221113142043 2022/11/13 14:20:44 1) Name of the substation and Time: 220kV IP, 12:52 hrs 2) Name of element tripped/restored: 100 MVA-III with 33kV I/C-III and 33kV I/C-II due to monkey elecrocuted on 33kV Bus- bar 3) Relay Annunciation: On 100 MVA-III- REF, 86, On 33kV -I/C-III- O/C-R ph, On 33kV I/C-II- O/C B- Ph and O/C St-I 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 13:12 Hrs system is normalized by closing 33kV I/C-II 6) Any other relevant information: Approx. load effected 56 MW Regards, Delhi SLDC 20221112081626 2022/11/12 08:16:28 1) Name of the substation and Time: At 03:03 hrs: 220kV Rohini-II 2) Name of element tripped/restored: both 220KV ckts of BAWANA tripped at both ends 3) Relay Annunciation: At 400 KV Bawana end- E/F and 186 AB At 220KV Rohini-II: Details N/A 4) Details of physically damaged equipment: 160 MVA-I oil leakage and fire observed in control Cables and Battery bank 5) Immediate corrective/system normalization steps performed: 220kV B/C made ON and Load Shifted by Discoms 6) Any other relevant information: At same time 315MVA ICT-II tripped and restored at 7:02 hrs at 400kV Bawana Regards, Delhi SLDC 20221112074411 2022/11/12 07:44:12 1) Name of the substation and Time: At 03:03 Hrs. 400KV Bawana Sub.Stn. 2) Name of element tripped/restored: 315 MVA ICT#2 tripped 3) Relay Annunciation: O/C,R-Phase 4) Details of physically damaged equipment: At 220 KV Rohini-II Sub.Stn. fire observed in control cables and battery bank 5) Immediate corrective/system normalization steps performed: Load shifted by DISCOM 6) Any other relevant information: 315 MVA ICT#2 normalize at 07:02 hrs at 400 KV Bawana Regards, Delhi SLDC 20221106172631 2022/11/06 17:26:32 1) Name of the substation and Time: At 16:42 HRS 220KV BTPS 2) Name of element tripped/restored: 220KV OKHALA CKT-I 3) Relay Annunciation: At OKHLA,tripped,Zone-I BTPS Gen TRip ZOne-IR-Ph,Fault Distance 0.2KM 4) Details of physically damaged equipment: R-Phase 220KV LA damage 5) Immediate corrective/system normalization steps performed: No Load affected 6) Any other relevant information: - Regards, Delhi SLDC 20221105162232 2022/11/05 16:22:33 1) Name of the substation and Time: 220 M/ Moth , 16:15 2) Name of element tripped/restored: 100 MVA Tx. -II with 33 kv I/C-II 3) Relay Annunciation: PRV and master relay 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 16:16 Hrs , system is normalized 6) Any other relevant information: Approx. load effected 39 MW Regards, Delhi SLDC 20221104113040 2022/11/04 11:30:40 1) Name of the substation and Time: 220kV Lodhi Rd., 09:13 2) Name of element tripped/restored: 16 MVA Tx. -IV with 11kV I/c-IV due to Monkey electrocuted on HV side bushing, 100MVA Tx-II with 33kV I/C-II tripped due DC supply failed 3) Relay Annunciation: On 16 MVA-Master relay, On 100 MVA Tx-II-Master relay I and II . 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: At 10:10Hrs, system is normal and 16 MVA tx. under B/D already 6) Any other relevant information: Approx. 26 MW load effected Regards, Delhi SLDC 20221104091823 2022/11/04 09:18:23 1) Name of the substation and Time: At 220KV Sarita Vihar(23:54) 03.11.22 2) Name of element tripped/restored: 220KV Pragati ckt 3) Relay Annunciation: B phase trip(RYB) 5.15KA fault current .distance protection 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: no load affected. 6) Any other relevant information: both end tripping. Regards, Delhi SLDC 20221102084058 2022/11/02 08:40:59 1) Name of the substation and Time: 220kV Pragati, 08:18 2) Name of element tripped/restored: 220kV Pragati-Sarita Vihar 3) Relay Annunciation: At Pragati:- Trip Phase AN , Distance Zone-2, Fault located-11.70KM, Ia--8.09kA, Ib-120.1A, Ic-132.0A, In-8.338KA. At Sarita Vihar:- Zone-1,Dist. 2.712kM, Fault current IA-8.345Ka, Ib-116.2A,Ic-131.3A,In-8.102KA, R-Phase Trip 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20221031104154 2022/10/31 10:41:55 1) Name of the substation and Time: 220KV Dwarka, 09:57Hrs. 2) Name of element tripped/restored: 220KV Naraina-I 3) Relay Annunciation: Zone-1, R-Phase, Fault Location - 1.60Km, Fault Current, R-Phase - 22.078KA and In - 21.441KA. 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20221024151511 2022/10/24 15:15:12 1) Name of the substation and Time: 400 kv bawana @13.05 2) Name of element tripped/restored: 220kv i/c -5,220kv bus section,220 kv DSIDC BAWANA CKT-1 3) Relay Annunciation: LBB BB TRIP 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20221022074821 2022/10/22 07:48:22 1) Name of the substation and Time: 220kV Park street, at 06.32 Hrs 2) Name of element tripped/restored: 33kV I/C-II due to monkey Electrocuted 3) Relay Annunciation: E/F, FT-1,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: at 06.50 Hrs, system is normalized 6) Any other relevant information: Load effected approx. 60 MA Regards, Delhi SLDC 20221022002407 2022/10/22 00:24:08 1) Name of the substation and Time: 220kV Park street, At 23:37 Hrs 2) Name of element tripped/restored: 100 MVA Tx-I with 33kV I/C-I and 33kV I/C-II (Monkey electrocuted) 3) Relay Annunciation: 30A-Bucholz trip,O/C,86 at 100 MVA Tx. with intertrip and St-1, O/C-R-Ph at 33kV I/C-II 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 23:55 Hrs 33kV -I/C-II and B/C put on and system is normalized 6) Any other relevant information: Approx.Load effected 58 MW Regards, Delhi SLDC 20221018134715 2022/10/18 13:47:16 1) Name of the substation and Time: Sabzi Mandi 2) Name of element tripped/restored: At 13:44Hrs 220KV Gopalpur-Sabzi Mandi ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221018121616 2022/10/18 12:16:17 1) Name of the substation and Time: Sabzi Mandi 2) Name of element tripped/restored: At 11:53Hrs supply failed of 220KV Gopalpur ckt-II. Relay at Gopalpur end are YB-phase Z-1 3.1km Iy=Ib=7KA. Load affected was 50MW of Sabzi Mandi. Load normalised through 33KV B/C. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221016135351 2022/10/16 13:53:52 1) Name of the substation and Time: 400 KV BML@ 10.30 2) Name of element tripped/restored: 220KV PPK-3- CKT-2 3) Relay Annunciation: Z1 OPTD 186 A B 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: CKT IS ON NO LOAD Regards, Delhi SLDC 20221016135205 2022/10/16 13:52:05 1) Name of the substation and Time: 220kv BTPS @1250 2) Name of element tripped/restored: 220KV TUGLAKABAD 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: 220kv BTPS-TUGLAKABAD ckt-1 restored Regards, Delhi SLDC 20221012125000 2022/10/12 12:50:01 1) Name of the substation and Time: At 11:48HRS 220 KV Patparganj 2) Name of element tripped/restored: 220 KV Geeta Colony Ckt-1 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: normal 6) Any other relevant information: - Regards, Delhi SLDC 20221011210133 2022/10/11 21:01:33 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 20:39Hrs 220KV Geeta Colony ckt-I tripped without indication. CVT coming at Patparganj end. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221011181604 2022/10/11 18:16:05 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 17:25Hrs 220KV Geeta Colony ckt-I tripped on 86 and 220KV Geeta Colony ckt-II tripped on 86 RYB-phase distance relay. Load affected was approx. 200MW (IP,Rajghat and 66KV Park Street). At 17:30Hrs 220KV Geeta Colony ckt-II charged and load normalised and at 17:34Hrs 220KV Geeta Colony ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221011151638 2022/10/11 15:16:39 1) Name of the substation and Time: 400 kV Bawana, 14:25 hrs 2) Name of element tripped/restored: 220kV Salimar Bagh Ckt-I 3) Relay Annunciation: At 400kV Bawana:- Distance protection with 86 relay 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: At 14:26 Hrs, System is normalized by CB closing at 220kV Bawana Ckt-1 6) Any other relevant information: Supply failed :-220kV Salimarbagh Ckt-1 and 2 at 220kV SGTN end and 220kV Salimarbagh Ckt-1 at220kV Wazirpur end. Load effected approx. 145 MW only one minut(14:25 to 14;26) Regards, Delhi SLDC 20221011091850 2022/10/11 09:18:52 1) Name of the substation and Time: At Mehrauli:(08:58hrs) 2) Name of element tripped/restored: 100MVA-II 3) Relay Annunciation: OLTC and OSR 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: load taken on other transformer. 6) Any other relevant information: no load taken. Regards, Delhi SLDC 20221011090300 2022/10/11 09:03:01 1) Name of the substation and Time: At Mehrauli: 05:40hrs 2) Name of element tripped/restored: 100MVA-I and 100MVA-II. 3) Relay Annunciation: transformer-I tripped on trip ckt faulty. and Transformer-II tripped on OLTC and OSR. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: load taken on other transformers. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20221011085805 2022/10/11 08:58:06 1) Name of the substation and Time: At Gazipur:03:54hrs 2) Name of element tripped/restored: 160MVA-I along with 66KV I/C-I 3) Relay Annunciation: overflux 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: load met by other transformer. 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20221010092011 2022/10/10 09:20:12 1) Name of the substation and Time: 220KV Gazipur, 08:40Hrs. 2) Name of element tripped/restored: 100MVA-II along with 66KV I/C-II and 25MVA-I along with 11KV I/C-I 3) Relay Annunciation: Bucchholz Relay on 100MVA-II and Differential Y and B Phase, REF VL, HFI on 25MVA-I 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20221008152249 2022/10/08 15:22:50 1) Name of the substation and Time: 220KV Gazipur, 15:15Hrs. 2) Name of element tripped/restored: 160MVA-III along with 66KV I/C-III with 66KV Bus-Coupler 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: Restored 160MVA-III along with 66KV I/C-III with 66KV Bus-Coupler Regards, Delhi SLDC 20221008151349 2022/10/08 15:13:49 1) Name of the substation and Time: 220KV Gazipur, 13:54Hrs. 2) Name of element tripped/restored: 160MVA-III along with 66KV I/C-III with 66KV Bus-Coupler 3) Relay Annunciation: O/C and RYB Phase on 160MVA-III and O/C Stage 1, O/C Y-Phase, O/C B-Phase and 80AC1 on 66KV Bus-Coupler 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20221007155513 2022/10/07 15:55:13 1) Name of the substation and Time: 220KV South of Wazirabad, 14:13Hrs. 2) Name of element tripped/restored: 220KV Mandaula-I 3) Relay Annunciation: R-Phase Trip, Y-Phase Trip, Distance Trip, Zone-I, AR Lockout, 86, AB Trip, Fault Location - 3.791Km and Fault Current, R-Phase - 9.65KA and Y-Phase - 10.5KA 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20221007133712 2022/10/07 13:37:13 1) Name of the substation and Time: 220KV Okhla, 13:18Hrs. 2) Name of element tripped/restored: Restored all 220KV, 66KV, 33KV and 11KV Feeders (except 33KV Tughlakabad-I) 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20221007115459 2022/10/07 11:55:00 1) Name of the substation and Time: Corrigendum : 220kV Parkstreet 10:32Hrs to 10:46Hrs 2) Name of element tripped/restored: 220kV Pragati Ckt II 3) Relay Annunciation: DC Leakage 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Ckt charged at 10:46Hrs 6) Any other relevant information: Total 53 MW Load affected for 14Min, rest load shiftewd by discoms Regards, Delhi SLDC 20221007105847 2022/10/07 10:58:48 1) Name of the substation and Time: 220KV parkstreet, 10:32Min 2) Name of element tripped/restored: 220kV Pragati ckt II tripped, due to DC leakage 3) Relay Annunciation: 186A, 195CB, 295CA,80DC Supervision 1 and 2 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: clearance recieved from S/stn ckt charged at 10:46Hrs 6) Any other relevant information: Load shifted by Discom Regards, Delhi SLDC 20221007102711 2022/10/07 10:27:12 1) Name of the substation and Time: 220kV okhla 3:50Hrs 2) Name of element tripped/restored: 220KV BTPS ckt 1 and II, and 220kV TKD ckt II along with Complete 33kV and 66kV feeders are switched off due to DC leakage. 3) Relay Annunciation: DC leakage 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Concered Manager and DM(T) are informed to take corrective action 6) Any other relevant information: Nil Regards, Delhi SLDC 20221004144714 2022/10/04 14:47:14 1) Name of the substation and Time: 220kV Bawana, at 12:33hrs 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: system restored at 14:41 at 220kV KNJ Regards, Delhi SLDC 20221004135810 2022/10/04 13:58:10 1) Name of the substation and Time: 220kV Bawana, at 12:33hrs 2) Name of element tripped/restored: 220kV KNJ Ckt-II 3) Relay Annunciation: Distance protection operated , Zone-1,Dist.-10.42km, Ia-420A, Ib-970A,Ic-4.86kA, In-3.59KA, O/C 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 220kV KNJ is normalized through 220kV Mundka Ckt at 12:34 hrs 6) Any other relevant information: Load effected approx. 120MW for 1 minut only at KNJ end Regards, Delhi SLDC 20221003145915 2022/10/03 14:59:15 1) Name of the substation and Time: At 13:54 HRS 220KV Mehrauli 2) Name of element tripped/restored: 220KV TUGB-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV TUGB-II energized at 13:54 HRS System normal Regards, Delhi SLDC 20221003112920 2022/10/03 11:29:20 1) Name of the substation and Time: 220kV Meherauli , at 10:14 2) Name of element tripped/restored: 220kV TKD-MLI ckt-II, 3) Relay Annunciation: At TKD End:-A-Phase, fault current -20.64 KA, Zone-1, Distance -4.2kM At 220kV Mli end:- R-Ph, Line differential relay operated 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Laken taken on 220kV Vasant Kunj Ckt-2 6) Any other relevant information: NA Regards, Delhi SLDC 20221002170707 2022/10/02 17:07:08 1) Name of the substation and Time: 220KV OKHLA @ 16:32 2) Name of element tripped/restored: 160MVA TX -I TRIPPED DUE TO TRIPPING OF 66KV MALVIYA NAGAR-II. TRANSFORMER RESTORED @ 16:55 HRS. LOAD AFFECTED 49MW 3) Relay Annunciation: O/C, Y and B PHASE. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: FAULTY FEEDER NOT CHARGED. 6) Any other relevant information: TRANSFORMER TRIPPED WITH A OUTGOING FEEDER 66KV MALVIYA NAGAR -II Regards, Delhi SLDC 20221002163509 2022/10/02 16:35:10 1) Name of the substation and Time: 400KV BAMNAULI 2) Name of element tripped/restored: 400/220KV 500MVA ICT-III RESTORED @ 16:29 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20221002160141 2022/10/02 16:01:42 1) Name of the substation and Time: 220kv PPGJ 2) Name of element tripped/restored: 220KV GEETA COLONY-II TRIPPED @ 15:22HRS ON RELAY: R and Y PH. Z-1, 86, 883.7 MTR, RELAY AT G.COLONY END : 86ABC, 27A and B, 30E, ZONE-1, 3.510KM 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: CKT TRIPPED FROM BOTH END Regards, Delhi SLDC 20221002154442 2022/10/02 15:44:42 1) Name of the substation and Time: 220KV IP 2) Name of element tripped/restored: 220KV IP - PPGJ CKT 1 TRIPPED @ 186, R and Y PHASE, ZONE-1, DIST - 181.4 MTR. RELAY AT PPGJ - ZONE-1, R and Y PHASE, 550 MTRS, FAULT CURRENT - 12.58KA (R PH), 12.84KA (yPH) 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: DISCOME REQUETED TO REDUCE LOAD FROM IP AND RAJGHAT 6) Any other relevant information: CKT TRIPPED FROM BOTH END Regards, Delhi SLDC 20221002152749 2022/10/02 15:27:49 1) Name of the substation and Time: 220kv DIAL @ 15:13 2) Name of element tripped/restored: 220KV BAMNAULI - I RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20221002141910 2022/10/02 14:19:10 1) Name of the substation and Time: 220kv sarita vihar 2) Name of element tripped/restored: 220kv pragati - sarita vihar restored@14:07 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221002131558 2022/10/02 13:15:59 1) Name of the substation and Time: 220kV SARITA VIHAR @ 12:57 2) Name of element tripped/restored: 220KV PRAGATI CKT 3) Relay Annunciation: AT SARITA VIHAR END : B - PHASE ZONE-II, 15.02 KM, FAULT CURRENT - 3.558KA AT PRAGATI END : B - PHASE, ZONE-1, 1.459KM FAULT CURRENT - 17.52KA 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: N.A. 6) Any other relevant information: CKT TRIPPED AT BOTH END. Regards, Delhi SLDC 20221002125708 2022/10/02 12:57:09 1) Name of the substation and Time: 400KV BAMNAULI @ 12:09 2) Name of element tripped/restored: 400/220KV ICT-III 3) Relay Annunciation: 186A and B, 30B, PRV ,GRPA 86A1, GRP B 86B-1 4) Details of physically damaged equipment: N.A. 5) Immediate corrective/system normalization steps performed: LOAD CAME ON OTHER TRANFORMERS 6) Any other relevant information: TRANSFORMER TRIPPED WITH 220KV DIAL CKT -I Regards, Delhi SLDC 20221002125116 2022/10/02 12:51:17 1) Name of the substation and Time: 220kv DIAL @ 12:09 2) Name of element tripped/restored: 220KV BAMNAULI CKT -1 3) Relay Annunciation: TRIPPED ON R PH. TRIP, ZONE-II, GEN TRIP 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: LOAD TAKEN ON 220KV MEHRAULI 6) Any other relevant information: NO LOAD AFFECTED Regards, Delhi SLDC 20221001235929 2022/10/01 23:59:30 1) Name of the substation and Time: 220KV Sabji Mandi, 23:20Hrs. 2) Name of element tripped/restored: 100MVA-II 3) Relay Annunciation: 86, 186, Buchholz Relay operated 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC 20221001143948 2022/10/01 14:39:48 1) Name of the substation and Time: Vasant Kunj 2) Name of element tripped/restored: At 13:13Hrs supply fail of 220KV Mehrauli ckt-II. Relay at Mehrauli end- E/F. Load affected was 40MW. Load normalised through 220KV RK Puram ckt at 13:15Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20221001130321 2022/10/01 13:03:22 1) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: At 12:36Hrs 100MVA T/F-1 tripped on PRV Buchholz relay OTI WTI OSR SPR 86. Load affected was 39MW. Load normalised through 33KV B/C at 12:45Hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220927170946 2022/09/27 17:09:47 1) Name of the substation and Time: At Sarita Vihar(14:29hrs) 2) Name of element tripped/restored: 220KV Maharani Bagh ckt. 3) Relay Annunciation: zone-I , Rphase ,4.89KA, 2.915KM. 4) Details of physically damaged equipment: Awaited. 5) Immediate corrective/system normalization steps performed: 220KV Bus coupler put ON at Sarita Vihar. 6) Any other relevant information: No load was affected. Regards, Delhi SLDC 20220927132508 2022/09/27 13:25:08 1) Name of the substation and Time: At Tughlakabad(12:30hrs) 2) Name of element tripped/restored: 220KV Mehrauli ckt-II 3) Relay Annunciation: R and Y phase, 16.6KM, 11.22KA, zone-I. 4) Details of physically damaged equipment: Information awaited. 5) Immediate corrective/system normalization steps performed: BSES asked to C/O load on available sources. 6) Any other relevant information: Supply of 220KV Vasant Kunj also affected.Since all the three transformers at Vasant Kunj has tripped and are not closing due to breaker trouble. Regards, Delhi SLDC 20220923171618 2022/09/23 17:16:18 1) Name of the substation and Time: At 220KV PPK-III(16:28hrs) 2) Name of element tripped/restored: 160MVA-II 3) Relay Annunciation: 67N, ST-1 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 66KV bus coupler put ON. 6) Any other relevant information: Load normalized. Regards, Delhi SLDC 20220922173150 2022/09/22 17:31:51 1) Name of the substation and Time: 220KV Okhla, 11:04Hrs. 2) Name of element tripped/restored: 33KV I/C-III and IV 3) Relay Annunciation: O/C, 86 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: Load shifted by DISCOM (BRPL) and total load effected is 3.5MW due to faulty cable of DISCOM (BRPL). Regards, Delhi SLDC 20220918160342 2022/09/18 16:03:43 1) Name of the substation and Time: 220kV Geeta clny, At 15:25 hrs. 2) Name of element tripped/restored: 33kV I/C-II along with 33kV Kailash Ngr-1 and 2 3) Relay Annunciation: At 33kV I/C-II O/C and 86, at 33kV O/G fdr Kailash Ngr- 1 and 2 with O/C high set and E/F high set. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Load has been transfered by BYPL 6) Any other relevant information: At 15:44 Hrs- 33kV bus energized through I/C-II with O/G fdrs.Approx. load effected 50 MW Regards, Delhi SLDC 20220918090200 2022/09/18 09:02:00 1) Name of the substation and Time: Sabzi Mandi 2) Name of element tripped/restored: 100MVA T/F-2 charged at 07:20Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220918012520 2022/09/18 01:25:21 1) Name of the substation and Time: Sabzi Mandi 2) Name of element tripped/restored: At 23:35Hrs 100MVA T/F-2 tripped on 86. Load affected was 32MW. Load normalised through 33KV B/C at 23:45Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220917141154 2022/09/17 14:11:55 1) Name of the substation and Time: 400kV Bamnauli, at 13:18 2) Name of element tripped/restored: 220kV Dail ckt-II 3) Relay Annunciation: At bamnauli:- Zone-II,86 A and B,Dis-9.85kM, Fault current Ic-12.25kA. At 220kV Dail:- Zone-II tripped, B-Phase trip, fault current 797.0kA 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: 13:35 Hrs:- Load taken on 220kV Meherauli Ckt-II and 66kV B/C put off 6) Any other relevant information: Load effected-Nill Regards, Delhi SLDC 20220917002352 2022/09/17 00:23:53 1) Name of the substation and Time: At 20:03 Hrs.400 KV Bawana 2) Name of element tripped/restored: 315MVA ICT#4 Energised 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: After completion of work NRLDC issued charging code 6) Any other relevant information: 315 MVA #4 was in breakdown wef 08 Sep (20:00 Hrs) Regards, Delhi SLDC 20220915164723 2022/09/15 16:47:24 1) Name of the substation and Time: Najafgarh 2) Name of element tripped/restored: Supply fail of 220KV Bamnauli ckt-II at 16:30Hrs Relay at Bamnauli end are B-phase Z-1 5.37km fault current 14KA. Load affected was 84MW. At 16:34Hrs load normalised through 220KV B/C at Najafgarh. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220910163550 2022/09/10 16:35:50 1) Name of the substation and Time: At 15:47 HRS 220KV DSIIDC BAWANA 2) Name of element tripped/restored: 220KV Bawana-I 3) Relay Annunciation: AT DSIIDC Zone-I,Differential R-phase,Ia 921A,Ib408A,Ic 803A In2.096A At 400KV Zone -I,R,Y and B phase trip,Rn trip, Ia 25.19KA,Ib410A Ic 836A and In24.01A Distance 1.59KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At15:49 HRS 220KV Buscoupler closed system normalised 6) Any other relevant information: Approx 75MW load effected only for 2Minutes Regards, Delhi SLDC 20220909083917 2022/09/09 08:39:18 1) Name of the substation and Time: At Narela(00:05 hrs) 2) Name of element tripped/restored: 220KV Narela - DSIIDC ckt-II 3) Relay Annunciation: B and C phase, Zone-I, 9.002KA 4) Details of physically damaged equipment: Y phase conductor between Tower no. 224 and 225 snapped. 5) Immediate corrective/system normalization steps performed: 220KV B/C at DSIIDC put on and load normalized. 6) Any other relevant information: Supply of Narela failed at DSIIDC Bawana end. Regards, Delhi SLDC 20220908145313 2022/09/08 14:53:14 1) Name of the substation and Time: Bawana 2) Name of element tripped/restored: At 13:20Hrs 315MVA ICT-4 tripped on PRV, OTI WTI. Grid staff has reported fire in control cable which is under control now. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220906142436 2022/09/06 14:24:37 1) Name of the substation and Time: 220KV NARELLA 13.58 2) Name of element tripped/restored: 220KV MANDOLA CKT-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20220906142225 2022/09/06 14:22:25 1) Name of the substation and Time: 220kv narella 12.09 2) Name of element tripped/restored: 220kv mandola ckt-1 and 2 3) Relay Annunciation: 220kv mandola ckt-1 Z1 ,RPH,7.3037 KM 220KV MANDOLA CKT-2 86 AB ,OC,R PH 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20220906002612 2022/09/06 00:26:12 1) Name of the substation and Time: At23:23 HRS 400KV MUNDKA 2) Name of element tripped/restored: 160MVA-II Energised 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 160 MVA-II Energised Regards, Delhi SLDC 20220905213904 2022/09/05 21:39:05 1) Name of the substation and Time: At 19:18 Hrs.400 KV Mundka 2) Name of element tripped/restored: 315 MVA ICT#3,220 KV Peeragarhi Ckt-1 and 160MVA-2 3) Relay Annunciation: Buchholz,Distance Protection and w/o indication 4) Details of physically damaged equipment: R-Y-B Phase bushing of 400KV side and R-Y Phase bushing 220KV side of 315MVA ICT-3 5) Immediate corrective/system normalization steps performed: load of 220 kv wazirpur s/stn shifted to 220 kv Shalimar bagh 6) Any other relevant information: Affected load approx. 200 MW for 05 Min. Regards, Delhi SLDC 20220902173515 2022/09/02 17:35:16 1) Name of the substation and Time: At 17:19 HRS 220KV ParkStreet 2) Name of element tripped/restored: 100 MVA,220/33KV Tx No-4 ,TAL Make is energized in replacement of Faulty 100 MVA,220/33KV Tx No-4 of BHEL make which was went faulty on dated 30.05.2022 at 17:39 HRS 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Transformer is charged on no load Regards, Delhi SLDC 20220902142325 2022/09/02 14:23:25 1) Name of the substation and Time: 220kV Geeta colny, at 13:55 Hrs 2) Name of element tripped/restored: - 3) Relay Annunciation: Revised information :-Relay operated as per operation staff On 100 MVA-II- HV O/C and LV O/C. 4) Details of physically damaged equipment: 33kV I/C-II will be under break down as Circuit Breaker problem,It is required to replaced as per DM(T) G. clny 5) Immediate corrective/system normalization steps performed: 100 MVA Tx. -II has been energized on no load at 13:55 Hrs 6) Any other relevant information: NIL Regards, Delhi SLDC 20220902132034 2022/09/02 13:20:34 1) Name of the substation and Time: 220 kV Geeta colny, at 12:52 Hrs 2) Name of element tripped/restored: 100 MVA Tx. II along with 33 kV I/C-II tripped 3) Relay Annunciation: On 100MVA-II- 86, WTI, OTI, HV and LV. On 33kV I/C-II- 86 (Inter tripping) 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 33kV bus-coupler put on and system normalized at 12:55 hrs 6) Any other relevant information: Load effected approx. 45 MW for 03 minuts Regards, Delhi SLDC 20220902085047 2022/09/02 08:50:48 1) Name of the substation and Time: IP 2) Name of element tripped/restored: At 06:32Hrs 33KV I/C-II tripped on O/C Y and B-phase with the tripping of 33KV Bay 7(Exhibition-3) which tripped on O/C R-phase. Grid staff has reported electrocution of monkey. Load affected was 29MW. At 07:10Hrs 33KV I/C-II charged and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220901185434 2022/09/01 18:54:35 1) Name of the substation and Time: Najafgarh 2) Name of element tripped/restored: At 18:30Hrs 66KV I/C I,II,III and IV tripped on E/F with the tripping of 66KV Nangloi which tripped on O/C YB-phase E/F. Load affected was 260MW. At 18:40Hrs 66KV I/C I,II,III and IV charged and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220830191359 2022/08/30 19:14:01 1) Name of the substation and Time: 220kv sariataviahr 18.11 2) Name of element tripped/restored: 220kv SVR-MBAGH LINE 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20220830175110 2022/08/30 17:51:11 1) Name of the substation and Time: 220KV Maharanibagh 17.21 2) Name of element tripped/restored: 220KV Maharanibagh -Saritavihar 3) Relay Annunciation: zone 3,R ph ,7.3 km ,If=13 ka 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: AT 22O KV SVR END RELAYS NOTICED :ZONE1 ,r PH,3.36 KM Regards, Delhi SLDC 20220830174226 2022/08/30 17:42:27 1) Name of the substation and Time: 220kv geeta colony 17.21 2) Name of element tripped/restored: 220KV Buscoupler 3) Relay Annunciation: 86, E/F 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 17.30 hrs load restored aprox 48 mw effected 6) Any other relevant information: bypl conformed no shedding at theire end Regards, Delhi SLDC 20220830002947 2022/08/30 00:29:47 1) Name of the substation and Time: 220kV Dwarka, at 18:36 Hrs 2) Name of element tripped/restored: 220kV Dwarka-Naraina Ckt-1 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Energized at 00:18 Hrs dated 30.08.2022 and load has been taken . Regards, Delhi SLDC 20220830002414 2022/08/30 00:24:15 1) Name of the substation and Time: 220 KV Dwarka, at 18:36 Hrs. 2) Name of element tripped/restored: 220kV Dwarka-Naraina Ckt-1 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Energized at 00:18 hrs dated 30.08.2022 Regards, Delhi SLDC 20220829214825 2022/08/29 21:48:26 1) Name of the substation and Time: 220kV Dwarka, at 18:36 Hrs 2) Name of element tripped/restored: 220kV Naraina-Dwarka ckt-I tripped both end 3) Relay Annunciation: At Naraina end-A/R lockout, 80 BC-1, Zone-1, 86 AB,86 X, 86 ABC. At Dwarka end-Differential protection operated, fault location-8.7 kM, fault phase Current-15.3 kA. 4) Details of physically damaged equipment: As per AM(T) Narain, OPGW wire has been broken , massage given at 21:00 Hrs 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load effected Regards, Delhi SLDC 20220829123838 2022/08/29 12:38:39 1) Name of the substation and Time: 440KV Substation, Bamnauli, 12:20 2) Name of element tripped/restored: 220KV PPK-I, Ckt-II 3) Relay Annunciation: 86T, 86A, 86B, 86C, Zone-I, R-Phase 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: CB is already under OFF Position at PPK-I end. Regards, Delhi SLDC 20220827000844 2022/08/27 00:08:45 1) Name of the substation and Time: 220kV Geeta Clny, at 22:05 Hrs 2) Name of element tripped/restored: 100 MVA Tx. I and II alongwith 33kV I/C-I and II 3) Relay Annunciation: On 100 MVA Tx I-E/F, 86, IInd harmonic relay LV., On 100MVA Tx. II-86, On 33kV I/C-I- O/C, E/F ,86, On 33kV I/C-II- O/C ,86 4) Details of physically damaged equipment: 33kV I/C-I- R-Phase CB pole damaged. 5) Immediate corrective/system normalization steps performed: Load has been transfered by BYPL 6) Any other relevant information: Approx. 98MW load effected, 100 MVA Tx-II alongwith 33kV-I/c-II and 33kV Bus-coupler are energized and system is normalized at 22:50Hrs (Execpt 100 MVA Tx-I alongwith 33kV-I/c-I) Regards, Delhi SLDC 20220826190407 2022/08/26 19:04:08 1) Name of the substation and Time: At 17:42 HRS 220KV Narela 2) Name of element tripped/restored: 20MVA-I with 11KV I/C No-I 3) Relay Annunciation: y-phase differential REf LV and HV,86 4) Details of physically damaged equipment: Y-Ph LA damaged informed by operation staf at 18:53Hrs 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220826184417 2022/08/26 18:44:18 1) Name of the substation and Time: At 17:42 HRS 220KV Narela 2) Name of element tripped/restored: 20MVA-I with 11KV I/C No-I 3) Relay Annunciation: y-phase differential REf LV and HV,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 17:56 HRS 11KV Bus section close and system became normal 6) Any other relevant information: Approx 5MW load affected Regards, Delhi SLDC 20220826064305 2022/08/26 06:43:06 1) Name of the substation and Time: 220KV Dial, 02:47 2) Name of element tripped/restored: 02:47 (26.08.2022) 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: 160MVA-I along with 66KV I/C-I restored Regards, Delhi SLDC 20220825231647 2022/08/25 23:16:48 1) Name of the substation and Time: 220kV dial 2) Name of element tripped/restored: 66 kv incomer-1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: ON 66KV ONCOMMER B ph current not showing and hummimg noise coming out. Mnagaer (T) ,Dial informed to put off 66 kv incommer-1 Regards, Delhi SLDC 20220824160300 2022/08/24 16:03:01 1) Name of the substation and Time: At 15:56 HRS 220KV PPK-I 2) Name of element tripped/restored: 220KV DWARKA Ckt-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV DWARKA Ckt-II energized Regards, Delhi SLDC 20220824160259 2022/08/24 16:03:00 1) Name of the substation and Time: At 15:56 HRS 220KV PPK-I 2) Name of element tripped/restored: 220KV DWARKA Ckt-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV DWARKA Ckt-II energized Regards, Delhi SLDC 20220824155227 2022/08/24 15:52:28 1) Name of the substation and Time: At 220kV PPK-I, 15:30Hrs 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: System is normalized with load taken on 220kV Bamnouli Ckt-II ( excepted 100 MVA Tx.-I) 6) Any other relevant information: - Regards, Delhi SLDC 20220824154820 2022/08/24 15:48:21 1) Name of the substation and Time: At 220kV PPK-I, 14:47 Hrs. 2) Name of element tripped/restored: 1) 220kV Dwarka Ckt- II . 2) 100 MVA Tx. I 3 At drarka end,PPK-I Ckt-II tripped on diffential stage-1, faulty A-B Phase 3) Relay Annunciation: 1) 220kV Dwarka Ckt- II tripped without indcation. 2) 100 MVA Tx. I tripped on buchholze alam, buchholze trip, 86 AB trip. 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: DMRC and instructed to load transfer to another grid imediatly 6) Any other relevant information: Approx. 76 MW load effected Regards, Delhi SLDC 20220824121319 2022/08/24 12:13:20 1) Name of the substation and Time: At 11:40 HRS 220KV Parkstreet 2) Name of element tripped/restored: 220/66 KV,100MVA Tx No-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220/66 KV,100MVA Tx No-II Energized at no LOAD Regards, Delhi SLDC 20220822192856 2022/08/22 19:28:56 1) Name of the substation and Time: 400KV Bawana, 18:43 2) Name of element tripped/restored: 400KV Maharani Bagh Ckt.-I 3) Relay Annunciation: R-Phase Trip, Y-Phase Trip, Zone-2 and 3, Fault Location - 40.45Km, Fault Current, R-Phase - 8.708KA and Y-Phase - 7.716KA. 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20220821155216 2022/08/21 15:52:17 1) Name of the substation and Time: 220kv PPG 15:45 2) Name of element tripped/restored: 220KV PPG-GC CKT-2 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: NA Regards, Delhi SLDC 20220821154941 2022/08/21 15:49:42 1) Name of the substation and Time: 220kv ppg 14.57 2) Name of element tripped/restored: 220kb geeta colony -ppg ckt -2 3) Relay Annunciation: z1 R ph 4.028 kn cvt appearing at PPG end 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220819000552 2022/08/19 00:05:53 1) Name of the substation and Time: 220kV SOW, 22:15 Hrs. 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: staff visited yard, found kite thread and birdage on bus- bar and on 66kV I/C- IV CT clamp and Y-Ph Bus-I dropper juper snaped and Y-Ph disc damaged 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 23:22Hrs:- System is normal except 66kV I/C- IV with Bus-I Regards, Delhi SLDC 20220818234633 2022/08/18 23:46:34 1) Name of the substation and Time: 220kV SOW, at 22:15 Hrs 2) Name of element tripped/restored: 66kV I/C-IV tripped and staff visited yard, found kite thread and birdage on bus- bar and on 66kV I/C- IV CT clamp 3) Relay Annunciation: Y and B- Ph E/F, O/C 4) Details of physically damaged equipment: Y-Ph Bus-I dropper juper snaped and Y-Ph disc damaged 5) Immediate corrective/system normalization steps performed: System is normalized at 23:22 hrs. 6) Any other relevant information: Approx. 100 MW load effected Regards, Delhi SLDC 20220818184519 2022/08/18 18:45:27 1) Name of the substation and Time: At 18:40 HRS 220KV Mehrauli 2) Name of element tripped/restored: 220KV TUGB-MLI-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV TUGB-MLI-I restored Regards, Delhi SLDC 20220818003855 2022/08/18 00:38:55 1) Name of the substation and Time: 220 kv Saritavihar 00.21 hrs 2) Name of element tripped/restored: 220kv Saritavihar-Maharanaibagh ckt both end CB put off 3) Relay Annunciation: NA 4) Details of physically damaged equipment: Heavy sparking on tower at Gali no.11 jakeer Nagar ,Reopreted by loacal resident and same was conformed by AM(T),mtc Saritaviharr 5) Immediate corrective/system normalization steps performed: ckt both end CB put off 6) Any other relevant information: NA Regards, Delhi SLDC 20220817153407 2022/08/17 15:34:07 1) Name of the substation and Time: 220kV Mehrauli, at 13:35 Hrs. 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Normalized at 13:35Hrs Regards, Delhi SLDC 20220817143505 2022/08/17 14:35:06 1) Name of the substation and Time: 220kV Mehrauli, at 13:07 Hrs. 2) Name of element tripped/restored: 220kV Vasant Kunj Ckt-I tripped from Vsk end 3) Relay Annunciation: O/C, Y-Phase, master trip and auto trip 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: system is normalized by closing 220 kV Vasant Kunj Ckt-II 6) Any other relevant information: Approx. 63 MW load is effected. Regards, Delhi SLDC 20220817084650 2022/08/17 08:46:51 1) Name of the substation and Time: 220kv Geta Colony @ 00:05Hrs 2) Name of element tripped/restored: 100 MVA Tx. II charged on No Load @ 00:05 Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220817084425 2022/08/17 08:44:25 1) Name of the substation and Time: 220kv Geeta Colony 2) Name of element tripped/restored: 33kv Incomer -1 and 33kv Bus-1 charged @ 23:30 Hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220817084245 2022/08/17 08:42:46 1) Name of the substation and Time: 220kv Geeta Colony 2) Name of element tripped/restored: 33kv Incomer -1 and 33kv Bus-1 charged @ 23:30 Hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220816233748 2022/08/16 23:37:49 1) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: At 23:30Hrs 33KV I/C-1 charged on 33KV Bus-I. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220816231422 2022/08/16 23:14:23 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: 220KV Mandaula ckt-I charged at 23:11Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220816225559 2022/08/16 22:56:00 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: At 18:44Hrs supply fail of 220KV Mandaula ckt-II and 220KV Mandaula ckt-III. 220KV Mandaula ckt-I tripped on Z-1 0.1km BC-phase Ib=13.3KA Ic=13.5KA. No load was affected At 19:48Hrs 220KV Mandaula ckt-II closed and at 19:50Hrs 220KV Mandaula ckt-III closed from Mandaula end. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220816223936 2022/08/16 22:39:37 1) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: At 17:15Hrs 100MVA T/F-1 and 100MVA T/F-2 tripped. Y-phase Breaker pole of 33KV I/C-II damaged. On yard inspection by grid staff kite threads found on 220KV Bushing of R and B phase Bushings of 100MVA T/F-1. Relay on 100MVA T/F-1 are O/C B-phase HV LV REF. Relay on 100MVA T/F-2 are O/C differential. Load affected was 52MW. Discoms were asked to shift their load. At 19:03Hrs 100MVA T/F-1 charged at no load. At 20:06Hrs 33KV Bus-II back charged by 33KV Geeta colony ckt-I to feed 33KV Krishna Nagar ckt-I. Presently no load is affected and 100MVA T/-F-2, 33KV I/C-II ,33KV I/C-I and 33KV Bus-I is under breakdown and grid staff is attending the same. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220816174507 2022/08/16 17:45:08 1) Name of the substation and Time: 220kv South of Wazirabad 2) Name of element tripped/restored: 66kv Incomer- I, II, III and IV Restored @ 17:10 which were tripped @ 16:50 on Relays : O/C, E/F 3) Relay Annunciation: o/c, e/f 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220816171216 2022/08/16 17:12:17 1) Name of the substation and Time: 220kV SOW, at 16:00 Hrs. 2) Name of element tripped/restored: 220kV Bus-bar tripped alongwith 220kV Mandola Ckt-I and III, G.clony-I, kashmerigate-II, Gopalpur Ckt-I, 100 MVA Tx-I,II and III and 160 MVA Tx. CVT appeared from 220kV Mandola Ckt I and III 220kV Mandola Ckt- II and IV tripped from mandola Grid 3) Relay Annunciation: Bus-bar protection operated 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: System is normalized at 16:24 Hrs. except 220kV Mandola Ckt II and IV. 6) Any other relevant information: Approx. 227 MW load affected Regards, Delhi SLDC 20220816144133 2022/08/16 14:41:34 1) Name of the substation and Time: At 220kV Geeta Clny, 14:50 Hrs. 2) Name of element tripped/restored: 33kV B/C tripped 3) Relay Annunciation: 30CB auto tripped, 86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load has been taken on 33lV I/C-II 6) Any other relevant information: Approx. 50MW load affected only 5 Minuts, system is normalized at 14:55 Hrs. Regards, Delhi SLDC 20220815173339 2022/08/15 17:33:40 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 15:18Hrs 220KV Geeta colony ckt-I and II tripped on E/F, CVT of 220KV Geeta colony ckt-II available at Patparganj end. Load affected was approx. 130MW. Discoms were asked to shift their load. At 15:25Hrs 220KV Geeta Colony ckt-II tried but did not hold. At 15:32Hrs 220KV Gazipur ckt tried but tripped on R-phase differential. At 15:57Hrs 100MVA 220/33KV T/F-1 charged after shifting on 220KV Bus-II. At 16:03Hrs 100MVA 220/66KV T/F-1 charged after shifting on 220KV Bus-II. At 16:38Hrs 220KV Geeta colony ckt-II charged from Geeta Colony side. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220815162039 2022/08/15 16:20:39 1) Name of the substation and Time: Naraina 2) Name of element tripped/restored: 220KV Dwarka ckt-II tripped at 15:40Hrs on Line Differential BC-phase from both the ends. Load affected was 73MW. Load normalised through 220KV Ridge Valley ckt at 15:50Hrs. At 16:10Hrs 220KV Dwarka ckt-I and ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220815153033 2022/08/15 15:30:33 1) Name of the substation and Time: Naraina 2) Name of element tripped/restored: 220KV Bus-I Bus Bar relay operated on Z-1 5.3km at 14:34Hrs. Load affected was 78MW. Load normalised through 220KV Dwarka ckt-II at 14:50Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220815152445 2022/08/15 15:24:45 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: 220KV Mandaula ckt-III charged at 14:47Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220815151948 2022/08/15 15:19:48 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: 220KV Mandaula ckt-III charged at 14:47Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220815151731 2022/08/15 15:17:32 1) Name of the substation and Time: Bawana 2) Name of element tripped/restored: 400KV Maharani Bagh ckt-I charged at 14:04Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220815124717 2022/08/15 12:47:18 1) Name of the substation and Time: Bawana 2) Name of element tripped/restored: 400KV Maharani Bagh ckt-I tripped on Z-1 RY-phase 29km at 12:33Hrs. Ir=11.4KA Iy=10.3KA. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220815121653 2022/08/15 12:16:54 1) Name of the substation and Time: SOW 2) Name of element tripped/restored: 220KV Mandaula ckt-III tripped on Z-1 RY-phase 2.21km Ir=10.8KA Iy=11.2KA at 11:27Hrs. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220814162602 2022/08/14 16:26:02 1) Name of the substation and Time: IP 2) Name of element tripped/restored: 33KV I/C-3 tripped on B-phase O/C E/F at 14:43Hrs. B-phase Bus-II isolator of 33KV I/C-3 got damaged. Load affected was 48MW. Discoms had shifted their load. At 15:32Hrs 33KV B/C closed. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220813220045 2022/08/13 22:00:46 1) Name of the substation and Time: 220kV Gopal Pur, at 21:52Hrs 2) Name of element tripped/restored: 220kV Mandola Ckt-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220kV Mandola Ckt-II charged and taken the load on Ckt at 21:52 Hrs and 220kV SOW Ckt-I put off.System is normalized. Regards, Delhi SLDC 20220813191312 2022/08/13 19:13:13 1) Name of the substation and Time: 220kV Gopalpur, at 18:48hrs 2) Name of element tripped/restored: 220kV Mandola Ckt-II tripped 3) Relay Annunciation: Differential trip relay operated, R and Y-Ph trip, 186 Master relay, fault current A-Ph-97A, B-Ph- 478A, C-Ph-492A, 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Load taken immediate through 220kV Wazirabad-Gopalpur Ckt-I at 18:50Hrs. 6) Any other relevant information: Approx. Load affected-138MW for 2 minuts only Regards, Delhi SLDC 20220812081730 2022/08/12 08:17:31 1) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 06:25Hrs 100MVA 220/33KV T/F-3 tripped on 86 TC faulty, 33KV I/C-4 tripped on RYB-phase O/C, 33KV I/C-5 tripped without indication along with this 33KV Tughlakabad ckt-I and II and 33KV East of Kailash also tripped. Load affected was 57MW. 33KV I/C-5 charged at 06:55Hrs and load normalised. 33KV I/C-4 charged at 06:58Hrs. 100MVA 220/33KV T/F-3 charged at 08:07Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220811205024 2022/08/11 20:50:25 1) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: 100MVA T/F-1 and 100MVA T/F-2 tripped on O/C 86 at 18:48Hrs. B-phase bus isolator of 33KV Shakarpur got damaged. Load affected was 75MW. Discoms were asked to shift their load. 100MVA T/F-1 and 100MVA T/F-2 charged at 19:15Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220809190723 2022/08/09 19:07:24 1) Name of the substation and Time: 220KV IP 2) Name of element tripped/restored: 220KV IP-Patparganj-I 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: Circuit restored at 17:30Hrs. Regards, Delhi SLDC 20220809164235 2022/08/09 16:42:35 1) Name of the substation and Time: At 15:54 HRS 220KV Shalimar bagh 2) Name of element tripped/restored: 100MVA-III with 33KV I/C No-III and 20MVA with 11KV I/C 3) Relay Annunciation: 100MVA-96,86,O/C-Y phase 20MVA-Differential 87T,R,Y and b phase,86 4) Details of physically damaged equipment: 33KV YPhase CT Blast/burned/Damaged 5) Immediate corrective/system normalization steps performed: Load transfered by TPDDL 6) Any other relevant information: Load affected approx 53 MW Regards, Delhi SLDC 20220809141526 2022/08/09 14:15:27 1) Name of the substation and Time: At 10:50 HRS 220KV IP 2) Name of element tripped/restored: Due to Problem of CB operation at 220KV IP-Pataprganj ckt-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV IP-PPG ckt-I is not available in network. PTW issued at 11:20 HRS to maintenanace staff for 220KV CB rectification at 220KV IP substation Regards, Delhi SLDC 20220809125847 2022/08/09 12:58:48 1) Name of the substation and Time: At 11:21 HRS 220KV Substation Gopalpur 2) Name of element tripped/restored: 220KV Mandola CKT-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV Mandola-I charged and load taken Regards, Delhi SLDC 20220809125557 2022/08/09 12:55:58 1) Name of the substation and Time: At 09:56 HRS 220KV Gopalpur 2) Name of element tripped/restored: 220KV Mandola CKT-I tripped at Gopalpur end only 3) Relay Annunciation: R-Phase differential operated 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 09:56 HRs 220KV SOW-CKT-II ch.arged and systen became normal 6) Any other relevant information: Load affected approx 132 MW for 1 minute only Regards, Delhi SLDC 20220806234701 2022/08/06 23:47:02 1) Name of the substation and Time: At 19:25Hrs., 220KV kanjhawala 2) Name of element tripped/restored: 220KV Kanjhawala-Bawana Circuit - I and II, charged 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20220806141226 2022/08/06 14:12:27 1) Name of the substation and Time: Kanjhawala 13:18Hrs. 2) Name of element tripped/restored: 220KV Bawana ckt-I tripped on RB-phase Z-2 25.4km Supply fail of 220KV Bawana ckt-II. Relay at Bawana end on 220KV Kanjhawala ckt-I are R-phase Z-1 SOTF 8.3km fault current 4.8KA. Relay at Bawana end on 220KV Kanjhawala ckt-II are o/c 86 26.27km. Load affected was 120MW. Load normalised through 220KV Mundka ckt at 13:22Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220806075424 2022/08/06 07:54:25 1) Name of the substation and Time: 220 KV S.O.W. At-01:16 Hrs 2) Name of element tripped/restored: 100 MVA Tr-I with 66kV I/C-I tripped 3) Relay Annunciation: Magnitude current -138.3A,Ic-39.3Amp,REF HV,REF LV 71.62Amp.REF LV2-4.610Amp 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load NO Effected 6) Any other relevant information: Load has been taken to other transformer. Regards, Delhi SLDC 20220804073312 2022/08/04 07:33:13 1) Name of the substation and Time: Rajghat 2) Name of element tripped/restored: 100MVA T/F-1 tripped on differential RYB-phase LV REF at 04:50Hrs. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220802215843 2022/08/02 21:58:44 1) Name of the substation and Time: At 21:40Hrs 220 Kanjhawla 2) Name of element tripped/restored: 100 MVA -I and II charged at 21:18 and 21:40 Hrs resp. 3) Relay Annunciation: -- 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220802215526 2022/08/02 21:55:27 1) Name of the substation and Time: At 20:07 hrs. 220 KV Kanjhawala 2) Name of element tripped/restored: 100 MVA -I,II Tripped along with 66 KV I/C-I,II 3) Relay Annunciation: 100 MVA-I relay 86 Operated 100 MVA -II relay Any trip,O/C B ph. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 66 KV bus coupler close at 20:26Hrs 6) Any other relevant information: Load effected approx 56 MW Regards, Delhi SLDC 20220801192652 2022/08/01 19:26:53 1) Name of the substation and Time: 220kv masjid moth 18.55HR 2) Name of element tripped/restored: 100 mva tr-1 along with i/c 1,2 and 3 3) Relay Annunciation: non dir EF,DIFF B,C 87(1),87(2),87(3) ,86 4) Details of physically damaged equipment: NA MONKEY ELCTROCUTATED 5) Immediate corrective/system normalization steps performed: 19.10 MASJID MOTH S/STN POWER SUPPLY RESTORED 6) Any other relevant information: 19.10 MASJID MOTH S/STN POWER SUPPLY RESTORED Regards, Delhi SLDC 20220801192040 2022/08/01 19:20:40 1) Name of the substation and Time: 400 kv Teglakabad 18.10 2) Name of element tripped/restored: 220kv RK PURAM D/C NEW Tr cable charged 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: 18 30 HR LOAD TAKEN ON THIS FEEDER Regards, Delhi SLDC 20220801103405 2022/08/01 10:34:06 1) Name of the substation and Time: At 09:05Hrs, 220kV RPH 2) Name of element tripped/restored: 33kV I/C-II with Half bus-bar tripped due monkey electrocute 3) Relay Annunciation: Y and B-Ph O/C 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: 33kV B/c on and system normalized at 09:42 hrs 6) Any other relevant information: 33kV load affected approx. 80MW, 33kV I/C-II energized at 09:52 Hrs Regards, Delhi SLDC 20220801103230 2022/08/01 10:32:32 1) Name of the substation and Time: at 09:05 Hrs, 220KV RPH 2) Name of element tripped/restored: 33KV I/C no-II along with Half bus tripped due to money electrocute 3) Relay Annunciation: Y and B- Phase O/C Relay operated. 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: System Normailised at 09:42 Hrs by 33KV B/C CB closed and Load effected approx 80 MW. 6) Any other relevant information: 33KV I/C No-II Enersised at 09:52Hrs. Regards, Delhi SLDC 20220801103227 2022/08/01 10:32:30 1) Name of the substation and Time: at 09:05 Hrs, 220KV RPH 2) Name of element tripped/restored: 33KV I/C no-II along with Half bus tripped due to money electrocute 3) Relay Annunciation: Y and B- Phase O/C Relay operated. 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: System Normailised at 09:42 Hrs by 33KV B/C CB closed and Load effected approx 80 MW. 6) Any other relevant information: 33KV I/C No-II Enersised at 09:52Hrs. Regards, Delhi SLDC 20220801103226 2022/08/01 10:32:27 1) Name of the substation and Time: at 09:05 Hrs, 220KV RPH 2) Name of element tripped/restored: 33KV I/C no-II along with Half bus tripped due to money electrocute 3) Relay Annunciation: Y and B- Phase O/C Relay operated. 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: System Normailised at 09:42 Hrs by 33KV B/C CB closed and Load effected approx 80 MW. 6) Any other relevant information: 33KV I/C No-II Enersised at 09:52Hrs. Regards, Delhi SLDC 20220801103222 2022/08/01 10:32:26 1) Name of the substation and Time: at 09:05 Hrs, 220KV RPH 2) Name of element tripped/restored: 33KV I/C no-II along with Half bus tripped due to money electrocute 3) Relay Annunciation: Y and B- Phase O/C Relay operated. 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: System Normailised at 09:42 Hrs by 33KV B/C CB closed and Load effected approx 80 MW. 6) Any other relevant information: 33KV I/C No-II Enersised at 09:52Hrs. Regards, Delhi SLDC 20220731204752 2022/07/31 20:47:53 1) Name of the substation and Time: 220kv R.K. PURAM 2) Name of element tripped/restored: NEW 220KV FEEDERS 220KV RK PURAM - TUGHLAKABAD ENERGISED @ 20:38 (CKT-I) and 20:39 (CKT-II) 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20220731182700 2022/07/31 18:27:01 1) Name of the substation and Time: 220kv Patparganj 2) Name of element tripped/restored: 100 MVA Tx No. III, 220/33kV Restored @ 17:45 Hrs and load taken. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220731164343 2022/07/31 16:43:44 1) Name of the substation and Time: At. 16:07 Hrs, 220kV PPG 2) Name of element tripped/restored: 220/33kV 100 MVA Tx. III 3) Relay Annunciation: RY and B-Ph Differential relay with Master relay operated 4) Details of physically damaged equipment: 33kV R-Ph LA Damaged as per Grid information 5) Immediate corrective/system normalization steps performed: By using B/C load normalized and load affected Approx. 25 MW 6) Any other relevant information: NA Regards, Delhi SLDC 20220730161101 2022/07/30 16:11:01 1) Name of the substation and Time: Lodhi Road 2) Name of element tripped/restored: 11KV I/C-I charged at 15:45Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220730120043 2022/07/30 12:00:44 1) Name of the substation and Time: Lodhi Road 2) Name of element tripped/restored: 11KV I/C-I and II tripped on O/C RYB-phase with heavy sound and smoke at 10:24Hrs. Load affected was 7MW. Discoms have been asked to shift their load. Presently maintenance staff is attending the fault. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220729112205 2022/07/29 11:22:06 1) Name of the substation and Time: Kashmiri Gate 2) Name of element tripped/restored: 220KV SOW ckt-II tripped at 09:43Hrs. Relay at SOW end are R and Y-phase Z-1 1.4km fault current 18KA. Relay at Kashmiri Gate end are R and Y-phase Differential trip. Load affected was 13MW. Load normalised at 09:44Hrs through 220KV B/C. 220KV SOW-Kashmiri Gate ckt-II charged at 11:12Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220106122142 2022/01/06 12:21:43 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) 220KV testing 2) 220/33 testing 3) - 4) - 5) - 6) - Regards, Delhi SLDC 20220718184655 2022-07-18 18:46:56 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: 100MVA T/F-1 and 100MVA T/F-3 tripped without indication at 18:20Hrs. Load affected was 150MW (approx). Load normalised after charging 100MVA T/F-1 and 100MVA T/F-3 at 18:28Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220717212642 2022-07-17 21:26:43 1) Name of the substation and Time: 20:06Hrs, 220kV SOW 2) Name of element tripped/restored: 100 MVA Tx. I,II and III with 66kV I/c-I, II and III 3) Relay Annunciation: _ 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 100 MVA Tx. I,II and III with 66kV I/c- II and III are energized and 66kV I/C- I is in trip position due to not operated the CB. Regards, Delhi SLDC 20220717210836 2022-07-17 21:08:37 1) Name of the substation and Time: At 19:30Hrs, 220kV SOW 2) Name of element tripped/restored: 100 MVA Tx. I, II and III alongwith 66 KV I/C- I, II and III 3) Relay Annunciation: 100 MVA Tx. I relay operated-O/C YB-Ph, SP-I trip, 66 KV I/C- I relay operated -Y,B -pH, 186 100 MVA Tx. II relay operated-O/C YB-Ph, SP-I trip 66 KV I/C- II relay operated -Y,B -pH, 186 100 MVA Tx. III relay operated-O/C YB-Ph, SP-I trip 66 KV I/C-III relay operated -Y,B -pH, 186 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Load has been shifted to other substation by BYPL 6) Any other relevant information: Load effected approx. 132 MW and 66 KV I/C-I is tripped position Regards, Delhi SLDC 20220717202942 2022-07-17 20:29:43 1) Name of the substation and Time: At 19:50Hrs ,220kV PPG 2) Name of element tripped/restored: 220kV IP ckt-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 19:50 Hrs Ckt energized Regards, Delhi SLDC 20220717202617 2022-07-17 20:26:19 1) Name of the substation and Time: At 220kV PPG, 19:20 Hrs 2) Name of element tripped/restored: 220kV IP Ckt-I 3) Relay Annunciation: 220kV PPG- Trip R,Y and B- Ph trip distance 1.406 KM , Zone-I trip, O/C 86 220kV IP end distance 1.44 kM Zone -1,186,86 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: At 19.50 Hrs 220kV ckt normilized 6) Any other relevant information: load Approx. 55 MW effected . Regards, Delhi SLDC 20220716133426 2022-07-16 13:34:28 1) Name of the substation and Time: At 11:30 Hrs 220 kV Shalimar bagh 2) Name of element tripped/restored: 220kV Bawana ckt-1 and 2, 220kV SGTN Ckt-1 and 2, 220 kV DMRC Ckt- 1 and 2, 100 MVA -1,2 and 3 3) Relay Annunciation: Bus bar protection operated due to kite thread fell on 220 kV bus-1 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: At 11:40 hrs 220kV Bawana ckt-1 and 2, 220kV SGTN Ckt-1 and 2, 220 kV DMRC Ckt- 1 and 2 charged, At 11:42 Hrs-100 MVA -1,2 charged, At 12:44 Hrs- 100 MVA -3 charged 6) Any other relevant information: Total load effected approx. 339 MW system is normalized Regards, Delhi SLDC 20220715151305 2022-07-15 15:13:06 1) Name of the substation and Time: At 14:18 Hrs, 220kV Meharauli 2) Name of element tripped/restored: 220kV TUGB Ckt-I tripped 3) Relay Annunciation: At TUGB end R,Y and B-Ph. tripeed , Zone-3 tripped , distance-14.008 KM, Ib =9.373 KA 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: At 14:41 hrs charged system normalized 6) Any other relevant information: Load effected 105 MW approx. Regards, Delhi SLDC 20220713190553 2022-07-13 19:05:55 1) Name of the substation and Time: 18:47 Hrs, 220kV Geeta Colony 2) Name of element tripped/restored: 220kV Geeta colony - SOW ckt1 charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20220713183908 2022-07-13 18:39:10 1) Name of the substation and Time: 18:15Hrs 220kV Geeta colony 2) Name of element tripped/restored: 220kV Geeta Colony- SOW-Ckt-1 3) Relay Annunciation: R-Y Phase, Distance Z-1, 240Mtr from SOW S/stn 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Informed to S/stn staff to check the ckt. 6) Any other relevant information: NIL Regards, Delhi SLDC 20220709222625 2022-07-09 22:26:26 1) Name of the substation and Time: Correction: 220kV Pappankala 2 ckt 1 and 2 charged for the first time on no load from 220kV Dwarka end at 21:31 and 21:33 Hrs respectively 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load to be taken on 11/07/2022 after mapping of available raw SCADA data in SCADA HMI displays Regards, Delhi SLDC 20220709222406 2022-07-09 22:24:07 1) Name of the substation and Time: 220kV Pappankala 2 ckt 1 and 2 charged for the first time on no load from 220kV Dwarka end. 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load to be taken on 11/07/2022 after mapping of available raw SCADA data in SCADA HMI displays Regards, Delhi SLDC 20220708181223 2022-07-08 18:12:23 1) Name of the substation and Time: 220 Kv Geeta Colony 2) Name of element tripped/restored: at 17:05 hrs Incomer-II charged.but at 17:20 hrs incomer-II again tripped on Over current.at 17:32 hrs incomer -II charged along with all 33 kv feeders. 3) Relay Annunciation: na 4) Details of physically damaged equipment: common jumper of bus-II of 33 KV Kanti nagar ckt-I 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: No load affected after 17:32 hrs.Incomer-I ,33 Kv bus-II still out attended by Mtc. staff. Regards, Delhi SLDC 20220708164832 2022-07-08 16:48:32 1) Name of the substation and Time: 220kV Geeta Colony at 16:25 hrs 2) Name of element tripped/restored: 33kV Kanti Nagar ckt 1, 33kV B/C, 33kV I/C I and II 3) Relay Annunciation: -- 4) Details of physically damaged equipment: R ph common jumper of 33kV Kanti Nagar ckt 1 broke and fell on nearby gantry 5) Immediate corrective/system normalization steps performed: BYPL instructed to divert all possible load 6) Any other relevant information: total load approx 128MW effected initially of which abouy 30 MW has been diverted by BYPL. Regards, Delhi SLDC 20220708140429 2022-07-08 14:04:31 1) Name of the substation and Time: At 400kV Bawana and 220kV Kanjhawla 11:54 Hrs 2) Name of element tripped/restored: Bawana 315 MVA ICT 3 tripped effecting all load of 220kV Kanjhawla. Also trippings on Kanjhawla 100MVA Tx 1 and 2 and 160MVA Tx. 3) Relay Annunciation: At Bawana: 86A1,B1, Dir. E/F,At Kanjhawla: 100MVA Tx 1 and 2 on 86 while 160MVA Tx on O/C RYB ph ANE trip 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Kanjhawala restored on 220kV Mundka-Kanjhawala ckt. and feeders normalized from 12:41 to 13:16 hrs 6) Any other relevant information: approx 150 MW load effected, normalized by TPDDL in approx 15 to 20 minutes. ICT 3 charged at 13:07 Hrs. and Kanjhawala-Bawana 1 and 2 charged and load taken on 13:57 hrs. Regards, Delhi SLDC 20220707153227 2022-07-07 15:32:28 1) Name of the substation and Time: At 220kV Naraina 12:58 Hrs 2) Name of element tripped/restored: 220kV B/C, 220kV Dwarka ckt 1, 100MVA Tx-2 and 100MVA Tx-3 3) Relay Annunciation: Bus bar Protection on Bus 1 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220kV Ridge Valley ckt put on and 100MVA-1 Normalized (on Bus 2) at 13:10 hrs. 220kV Dwarka ckt 1, Bus 1, Tx 2 and 3 normalized at 13:29 6) Any other relevant information: approx 200MW load was effected which was restored at 13:29 Hrs. 220kV Dwarka-Naraina ckt 2 was put off for S/D at 12:36 hrs. After Tripping, S/D was cancelled. System normalized at 14:00Hrs. Regards, Delhi SLDC 20220706113824 2022-07-06 11:38:25 1) Name of the substation and Time: Pragati 2) Name of element tripped/restored: GT-2 tripped on internal fault at 10:31Hrs. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220705132952 2022-07-05 13:29:53 1) Name of the substation and Time: Wazirpur 2) Name of element tripped/restored: 100MVA T/F-2 charged at 13:21Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220705132711 2022-07-05 13:27:12 1) Name of the substation and Time: Naraina 2) Name of element tripped/restored: 100MVA T/F-3 charged at no load at 12:44Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220705132433 2022-07-05 13:24:34 1) Name of the substation and Time: Naraina 2) Name of element tripped/restored: 100MVA T/F-3 charged at no load at 12:44Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220705115320 2022-07-05 11:53:22 1) Name of the substation and Time: Wazirpur 2) Name of element tripped/restored: 100MVA T/F-2 tripped on oil surge relay at 10:58Hrs. Load affected was 57MW. Discoms have shifted its load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220703000822 2022-07-03 00:08:23 1) Name of the substation and Time: Kanjhawala 2) Name of element tripped/restored: 100MVA T/F-2 charged at 21:31Hrs and 100MVA T/F-1 charged at 22:12Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220702210147 2022-07-02 21:01:48 1) Name of the substation and Time: Kanjhawala 2) Name of element tripped/restored: 100MVA T/F-1 tripped on 86, 100MVA T/F-2 tripped on RYB-phase O/C E/F and 66KV DMRC tripped on RY-phase O/C at 20:05Hrs. Load affected was 54MW. Load normalised through 66KV B/C at 20:20Hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220701105815 2022-07-01 10:58:16 1) Name of the substation and Time: At GTPS(09:48hrs) 2) Name of element tripped/restored: 66KV I/C-I and II of 160MVA transformers tripped. 3) Relay Annunciation: E/F and O/C. 4) Details of physically damaged equipment: NCT of HV and LV side of both 160MVA transformers found flashed. 5) Immediate corrective/system normalization steps performed: All the concerned utilities informed to C/O their load on other sources. 6) Any other relevant information: Monkey electocuted in 66KV yard of GTPS. However 25MW load of NDMC still remains affected. Regards, Delhi SLDC 20220630205357 2022-06-30 20:53:58 1) Name of the substation and Time: At 220 KV Naraina 2) Name of element tripped/restored: 100 MVA-II charged at 20:10hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220630164555 2022-06-30 16:45:56 1) Name of the substation and Time: At 16:16 HRS 220KV NARAINA 2) Name of element tripped/restored: 100MVA-II with 33KV I/C-II 3) Relay Annunciation: SPR,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 16:32 HRS 33KV Bus coupler closed 6) Any other relevant information: Load affected approx 74MW Regards, Delhi SLDC 20220630122126 2022-06-30 12:21:27 1) Name of the substation and Time: At 12:15 HRS 220KV M.MOTH 2) Name of element tripped/restored: 100MVA-II with 33KV I/C No-II tripped 3) Relay Annunciation: PRV operated ,86 I and II 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 33KV Buscoupler was alredy closed hence no load affected 6) Any other relevant information: - Regards, Delhi SLDC 20220628144350 2022-06-28 14:43:50 1) Name of the substation and Time: PPK-1 2) Name of element tripped/restored: 220KV Dwarka ckt-II made off by grid staff manually due to fire observed in Y-phase Bus-II isolator at 13:34Hrs. Load affected was 145MW. Load normalised through 220KV Bamnauli ckt-II at 13:45. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220628133324 2022-06-28 13:33:25 1) Name of the substation and Time: Rajghat 2) Name of element tripped/restored: 33KV I/C-1 made off by grid staff manually due to fire observed in B-phase bus isolator of 33KV I/C-I at 13:02Hrs. Load affected was 42MW. Load normalised through 33KV B/C at 13:16Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220628132420 2022-06-28 13:24:21 1) Name of the substation and Time: PPK-3 2) Name of element tripped/restored: 160MVA T/F-2 tripped on IV REF at 12:53Hrs. Load affected was 74MW. Load normalised through 66KV B/C at 13:03Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220628131939 2022-06-28 13:19:40 1) Name of the substation and Time: Mehrauli and Vasant Kunj 2) Name of element tripped/restored: 220KV Tughlakabad-Mehrauli ckt-I tripped at 12:10Hrs. Relay at Tughlakabad end are RYB-phase Z-2. 220KV Vasant Kunj-Mehrauli ckt-I tripped on E/F and 220KV Vasant-Mehrauli ckt-II tripped without indication at 12:10Hrs. Load affected was approx. 140MW of Mehrauli and 138MW of Vasant Kunj. Load of Vasant Kunj normalised through 220KV R.K Puram ckt-I and II at 12:17Hrs. 220KV Tughlakabad-Mehrauli ckt-I charged at 12:34Hrs and load of Mehrauli normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220628131316 2022-06-28 13:13:17 1) Name of the substation and Time: Mehrauli and Vasant Kunj 2) Name of element tripped/restored: 220KV Tughlakabad-Mehrauli ckt-I tripped at 12:10Hrs. Relay at Tughlakabad end are RYB-phase Z-2. 220KV Vasant Kunj-Mehrauli ckt-I tripped on E/F and 220KV Vasant-Mehrauli ckt-II tripped without indication at 12:10Hrs. Load affected was approx. 140MW of Mehrauli and 138MW of Vasant Kunj. Load of Vasant Kunj normalised through 220KV R.K Puram ckt-I and II at 12:17Hrs. 220KV Tughlakabad-Mehrauli ckt-I charged at 12:34Hrs and load of Mehrauli normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220627222030 2022-06-27 22:20:31 1) Name of the substation and Time: DTL 20:22HRs 2) Name of element tripped/restored: Load Curtail to maintain grid balance 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: Even after repeated violation massages, discoms did not curtail overdrawl at low frequency of 49.59Hz in consultation with NRLDC and discoms following steps were taken to maintain grid balance. 400/220/66kV S/stn Mundka, At 20:25Hrs, 66kV Munka ckt-1 switched off 25MW load curtailed. 220KV Shalibarbagh, Ranibagh ckt switched off, At 20:32Hrs, 21 MW load curtailed, At 20:38Hrs Wazirpur-II cktII Switched off 13MW load curtailed, both ckt restored at 21:00Hrs 220kV Peeragarhi, At 20:22Hrs all 33kV feeders switched off, 187MW Load Curtailed, at 20:36Hrs Mukharji park ckt 1 and 2 and Pashchim puri ckt 1 and 2 switched on 42MW. 1 unit of CCGT bawana has been synchronized at 19:35 hrs. and massage conveyed to bring one unit of PPCL-I (150 mw) and 1 unit of GTPS on bar. Some load was also curtailed by Discoms at their end, quantum of load is yet not uploaded. Regards, Delhi SLDC 20220627111854 2022-06-27 11:18:55 1) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: 160MVA T/F-1 tripped without indication at 10:50Hrs. Load affected was 58MW. 160MVA T/F-1 charged at 10:53Hrs and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220625082942 2022-06-25 08:29:43 1) Name of the substation and Time: Rajghat 2) Name of element tripped/restored: 100MVA T/F-2 charged at 08:00Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220625030442 2022-06-25 03:04:43 1) Name of the substation and Time: Rajghat 2) Name of element tripped/restored: 100MVA T/F-2 tripped on PRV at 00:40Hrs. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220622204937 2022-06-22 20:49:38 1) Name of the substation and Time: 220 KV Ghazipur 2) Name of element tripped/restored: 220 KV MBGH ckt-II charged at 20:05 hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220622192546 2022-06-22 19:25:47 1) Name of the substation and Time: 220 KV Gazipur at 19:00 hrs 2) Name of element tripped/restored: 220 KV MBGH ckt-II tripped from Both end on distance prot.z-IY phase 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: no load affected. Regards, Delhi SLDC 20220622092823 2022-06-22 09:28:27 1) Name of the substation and Time: IP 2) Name of element tripped/restored: 33KV I/C I and 33KV I/C-II tripped on E/F at 08:12Hrs. Load affected was 53MW. 33KV I/C-I charged at 08:23Hrs and load normalised. 33KV I/C-II charged at 08:40Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220621181625 2022-06-21 18:16:28 1) Name of the substation and Time: Lodhi Road 2) Name of element tripped/restored: 220KV Maharani Bagh ckt-I charged at 17:45Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220621163919 2022-06-21 16:39:20 1) Name of the substation and Time: AT-15:50 Hrs ,220 KV Masjid moth 2) Name of element tripped/restored: 220 KV Maharani Bagh ckt-1 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Restored at 15:50 Hrs) Regards, Delhi SLDC 20220621161752 2022-06-21 16:17:54 1) Name of the substation and Time: M bagh 1530 hrs 2) Name of element tripped/restored: lodhi road ckt1 3) Relay Annunciation: distance protection, 0.1 km, 33 kA fault in R phase 4) Details of physically damaged equipment: none reported 5) Immediate corrective/system normalization steps performed: load made normal by switching B coupler ON 6) Any other relevant information: 220 kV M Moth ckt1 also tripped at M Moth end at the same time. Total load affected about 95 MW for 5 mins Regards, Delhi SLDC 20220616140015 2022-06-16 14:00:17 1) Name of the substation and Time: At Sarita Vihar(12:53hrs) 2) Name of element tripped/restored: 220KV Pragati 3) Relay Annunciation: Tripped on B-N phase(RYB) ,1.8KA fault current. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Pragati station. 6) Any other relevant information: A/R operated. Regards, Delhi SLDC 20220616085332 2022-06-16 08:53:33 1) Name of the substation and Time: At 220kV Gopalpur, at 08:04 Hrs 2) Name of element tripped/restored: 220kV Mandola ckt 2 energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220616085207 2022-06-16 08:52:08 1) Name of the substation and Time: At 220kV IP, at 08:49 2) Name of element tripped/restored: 220kV Pragati ckt energized. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220616025515 2022-06-16 02:55:16 1) Name of the substation and Time: At 220kV IP 02:30 Hrs 2) Name of element tripped/restored: 220kV Pragati ckt 2 3) Relay Annunciation: 86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Line didnot trip at Pragati end Regards, Delhi SLDC 20220616024442 2022-06-16 02:44:43 1) Name of the substation and Time: At 220kV Gopalpur 02:00 Hrs 2) Name of element tripped/restored: 160MV tx 4 220/66kV 3) Relay Annunciation: differential, LV REF, Buchholz 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Discom instructed to shift load 6) Any other relevant information: 53 MW load effected, Shifted by TPDDL Regards, Delhi SLDC 20220616024213 2022-06-16 02:42:15 1) Name of the substation and Time: At 220kV Pragati 01:37 Hrs 2) Name of element tripped/restored: 220kV Sarita Vihar ckt 3) Relay Annunciation: At PGT: Z-1, 4 CN Phase , At SVR: 36.13km, BM Phase 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Tried but didnot hold. 220kV B/C put on at Pragati and MBG ckt put off.at 01:56Hrs 6) Any other relevant information: - Regards, Delhi SLDC 20220616023949 2022-06-16 02:39:51 1) Name of the substation and Time: At 220kV Gopalpur 01:30 Hrs 2) Name of element tripped/restored: 220kV Mandola ckt 2 3) Relay Annunciation: Y B Ph differential 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220kV Wazirabad ckt 1 put on at 01:32 hrs 6) Any other relevant information: 75MW load effected Regards, Delhi SLDC 20220614183706 2022-06-14 18:37:08 1) Name of the substation and Time: 220kV Okhla 18:05Hrs 2) Name of element tripped/restored: 100MVA Transformer NO.4. 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: 100MVA Transformer, 220/66-33/11kV EMCO make, shifted from 220kV Pappankalan-1, to replace the damaged 100MVA 220/33kV transformer at 220kV Okhla. Regards, Delhi SLDC 20220614160144 2022-06-14 16:01:45 1) Name of the substation and Time: AT 15:30 Hrs,220 KV Lodhi Road 2) Name of element tripped/restored: 33 KV I/C-II with 33 KV HUDCO frd tripped 3) Relay Annunciation: 67N,86A,B 4) Details of physically damaged equipment: 33 KV HUDCO cable found puncture by JCB 5) Immediate corrective/system normalization steps performed: AT 15:40 Hrs 33 KV I/C -II Charge 6) Any other relevant information: Load effected aprox.60 MW onlay 10 Mint. and system normal Regards, Delhi SLDC 20220614154738 2022-06-14 15:47:39 1) Name of the substation and Time: 15:30Hrs.220KV I.P. 2) Name of element tripped/restored: 33 KV I/C-II 3) Relay Annunciation: Earth Fault ,Birdage 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: AT 15:38 HRS 33 KV I/C-II Charge and load taken 6) Any other relevant information: Load effected approx. 65 MW Only 09 Min. System Normal Regards, Delhi SLDC 20220613004021 2022-06-13 00:40:22 1) Name of the substation and Time: At Patparganj(23:26hrs). 2) Name of element tripped/restored: 66KV I/C-I and II. 3) Relay Annunciation: tripped on E/F,86. 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: Yard visited by grid staff, found OK. 6) Any other relevant information: 66KV B/C was on at the time of tripping. Regards, Delhi SLDC 20220613003639 2022-06-13 00:36:40 1) Name of the substation and Time: At Patparganj(23:03hrs) 2) Name of element tripped/restored: 66KV I/C- I and II 3) Relay Annunciation: tripped on E/F, 86. 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: BSES asked to C/O load. 6) Any other relevant information: No feeder tripped. Regards, Delhi SLDC 20220611202558 2022-06-11 20:25:59 1) Name of the substation and Time: 220kV Patparganj 19:07Hrs 2) Name of element tripped/restored: 220kV Bus-II, Tripped, resulting tripping of 220kV Geeta Colony ckt-1 and 2 and 220kV IP ckt-1 and 2. 3) Relay Annunciation: Bus Bar operated, resulting disturbance of 230MW load loss for 2 Min, and 19MW load shed due to overloading of 220kV Maharnibagh-Pragati ckt 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: 220kV Bus coupler switch ON at 220kV Pragati to manage load of 220kV IP and Rajghat S/stns 6) Any other relevant information: At 19:30 HRs 220kV Geeta Colony-Patparganj ckt 1 and 2 and 220kV IP-Pragati ckt 1 and 2 charged and load Normalized Regards, Delhi SLDC 20220607213450 2022-06-07 21:34:51 1) Name of the substation and Time: AT 21:20 HRS 220KV park street 2) Name of element tripped/restored: 30MVA Tx No-I and II charged/energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 20:45 HRS Prashad Nagar-II charged Regards, Delhi SLDC 20220607213222 2022-06-07 21:32:22 1) Name of the substation and Time: AT 20:17 HRS 220KV parkstreet 2) Name of element tripped/restored: 30MVA Tx No-I and II 3) Relay Annunciation: Any trip E/F HT 86 operated both tranformer 4) Details of physically damaged equipment: 33KV Prashad nagar-I porcelien part of Bus isolator insulator found crack 5) Immediate corrective/system normalization steps performed: 33KV Prashad nagar -2 taken load through 33KV Bus-I 6) Any other relevant information: approx 19MW load affected for 28Minutes only Regards, Delhi SLDC 20220607212231 2022-06-07 21:22:31 1) Name of the substation and Time: 16:39 HRS 400KV Mundka 2) Name of element tripped/restored: 220KV Mundka-Kanjhawala ckt tripped 3) Relay Annunciation: At Mundka RB phase zone 2 and 3 Distance 10.3.3KM,Ir 415A,Iy428A and Ib 241A 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Maintenance staff of KNJ taken PTW Regards, Delhi SLDC 20220607190517 2022-06-07 19:05:20 1) Name of the substation and Time: AT 400 KV CCGT BAWANA inter connectors put on at 16:35 Hrs 2) Name of element tripped/restored: both circuits 220 kv Shalimaar Baagh, 220 kv Rohini and DSIIDC ckts restored 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: both 400kV interconnectors made on and 315 MVA ICT 1, 4, 5, 6 normalized 6) Any other relevant information: approx. 750 MW Load affected Regards, Delhi SLDC 20220607185817 2022-06-07 18:58:18 1) Name of the substation and Time: test 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: test Regards, Delhi SLDC 20220607170048 2022-06-07 17:00:50 1) Name of the substation and Time: At 16:01 400 KV CCGT BAWANA 2) Name of element tripped/restored: BOTH BUS OF 400 KV DEAD AT 400 KV CCGT BAWANA 3) Relay Annunciation: NA 4) Details of physically damaged equipment: 400 KV HISSAR LINE CONDUCTOR SNAPPED AND HANGING ON 400 KV BHADURGARH LINE 5) Immediate corrective/system normalization steps performed: 400 KV INTERCONNECTOR TO BE MADE ON 6) Any other relevant information: NRLDC ISSUED CODE FOR CONNECTING INTERCONNECTOR Regards, Delhi SLDC 20220606190012 2022-06-06 19:00:13 1) Name of the substation and Time: 220kV Peeragarhi, 18:50Hrs 2) Name of element tripped/restored: 100MVA Transformer No.1 charged. 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NEW 100MVA TRANSFORMER, TAL MAKE,2022 is installed and charged in replacement of old IMP make transformer damaged on 11.07.2021. Regards, Delhi SLDC 20220605171952 2022-06-05 17:19:54 1) Name of the substation and Time: At 17:03 HRS 400KV MBG 2) Name of element tripped/restored: 220KV Sarita vihar ckt tripped 3) Relay Annunciation: Relay MBG- Gen trip,R-phase trip, zone-I Distance 4.1KM SARITAVIHAR A/R L/O, Distance protection operated,zone-I R-phase, distance 8.351KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220605163748 2022-06-05 16:37:49 1) Name of the substation and Time: At 16:35HRS 220KV Mehrauli 2) Name of element tripped/restored: 100MVA-II with 66KV I/C-II energised 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220605152146 2022-06-05 15:21:47 1) Name of the substation and Time: At 14:34 HRS 220KV Mehrauli 2) Name of element tripped/restored: AT 14:34 HRS Transformer 1,3 and 4 energised. and system normalised 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: AT 14:34 HRS Transformer 1,3 and 4 energised. Load affected 140MW MW approx. And system normalised 6) Any other relevant information: AT 14:16 HRS 100 MVA-II also tripped w/o indication and did not closed Regards, Delhi SLDC 20220605151645 2022-06-05 15:16:47 1) Name of the substation and Time: At 220KV Mehrauli 14:16 HRS 100MVA-I and III tripped and Tx No-4 tripped at 14:22 HRS 2) Name of element tripped/restored: 100MVA-I and III tripped and Tx No-4 tripped at 14:22 HRS 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: AT 14:34 HRS Transformer 1,3 and 4 energised. Load affected 140MW MW approx. And system normalised 6) Any other relevant information: - Regards, Delhi SLDC 20220605150845 2022-06-05 15:08:46 1) Name of the substation and Time: AT 14:05 HRS 220KV TUGB 2) Name of element tripped/restored: 220KV TUGB-Mehrauli ckt-II charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 14:07HRS at VSK S/stn Load taken on 220KV mehrauli-II and 220KV Buscoupler made offf Regards, Delhi SLDC 20220605150157 2022-06-05 15:01:59 1) Name of the substation and Time: At 13:45 HRS 220KV TUGB 2) Name of element tripped/restored: 220KV TUGB Mehrauli ckt-II tripped 3) Relay Annunciation: Relay Zone-3,Zone-2,R.Y,B Phase trip Ir 11.39KA, Distance 9.5KM 4) Details of physically damaged equipment: Mehrauli-VSK-II supply failed breaker didnot trp at VSK Side 5) Immediate corrective/system normalization steps performed: AT 13:47 HRS ,Vasant Kunj -220KV CB of mehrauli -II manually trip and 220KV Buscoupler closed and system normalised at VSK,Load affected approx 57MW for 2 minutes at VSK. At 220KV Mehrauli-Due to DMRC one ckt affected 100MVA transformer shifted. 6) Any other relevant information: - Regards, Delhi SLDC 20220603223737 2022-06-03 22:37:39 1) Name of the substation and Time: CCGT Bawana, 22:04 Hrs 2) Name of element tripped/restored: GT-I, STG-I, Tripped, 300MW Generation loss 3) Relay Annunciation: Due to internal fault 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20220602194346 2022-06-02 19:43:47 1) Name of the substation and Time: At 17:55 HRS 220KV RPH 2) Name of element tripped/restored: 100MVA-2 with 33KV I/C-II charged and load taken 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220602155212 2022-06-02 15:52:13 1) Name of the substation and Time: 220kV Rajghat, 14:55Hrs 2) Name of element tripped/restored: 33kV Incomer of 100MVA Tr. 2 manually switched of due to heave flashing in incomer isolator, 42MW Load affected for 8Min 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: PTW Issued 6) Any other relevant information: Buscoupler switched ON at 15:03Hrs to normalize the load Regards, Delhi SLDC 20220602115852 2022-06-02 11:58:53 1) Name of the substation and Time: 220kV Parkstreet 2) Name of element tripped/restored: 100/33kV TR No.1, Put on Load. 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20220602082955 2022-06-02 08:29:56 1) Name of the substation and Time: At SGTN(18:22hrs) 01.06.22 2) Name of element tripped/restored: 160MVA-II 3) Relay Annunciation: low gas pressure in BP-III chamber of 66KV I/C-II 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: Emergency S/D taken. 6) Any other relevant information: Permit issued to maintenance staff at 08:15hrs(02.06.22) Regards, Delhi SLDC 20220601145658 2022-06-01 14:57:01 1) Name of the substation and Time: 400 KV Mundaka at 14:29 hrs 2) Name of element tripped/restored: 400 Kv Bawana-Mundaka ckt-II tripped on distance prot R pahse ,zone-I ,7.87 KM,15.59 KA. from Mundka. No load affected 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220530195636 2022-05-30 19:56:37 1) Name of the substation and Time: AT 17:55HRS 400KV Bawana 2) Name of element tripped/restored: 400KV CB No-1552 and 400KV CB 1752 of 400KV lines of Maranibagh ckt-I and II charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220530194458 2022-05-30 19:44:59 1) Name of the substation and Time: AT 17:36 HRS 220Geetacolony 2) Name of element tripped/restored: 220KV SOW-Geetacolony ckt-I and II charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220530194014 2022-05-30 19:40:17 1) Name of the substation and Time: At 19:30HRS 220KV Gopalpur 2) Name of element tripped/restored: 220KV GOpalpur-mandola-II charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220530192341 2022-05-30 19:23:45 1) Name of the substation and Time: At 19:21 HRS 220KV Kashmirigate 2) Name of element tripped/restored: 220KV KGT-SOW ckt-I charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220530191732 2022-05-30 19:17:33 1) Name of the substation and Time: At 17:14 HRS 220KV Saritavihar 2) Name of element tripped/restored: 220KV SVR-Paragati ckt charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220530190236 2022-05-30 19:02:38 1) Name of the substation and Time: At 18:58 HRS 220KV Saritavihar 2) Name of element tripped/restored: 220KV SVR-MBG ckt charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220530184538 2022-05-30 18:45:39 1) Name of the substation and Time: 220 KV Gopal pur At 18:05 Hrs 2) Name of element tripped/restored: 220KV Gopalpur- Mandola ckt-1 charge 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220530184056 2022-05-30 18:40:56 1) Name of the substation and Time: At 18:07 HRS 220KV TUGB 2) Name of element tripped/restored: 220kv TUGB-Mehrauli-II charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220530183729 2022-05-30 18:37:34 1) Name of the substation and Time: At 18:01 HRS 220 Kv Geeta Colony 2) Name of element tripped/restored: 220KV Geeta-PPG-I charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220530182016 2022-05-30 18:20:17 1) Name of the substation and Time: 220 kv Geeta Colony 18:02Hrs 2) Name of element tripped/restored: 220 KV Geeta colony - Kashmari gate ckt-1 Restroed at 18:03 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220530173504 2022-05-30 17:35:05 1) Name of the substation and Time: 400 kv BAWANA 2) Name of element tripped/restored: TIE CB#1552 AND 1752 TRIPPED OF 400 KV MAHARANI BAAG CKT.1 and 2 3) Relay Annunciation: W/O INDICATION 4) Details of physically damaged equipment: NO 5) Immediate corrective/system normalization steps performed: NO LOAD AFFECTED AS SUPPLY ON THROUGH MAIN BRKR 6) Any other relevant information: NA Regards, Delhi SLDC 20220530173430 2022-05-30 17:34:31 1) Name of the substation and Time: Various 220 kV elements tripped at from 16:25 hrs onwards 2) Name of element tripped/restored: SoW - K Gate Ckt 1 Geeta Colony - SoW Ckt 1 and 2 Geeta Colony - PPG ckt 1 M Bagh - Gazipur ckt - 1 M Bagh - Sarita Vihar Sarita Vihar - Pragati Mehrauli - Tugh Ckt - 2 Mehrauli - V Kunj Ckt - 2 3) Relay Annunciation: Details Avaited 4) Details of physically damaged equipment: Details Avaited 5) Immediate corrective/system normalization steps performed: Details Avaited 6) Any other relevant information: Total load reduction of about 2000 MW observed. Many 66kV and 33kV elements also tripped. Regards, Delhi SLDC 20220529214942 2022-05-29 21:49:43 1) Name of the substation and Time: At 400 KV Mundaka 2) Name of element tripped/restored: 400 KV Bawana-mundka ckt-II charged at 21:29 hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220529213313 2022-05-29 21:33:14 1) Name of the substation and Time: At 220 KV Narela 2) Name of element tripped/restored: 220 KV PNP ckt-III charged at 21:27 hrs, 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220529195113 2022-05-29 19:51:14 1) Name of the substation and Time: At 400 KV Bawana 2) Name of element tripped/restored: 400 Kv Abdullapur ckt charged at 19:23 hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220529183125 2022-05-29 18:31:26 1) Name of the substation and Time: 220kV Narela 18:14Hrs 2) Name of element tripped/restored: Panipat Ckt-I, II 65MW Load Affected for 3 Min At 18:17Hrs B/C ON 3) Relay Annunciation: Not informed 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: NIl Regards, Delhi SLDC 20220529182837 2022-05-29 18:28:38 1) Name of the substation and Time: 400kV Bawana 18:14Hrs 2) Name of element tripped/restored: 400kV Abdulapur 3) Relay Annunciation: B-Ph, Z-I, 12.8Km 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20220529182635 2022-05-29 18:26:35 1) Name of the substation and Time: 220kV Narela 17:49Hrs 2) Name of element tripped/restored: Panipat ckt-III 3) Relay Annunciation: RYB-Ph, Z-II, A/R LO 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20220529182627 2022-05-29 18:26:29 1) Name of the substation and Time: 220kV Narela 17:49Hrs 2) Name of element tripped/restored: Panipat ckt-III 3) Relay Annunciation: RYB-Ph, Z-II, A/R LO 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20220529160247 2022-05-29 16:02:48 1) Name of the substation and Time: At 15:42 HRS 400KV Mundka 2) Name of element tripped/restored: 400KV Mundka-bawana ckt-II 3) Relay Annunciation: Relay bawana-186A and B,Trip A phase,Zone-I trip ,Distance 10.95KM, Ia 18.22KA, Ib 836.9 A, Ic748.9A, In 18.25KA Mundka Relay R-phase trip zone-I,Distance 7.71KM, Ia 16.79 KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220529143509 2022-05-29 14:35:10 1) Name of the substation and Time: At 14:31HRS, 400KV Mundka 2) Name of element tripped/restored: 400KV Mundka-Bawana ckt-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Ckt tried once held/Charged and load shared 6) Any other relevant information: - Regards, Delhi SLDC 20220529142121 2022-05-29 14:21:22 1) Name of the substation and Time: AT 13:29 HRs 400KV Mundka 2) Name of element tripped/restored: 400KV Munka-Bawana-II 3) Relay Annunciation: Tripping bawana-II Relay bawana-186A and B,Trip A phase,Zone-I trip ,Distance 11.07KM,Ia 18.19KA,Ib827.2A,Ic761.9A,In18.20KA Mundka Relay R-phase trip zone-I,Distance 7.83KM,Ia 16.35KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220528112732 2022-05-28 11:27:33 1) Name of the substation and Time: 400kV Harsh Vihar 2) Name of element tripped/restored: 400kV Dadri ckt 1 charged at 10:45 and 400kV Dadri ckt 2 charged at 11:19 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220527213051 2022-05-27 21:30:52 1) Name of the substation and Time: At 400KV Harsh Vihar(20:42hrs) 2) Name of element tripped/restored: 400KV Dadri ckt -I and II 3) Relay Annunciation: On Dadri-I-(B phase, Z-I, 32.6KM)and on Dadri-II(B phase, Z-I,44KM) 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: 220KV B/C put On at 220KV Patparganj. 6) Any other relevant information: All load restored. Regards, Delhi SLDC 20220527152738 2022-05-27 15:27:39 1) Name of the substation and Time: CCGT Bawana 15:05Hrs 2) Name of element tripped/restored: 400KV Bhiwani ckt tripped from both the ends. No load was affected 3) Relay Annunciation: Relat at CCGT end are R-phase Z-1 Earth fault 70.4km 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220526122026 2022-05-26 12:20:27 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: 100MVA 220/66KV T/F-2 charged at no load at 11:36Hrs which was made off on dated 20/5/2022 due to high acetylene gas. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220525102158 2022-05-25 10:21:59 1) Name of the substation and Time: 400kV Bamnauli 10:05Hrs 2) Name of element tripped/restored: 500MVA ICT -3, Charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20220525065329 2022-05-25 06:53:30 1) Name of the substation and Time: At Bamnoli(06:08hrs) 2) Name of element tripped/restored: 500MVA, ICT-III 3) Relay Annunciation: OLTC, BUCHOLZ, 30E, B phase 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: No load was affected. 6) Any other relevant information: 220KV I/C -III also tripped. Regards, Delhi SLDC 20220524144750 2022-05-24 14:47:51 1) Name of the substation and Time: At 220 KV Vasant Kunj 2) Name of element tripped/restored: 100 MVA tr-I charged at 14:24 hrs and again tripped on PRV at 14:38 hrs. 3) Relay Annunciation: PRV 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: No Load affected. Regards, Delhi SLDC 20220524142432 2022-05-24 14:24:33 1) Name of the substation and Time: At 220 KV PPK-I 2) Name of element tripped/restored: 100 MVA tr-II charged at 14:12 hrs. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20220524123856 2022-05-24 12:38:57 1) Name of the substation and Time: At 220 KV RK Puram 2) Name of element tripped/restored: 100 MVA-II (220/33 kv) charged at 10:45 hrs 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20220524123704 2022-05-24 12:37:06 1) Name of the substation and Time: At 220 KV PPK-I,12:20 hrs 2) Name of element tripped/restored: 100 MVA tr-II tripped on Buchholz relay 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: No load affected Regards, Delhi SLDC 20220524120042 2022-05-24 12:00:44 1) Name of the substation and Time: At 220 KV Narela 2) Name of element tripped/restored: 100 MVA Tr-II made manually off due to heavy oil leakage in 66 KV, B phae bushing. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NO Load affected. Regards, Delhi SLDC 20220524084402 2022-05-24 08:44:03 1) Name of the substation and Time: Patparganj 07:30Hrs 2) Name of element tripped/restored: 220KV Preet Vihar ckt-I tripped on earth fault. CVT coming at Patparganj end. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220524064118 2022-05-24 06:41:19 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: 220KV Preet Vihar ckt-I charged at 05:30Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220524063959 2022-05-24 06:40:00 1) Name of the substation and Time: RK Puram 01:08Hrs 2) Name of element tripped/restored: 100MVA 220/33KV T/F-2 tripped on 86 oil surge alarm. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220524063542 2022-05-24 06:35:44 1) Name of the substation and Time: Vasant kunj 02:42Hrs 2) Name of element tripped/restored: 100MVA T/F-1 tripped on PRV. No load was affected 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220524001551 2022-05-24 00:15:52 1) Name of the substation and Time: Narela 23:47Hrs 2) Name of element tripped/restored: 220KV Panipat ckt-III tripped on B-phase Z-1. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: nan 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220524001401 2022-05-24 00:14:02 1) Name of the substation and Time: Patparganj 23:01Hrs 2) Name of element tripped/restored: 220KV Preet Vihar ckt-I tripped on earth fault. CVT coming at Patparganj end. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220522214744 2022-05-22 21:47:46 1) Name of the substation and Time: At 20:58 HRS 220KV Parkstreet 2) Name of element tripped/restored: 33KV I/c no-I and II energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 33KV I/c no-I and II energized and system normalised Regards, Delhi SLDC 20220522214529 2022-05-22 21:45:31 1) Name of the substation and Time: At 20:44 Hrs 220KV Park street 2) Name of element tripped/restored: 33KV I/c no-I and 33KV I/C No-II 3) Relay Annunciation: 33KV I/c no-I and II Relay O/c R,Y and B phase trip,86 4) Details of physically damaged equipment: This tripping occured due to monkey 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load affected approx 52 MW Normalised at 20:58 Hrs Regards, Delhi SLDC 20220521221525 2022-05-21 22:15:25 1) Name of the substation and Time: At 22:10HRs 220kV Dial 220kV Okhla 2) Name of element tripped/restored: Dial- BML Ckt2 charged Okhla-BTPS ckt2 charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20220521214104 2022-05-21 21:41:07 1) Name of the substation and Time: 220kV Naraina at 20:31 2) Name of element tripped/restored: 33kV Incomer of 100MVA Transformer No.1,2 and 3 tripped, Load shifted by Discom 3) Relay Annunciation: 33kV Incomer of Tr-1: E/F, 86 Tr-2: E/F, 86 Tr-3: O/C,E/F, 86 4) Details of physically damaged equipment: 33kV Incomer CB of 100MVA Tr No.3, Y-Phase pole damaged. 5) Immediate corrective/system normalization steps performed: Informed to S/stn staff to take corrective measure 6) Any other relevant information: 33kV Incomer of 100MVA Tr No.1 and 2 charged at 20:59Hrs Load Normalized Regards, Delhi SLDC 20220521200449 2022-05-21 20:04:49 1) Name of the substation and Time: At 400 KV Bawana:100 MVA tr charged at 19:56 hrs. 2) Name of element tripped/restored: NA 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20220521195025 2022-05-21 19:50:26 1) Name of the substation and Time: at 22o kv BTPS 2) Name of element tripped/restored: 220KV -BTPS-OKHLA-2 3) Relay Annunciation: 86,Z-2,B PH,5.6KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20220521194756 2022-05-21 19:47:57 1) Name of the substation and Time: at 400KV BML 2) Name of element tripped/restored: 220 kv Dail-BML-CKT-2 3) Relay Annunciation: 186 AB,Y PH, ZONE-1,2.7KM,17 KA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: no load effected Regards, Delhi SLDC 20220521191903 2022-05-21 19:19:06 1) Name of the substation and Time: 220kV Dial 18:53HRs 2) Name of element tripped/restored: 220kV BML-Dial ckt II 3) Relay Annunciation: Dial: Z-II, Y-Ph BML: Z-I, Y-PH, 2.7KM, 17KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to S/stn staff to ckeck the ckt 6) Any other relevant information: Nil Regards, Delhi SLDC 20220521184557 2022-05-21 18:45:58 1) Name of the substation and Time: 400kV Bawana time 18:21HRs 2) Name of element tripped/restored: 100MVA Tr along with 66kV In/comer 3) Relay Annunciation: Diffrential and LV- REF, 86A,B 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Informed to S/stn Staff to check the transformer 6) Any other relevant information: NIL Regards, Delhi SLDC 20220521135803 2022-05-21 13:58:04 1) Name of the substation and Time: At 13:14 HRs 220KV Parkstreet 2) Name of element tripped/restored: Restored 66KV I/c-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: All feeders shifted on bus-I Regards, Delhi SLDC 20220521135509 2022-05-21 13:55:10 1) Name of the substation and Time: At 12:46 HRS 220KV Parkstreet 2) Name of element tripped/restored: 66KV I/C-I 3) Relay Annunciation: 86,O/C Y-phase 4) Details of physically damaged equipment: (Conducter broken and fell on the ground) 5) Immediate corrective/system normalization steps performed: All feeder shifted to Bus-I and Energized all feeders at 13:14 HRS 6) Any other relevant information: At 13:14 HRS system normalised Approx 74MW load affected Regards, Delhi SLDC 20220521125916 2022-05-21 12:59:17 1) Name of the substation and Time: At 11:22 HRS 220KV Naraina 2) Name of element tripped/restored: 100MVA-3 with 66KV-I/C-3 and I/C-2 tripped 3) Relay Annunciation: Relay 86,O/C R,Y and b phase 4) Details of physically damaged equipment: 33KV kibri place-II CT Breaker damaged and jumper broken touching to bus-II 5) Immediate corrective/system normalization steps performed: Load shifted to Bus-I and 66KV I/C-3 breaker problem 6) Any other relevant information: Approx load affected 87 MW Regards, Delhi SLDC 20220521004938 2022-05-21 00:49:39 1) Name of the substation and Time: Sarita Vihar 00:27Hrs 2) Name of element tripped/restored: 220KV Pragati ckt tripped. 3) Relay Annunciation: Relay at Sarita Vihar end are Z-1 B-phase 2.28km fault current 23.49KA. Relay at Pragati end are Z-2 C-phase 13.04km fault current 8.36KA. No load was affected. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220520230230 2022-05-20 23:02:30 1) Name of the substation and Time: Rohini-1 2) Name of element tripped/restored: 220KV Shalimar Bagh ckt-II charged at 22:58Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220520230015 2022-05-20 23:00:16 1) Name of the substation and Time: Rohini-1 21:35Hrs 2) Name of element tripped/restored: 220KV Shalimar Bagh ckt-II tripped on B-phase differential trip. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220520225608 2022-05-20 22:56:09 1) Name of the substation and Time: Rohini-1 21:35Hrs 2) Name of element tripped/restored: 220KV Shalimar Bagh ckt-II tripped on B-phase differential trip. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220520225336 2022-05-20 22:53:37 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: 220KV Mandaula ckt-II tripped at Mandaula end at 22:31Hrs. 3) Relay Annunciation: Relay at Mandaula end are B-phase 12.38km fault current 11.16KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Load affected was 140MW. Load normalised through 220KV SOW ckt-I at 22:35Hrs. 6) Any other relevant information: na Regards, Delhi SLDC 20220520225152 2022-05-20 22:51:53 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: 220KV Mandaula ckt-II tripped at Mandaula end at 22:31Hrs. 3) Relay Annunciation: Relay at Mandaula end are B-phase 12.38km fault current 11.16KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Load affected was 140MW. Load normalised through 220KV SOW ckt-I at 22:35Hrs. 6) Any other relevant information: na Regards, Delhi SLDC 20220520212726 2022-05-20 21:27:26 1) Name of the substation and Time: Bamnauli 2) Name of element tripped/restored: 220KV Dial ckt-II charged at 20:04Hrs and load taken at 20:44Hrs and ckt again tripped at 20:49Hrs. 3) Relay Annunciation: Relay at Bamnauli end Z-1 B-phase 2.2km fault current 17.34KA. Relay at Dial end are Y-phase Z-2 general trip fuse fail. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: 220KV Mehrauli-Dial ckt-II closed 6) Any other relevant information: na Regards, Delhi SLDC 20220520212245 2022-05-20 21:22:46 1) Name of the substation and Time: Bamnauli 2) Name of element tripped/restored: 220KV Najafgarh ckt-I charged at 19:42Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220520193400 2022-05-20 19:34:00 1) Name of the substation and Time: Bamnauli 18:57Hrs. 2) Name of element tripped/restored: Najafgarh ckt-I 3) Relay Annunciation: Relay at Bamnauli end are R-phase Z-2 8.6km fault current 7.8KA. Relay at Najafgarh end are RYB-phase Z-1. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: No load was affected Regards, Delhi SLDC 20220520193023 2022-05-20 19:30:30 1) Name of the substation and Time: Dial 18:55Hrs 2) Name of element tripped/restored: Bamnauli ckt-II 3) Relay Annunciation: Relay at Dial end are YB-phase Z-2 general trip. Relay at Bamnauli end are B-phase Z-1 2.59km fault current 17.5KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Mehrauli-Dial ckt-II closed. 6) Any other relevant information: No load was affected Regards, Delhi SLDC 20220520130148 2022-05-20 13:01:49 1) Name of the substation and Time: At 12:55 HRS 220 KV Sarita vihar 2) Name of element tripped/restored: 220KV SVR-MBG CKT 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: CKT Energized at 12:55HRS Regards, Delhi SLDC 20220520062056 2022-05-20 06:20:57 1) Name of the substation and Time: At 220KV Rajghat(05:19hrs) 2) Name of element tripped/restored: 33KV I/c-I, 33KV I/C-II and 33KV B/C 3) Relay Annunciation: 33KV I/C-I and II on O/C ,E/F ,B phase while B/C on W/I. 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load till clearance from grid. 6) Any other relevant information: Monkey found electrocuted in the yard. Regards, Delhi SLDC 20220519163210 2022-05-19 16:32:11 1) Name of the substation and Time: Sarita Vihar 16:08Hrs 2) Name of element tripped/restored: 220KV Maharani Bagh ckt tripped on C-phase Z-1 4.5km, fault current 4KA. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220517194233 2022-05-17 19:42:34 1) Name of the substation and Time: At 19:40 HRS 400KV MBG 2) Name of element tripped/restored: 220KV SVR MBG CKT Energized 3) Relay Annunciation: -- 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220517190610 2022-05-17 19:06:11 1) Name of the substation and Time: At 18:46 Hrs 400KV Maharani bagh 2) Name of element tripped/restored: 220KV SVR ckt 3) Relay Annunciation: SVR-Trip zone-I,Trip b,c phase distance 8.5 KM,Ia 70.11A,Ib 2.149KA,Ic2.137KA In 35.06A MBG Trip L1L2 Distance 2.4KM L1-0A L218KA and l318KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Noload affected Regards, Delhi SLDC 20220517120214 2022-05-17 12:02:15 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Data of the following stations are not updating :220 KV Peeragarhi,220 KV Trama centre,220 Kv Rohini-II 220 KV Wazirpur,220 KV IP lines data and 315 MVA ICT-II at Bawana 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20220515233950 2022-05-15 23:39:51 1) Name of the substation and Time: Harsh Vihar 2) Name of element tripped/restored: 400KV Dadri ckt-I charged at 23:25Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220515223539 2022-05-15 22:35:40 1) Name of the substation and Time: Harsh Vihar 21:26Hrs 2) Name of element tripped/restored: 400KV Dadri ckt-I tripped on general trip RYB phase 0.1km Z-1 fault current 10.65KA SOTF. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220515192509 2022-05-15 19:25:09 1) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: 220KV Okhla ckt-I charged at 19:23Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220515191346 2022-05-15 19:13:46 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: 220KV DSIDC ckt-I charged at 19:05Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220515181639 2022-05-15 18:16:40 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: 220KV Mandaula ckt-I charged at 17:51Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220515181141 2022-05-15 18:11:42 1) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: 220KV Mehrauli ckt-II charged at 17:51Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220515170952 2022-05-15 17:09:52 1) Name of the substation and Time: At 220KV Narela(14:20hrs) 2) Name of element tripped/restored: 220KV DSIIDC ckt-I 3) Relay Annunciation: R phase ,Zone-I 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: Patrolling underway. 6) Any other relevant information: circuit was charged at No load from Narela end. Regards, Delhi SLDC 20220515170536 2022-05-15 17:05:37 1) Name of the substation and Time: At 220KV Tughlakabad(14:46hrs) 2) Name of element tripped/restored: 220KV Okhla ckt-I 3) Relay Annunciation: Y and B phase trip(24KA fault), 3.8KM distance. 4) Details of physically damaged equipment: None reported by grid staff. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Okhla and load normalized on BTPS ckts. 6) Any other relevant information: 220KV Tughlakabad ckt-II is already out since yesterday. Regards, Delhi SLDC 20220515170052 2022-05-15 17:00:53 1) Name of the substation and Time: At Tughlakabad(14:01hrs) 2) Name of element tripped/restored: 220KV Mehrauli ckt-II 3) Relay Annunciation: R phase,12.82KA fault, 9 KM distance. 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: BSES asked to C/O their load. 6) Any other relevant information: Partial load of 220KV Mehrauli and Vasant Kunj station was affected. Line Patrolling underway. Regards, Delhi SLDC 20220515151917 2022-05-15 15:19:18 1) Name of the substation and Time: gopalpur 13:23 hrs 2) Name of element tripped/restored: supply failed from mandola on 220 kV mandola 1 3) Relay Annunciation: distance protection at mandola end 4) Details of physically damaged equipment: none reported 5) Immediate corrective/system normalization steps performed: load taken on SoW -2 6) Any other relevant information: line being patrolled Regards, Delhi SLDC 20220514230039 2022-05-14 23:00:40 1) Name of the substation and Time: At22:50 HRS 220KV Parkstreet 2) Name of element tripped/restored: 100MVA-I with 66KV I/C No-I energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220514195122 2022-05-14 19:51:23 1) Name of the substation and Time: At 18:02 HRS 220KV Parkstreet 2) Name of element tripped/restored: 100MVA-I with 66KV I/C No-I and 66KV I/C No-II 3) Relay Annunciation: 100MVA-I O/C and E/F 66Kvi/C-II intertripping 4) Details of physically damaged equipment: 66KV Buscoupler B-phase CT Damaged/burnt 5) Immediate corrective/system normalization steps performed: At 18:54 Hrs 66KV I/C-II charged 6) Any other relevant information: approx 100MW Load affected. Maintenanace team will test 100MVa-I transformer Regards, Delhi SLDC 20220514172538 2022-05-14 17:25:39 1) Name of the substation and Time: At 17:00Hrs,220 KV Tunglakabad 2) Name of element tripped/restored: 220 Kv Okhla-Tugb ckt-I Restored 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220514142359 2022-05-14 14:24:01 1) Name of the substation and Time: tughlakabad @13:29 2) Name of element tripped/restored: okhla ckt 1 and 2 3) Relay Annunciation: distance protection 4) Details of physically damaged equipment: none reported by O and M 5) Immediate corrective/system normalization steps performed: Okhla Load taken on BTPS by closing bus coupler 6) Any other relevant information: 100 MW Regards, Delhi SLDC 20220513160812 2022-05-13 16:08:20 1) Name of the substation and Time: 220kV Pappankalan 2 at 15:55hrs 2) Name of element tripped/restored: 220kV Bamnauli ckt 2 normalized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220513133054 2022-05-13 13:30:56 1) Name of the substation and Time: At 400kV Bamnauli 12:58 Hrs 2) Name of element tripped/restored: 220kV Pappankalan 2 ckt 2 at Bamnoli end only 3) Relay Annunciation: Z-1, 8.6km, 8.9kA R Ph. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220kV B/C put on at 13:07 hrs at PPK-2 6) Any other relevant information: 85MW load effected. Delayed normalization due to communication failure. Lne being patrolled. Regards, Delhi SLDC 20220510214728 2022-05-10 21:47:29 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Data of the following station are not updating : 1) 220 KV Masjid Moth, 2)Trama center, 3) Peeragarhi 4) Rohini-II 5) Wazirpur. 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20220510203235 2022-05-10 20:32:35 1) Name of the substation and Time: 220kV SOW 20:28 HRs 2) Name of element tripped/restored: SOW-MAnadaula ckt-1 charged 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20220510190318 2022-05-10 19:03:19 1) Name of the substation and Time: 220kV SOW 18:56 2) Name of element tripped/restored: 220kV SOW-Mandaula Ckt 3 charged 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20220510184814 2022-05-10 18:48:15 1) Name of the substation and Time: 220kV Kanjhawal 18:42 HRs 2) Name of element tripped/restored: 20MVA Tr NO.1 charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20220510184715 2022-05-10 18:47:15 1) Name of the substation and Time: 220kV Kanjhawal 18:42 HRs 2) Name of element tripped/restored: 20MVA Tr NO.1 charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20220510182712 2022-05-10 18:27:14 1) Name of the substation and Time: 220kV SOW, 18:06HRs 2) Name of element tripped/restored: 220kV SOW-Mandaula ckt 1 and ckt 3 3) Relay Annunciation: SOW-Mandaula ckt1, at SOW- Y-B Ph, Distance Z1 A/R Lockout, 2.741 Km, 86ABC. At Mandaula- Y-B Phase, 11.00Km, No Indication at SOW-Mandaula ckt 3 at both ends, only CB from Mandaula end tripped, CB at SOW end is in ON position 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: SOW staff is informed to check the ckt and give clearance 6) Any other relevant information: Nil Regards, Delhi SLDC 20220510122748 2022-05-10 12:27:48 1) Name of the substation and Time: Kanjhawala 2) Name of element tripped/restored: 20MVA T/F-1 tripped on RYB differential at 11:48Hrs. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220510114433 2022-05-10 11:44:34 1) Name of the substation and Time: Test Message. Please Ignore 2) Name of element tripped/restored: Test Message. Please Ignore 3) Relay Annunciation: Test Message. Please Ignore 4) Details of physically damaged equipment: Test Message. Please Ignore 5) Immediate corrective/system normalization steps performed: Test Message. Please Ignore 6) Any other relevant information: Test Message. Please Ignore Regards, Delhi SLDC 20220509101941 2022-05-09 10:19:42 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Data of the following station are not updating from last few days: 2) 220 KV Masjid Moth,Trama center,Peeragarhi. 3) na 4) nan 5) na 6) na Regards, Delhi SLDC 20220508232503 2022-05-08 23:25:03 1) Name of the substation and Time: IP, 19:05 2) Name of element tripped/restored: 33 kV Incomer 1 and 2 3) Relay Annunciation: EF 4) Details of physically damaged equipment: Bay 10 5) Immediate corrective/system normalization steps performed: . 6) Any other relevant information: 33 kV Bay 10 still being attended by DTL maintenance Regards, Delhi SLDC 20220508202303 2022-05-08 20:23:04 1) Name of the substation and Time: 220 kV IP at 18:35 hrs 2) Name of element tripped/restored: 33 kV incomer 1 and 2, 3) Relay Annunciation: EF 4) Details of physically damaged equipment: B phase insulator disc of 33 kV Bay 10, EL, East Bus damaged 5) Immediate corrective/system normalization steps performed: immediate load loss of about 100 MW 6) Any other relevant information: monkey electrocuted at Bay 10. Regards, Delhi SLDC 20220505154921 2022-05-05 15:49:22 1) Name of the substation and Time: At 400kV Bawana at 12:24 Hrs 2) Name of element tripped/restored: CGL Make 315MVA ICT 2 energized on no load 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220504184340 2022-05-04 18:43:41 1) Name of the substation and Time: Bawana 2) Name of element tripped/restored: 220KV DSIDC ckt-I charged at 17:40Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220504153742 2022-05-04 15:37:43 1) Name of the substation and Time: 400KV BAWANA 14.20 2) Name of element tripped/restored: 220KV DSIDC CKT-1 and 2 3) Relay Annunciation: 220KV DSIDC BAWANA CKT-1 ZONE 1 ,RYB PH TRIP,DIS OPTD,FALUT LOCATION 4.36 KM ,ia=12.53 ka, ib=12.2 ka ic=404.7 amp 220KV DSIDC BAWANA CKT-2 ZONE 1 ,RYB PH TRIP,DIS OPTD,FALUT LOCATION 40KM IA=508 AMP,IB=6.035 KA ,IC 5.85 KA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 220KV NARELA CKT-1 and 2 MADE ON AND SUPPLY RESTORED 6) Any other relevant information: 160 MW EFFECTED FOR 15 MINT. Regards, Delhi SLDC 20220503104049 2022-05-03 10:40:50 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: 160MVA T/F-4 tripped without indication at 10:01Hrs. Load affected was 49MW, discoms had shifted their load. At 10:16Hrs 160MVA T/F-4 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220503103703 2022-05-03 10:37:03 1) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: 100MVA T/F-2 charged at 10:20Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220503103406 2022-05-03 10:34:07 1) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: 100MVA T/F-2 charged at 10:20Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220503095258 2022-05-03 09:52:59 1) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: 100MVA T/F-2 tripped on buchholz relay at 09:22Hrs. Load affected was 18MW. Load normalised through 33KV B/C at 09:27Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220501120608 2022-05-01 12:06:09 1) Name of the substation and Time: 220kV Maharani bagh 12:02Hrs 2) Name of element tripped/restored: Maharanibagh- Gazipur ckt 2 charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20220501110243 2022-05-01 11:02:44 1) Name of the substation and Time: 220kV Maharani bagh at 10:43 AM 2) Name of element tripped/restored: 220kV Maharani bagh- Gazipur ckt-II 3) Relay Annunciation: B-Phase Differential 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Conveyed to 220kV S/stn staff to check the ckt and give clearance if ckt found ok 6) Any other relevant information: Nil Regards, Delhi SLDC 20220429170739 2022-04-29 17:07:40 1) Name of the substation and Time: At Harsh Vihar(16:58hrs) 2) Name of element tripped/restored: 400KV Dadri-II 3) Relay Annunciation: R-N phase fault at Dadri end. 4) Details of physically damaged equipment: None. 5) Immediate corrective/system normalization steps performed: System was already restored. 6) Any other relevant information: ICT-III was energized at 16:12hrs.(It was erroneously reported to be 15:55 in earlier message). Regards, Delhi SLDC 20220429170147 2022-04-29 17:01:47 1) Name of the substation and Time: At Harsh Vihar(15:22hrs). 2) Name of element tripped/restored: 400KV Dadri-I 3) Relay Annunciation: E/F , B phase, D/P ,4.10KM at Dadri end. 4) Details of physically damaged equipment: None. 5) Immediate corrective/system normalization steps performed: Circuit restored after supply fron Dadri received. 6) Any other relevant information: 400KV B/C at Harsh Vihar was normalized simultaneously. ICT-III normalized at 15:55hrs. Regards, Delhi SLDC 20220429165343 2022-04-29 16:53:44 1) Name of the substation and Time: At Harsh Vihar(14:43hrs) 2) Name of element tripped/restored: Supply from 400KV Dardri-II failed. Earlier supply from Dadri -I had failed at 14:28hrs. 3) Relay Annunciation: Supply fail from Dadri.Breakers of Dadri I and II didnt trip at Harsh Vihar station. 4) Details of physically damaged equipment: None. 5) Immediate corrective/system normalization steps performed: 220Kv Gazipur ckt put ON and load of Patparganj station restored. Load of Harsh Vihar and Preet Vihar station were C/O by BSES. 6) Any other relevant information: Dadri-Harsh Vihar Ckts were feeding Preet Vihar and Patparganj station at the time of tripping. Simultaneously 400KV B/C and ICT-III had tripped at Harsh Vihar (14:43hrs). Regards, Delhi SLDC 20220428193303 2022-04-28 19:33:04 1) Name of the substation and Time: At 17:20HRS ,400KV MUNDKA 2) Name of element tripped/restored: 315 MVA-ICT-IV 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 315 MVA-ICT-IV energised at 17:20HRS Regards, Delhi SLDC 20220427212624 2022-04-27 21:26:25 1) Name of the substation and Time: 220kV SGTN at 16:45Hrs 2) Name of element tripped/restored: 160MVA Tr no. 1, manually switched off by S/stn staff 3) Relay Annunciation: Low gas pressure in BPI-III at 66kV In comer No.1, Line Isolator 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Check the gas pressure and take necessary action 6) Any other relevant information: NIL Regards, Delhi SLDC 20220427073520 2022-04-27 07:35:21 1) Name of the substation and Time: Patparganj 06:50Hrs 2) Name of element tripped/restored: 100MVA 220/66KV T/F-1 tripped without indication. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220427073319 2022-04-27 07:33:20 1) Name of the substation and Time: Naraina 2) Name of element tripped/restored: 33KV I/C-2 and 33KV I/C-3 tripped on O/C B=phase E/F at 05:22Hrs. Grid staff had reported fire in 33KV Bus-II B-phase cable extension. Load affected was 65MW. Discoms had shifted their load. At 06:40Hrs 33KV I/C-3 and 33KV feeders charged on 33KV Bus-I. At 07:08Hrs 33KV I/C-2 charged. Presently 33KV Bus-II is out 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220427073234 2022-04-27 07:32:35 1) Name of the substation and Time: Naraina 2) Name of element tripped/restored: 33KV I/C-2 and 33KV I/C-3 tripped on O/C B=phase E/F at 05:22Hrs. Grid staff had reported fire in 33KV Bus-II B-phase cable extension. Load affected was 65MW. Discoms had shifted their load. At 06:40Hrs 33KV I/C-3 and 33KV feeders charged on 33KV Bus-I. At 07:08Hrs 33KV I/C-2 charged. Presently 33KV Bus-II is out 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220426133339 2022-04-26 13:33:40 1) Name of the substation and Time: 11:31 at 220kV PPG 2) Name of element tripped/restored: 220kV IP-1 and 2, 220kV Geeta Colony -1 and 2, 220kV Preet Vihar -1 and 2, 100MVA (220/66kV) Tx 2 3) Relay Annunciation: Bus Bar Protection. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Partial load normalised through Pragati bus coupler 6) Any other relevant information: Suppply fail at IP, RPH, Pragati Bus-2 and Park Street 66kV. Load Loss 430 MW approx and generation loss 270 MW approx. EVentually Load normalised by 11:58Hrs and system normalised by 12:05 Hrs. Generation being brought up on bar. Regards, Delhi SLDC 20220426105218 2022-04-26 10:52:19 1) Name of the substation and Time: At 220kV lodhi Road 09:07 Hrs 2) Name of element tripped/restored: 220kV Maharanibagh ckt 2 normalized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220426082801 2022-04-26 08:28:02 1) Name of the substation and Time: At Maharani Bagh(22:02hrs) 2) Name of element tripped/restored: 220KV Lodi Road ckt-II 3) Relay Annunciation: Zone-1, 2.4KM, (L3)21.18KA fault current. 4) Details of physically damaged equipment: Not known yet. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Lodi Road end. 6) Any other relevant information: Supply fail at Lodi Road end. Regards, Delhi SLDC 20220426012027 2022-04-26 01:20:28 1) Name of the substation and Time: At Vasant Kunj(22:57hrs) 2) Name of element tripped/restored: 100MVA-I(220/66KV) transformer. 3) Relay Annunciation: 96 bus bar protection 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: 160MVA transformer taken on Load. 6) Any other relevant information: However No load was affected. Regards, Delhi SLDC 20220426011653 2022-04-26 01:16:53 1) Name of the substation and Time: At Bamnauli(23:40hrs) 2) Name of element tripped/restored: 220KV Dial ckt-II 3) Relay Annunciation: Zone-I, B phase, 17.69KA fault. 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: 220KV Vasant Kunj-RK Puram ckt-II put ON in case of tripping of Bamnauli-DIAL ckt-I. 6) Any other relevant information: ckt tried from Bamnauli end , held OK. Regards, Delhi SLDC 20220426011258 2022-04-26 01:13:00 1) Name of the substation and Time: AT Tughlakabad(22:50hrs) 2) Name of element tripped/restored: 220KV Mehrauli-II 3) Relay Annunciation: D/P R and Y phase trip, 14KA fault. 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: load C/O by BSES,B/C put ON at Vasant Kunj 6) Any other relevant information: Ckt tried from Tughlakabad end after patrolling. Regards, Delhi SLDC 20220425221812 2022-04-25 22:18:13 1) Name of the substation and Time: BAMNAULI 21:24 2) Name of element tripped/restored: DIAL2 3) Relay Annunciation: DP Z1 2.627 km B-Ph 17.69 kA 4) Details of physically damaged equipment: NONE REPORTED 5) Immediate corrective/system normalization steps performed: NO LOAD AFFECTED 6) Any other relevant information: STRONG WINDS REPORTED Regards, Delhi SLDC 20220425212717 2022-04-25 21:27:17 1) Name of the substation and Time: At 220KV Tughlakabad(20:37hrs) 2) Name of element tripped/restored: 220KV Mehrauli-II 3) Relay Annunciation: Zone-II, R and Y phase trip, 10.10KM, and 14.22KA fault. 4) Details of physically damaged equipment: NOT KNOWN YET. 5) Immediate corrective/system normalization steps performed: BSES ASKED TO C/O LOAD. 220kV B/C PUT ON AT VASANT KUNJ STATION. 66KV FATEHPUR BERI-I C/O AT MEHRAULI STATION. 6) Any other relevant information: 220KV Bus-II at Mehrauli still out. Due to protection issues at 220KV Mehrauli station ,Supply from DIAL avoided at Mehrauli . Regards, Delhi SLDC 20220424225029 2022-04-24 22:50:32 1) Name of the substation and Time: 220kV Lodhi Road 22:05Hrs 2) Name of element tripped/restored: 100MVA TR NO.1 Tripped, 49MW Load affect for 7 Min 3) Relay Annunciation: Diff R,Y,B REF HV side, 86A, 33kV In Comer 86 A and B 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed Discom to shift load 6) Any other relevant information: Nil Regards, Delhi SLDC 20220424160402 2022-04-24 16:04:04 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 13:09Hrs 160MVA T/F-4 charged. At 14:23Hrs 100MVA T/F-1 and 100MVA T/F-3 charged. At 14:30Hrs 100MVA T/F-2 charged and presently no load is affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220424122251 2022-04-24 12:22:54 1) Name of the substation and Time: Mehrauli 10:42Hrs 2) Name of element tripped/restored: 160MVA T/F-4 tripped on 86. 66KV I/C-4 and 66KV I/C-2 tripped on O/C Y-phase. Grid staff have reported blast and fire in Y-phase CT of 66KV C-2. Load affected was approx 100MW. All outgoing feeder have been made off to control the fire on 66KV side and discoms have shifted their load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220424081720 2022-04-24 08:17:21 1) Name of the substation and Time: At08:07HRS,PPK-II 2) Name of element tripped/restored: 220KV Bamnauli-ckt-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV CB of bamnauli ckt-I closed held o.k and 220KV Buscoupler off Regards, Delhi SLDC 20220424065510 2022-04-24 06:55:11 1) Name of the substation and Time: At 05:41 HRS , 220KV PPK-II 2) Name of element tripped/restored: 220KV Bamnauli ckt-I 3) Relay Annunciation: Bamnauli-186A and B,86T, Main-I Zone-I Distance 5.9KM,IB-13.65KA PPK-II Main-I B and N Trip,zone-I distance 6.4 KM main-II R and Y PH TRIP ,86A 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 05:43 hrs, 220KV Buscoupler closed at PPK-II Load normalised 6) Any other relevant information: At 06:11 HRS Tried to close at Bamnauli end held OK and Circuit Breaker didnot close at PPK-II due to P/D relay operated Regards, Delhi SLDC 20220420000833 2022-04-20 00:08:34 1) Name of the substation and Time: At 220 KV Sarita Vihar 2) Name of element tripped/restored: 220 KV Maharani bagh ckt charged at 00:05 hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220419212935 2022-04-19 21:29:36 1) Name of the substation and Time: 220kV Sarita Vihar, 21:24HRs 2) Name of element tripped/restored: 220kV Sarita vihar-Maharanibagh ckt 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Sparking reported by local residents near tower no.30 5) Immediate corrective/system normalization steps performed: 220kV Sarita vihar- Maharanibagh ckt switched off 6) Any other relevant information: Informed to concerned DGM and Manager to look into this matter Regards, Delhi SLDC 20220415230619 2022-04-15 23:06:20 1) Name of the substation and Time: 22:28Hrs 220 KV Geeta Colony S/Stn 2) Name of element tripped/restored: 100 P.Tr. NO-1 3) Relay Annunciation: - 4) Details of physically damaged equipment: Removed the kite thread on 220 KV Bus-II 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Total System Normlised at 220 Geeta Colony S/Stn Regards, Delhi SLDC 20220415204028 2022-04-15 20:40:29 1) Name of the substation and Time: At 19:45 HRS,220KV RPH 2) Name of element tripped/restored: 220KV IP ckt -I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 19:45 HRS ckt normalised 6) Any other relevant information: -system is normal at RPH Regards, Delhi SLDC 20220415203803 2022-04-15 20:38:04 1) Name of the substation and Time: At:18:40 HRS,220KV RPH 2) Name of element tripped/restored: 220KV IP Ckt-I 3) Relay Annunciation: 86A,B,C and 186X and Distance zone-I 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: AT 18:45 HRS 33KV Bus coupler closed load normalised. Approx 37MW Load affected 6) Any other relevant information: - Regards, Delhi SLDC 20220415203335 2022-04-15 20:33:36 1) Name of the substation and Time: At 18:40 HRS,220KV Geeta Colony 2) Name of element tripped/restored: 220KV SOW-Ckt-I,220KV BUS COUPLER,220KV PPG-I,100MVA-I 3) Relay Annunciation: Main-I BUS BAR OPERATED 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 18:57 HRS 33KV BUS COUPLER closed load Normalised,approx 40MW load affected 19:10 220Kv Bus coupler closed 19:20 220KV SOW-I closed 19:24 PPG-I closed 6) Any other relevant information: System is normal except 100MVA-I Regards, Delhi SLDC 20220415001459 2022-04-15 00:15:00 1) Name of the substation and Time: bamnauli 23:36 2) Name of element tripped/restored: najafgarh 1 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: as per request of maintenance, load to be taken in the morning Regards, Delhi SLDC 20220414200942 2022-04-14 20:09:43 1) Name of the substation and Time: At 220KV Najafgarh(19:28hrs) 2) Name of element tripped/restored: 220KV Bamnauli-I 3) Relay Annunciation: R phase, D/P. 4) Details of physically damaged equipment: No damage but tripped with sparking and heavy sound. 5) Immediate corrective/system normalization steps performed: Load taken on 220KV Mundka ckt. 6) Any other relevant information: Both end tripping. Regards, Delhi SLDC 20220412192117 2022-04-12 19:21:18 1) Name of the substation and Time: 220kV Masjid Moth at 17:55 Hrs 2) Name of element tripped/restored: 33kV I/c 3 tripped on 86. 33kV Balaji Yph CT blast but ckt didnot trip 3) Relay Annunciation: - 4) Details of physically damaged equipment: 33kV Balaji Yph CT blast 5) Immediate corrective/system normalization steps performed: Load Shifted by Discom by 18:04 as Grid staff was busy dousing fire. 33kV B/C put on at 18:15 Hrs. 6) Any other relevant information: 64MW load effected which was normalized by BRPL by 18:04 Hrs. I/C 3 closed at 19:00 Hrs. Regards, Delhi SLDC 20220411142706 2022-04-11 14:27:07 1) Name of the substation and Time: 220kV DIAL 2) Name of element tripped/restored: 220kV Bamnauli ckt 1 3) Relay Annunciation: At 220kV DIAL, 220kV Bamnauli 1 tripped on Rph, z-2, 86, Ir=1.1kA, At Bamnauli end: Z-2, Rph, 135.7km, 186AB, Ir=64.8A. 4) Details of physically damaged equipment: Fault led to tripping of 220kV Bamnauli 1 and 2 At Najafgarh 5) Immediate corrective/system normalization steps performed: ckt tried from Bamnauli at 14:08 Held ok 6) Any other relevant information: no load effected at DIAL. Regards, Delhi SLDC 20220411142247 2022-04-11 14:22:48 1) Name of the substation and Time: 13:37, 220kV Najafgarh 2) Name of element tripped/restored: 220kV Bamnauli 1 and 2, Lines remained charged at Bamnauli end. 3) Relay Annunciation: Tripped by BCU on Voltage fluctuation. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Both ckts closed at 13:40 Hrs 6) Any other relevant information: effecting 160MW load at Najafgarh. Regards, Delhi SLDC 20220411134102 2022-04-11 13:41:03 1) Name of the substation and Time: 220kV Narela 2) Name of element tripped/restored: 220kV Mandola ckt 1 3) Relay Annunciation: At Narela end: R ph distance trip. Main 86A relay burnt . At Mandola end: R-E fault, Ir=7.1kA, dist 15.6km 4) Details of physically damaged equipment: Main 86A relay burnt 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: no load effected Regards, Delhi SLDC 20220410223049 2022-04-10 22:30:50 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 20:48Hrs 100MVA T/F-1 tripped on O/C R and B-phase, 66KV I/C-2 and 66KV I/C-3 tripped without indication. Load affected was approx. 140MW. At 21:08Hrs 66KV I/C-2 and 66KV I/C-3 charged and load normalised. At 21:38Hrs 160MVA T/F-4 tripped on O/C Y-phase. At 22:00Hrs 160MVA T/F-4 charged At 22:04Hrs 100MVA T/F-1 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220410174306 2022-04-10 17:43:07 1) Name of the substation and Time: Kanjhawala 2) Name of element tripped/restored: 220KV Bawana ckt I and II charged at 17:38Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220410173923 2022-04-10 17:39:23 1) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: 220KV Mehrauli ckt-II charged at 17:26Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220410173659 2022-04-10 17:37:00 1) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: 220KV Mehrauli ckt-II charged at 17:26Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220410153545 2022-04-10 15:35:46 1) Name of the substation and Time: 14:47HRS and 14:48 HRS 400KV BAWANA 2) Name of element tripped/restored: 220KV KNJ CKTI and II tripped 3) Relay Annunciation: (KNJ-I-Relay R-Phase trip zone-I Distance trip zone-II R and B phase F/L 2.627km) (knj-II-Relay-Y and B phase trip zone-I f F/L-1.435 KM) 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: AT 14:55 HRS 220KV Buscoupler closed at KNJ and load taken on 220KV Mundka ckt load normalised... 6) Any other relevant information: - Regards, Delhi SLDC 20220410152740 2022-04-10 15:27:41 1) Name of the substation and Time: 13:24HRS,220KV TUGB 2) Name of element tripped/restored: 220KV Mehrauli ckt-II 3) Relay Annunciation: Rphase trip,zone-II,F/L 8.8KM,If 13.9KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 13:28HRS,220KV Buscoupler closed at 220KV Vasant KUNG station.220KV RKP ckt-II supply given and load taken 6) Any other relevant information: Mehrauli 160MVA transfred to TUGB-CKT-I.System normalised Regards, Delhi SLDC 20220409170243 2022-04-09 17:02:44 1) Name of the substation and Time: PPK-2 2) Name of element tripped/restored: 220KV Bamnauli ckt-I charged at 16:56Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220409135225 2022-04-09 13:52:26 1) Name of the substation and Time: PPK-2 2) Name of element tripped/restored: 220KV Bamnauli ckt-I tripped on YB-phase Z-1 differential at 13:22Hrs. Relay at Bamnauli end are YB-phase Z-1 5.09km fault current 12KA. Load affected was 100MW. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Load normalised through 220KV B/C at 13:25Hrs. 6) Any other relevant information: na Regards, Delhi SLDC 20220408230256 2022-04-08 23:02:57 SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Data of 220 Kv Peeragarhi and 220 KV Wazirpur is not updating. 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC 20220408184028 2022-04-08 18:40:29 1) Name of the substation and Time: at 220 KV Narela 2) Name of element tripped/restored: 220 KV Narela madola ckt-II charged at 17:56 hrs and ckt-I charged at 18:34 hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220408145843 2022-04-08 14:58:44 1) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: 220KV BTPS ckt-I charged at 10:58Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220408140823 2022-04-08 14:08:23 1) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 13:20Hrs 220KV Mandaula ckt-II tripped on C-phase 21.16km. At 13:40Hrs supply of 220KV Mandaula ckt-I failed. Load affected was 86MW. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Load normalised through 220KV Narela-DSIDC ckt-I and II at 13:47Hrs. 6) Any other relevant information: na Regards, Delhi SLDC 20220408065404 2022-04-08 06:54:05 1) Name of the substation and Time: At 05:38 HRS ,220KV Saritavihar 2) Name of element tripped/restored: 220KV BTPS ckt-I only at SVR end. 3) Relay Annunciation: Zone-I,trip phase Bn.F/L 120KM, Y and B phasse trip 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 06:47 HRS tried to close at SVR end but didnot hold. 6) Any other relevant information: - Regards, Delhi SLDC 20220407165516 2022-04-07 16:55:17 1) Name of the substation and Time: 220 KV NZF 2) Name of element tripped/restored: 220 NZF-BMLY ckt-I charged at 16:52 hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220407164709 2022-04-07 16:47:10 1) Name of the substation and Time: 220 KV Narela 2) Name of element tripped/restored: 220 KV Narela-MDL ckt-II charged at 16:26 hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220407155951 2022-04-07 15:59:52 1) Name of the substation and Time: At 220 KV NZF 2) Name of element tripped/restored: 220 KV BMLY-NZF Ckt-II charged at 15:17 hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220407145431 2022-04-07 14:54:32 1) Name of the substation and Time: 220KV NZF at 14:17 hrs 2) Name of element tripped/restored: 220 kv BMLY-NZF CKT- II TRIPPED ON DISTANCE PROT.ZONE-I 2.64 KM B PHASE FROM BMLY END.CKT CB REMAIN CLOSED FROM NZF. 220 KV BMLY-NZF CKT-I TRIPPED FROM NZF ON 86.CKT RAMAIN CHARGED FROM BAMLY END. 3) Relay Annunciation: DISTANCE 4) Details of physically damaged equipment: NONE REPORTED 5) Immediate corrective/system normalization steps performed: AT 14:30 HRS LOAD SHIFTED ON MUNDKA AND KANJHAWALA CKT. 6) Any other relevant information: PARTIALLY LOAD SHIFTED BY BSES.46 MW LOAD REMAIN AFFECTED FROM 14:17 HRS TO 14:30 HRS Regards, Delhi SLDC 20220407134055 2022-04-07 13:40:56 1) Name of the substation and Time: 220 KV Narela at 13:11 hrs 2) Name of element tripped/restored: 220 KV Mandola ckt-II tripped on distance prot. zone-I 7.70 km zone-I 3) Relay Annunciation: distance 4) Details of physically damaged equipment: none reported 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20220406161305 2022-04-06 16:13:06 1) Name of the substation and Time: At 220 KV Narela at 15:19 hrs. 2) Name of element tripped/restored: 220 KV Mandola ckt-II charged at 15:15 hrs.but ckt again tripped on distance prot. B phase,6.2 km. 3) Relay Annunciation: distance prot 4) Details of physically damaged equipment: None reported 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: No load affected Regards, Delhi SLDC 20220405140658 2022-04-05 14:06:59 1) Name of the substation and Time: At 13:23 hrs. 220 KV Narela 2) Name of element tripped/restored: 220KV Mandola ckt-2 3) Relay Annunciation: Dist. Prot,Zone-1 Dist 4.5 KM 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: NO load affected 6) Any other relevant information: CVT: NA Regards, Delhi SLDC 20220405135851 2022-04-05 13:58:51 1) Name of the substation and Time: 220 kv narela, @ 13:23 hrs 2) Name of element tripped/restored: 220 kv mandola ckt2 3) Relay Annunciation: Zone 1, 4.5 km, I(C) = 4 kA 4) Details of physically damaged equipment: none reported 5) Immediate corrective/system normalization steps performed: no load affected 6) Any other relevant information: CVT : NA Regards, Delhi SLDC 20220404163047 2022-04-04 16:30:48 1) Name of the substation and Time: At 15:00 hrs. 220KV Meharauli 2) Name of element tripped/restored: 66 KV I/Cs 1,2 and 3 3) Relay Annunciation: o/c b-phase 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: after fault analysis all kV 66 I/Cs made normal 6) Any other relevant information: 82 MW load affected for 10 Min. Regards, Delhi SLDC 20220404162202 2022-04-04 16:22:03 1) Name of the substation and Time: At 14:50 hrs. 220KV Meharauli 2) Name of element tripped/restored: 66 kv I/C-1,2 AND 3 3) Relay Annunciation: O/C B-PHASE 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: AT 15:00 hrs all I/Cs made on after fault analysis 6) Any other relevant information: none Regards, Delhi SLDC 20220402175155 2022-04-02 17:51:56 1) Name of the substation and Time: Bamnauli` 2) Name of element tripped/restored: 400KV Tughlakabad ckt-II charged at 17:48Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220402150621 2022-04-02 15:06:23 1) Name of the substation and Time: 400kV Harsh Vihar at 14:27 2) Name of element tripped/restored: 400kV Dadri ckt 2 3) Relay Annunciation: z-1, 41.3km, Y ph. E/F 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Line being Patrolled by NTPC Regards, Delhi SLDC 20220401152539 2022-04-01 15:25:40 1) Name of the substation and Time: Bamnauli 14:12Hrs. 2) Name of element tripped/restored: 500MVA ICT-3 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220401152247 2022-04-01 15:22:48 1) Name of the substation and Time: 220KV IP 12:37Hrs 2) Name of element tripped/restored: corrigendum At 12:37Hrs 220KV Patparganj ckt I and II tripped on distance relay Z-4 RYB-phase further due to this there was loss of generation at Pragati and Pragati-Pragati Street ckt-II tripped on distance relay line differential Z-1 B-phase. Grid staff of IP grid has reported thread on 220KV Bus I and II. Total load affected during this was approx 280MW of IP, Rajghat and Partstreet(only 66KV load) At 12:45Hrs 220KV B/C at Pragati closed and load of Park Street normalised. At 12:55Hrs 220KV Patparganj-IP ckt-I charged but tripped on DPR Z-4 RYB-phase. At 13:18Hrs 220KV Patparganj-IP ckt-II charged and load of IP normalised. At 13:37Hrs 220KV IP-Rajghat ckt I and II charged and load of Rajghat normalised. At 13:42Hrs 220KV Patparganj-IP ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220401151127 2022-04-01 15:11:27 1) Name of the substation and Time: 220KV IP 2) Name of element tripped/restored: At 12:37Hrs 220KV Patparganj ckt I and II tripped on distance relay Z-4 RYB-phase further due to this there was loss of generation at Pragati and Pragati-Pragati Street ckt-II tripped on distance relay line differential Z-1 B-phase. Grid staff of IP grid has reported thread on 220KV Bus I and II. Total load affected during this was approx 280MW (IP, Rajghat, Partstreet and GT) At 12:45Hrs 220KV B/C at Pragati closed and load of GT and Park Street normalised. At 12:55Hrs 220KV Patparganj-IP ckt-I charged but tripped on DPR Z-4 RYB-phase. At 13:18Hrs 220KV Patparganj-IP ckt-II charged and load of IP normalised. At 13:37Hrs 220KV IP-Rajghat ckt I and II charged and load of Rajghat normalised. At 13:42Hrs 220KV Patparganj-IP ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220401080809 2022-04-01 08:08:10 1) Name of the substation and Time: 400kV Bamnauli 18:41Hrs 31.03.2022, Radiator leakage Radiator leakage reported at 07.58 Hrs on 01.04.2022 2) Name of element tripped/restored: 500MVA ICT-III 3) Relay Annunciation: Tripped on O/C 86 A and B 4) Details of physically damaged equipment: Radiator leakage 5) Immediate corrective/system normalization steps performed: PTW issued 6) Any other relevant information: NIL Regards, Delhi SLDC 20220331230836 2022-03-31 23:08:37 1) Name of the substation and Time: 400 KV Bamnauli at 22:53 hrs. 2) Name of element tripped/restored: 400 KV Bus-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220331202822 2022-03-31 20:28:23 1) Name of the substation and Time: 220 KV NJF 2) Name of element tripped/restored: 220 KV Bamnauli ckt-I charged at 19:30 hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220331195600 2022-03-31 19:56:01 1) Name of the substation and Time: 400 Kv Bamnauli at 18:41 hrs 2) Name of element tripped/restored: 400 KV Tugalkabad ckt-II tripped on distance prot. zone -I 228 mtr.and 500 MVA ICT-III tripped on o/c.bus bar opearted on 400 kv BUS-II. 3) Relay Annunciation: bus bar operated 4) Details of physically damaged equipment: R phase CT fired of BUS-II of Tugalkabad ckt-II and ICT-III 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: No load affected. Regards, Delhi SLDC 20220331185810 2022-03-31 18:58:12 1) Name of the substation and Time: Najafgarh at 18:44Hrs 2) Name of element tripped/restored: 220kV Najafgarh- BML ckt1, Load transferred to 220kV Mundka at 18:45 HRs, Load affected 62 MW for 1 Min 3) Relay Annunciation: 86, E/f 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Substation staff informed to Check the ckt 6) Any other relevant information: Nil Regards, Delhi SLDC 20220330120439 2022-03-30 12:04:40 1) Name of the substation and Time: 220kV Geeta Colony 11:39HRs 2) Name of element tripped/restored: Geeta colony Wazirabad Ckt 2 3) Relay Annunciation: Distance prot Zone-1, B-Phase, 86, SOTF 4) Details of physically damaged equipment: Conductor Snap reported 5) Immediate corrective/system normalization steps performed: Substation staff informed for needful 6) Any other relevant information: NIL Regards, Delhi SLDC 20220330105518 2022-03-30 10:55:19 1) Name of the substation and Time: 220 KLV OKHLA 2) Name of element tripped/restored: 33KV INCOMMER MADE OFF MANNUALLY BY GRID STAFF, I/C 3 ALREADY UNDER BREAKDOWN 3) Relay Annunciation: NA 4) Details of physically damaged equipment: ISOLATOR MELT 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20220329163233 2022-03-29 16:32:35 1) Name of the substation and Time: 220kV TKD- Okhla ckt2 at 15:52HRs 2) Name of element tripped/restored: 220kV TKD- Okhla ckt2 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC 20220329162904 2022-03-29 16:29:05 1) Name of the substation and Time: 220kV Narela 16:08HRs 2) Name of element tripped/restored: 220kV Narela- MAndaula ckt 1 and 2 tripped at 186A and B, Load normalise through bus 220kV coupler at 16:16HRs, 25MW Load affected for 8Min 3) Relay Annunciation: 186 A and B 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Informed to S/stn staff to check the line 6) Any other relevant information: Nil Regards, Delhi SLDC 20220329144545 2022-03-29 14:45:47 1) Name of the substation and Time: Corrigendum : 220kV Tukalkabad 14:03HRs 2) Name of element tripped/restored: 220kV TKD-Mehrauli ckt-1 tripped, 60 MW load affected for 16 Min at 220kV Vasant Kunj. Load restored at 220kV Vasant kunj end through bus coupler 3) Relay Annunciation: 220kV TKD end: Zone-III, Zone-II, R-Ph, 11.1KM 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to concerned S/stn staff to check the ckt 6) Any other relevant information: Nil Regards, Delhi SLDC 20220329143721 2022-03-29 14:37:22 1) Name of the substation and Time: 220kV Tukalkabad 14:03HRs 2) Name of element tripped/restored: 220kV TKD-Mehrauli ckt-1 tripped, 7 MW load affected for 16 Min at 220kV Vasant Kunj. Load restored at 220kV Vasant kunj end through bus coupler 3) Relay Annunciation: 220kV TKD end: Zone-III, Zone-II, R-Ph, 11.1KM 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to concerned S/stn staff to check the ckt 6) Any other relevant information: NIl Regards, Delhi SLDC 20220329135817 2022-03-29 13:58:18 1) Name of the substation and Time: 220kV Okhla 13:10PM 2) Name of element tripped/restored: 220kV Okhla-TKD ckt2 3) Relay Annunciation: Distance Protection, Zone-1, Zone-2, ZOne-3, 86T, Fault currect 18.751KA, Distance 2.06KM 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: S/stn staff informed to check the ckt 6) Any other relevant information: NIL Regards, Delhi SLDC 20220329135502 2022-03-29 13:55:03 1) Name of the substation and Time: 400KV BAWANA, 13:25PM 2) Name of element tripped/restored: 400kV Bawana- Maharanibagh ckt-1 charged (LILO of 400kV Bawana- Mandaula ckt-1) 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC 20220329123325 2022-03-29 12:33:26 1) Name of the substation and Time: 400KV BAWANA, 11:51AM 2) Name of element tripped/restored: 400 kv Bawana-Maharanibagh ckt-2 (LILO of 400KV Bawana-mandola ckt-2) charged 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20220328195957 2022-03-28 19:59:59 1) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: 220KV Geeta colony ckt-II charged at 18:52hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220328181912 2022-03-28 18:19:14 1) Name of the substation and Time: Patparganj 18:05Hrs 2) Name of element tripped/restored: 220KV Geeta colony ckt-II 3) Relay Annunciation: Relay at Patparganj end are distance relay Z-1 R-phase 0.7km. Relay at Geeta colony end are o/c earth fault Z-1 3.4km R-phase. No load was affected 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220328174634 2022-03-28 17:46:35 1) Name of the substation and Time: AT 15:27hrs, Pappankalan-II 2) Name of element tripped/restored: 220KV Bamnoli-II 3) Relay Annunciation: RYB phase ,Z-I 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Restoration. 6) Any other relevant information: CKT normalized. Regards, Delhi SLDC 20220328174625 2022-03-28 17:46:27 1) Name of the substation and Time: At 13:45hrs, Pappankalan-II 2) Name of element tripped/restored: 220KV Bamnoli-II 3) Relay Annunciation: RYB phase , 86T, -173.5KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: BRPL asked to immediately C/O load on other 220KV substations. 6) Any other relevant information: AT 14:09hrs, Bamnoli-PPK-II ckt-II was made available and supply of 220KV PPK-II restored. Regards, Delhi SLDC 20220328173749 2022-03-28 17:37:50 1) Name of the substation and Time: At 12:55 hrs.220kv PPK-2 2) Name of element tripped/restored: 220 KV BAMNAULI-1 tripped 3) Relay Annunciation: dist.prot zone-1 B- PHASE 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 220 KV B/C Put on 6) Any other relevant information: load normalized at 12:59 hrs. Regards, Delhi SLDC 20220328171737 2022-03-28 17:17:40 1) Name of the substation and Time: At 1550 hrs. 220 kv okhala 2) Name of element tripped/restored: 33 KV I/C-3 3) Relay Annunciation: R-Y-B PHASE TRIP,86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: BRPL asked to changeover their load 6) Any other relevant information: 33 kv nehru place-4 tripped simultaneously Regards, Delhi SLDC 20220328170930 2022-03-28 17:09:34 1) Name of the substation and Time: At 15:50 hrs.220 kv okhala 2) Name of element tripped/restored: 33 kv I/C-5 3) Relay Annunciation: E/F 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: BRPL asked to change over their load 6) Any other relevant information: 33 kv nehru place-4 also tripped simultaneously and CB blast reported at BRPL end Regards, Delhi SLDC 20220318195048 2022-03-18 19:50:50 1) Name of the substation and Time: 400kv Bamnauli 2) Name of element tripped/restored: 220kv DIAL-1 and DIAL-2. 3) Relay Annunciation: earth fault,R-PH ,186,fault current 3.374 KA. 4) Details of physically damaged equipment: n/a 5) Immediate corrective/system normalization steps performed: adviced to discom for shifting load. 6) Any other relevant information: Also tripped 220 kv Tuglakabad -mehrauli-2,jone-2 operated ,R-phase ,9.80 km,fault current 14.4 KA. Regards, Delhi SLDC 20220315164227 2022-03-15 16:42:28 1) Name of the substation and Time: Okhla 2) Name of element tripped/restored: 220KV BTPS ckt-I charged at 16:33Hrs and 160MVA T/F-1 charged at 16:38Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220315164011 2022-03-15 16:40:12 1) Name of the substation and Time: Dial 2) Name of element tripped/restored: 220KV Bamnauli ckt-I charged at 16:23Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220315163320 2022-03-15 16:33:21 1) Name of the substation and Time: Dial 2) Name of element tripped/restored: 220KV Bamnauli ckt-I charged at 16:23Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220315130610 2022-03-15 13:06:11 1) Name of the substation and Time: Dial 12:09Hrs. 2) Name of element tripped/restored: 220KV Bamnauli ckt-I 3) Relay Annunciation: Relay at Dial end R-phase Z-2 Relay at Bamnauli end Z-1 R-phase 1.9km. No load was affected 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20220315130040 2022-03-15 13:00:41 1) Name of the substation and Time: Okhla 11:50Hrs. 2) Name of element tripped/restored: BTPS ckt-I and 160MVA T/F-1 3) Relay Annunciation: 220KV BTPS ckt-I tripped on distance relay Y-phase Z-1. 160MVA T/F-1 tripped on 86. 220KV BTPS ckt-II was under shutdown. Load affected was 53MW. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Load normalised through 220KV B/C at 11:55Hrs. 6) Any other relevant information: NA Regards, Delhi SLDC 20220315130033 2022-03-15 13:00:34 1) Name of the substation and Time: Okhla 11:50Hrs. 2) Name of element tripped/restored: BTPS ckt-I and 160MVA T/F-1 3) Relay Annunciation: 220KV BTPS ckt-I tripped on distance relay Y-phase Z-1. 160MVA T/F-1 tripped on 86. 220KV BTPS ckt-II was under shutdown. Load affected was 53MW. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Load normalised through 220KV B/C at 11:55Hrs. 6) Any other relevant information: NA Regards, Delhi SLDC 20220314210849 2022-03-14 21:08:50 1) Name of the substation and Time: 220kV Najafgarh at 19:12Hrs 2) Name of element tripped/restored: 66kV I/c-4 , I/C-2, 66kV DJB ckt 2. 64MW load effected 3) Relay Annunciation: 66kV I/c-4 on E/F, I/C-2 w/o indication, 66kV DJB ckt 2 on z-1, z-2, R and B Ph.,86. 4) Details of physically damaged equipment: 66kV B/C tried at 19:38 but tripped along with I/C 1 and 3. 66kV Budhela-2 ckt 2 on O/C, R Ph., 86. Also, YPh CB pole of 66kV DJB ckt 2 bursted. Remaining 56MW load effected. 5) Immediate corrective/system normalization steps performed: All out going feeders put off, all I/Cs closedand Load normalised one by one by 19:47 hrs 6) Any other relevant information: 66kV DJB ckt 2 and its CB under B/D Regards, Delhi SLDC 20220302104432 2022-03-02 10:44:33 1) Name of the substation and Time: 08:44HRS,220KV SGTN 2) Name of element tripped/restored: 160MVA-I 3) Relay Annunciation: Differial protection 4) Details of physically damaged equipment: Y and B Phase CT of local tranformer damaged 5) Immediate corrective/system normalization steps performed: 09:02 HRS 66KV Bus coupler closed and load normalised 6) Any other relevant information: Approx 45MW load affected Regards, Delhi SLDC 20220226191502 2022-02-26 19:15:04 1) Name of the substation and Time: 220kV Patparganj at 19:09 2) Name of element tripped/restored: 220kV Geeta Colony ckt 1 energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: clearance from Patrolling team. Regards, Delhi SLDC 20220226182955 2022-02-26 18:29:56 1) Name of the substation and Time: Patparganj 18:08hrs 2) Name of element tripped/restored: 220kV Geeta Colony ckt 1 3) Relay Annunciation: At PPG: BY ph Distance protection 1.07km from PPG end.Ib= 18.23kA, Ic=18.29kA At G Colony, BY Ph. distance 3.3km Ib=9.8kA, Ic=9.9kA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220222160643 2022-02-22 16:06:44 1) Name of the substation and Time: 220kV Pragati-Sarita Vihar charged at 16:03 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220222153107 2022-02-22 15:31:08 1) Name of the substation and Time: 220kV Pragati 15:05 2) Name of element tripped/restored: 220kV Sarita Vihar ckt 3) Relay Annunciation: At Pragati - CN Ph, z-1, 1.55km IA= 1.7kA, Ib=1.8kA, Ic= 20.7kA, In= 24.4kA At Sarita Vihar - CN Ph, z-2, 14.65km IA= 1.7kA, Ib=1.8kA, Ic= 9.1kA, In= 5.5kA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220kV IP- Patparganj 1 and 2 closed 6) Any other relevant information: No load effected Regards, Delhi SLDC 20220211200440 2022-02-11 20:04:44 1) Name of the substation and Time: 220 KV PPK-I at 19:27 hrs 2) Name of element tripped/restored: 220 KV PPK-I -BMNLY ckt- I and II charged at 19:27 hrs.ckt under B/D since 06.02.22 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220208091442 2022-02-08 09:14:42 1) Name of the substation and Time: At 400kV Dwarka (PGCIL) 00:19 Hrs 2) Name of element tripped/restored: 500 MVA ICT-1 energized and 220kV Load taken 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220kV Dwarka (DTL) Buses energized through this ICT. Regards, Delhi SLDC 20220208091003 2022-02-08 09:10:04 1) Name of the substation and Time: At 400kV Bamnauli at 22:51 Hrs dt 07.02.22 2) Name of element tripped/restored: 400kV bamnauli - Dwarka ckt 1 energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220208003305 2022-02-08 00:33:06 1) Name of the substation and Time: At 400kV Bamnauli and Dwarka 22:51 Hrs 2) Name of element tripped/restored: 400kV bamnauli - Dwarka ckt 1 energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: at 00:19 hrs, 500MVA ICT-1 energized at 400kV Dwarka. Load taken. Regards, Delhi SLDC 20220206133850 2022-02-06 13:38:51 1) Name of the substation and Time: At 220kV PPK-1 on 10:58 hrs 2) Name of element tripped/restored: at 220kVPPK-1 220kV Bamnoli ckt 1 tripped on Z-1, C PH. CVT available. ckt tried but tripped on z-1, C Ph, E/F at 11:04 hrs. 220kV Bamnoli ckt 2 tripped on z-1, A and B Ph, z-1. 3km at bamnoli end only. 3) Relay Annunciation: - 4) Details of physically damaged equipment: coductor snap reported on both ckts 5) Immediate corrective/system normalization steps performed: 210MW effected partially restored by discom and DTL All load normalized by 13:01 hrs after revival of 220kV Bamnoli-PPK-3 ckt 1 and 2 6) Any other relevant information: - Regards, Delhi SLDC 20220206114709 2022-02-06 11:47:11 1) Name of the substation and Time: Preliminary information both coundcter senap on both ckt- Bamnauli P.P.K-I ckt-I and II reported at 11:00 Hrs 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: DMRC supply restored through Naraina Ridge route 6) Any other relevant information: - Regards, Delhi SLDC 20220204133948 2022-02-04 13:39:49 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: 66KV I/C-IV charged at 13:35Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220204120215 2022-02-04 12:02:15 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: 66KV I/C-IV made off by grid staff at 09:55 Hrs due to sparking. Load affected was approx. 55MW of 66KV C-Dot ckt I and II and 66KV DMRC ckt I and II. 3) Relay Annunciation: na 4) Details of physically damaged equipment: 66KV I/C-IV B-phase Bus-I isolator jaw damaged. 5) Immediate corrective/system normalization steps performed: 66KV C-Dot ckt I and II normalised at 11:08Hrs on 66KV Bus-II after backcharging 66KV D-I and II and 66KV DMRC ckt I and II charged at 11:15Hrs. 6) Any other relevant information: Presently 66KV I/C-IV is under shutdown alongwith 66KV Bus-I Regards, Delhi SLDC 20220204120213 2022-02-04 12:02:14 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: 66KV I/C-IV made off by grid staff at 09:55 Hrs due to sparking. Load affected was approx. 55MW of 66KV C-Dot ckt I and II and 66KV DMRC ckt I and II. 3) Relay Annunciation: na 4) Details of physically damaged equipment: 66KV I/C-IV B-phase Bus-I isolator jaw damaged. 5) Immediate corrective/system normalization steps performed: 66KV C-Dot ckt I and II normalised at 11:08Hrs on 66KV Bus-II after backcharging 66KV D-I and II and 66KV DMRC ckt I and II charged at 11:15Hrs. 6) Any other relevant information: Presently 66KV I/C-IV is under shutdown alongwith 66KV Bus-I Regards, Delhi SLDC 20220203161450 2022-02-03 16:14:51 1) Name of the substation and Time: PPK-1 2) Name of element tripped/restored: 220KV Bamnauli ckt-I charged at 16:09Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220203091653 2022-02-03 09:16:55 1) Name of the substation and Time: Pappankala 1 at 07:41Hrs 2) Name of element tripped/restored: 220kV Bamnauli ckt 1 tripped and SPS operated on 66kV Harinagar and Bindapur 1 3) Relay Annunciation: Distance protection YB phase 4) Details of physically damaged equipment: nest and debris observed at PPK-1 end on B Phase line isolator gantry 5) Immediate corrective/system normalization steps performed: load of Naraina taken on Ridge Valley ckt to create margin and load normalized by 08:12 hrs 6) Any other relevant information: Around 50 MW load effected. Regards, Delhi SLDC 20220129143943 2022-01-29 14:39:44 1) Name of the substation and Time: 13:17 HRS 220KV R.K.PURAM 2) Name of element tripped/restored: 220KV CB of 220KV Trauma centre -I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220KV Circuit breaker cheked by maintenance staff of R.K.Puram and problem solved 6) Any other relevant information: 220KV trauma centre -I charged Regards, Delhi SLDC 20220129103222 2022-01-29 10:32:23 1) Name of the substation and Time: 09:50 HRS 220KV R.K.PURAM 2) Name of element tripped/restored: Tried to close 220KV CB of Trauma centre-No-! but could not be closed 3) Relay Annunciation: nforced tripple Pole Trip and Pole Discrepancy 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load of 220KV Ridge vally and 220KV Naraina could not taken on 220KV R.K.Puram due to 220KV CB Problem at R.K.Puram substation Regards, Delhi SLDC 20220128195518 2022-01-28 19:55:19 1) Name of the substation and Time: Gazipur 2) Name of element tripped/restored: 220KV Maharani Bagh ckt-II charged at 17:58Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220128172141 2022-01-28 17:21:42 1) Name of the substation and Time: 220kV Gazipur at 16:46 hrs 2) Name of element tripped/restored: 220kV Maharanibagh ckt 2 3) Relay Annunciation: distance protection 7.89km from GZP and 3.8 from MBg 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load effected as B/C was already on. Regards, Delhi SLDC 20220128151812 2022-01-28 15:18:13 1) Name of the substation and Time: Maharanibhagh ,14:50hrs 2) Name of element tripped/restored: 220 KV C.B. of Masjid moth 3) Relay Annunciation: bkr. lock out 4) Details of physically damaged equipment: gasket damaged 5) Immediate corrective/system normalization steps performed: -- 6) Any other relevant information: CB lockedout at 20:50hrs dt 27.01.2022 Regards, Delhi SLDC 20220127170251 2022-01-27 17:02:52 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: 100MVA 220/33KV T/F-1 charged at 16:56Hrs on single cable of 33KV side B-phase. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220127100400 2022-01-27 10:04:01 1) Name of the substation and Time: Park Street 2) Name of element tripped/restored: 100MVA 220/33KV T/F tripped on differential RYB-phase LV REF at 09:21 Hrs. Grid staff has reported B-phase 33KV I/C side cable punctured. Load affected was 25MW. Load normalised through 33KV B/C at 09:36Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220123073628 2022-01-23 07:36:29 1) Name of the substation and Time: 03:10 HRS 220KV parkstreet 2) Name of element tripped/restored: 33KV I/C No-II(220/33KV) Energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: All33KV feeders of 33KV Bus-II shifted on 33KV Bus-I at 02:52 hrs Regards, Delhi SLDC 20220123022904 2022-01-23 02:29:05 1) Name of the substation and Time: 01:20 HRS 220KV Park street 2) Name of element tripped/restored: 33KV I/C No-II(220/33KV) 3) Relay Annunciation: Anytrip O/C ST-I,O/C-Y phase 86 operated and CB open 4) Details of physically damaged equipment: 33KV LA Jumper damage of R and Y phase of 33KV baird road -I 5) Immediate corrective/system normalization steps performed: 01:40 HRS 33KV Buscoupler tried to close but did not hold and same time 33KV I/C No-I tripped .after 1 minute 33KV I/C-I tried to close held OK 6) Any other relevant information: Approx 16 MW load affected. Regards, Delhi SLDC 20220122224404 2022-01-22 22:44:05 1) Name of the substation and Time: 21:36 HRS 220KV LODHI ROAD 2) Name of element tripped/restored: 33KV I/C-II 3) Relay Annunciation: SF6 Gas pressure low lock out on 33KV Bus-II 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 22:36 HRS 33K NDSE,33KC CBI,33KV Nizamuudin feeders shifted on 33KV BUS-I Eccept 16MVA-3 due Bus isolator problem 6) Any other relevant information: approx 21MW load affected Regards, Delhi SLDC 20220121124538 2022-01-21 12:45:38 1) Name of the substation and Time: 220kV Gopalpur at 10:50 2) Name of element tripped/restored: 160 MVA Tx-4 and 66kV I/C 4 3) Relay Annunciation: Tx tripped on REF, Differential and I/C intertripped 4) Details of physically damaged equipment: R and B Ph. line isolators of 66kV I/c 4 5) Immediate corrective/system normalization steps performed: Load shifted by Discom 6) Any other relevant information: 100MV load effected on tripping. Regards, Delhi SLDC 20220121123925 2022-01-21 12:39:26 1) Name of the substation and Time: 10:45 at 220kV Narela. 2) Name of element tripped/restored: 66kV I/C 1, 2 and 3 and 20MVA Tx-1 3) Relay Annunciation: 66kV I/C 1, 2 and 3 tripped on E/F. 20MVA Tx-1 tripped on REF LV side. 4) Details of physically damaged equipment: Earth strip of R ph. CVT of 66kV Bus 1 5) Immediate corrective/system normalization steps performed: System normalised after isolating said CVT at 11:20 Hrs 6) Any other relevant information: peacock electrocuted. approx 85 MW load effected on instance. system restored at 11:25 Regards, Delhi SLDC 20220121074850 2022-01-21 07:48:51 1) Name of the substation and Time: 220 kV IP 03:37hrs 2) Name of element tripped/restored: 220 kV IP - Patparganj ckt-I 3) Relay Annunciation: Distance protection Zone-1 B phase 3.987 kms 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: No load affected. Load taken by Ckt-II 6) Any other relevant information: NA Regards, Delhi SLDC 20220117182032 2022-01-17 18:20:33 1) Name of the substation and Time: 17:24hrs,220 kv Maharanibagh 2) Name of element tripped/restored: 220 KV Trauma center ckt-1 and 2 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220 KV Trauma center ckt-1 and 2 charge at NO load for 24 hrs 6) Any other relevant information: - Regards, Delhi SLDC 20220110090422 2022-01-10 09:04:23 1) Name of the substation and Time: 220kV RK Puram, 03:13 2) Name of element tripped/restored: 160 MVA Tx-2 at 03:13, 100MVA Tx-1 at 03:25, 100MVA Tx-2 at 03:31 3) Relay Annunciation: over Voltage 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 220kV Vasantkunj ckt-1 energized at 03:38, 160 MVA Tx- 2 and 100 MVA Tx-1 energized at 03:50, 100MVA Tx-2 energized at 04:05 and 160 MVA- 1 energized at 07:49. 6) Any other relevant information: 21 MW load was effected but shifted by BRPL and DMRC. Regards, Delhi SLDC 20220108070910 2022-01-08 07:09:10 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 04:20 hrs 220 kV Naraina Ridge Valley ckt charged load normalized at Ridge Valley. At 04:25 hrs 220 kV Ridge Valley R K Puram ckt 1 and 2 charged and load normalized at R K Puram and Trauma Centre. At around 04:30 hrs at 220 kV Vasant Kunj, 220 kV R K Puram ckt 1 and 2 tried to charge but could not be closed due to over voltage. At 05:47 hrs, Vasant Kunj R K Puram ckt 2 charged and load normalized at Vasant Kunj end. Presently, 220 kV Mehrauli is still affected and fire is being controlled. The status will be updated after receiving further information. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220108070738 2022-01-08 07:07:39 1) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At around 02:20 hrs 20 MVA transformer no. 1 tripped on PRV at 220 kV Mehrauli. 20 MVA transformer no. 2 is already under shutdown. At around 3:40 hrs 220 kV Mehrauli has reported fire in 11 kV and requested to switched off all 220 kV feeders. At 3:43 hrs 220 kV R K Puram – Vasant Kunj ckt 1 and 2 made on from R K Puram end but at Vasant Kunj end both ckt could not hold on over voltage. At 3:45hrs 220 kV DIAL-Mehrauli ckt- 1 and 2 made off from DIAL end. At 03:46 hrs Tuglkabad Mehrauli ckt 1 and 2 tripped on zone 2 general trip A and B phase (13 Kms) from Tuglakabad end. At 03:46 hrs at 220 kV Vasant Kunj, 220 kV Mehrauli ckt 1 and 2 tripped on earth fault, 86 and air lockout relay along with 160 MVA transformer no.3 on overvoltage. At 03:46 hrs 220 kV Naraina Ridge Valley ckt tripped on 86 from Ridgevalley end. Total Load affected during tripping was approx 158 MW at Mehrauli, Vasant Kunj, Ridge Valley, R K Puram and Trauma Centre. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC 20220108050633 2022-01-08 05:06:34 1) Name of the substation and Time: Harsh Vihar 2) Name of element tripped/restored: 400KV Dadri ckt-II tripped on R-phase Z-1 22.7km. Load affected was 33MW at Preet Vihar. Load normalised through 220KV PPGJ-Preet Vihar ckt-I at 03:22Hrs. Regards, Delhi SLDC 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20220108013310 2022-01-08 01:33:11 1) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: Supply of 220kV Mandaula Ckt -I Failed at 01:11 Hrs. Load affected was approx 50MW. Load normalised through 220kV SOW ckt-II at 01:21 Hrs. Regards, Delhi SLDC 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: MA 6) Any other relevant information: NA Regards, Delhi SLDC 20220108012420 2022-01-08 01:24:21 1) Name of the substation and Time: Najafgarh 2) Name of element tripped/restored: At 00:50 Hrs, 66kV I/C-II tripped on O/C. 66kV I/c-IV tripped without indication. Load affected was 33MW. Load Normalised after charging 66KV I/C-IV at 01:05 Hrs and 66kV I/c-II at 01:15 Hrs 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20220107003520 2022-01-07 00:35:21 1) Name of the substation and Time: 00:05 HRS 220KV Subzimandi 2) Name of element tripped/restored: 220KV Gopalpur CKT-II 3) Relay Annunciation: without relay,alarm and indication 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 00:10 HRS 33KV Buscoupler closed 6) Any other relevant information: Load affected approx 11MW Regards, Delhi SLDC 20220105230721 2022-01-05 23:07:22 1) Name of the substation and Time: 400 KV Harsh Vihar at 22:50 hrs 2) Name of element tripped/restored: 400 KV dadri ckt-I tripped on over voltage.ckt-II already under B/D . 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: load backfeed from PPg-PVR Regards, Delhi SLDC 20220105105808 2022-01-05 10:58:09 1) Name of the substation and Time: Gopalur at 10:13 2) Name of element tripped/restored: Mandola 1 tripped. Supply failed on Mandola 2. 3) Relay Annunciation: Yph, z-1, 1.5km. 4) Details of physically damaged equipment: none reported 5) Immediate corrective/system normalization steps performed: Gopalpur-Wazirabad 1 and 2 closed at 10:20 and Mandola 2 put off manually. 6) Any other relevant information: Load effected: approx 130 MW of Gopalpur and Sabzi Mandi. Regards, Delhi SLDC 20220104132803 2022-01-04 13:28:05 1) Name of the substation and Time: 400kV Mundka at 12:13 hrs. 2) Name of element tripped/restored: Jhatikara Ckt-2 at Mundka end only. 3) Relay Annunciation: Z-1, R-phase E/F 4) Details of physically damaged equipment: Female arm of line isolator got damaged. 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: BPI and female arm of the isolator is being attended. Also, due to jerk, STG of CCGT Bawana tripped resulting generation loss of approx. 100MW. However, no shortage of power. Regards, Delhi SLDC 20220101133108 2022-01-01 13:31:09 1) Name of the substation and Time: 220 kv Mehrauli 2) Name of element tripped/restored: at 13:00 hrs AC/DC supply restored by protection staff.all station normalized at 13:00 hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC 20220101130540 2022-01-01 13:05:41 1) Name of the substation and Time: 22O KV Mehrouli 12.32 2) Name of element tripped/restored: DC Supply fail at station.various elements triped and theire status is not conformed by operation staff,msg conveyed to BSES for shifting the load 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20211108163702 2021/11/08 16:37:05 1) Name of the substation and Time: test 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: Please IGNORE Regards, Delhi SLDC 20210308151328 2021/03/08 15:13:40 hi please ignore again 20210308150914 2021/03/08 15:09:43 Please ignore 20210308150624 2021/03/08 15:07:23 Please ignore 20210308142857 2021/03/08 14:43:10 Please Ignore 20210308142632 2021/03/08 14:27:37 please ignore. 20210308140820 2021/03/08 14:09:15 Please ignore 20210308132500 2021/03/08 13:25:14 HI testing 20211231081159 2021-12-31 08:12:00 1) Name of the substation and Time: Kanjhawala 2) Name of element tripped/restored: 160MVA T/F-3 tripped at 01:51Hrs. 3) Relay Annunciation: RYB differential LV and HV REF 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: No load was affected Regards, Delhi SLDC 20211227152123 2021-12-27 15:21:24 1) Name of the substation and Time: 15:10 HRS 220KV M.MOTH 2) Name of element tripped/restored: 100MVA-3 with 33KV I/C-3 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 15:10 HRS 100MVA-3 with 33KV I/C-3 normalised Regards, Delhi SLDC 20211227150500 2021-12-27 15:05:00 1) Name of the substation and Time: 14:10 HRS 220KV M>Moth 2) Name of element tripped/restored: 100MVA-3 with 33KV I/C-3 3) Relay Annunciation: 86 1 and @ 4) Details of physically damaged equipment: 33KV CB assembly/breaker burnt 5) Immediate corrective/system normalization steps performed: 33KV I/C-II shifted on 33KV Bus-I at 14:30 HRS 6) Any other relevant information: Approx 43 MW load affected normalised at 14:30 HRS Regards, Delhi SLDC 20211227141617 2021-12-27 14:16:17 1) Name of the substation and Time: 220KV Gopalpur 2) Name of element tripped/restored: Mandola-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Circuit charged at 12:35 HRS at Gopalpur and charged/closed at 13:28 HRS at mandola Regards, Delhi SLDC 20211227015055 2021-12-27 01:50:56 1) Name of the substation and Time: At 220KV Wazirabad(23:52hrs) 2) Name of element tripped/restored: 220KV Mandola ckt-I and II. 3) Relay Annunciation: bus bar protection at Mandola station. 4) Details of physically damaged equipment: Y phase CB blast of Gopalpur ckt-II at Mandola. 5) Immediate corrective/system normalization steps performed: 220KV Preet Vihar-Harsh Vihar ckt-I and II put ON. 6) Any other relevant information: Load normalized. Regards, Delhi SLDC 20211226221708 2021-12-26 22:17:09 1) Name of the substation and Time: 400 KV MANDOLA AT 20:44 HRS 2) Name of element tripped/restored: ALL 500 MVA ICTS TRIPPED AT 400 KV MANDOLA END 3) Relay Annunciation: AWAITED 4) Details of physically damaged equipment: Y- PHASE CB BLAST AT MDL END OF 220 GOPALPUR CKT-2 AND BUS BAR OPERATED AT MANDOLA END 5) Immediate corrective/system normalization steps performed: LOAD NORMALIZE THROUGH 400 HVR AND 220 GZP 6) Any other relevant information: SOTF ON 220 KV PPG-G.COLONY CKT-2 Regards, Delhi SLDC 20211226220222 2021-12-26 22:02:23 1) Name of the substation and Time: MANDOLA 2) Name of element tripped/restored: ALL 500MVA ICTS 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NRLDC INFORM CB BLAST AT MANDOLA END 5) Immediate corrective/system normalization steps performed: VARIOUS OPERATIONS AT DIFFERNT GRIDS 6) Any other relevant information: SOTF AT PPG-G.COLONY CKT-2 Regards, Delhi SLDC 20211223084411 2021-12-23 08:44:12 1) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 07:38Hrs 220KV Bus Bar operated on Z-1 Z-2 resulted in tripping of following elements: 220KV TGBD ckt-I and II 220KV BTPS ckt-I and II 160MVA, 100MVA 220/66KV T/F1 and 2 100MVA 220/33KV T/F-3,4 and 5. Load affected was 105MW Discoms have partially shifted the load. AT 08::22Hrs 220KV TGBD cktI and II, 220KVBTPS ckt-II, T/F-1,2,3,4 and 5 charged. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20211222142811 2021-12-22 14:28:12 1) Name of the substation and Time: 13:30 hrs okhla 2) Name of element tripped/restored: Both 220 kv TBD Ckts 3) Relay Annunciation: bus bar prot.operated 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: both ckts normalize at 14:10 6) Any other relevant information: all 33 kv load (approx. 50 )MW affected for few minutes Regards, Delhi SLDC 20211222091739 2021-12-22 09:17:41 1) Name of the substation and Time: 220KV PPK-I,07:35 2) Name of element tripped/restored: 220KV Bamnauli-II 3) Relay Annunciation: o/c B phase,86A,B Distance Protection 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load taken by closing 220KV Buscoupler at07:39HRS andDwarka-II 6) Any other relevant information: Load affected 70MW approx Regards, Delhi SLDC 20211220185000 2021-12-20 18:50:01 1) Name of the substation and Time: Harsh Vihar 2) Name of element tripped/restored: At 17:26Hrs due to failure of DC supply 66KV load gets affected (40MW) 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: At 17:34 Hrs Load normalised 6) Any other relevant information: NA Regards, Delhi SLDC 20211220141216 2021-12-20 14:12:17 1) Name of the substation and Time: Mehrauli, 13:50 Hrs 2) Name of element tripped/restored: 220kV Tughlakabad ckt 2 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Ckt energized after rectification of CB Regards, Delhi SLDC 20211219115356 2021-12-19 11:53:57 1) Name of the substation and Time: At 220kV Mehrauli 2) Name of element tripped/restored: 220kV TKD-MLI Ckt-2 is under B/D since yesterday i.e. 03:10 hrs of 18.12.2021. 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: 220kV R-phase pole of CGL make CB is reported stuck. 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: As mentioned above, 220kV TKD-MLI Ckt-2 is under B/D and 220kV M. Bagh-T.Centre Ckt-1 and 2 are under S/D. Hence, it will be difficult to maintain the load tomorrow, in case 220kV TKD-MLI Ckt-2 is not made available. Regards, Delhi SLDC 20211218125511 2021-12-18 12:55:12 1) Name of the substation and Time: NA 2) Name of element tripped/restored: 220 kV Mehrauli: At 9:30 hrs: 220 kV Tuglakabad 2 , Dail 2 and Vasant kunj 2 tripped on 186. 160 MVA transformer no. 4 tripped without indication (Load affected 38 MW). 66 kV C1 and C2, 66 kV Cdot 1 and 2 tripped on SPR (Load affected 68 MW). Total load affected was 106 MW. 9:37 hrs 220 kV Dial 2 and 160 MVA transformer no. 4 charged. 09:57 66 kV C1 and C2, 66 kV Cdot 1 and 2 charged. 220 kV Naraina: At 10:01 hrs: 220 kV bus coupler, 33 kV I/c no. 1, 33 kV bus coupler tripped on O/C 86. Load affected at 220 kV Naraina, Ridge valley, R K Puram and Trauma center is approximately 300 MW. At 10:07 hrs Load of 220 kV R K Puram normalized. At 10:21 hrs load of 220 kV Naraina , Ridgevalley and Trauma Center normalized. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20211218091649 2021-12-18 09:16:50 1) Name of the substation and Time: -- 2) Name of element tripped/restored: following circuits tripped in night due to Fog: 1)220 KV SMB-Bawana ckt-I at 01:12 hrs,2)220 KV NZF-Bamnauli ckt-II at 01:53 hrs charged at hrs.08:48 hrs 3)220 KV goplapur-Mandola ckt-I at 02:20 hrs,4)220 KV sow-mandola ckt-I at 02:20 hrs.5)220 Mahrauli-Tugalkabad ckt-I at 03:10 hrs polymer burn,7)220 Kv sow-mandola ckt-III at 04:08 hrs charged at 07:28 hrs 3) Relay Annunciation: -- 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: --- 6) Any other relevant information: -- Regards, Delhi SLDC 20211218072942 2021-12-18 07:29:43 1) Name of the substation and Time: bawana at 04:43 hrs 2) Name of element tripped/restored: 315 MVa ICT-4 3) Relay Annunciation: buchholz relay 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: -- 6) Any other relevant information: No load affected Regards, Delhi SLDC 20211213083546 2021-12-13 08:35:48 1) Name of the substation and Time: 220 KV Naraina at 23:40 hrs on dt 12.12.2021 2) Name of element tripped/restored: 100 MVA Transformer No. 1 Tripped 3) Relay Annunciation: Differential relay operated; R and B phase, Relay 86, HVCB, LVCB 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: No load affected Regards, Delhi SLDC 20211212171312 2021-12-12 17:13:13 1) Name of the substation and Time: Najafgarh 16:22 hrs. 2) Name of element tripped/restored: 220kV Mundka Ckt tripped at NJF end only 3) Relay Annunciation: LBB 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Approx. 50MW affected load taken through 66kV Bus-Coupler at 16:28 hrs. Load normalized on 220kV Mundka Ckt at 16:40 hrs. 6) Any other relevant information: Refer earlier message, there is some 220kV DC problem since morning. Regards, Delhi SLDC 20211212090118 2021-12-12 09:01:19 1) Name of the substation and Time: Najafgarh 07:45AM 2) Name of element tripped/restored: Circuit breaker of Bamnauli ckt 1 3) Relay Annunciation: No Relay 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: The load was shifted by Discom except 15 MW. The load normalized throuh 66 kV bus coupler 6) Any other relevant information: The Dc supply and auxiliary supply failed at 05:40AM. 20 MVA transformer no. 2 was tripped on Buchholz relay at 05: 40 AM. Load affected was 2 MW. At 07:45 AM circuit breaker of Bamnauli ckt 1 at Najafgarh end without indication. Load affected was 81 MW. Load was shifted by Discom except 15 MW. Load restored after turning on 66 kC bus coupler at 08:04 AM. The 11 kV load normalized at 08:10AM Regards, Delhi SLDC 20211130105946 2021-11-30 10:59:47 1) Name of the substation and Time: Testing 2) Name of element tripped/restored: Testing 3) Relay Annunciation: Testing 4) Details of physically damaged equipment: Testing 5) Immediate corrective/system normalization steps performed: Testing 6) Any other relevant information: Testing Regards, Delhi SLDC 20211124155021 2021-11-24 15:50:22 1) Name of the substation and Time: 220KV Wazirabad 13:56Hrs 2) Name of element tripped/restored: 160MVA T/F-4 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC 20211124074552 2021-11-24 07:45:53 1) Name of the substation and Time: SOW,at 02:38 hrs 2) Name of element tripped/restored: 160 tr. 3) Relay Annunciation: Buchholz relay,OLTC operated,SPR 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: 66 KV B/C made ON 6) Any other relevant information: 26 MW load affected for 2 minute. Regards, Delhi SLDC 20211122135251 2021-11-22 13:52:52 1) Name of the substation and Time: PPG at 13:19 hrs. 2) Name of element tripped/restored: 100 MVA-II 220/66 KV 3) Relay Annunciation: diffrential relay and HV REF,high set R phase 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: load shifted by discom at Other source 6) Any other relevant information: 100 MVA-I under shutdown form morning. Regards, Delhi SLDC 20211117155250 2021-11-17 15:52:51 1) Name of the substation and Time: 220kV Mahrauli. 2) Name of element tripped/restored: 220kV Tughlakabad ckt 1 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Line charged at 15:17 Regards, Delhi SLDC 20211117143547 2021-11-17 14:35:48 1) Name of the substation and Time: Mehrauli 13:10 2) Name of element tripped/restored: 220kV Tughlakabad ckt 1 3) Relay Annunciation: B ph Line differential at Mehrauli end and B phs trip, zone 2, 10.30km 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: Load taken on 220kV Tughlakabad ckt 2 at 13:23 6) Any other relevant information: Prior to tripping, 220kV Mehrauli-Tughlakabad ckt 2 was put off at 13:05hrs to facilitate its emergency S/D for reconnecting suspension string jumper at Tension Tno. 68. Total load aroud 190 MW effected of 220kV Mehrauli, Vasant Kunj, RK Puram and DIAL Grids for 12 mins. Regards, Delhi SLDC 20211115223735 2021-11-15 22:37:36 1) Name of the substation and Time: Dawarka at 22:02 hrs 2) Name of element tripped/restored: 220 KV PPK-III ckt-I and II 3) Relay Annunciation: over voltage 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: 220 KV Bus coupler made ON at RKP 6) Any other relevant information: line remain charged from PPK-III.at 22:17 hrs both ckt charged. Regards, Delhi SLDC 20211107121124 2021-11-07 12:11:25 16MVA T/F tripped on differential R-Y-B-ph and 86 at 11:45Hrs, load affected was:31Amps, Load normalised through Bus-Section at 11:45Hrs. 20211103221325 2021-11-03 22:13:26 Update: 220KV wazirabad-mandola ckt-2 charged at 22:03 hrs. Regards, Delhi SLDC 20211103185026 2021-11-03 18:50:27 Update: 220/66kV 160MVA Tx-2 charged at 18:34 hrs. Regards, Delhi SLDC 20211103175801 2021-11-03 17:58:02 At 220KV Wazirabad: 220KV Mandola ckt-2 tripped at 17:39Hrs without indication at wazirabad end. NL was affected. 20211103174734 2021-11-03 17:47:35 At 220KV SGTN 160MVA T/F-2 along with I/C-2 tripped on 86A and B at 17:19, load affected was 23MW, 66KV B/C made on at 17:22 20211102203558 2021-11-02 20:35:59 220 KV Mandola-III charged at 20:30 hrs. 20211102175849 2021-11-02 17:58:50 At 16:40 hrs:220 KV Mandola ckt -III tripped from mandola end without indication.ckt remain charged from SOW.No load affected. 20211102081414 2021-11-02 08:14:15 100MVA T/F charged at 01:00Hrs. Regards, Delhi SLDC 20211101221643 2021-11-01 22:16:44 100MVA T/F tripped on REF at 21:42Hrs. Load affected was 30MW. TPDDL have shifted its load. Regards, Delhi SLDC 20211031081331 2021-10-31 08:13:33 100 MVA tr-I tripped on Over flux at 03:06 hrs.load normalized through 33 KV Bus coupler at 03:08 hrs.Tr. charged at 07:59 hrs. 20211026091124 2021-10-26 09:11:25 160 MVA tr-II tripped on Diffrential RYB phase at 09:05 hrs. NO load affected. 20211025085625 2021-10-25 08:56:26 220KV Maharani Bagh ckt charged at 08:12Hrs. Regards, Delhi SLDC 20211024195026 2021-10-24 19:50:27 At 220KV Mehrauli 220/66KV T/F-1 tripped on relay PRV, 86 and 30B. I/C-1,2,3,4 of 220/66KV T/F tripped on E/f at 18:55. Load affected:-I/C-1 and 3: 24MW each, I/C-2: 36MW, I/C-4: 35MW. Load normalized after I/C-2,3,4 made on at 19:15. Note:- 220/66kv T/f-1 is under breakdown 20211024194627 2021-10-24 19:46:28 220KV Maharani Bagh ckt tripped on Z-1 R-phase 3.9km at 19:35Hrs. No load was affected. Regards, Delhi SLDC 20211024183225 2021-10-24 18:32:26 220KV Maharani Bagh ckt-I charged at 18:15Hrs. Regards, Delhi SLDC 20211024172357 2021-10-24 17:23:58 220KV Maharani Bagh ckt-I tripped on Z-1 RB-phase 86 at 16:54Hrs. No load was affected. Regards, Delhi SLDC 20211020145023 2021-10-20 14:50:24 11 KV incomer -I charged at 13:00 hrs. 20211020123142 2021-10-20 12:31:43 11 KV Incomer -I tripped on Earth fault.3.5 MW load affected. Msg conveyed to BRPL for load shifting. 20211020083702 2021-10-20 08:37:03 20MVA T/F-1 tripped on 86 at 02:52Hrs. Load affected was 3MW. Load normalised through 11KV Bus Section at 02:55Hrs. 20MVA T/F-1 charged at 03:35Hrs. Regards, Delhi SLDC 20211019205856 2021-10-19 20:58:57 20MVA T/F-2 tripped on O/C RYB-phase at 19:35Hrs. Load affected was 4MW. Load normalised after charging 20MVA T/F-2 at 20:08Hrs. Regards, Delhi SLDC 20211018121317 2021-10-18 12:13:18 At 11:23 hrs, 33 kV Incomer - 1 tripped without indication. affecting about 30 MW load. At 11:30 hrs, load normalized by closing 33 kV Bus Coupler. Maintenance team is attending the breakdown. 20211018120400 2021-10-18 12:04:01 At 11:23 hrs, 33 kV Incomer - 1 tripped without indication. affecting about 30 MW load. At 11:30 hrs, load normalized by closing 33 kV Bus Coupler. Maintenance team is attending the breakdown. 20211018120328 2021-10-18 12:03:28 At 11:23 hrs, 33 kV Incomer - 1 tripped without indication. affecting about 30 MW load. At 11:30 hrs, load normalized by closing 33 kV Bus Coupler. Maintenance team is attending the breakdown. 20211017213438 2021-10-17 21:34:39 100 MVA tr-III tripped on Buchholz Alarm WTI at 21:13 hrs. No load affected. 20211017213250 2021-10-17 21:32:51 100 MVA tr-II tripped on 195 BC, diffrential B phase at 21:00 hrs. No load affected. 20211014125829 2021-10-14 12:58:30 220KV Bamnauli ckt-II charged at 12:55Hrs. Regards, Delhi SLDC 20211014121927 2021-10-14 12:19:28 220KV Bamnauli ckt-II tripped on R-phase differential at 11:49Hrs. Load affected was 81MW. Load normalised through 220KV B/C at 11:50Hrs. Regards, Delhi SLDC 20211013181339 2021-10-13 18:13:40 220kV Mandola-Gopalpur ckt 1 energized at 18:06 hrs. 20211013150425 2021-10-13 15:04:26 100 MVA tr-I charged at 15:00 hrs on NO load.Tr. under B/D from dated 21.08.2021. 20211013114140 2021-10-13 11:41:41 at Gopalpur s/stn supply failed due to tripping at Mandola ckt-1 at mandola end on Pole discrepancy at 10:30 hrs.load normalized through 220 KV SOW ckt-I.40 MW (subji mandi)Load affected for 10 minute. 20211012215136 2021-10-12 21:51:38 At 20:33hrs:: Load of Ridge Valley normalized by taking load on RK Puram ckt. (20:30hrs:: 220Kv Bus section-II at RK Puram put ON.) 20211012214711 2021-10-12 21:47:12 At 20:10hrs:: Complete Load(approx 70MW) of Ridge valley affected due to supply fail from 220KV RK Puram station(220Kv Bus section-II at RK Puram Tripped on E/F)and tripping of 220KV Naraina ckt on master 86. NOTE: The above trippings occurred when 220KV Naraina was taking load on 220Kv Ridge Valley ckt. 20211012154004 2021-10-12 15:40:07 220 KV BTPS ckt-II charged at 15:15 hrs. 20211012112437 2021-10-12 11:24:37 while processing shutdown of 220 KV Mundaka ckt ,220 KV bus coupler tripped on auto trip at 10:32 hrs.B/C made on at 10:37 hrs.39 MW load affected, shifted by discom at 10:35 hrs. 20211012100739 2021-10-12 10:07:40 220 KV BTPS ckt-II tripped on Distance prot R phase from both end.distance from BTPS 1.8 KM.No LOad affected. 20211009203546 2021-10-09 20:35:47 220 KV Narela-mandola ckt-I charged at 20:14 hrs. 20211009155828 2021-10-09 15:58:29 At 15:53, 66kV I/C close and load of 66kV Dheerpur normalized. 20211009154012 2021-10-09 15:40:13 At 15:10 Hrs, upon energizing 66kV Burari ckt which was under S/D by TPDDL, the same tripped on E/F with smoke in Y Ph LA, causing tripping of 66kV I/C#4 on O/C. About 17MW load of 66kV Dheerpur ckt is effected due to absence of alternative source. 20211009134352 2021-10-09 13:43:53 At 13:24hrs, 220kV Narela Mandola ckt 1 tripped at both ends on A-N phase fault, distance 6.86km from Narela end. No load is effected. 20211008073207 2021-10-08 07:32:09 HI 20211007161327 2021-10-07 16:13:31 220KV Bamnoli-Dail ckt-2 charged at 12:45Hrs. 20211007074416 2021-10-07 07:44:17 220 KV Bamnauli ckt-II tripped on distance prot.R and Y phase,zone-I,2.76 km from bamnauli at 07:27 hrs.No load affected. 20211006231234 2021-10-06 23:12:36 20 MVA tr-II tripped on OLTC at 22:40 hrs.11 KV bus section also tripped on O/C.3 MW Load affected. Advised to BRPL for shifting the load. 20211006153900 2021-10-06 15:39:01 220KV Tughlakabad ckt-II charged at 15:33Hrs. Regards, Delhi SLDC 20211006135809 2021-10-06 13:58:10 220KV Tughlakabad ckt-II tripped on Z-1 C-phase 5.9km at 13:38Hrs. No load was affected. Regards, Delhi SLDC 20211005150415 2021-10-05 15:04:16 220 KV Narela mandola ckt-I charged at 14:40 hrs. 20211005135111 2021-10-05 13:51:12 220 KV Mandola ckt-I tripped on distance prot. zone-I 6.31 KM at 13:25 hrs.No load affected. 20211004153518 2021-10-04 15:35:19 Due to heavy spark in Yard 33 KV Bus-coupler made off at 15:10 hrs.later grid staff informed Bus isolator of Bay no-2 and 5 damaged.21 MW load affected. massage conveyed to the Discom for shifting the Load. 20211004151630 2021-10-04 15:16:31 100 MVA tr-III charged at 15:07 hrs. 20211004114517 2021-10-04 11:45:18 100 MVA Tr-III tripped on diffrential,RYB Phase.O/C,E/F,R Phase LA blast at 11:30 hrs. No load affected. 20211002111111 2021-10-02 11:11:12 At 10:22 hrs, Kashmiri Gate Ckt-2 tripped on differential proection. About 40 MW load was affected for 2 mins. 20211001211649 2021-10-01 21:16:50 100 MVA Tr-II charged on NO-Load at 20:40 hrs.Tr. under breakdown from dated 09.06.2021. 20211001141318 2021-10-01 14:13:19 220kV Rohini-1-Bawana ckt 2 normalized at 13:04 hrs. 20211001124025 2021-10-01 12:40:26 At 12:02Hrs, 220kV Mehrauli-Tughlakabad ckt-1 tripped at Mehrauli end while Auto-recloser operated at Tughlakabad end, resulting in tripping of 66kV CBlock-1 and 2, CDot 1 and 2, Malviya Nagar-1 and Ignou ckts on SPR affecting approx. 130 MW load of Mehrauli SStn which was partially shifted by BRPL. All feeders and Tughlakabad ckt normalised by 12:27 Hrs. 20211001104741 2021-10-01 10:47:42 At 09:56 hrs, 220kV Rohini-1-Bawana ckt 2 tripped on RY phs differential. Approx. 60MW Load effected which was normalized on 220kV B/C at 09:57 hrs. 20210930204526 2021-09-30 20:45:33 33KV I/C-II charged at 18:34Hrs and 16MVA T/F-III charged at 18:40Hrs. Presently 33KV I/C-III and 16MVA T/F-IV are still under breakdown. Regards, Delhi SLDC 20210930171137 2021-09-30 17:11:38 At 16:44 Hrs, 33kV Incommmers 2 and 3 tripped along with 33kV Bus-2 and half bus-1. Heavy SF6 Gas leakage reported in GIS chamber. Relays not reported yet by Grid staff. Around 80MW load effected initially, which has been shifted by DiSCOMs. 20210930164236 2021-09-30 16:42:37 Update: 400kV Mundka-Jhatikara Ckt-2 charged at 16:35 hrs. Regards, Delhi SLDC 20210930131957 2021-09-30 13:19:59 400kV Mundka-Jhatikara Ckt-2 tripped on R-N fault at 13:31 hrs. No load was affected. Regards, Delhi SLDC 20210930064704 2021-09-30 06:47:05 At 04:15 hrs, 220 kV Panipat ckt -1 energized. 20210930064652 2021-09-30 06:46:53 At 04:15 hrs, 220 kV Panipat ckt -1 energized. 20210929194611 2021-09-29 19:46:12 At 19:08 hrs, at 220 kV Narela, 220 kV Panipat Ckt-1 tripped on distance protection, SOTF, EF. R phase LA found damaged. No load affected. 20210929194546 2021-09-29 19:45:47 At 19:08 hrs, 220 kV Panipat Ckt-1 tripped on distance protection, SOTF, EF. R phase LA found damaged. No load affected. 20210928231413 2021-09-28 23:14:14 220 KV Narela-rohtak road ckt-II charged at 22:20 hrs. 20210928231409 2021-09-28 23:14:13 220 KV Narela-rohtak road ckt-II charged at 22:20 hrs. 20210928182333 2021-09-28 18:23:34 At 17:14 hrs:220 KV Rohtak road ckt-II tripped on Distance Prot.,B phase,earth fault,2.89 km.No Load affected. 20210928104504 2021-09-28 10:45:06 220KV Bamnoli-PPK-2 ckt 2 tripped on RYB differential, 86 RYB at 09:42. due to overloading T/F-1 also tripped on LBB,OC,86 which was on ckt-1. after clearance load was taken through 66KV B/C at 09:44 and T/F-1 charged on 09:48. load affected due to ckt-2 tripping: 124MW and T/F-1 tripping:50MW. 20210927193726 2021-09-27 19:37:27 Update: 200kV Narela Mandola ckt 2 energized at 18:38 hrs. 20210927161418 2021-09-27 16:14:19 (14:14 hrs)220KV Mandola ckt-II tripped from both ends on differential protection Y and B phase. No load affected since load was taken by Mandola -Narela ckt-I. 20210924115337 2021-09-24 11:53:38 At 11:05 hrs: supply from 220 kV Mandola failed with no tripped reported from GPL end. Load taken on SoW Ckt1 at 11:08 hrs. DTL team is patrolling the circuit. 20210923192302 2021-09-23 19:23:04 220 KV Pragati-Parkstreet ckt-II charged at 19:14 hrs.on NO Load.ckt under breakdown since 30.07.2021. 20210921163143 2021-09-21 16:31:44 100MVA T/F-2 made off by grid staff due to higher concentration of acetylene gas at 16:25Hrs. Regards, Delhi SLDC 20210921160913 2021-09-21 16:09:13 400KV Jhatikra ckt-II charged at 15:24Hrs. Regards, Delhi SLDC 20210921144411 2021-09-21 14:44:14 400KV mundka-jhatikara ckt-2 tripped on distance protection Zone-1, R-ph, distance-8KM, If=17Kamps, 86A and B at 13:58Hrs. Note: ckt was in charge position from jhatikara and CVT was available at mundka, ckt was tripped only at Mundka stn. Note: No load was affected. 20210920155330 2021-09-20 15:53:31 16MVA MVA T/F charged at 15:35Hrs. Regards, Delhi SLDC 20210920150211 2021-09-20 15:02:12 16MVA T/F tripped on differential, 86 relay at 14:22Hrs load affected: 145Amps, 20MVA T/F was already under shutdown. Discoms are informed to shift their 11KV load from K.gate stn 20210919165113 2021-09-19 16:51:14 At 16:33 hrs:33 Kv Nehru place ckt-IV tripped on RYB phase distance prot.B phase jumper snapped of the same.alongwith 33 Kv incomer-5 tripped on Earth fault.40 Mw load affected,shifted by BRPL.at 16:42 hrs incomer-5 charged. 20210913165454 2021-09-13 16:54:55 220KV Bamnauli ckt-I charged at 16:53Hrs. Regards, Delhi SLDC 20210913141442 2021-09-13 14:14:43 100MVA T/F-3 charged at 13:28Hrs. Regards, Delhi SLDC 20210913120256 2021-09-13 12:02:56 220KV Bamnoli-Dail ckt-1 tripped at 11:48Hrs, Relay Bamnoli:Zone-1, distance-3.2Km, If=17.06Kamps, 186A and B. Relay Dail: R-ph trip, L-E fault, Zone-2,13.5Km. 20210913103636 2021-09-13 10:36:36 100MVA T/F-3 tripped on SPR at 10:27Hrs. No load was affected. Regards, Delhi SLDC 20210912143830 2021-09-12 14:38:31 220KV Pragati-maharanibagh ckt charged at 14:04Hrs 20210912132244 2021-09-12 13:22:45 At 220KV Pragati-maharanibagh ckt tripped at 12:52Hrs, Rly at M.bagh: L-E fault, distance:3Km, If=3kAmps. Rly at Pragati: trip-ph A, zone-1, O/C, E/F, Ia=15KAmps, distance:1.52Km, 186. No Load was affected. 20210912104007 2021-09-12 10:40:07 At 220KV Trauma center: 100MVA T/F-1 tripped on SPR realy at 10:01Hrs, No Load was affected. 20210911162150 2021-09-11 16:21:51 160 MVA tr-I charged at 16:12 hrs. 20210911145202 2021-09-11 14:52:04 160 MVa Tr-II charged at 14:37 hrs. 20210911140552 2021-09-11 14:05:53 66 KV I/C-II charged at 14:03 hrs. 20210911140504 2021-09-11 14:05:05 160 MVA Tr-III charged at 14:02 hrs. 20210911134109 2021-09-11 13:41:10 160 MVA-tr-I tripped on Buchholz relay at 13:13 hrs. No load affected. 20210911131424 2021-09-11 13:14:25 220 KV Naraina-Dwarka ckt-II charged at 12:59 hrs. 20210911124723 2021-09-11 12:47:24 400 KV Bamnauli-Jhatikara ckt-II charged at 12:34 hrs. ckt was tripped at 05:58 hrs. 20210911085942 2021-09-11 08:59:42 (07:05hrs):: 220KV Dwarka -II tripped from both ends on R phase, 08.5KA fault. No load is affecetd. 20210911085803 2021-09-11 08:58:04 (08:28hrs):: 66KV I/C-II tripped on 86. No load is affected. 20210911085700 2021-09-11 08:57:01 (07:58hrs):: 160MVA-II tripped on pole discrepancy. No load is affected. 20210911085500 2021-09-11 08:55:01 (08:07hrs):: 160MVA-III tripped on oil winding temp high, bucholz trip, transformer trouble alarm. No load is affecetd. 20210908082716 2021-09-08 08:27:17 220 KV SOW - K gate ckt-I Charged at 08:22 hrs. 20210907184834 2021-09-07 18:48:35 As reported, 220kV Rajghat ckt -1 Y-Ph, Line side Dropper conductor damaged. 20210907184505 2021-09-07 18:45:05 18:39Hrs, Kashmiri Gate- Wazirabad ckt-1 Tripped, Y-Ph Distance Prot, Z-1, 1.24Kms, Load 68MW Affected for 1 Min. 20210907184031 2021-09-07 18:40:32 18:20HRs, IP- Rajghat ckt 1 tripped on Distance Protection R,Y,B Phase. Load shifted by Discom. 20210907175107 2021-09-07 17:51:08 220 KV Mandola-Gopalpur ckt-I charged at 17:10 hrs. 20210907175010 2021-09-07 17:50:11 33 KV I/C-V charged at 17:20 hrs. 20210907143440 2021-09-07 14:34:41 220kV Mandola ckt 1 tripped on R-Y phase fault at 14:16 hrs effecting approximately 70 MW load which was normalized by closing 220kV South of Wazirabad ckt 2 at 16:18 hrs. 20210907074444 2021-09-07 07:44:45 33KV I/C-1 charged at 01:20Hrs 20210907011447 2021-09-07 01:14:48 33KV I/C-V tripped on E/F at 01:05Hrs. Load affected was 25MW. Load normalised through 33KV B/C at 01:10Hrs. Regards, Delhi SLDC 20210907005436 2021-09-07 00:54:37 100MVA T/F-2 tripped on differential Y-phase at 00:40Hrs. Load affected was 54MW. BRPL have shifted the load. Regards, Delhi SLDC 20210906234121 2021-09-06 23:41:22 33KV I/C I and II tripped on E/F O/C with the tripping of 33KV Pusp Vihar at 23:10Hrs. Load affected was 92MW. Load normalised after charging 33KV I/C-II at 23:30Hrs. Regards, Delhi SLDC 20210905153946 2021-09-05 15:39:46 220KV Pragati ckt charged at 15:33Hrs. Regards, Delhi SLDC 20210905140040 2021-09-05 14:00:40 220KV Pragati ckt tripped on Z-1 R-phase 2.5km at 13:43Hrs. No load was affected. Regards, Delhi SLDC 20210905133908 2021-09-05 13:39:09 20MVA T/F-1 tripped on 86 directional RYB-phase O/C B-phase with heavy sound at 12:42Hrs. Load affected was 2.5MW. Regards, Delhi SLDC 20210905121112 2021-09-05 12:11:13 220KV Rohtak Road ckt-II charged at 11:36Hrs. Regards, Delhi SLDC 20210905104836 2021-09-05 10:48:37 20MVA T/F-1 charged at 10:41Hrs. Regards, Delhi SLDC 20210905100936 2021-09-05 10:09:37 20MVA T/F-1 tripped on 86 at 09:34Hrs. Load affected was 2MW. Load normalised through bus section at 09:41Hrs. Regards, Delhi SLDC 20210905074917 2021-09-05 07:49:18 07:37Hrs Narela Rohtak Road CKt 2 tripped on Distance Prot Z-1 , 5.2Kms. No Load Affected. 20210904210510 2021-09-04 21:05:11 20:30HRs 20 MVA Tr No 1 tripped on O/C , E/f during charging of a local transformer of 300kVA which was under shutdown. 20:55HRs 20 MVA TR No 1 charged. Total 1 MW Load affected for 25Min during charging of Local transformer. 20210904202833 2021-09-04 20:28:33 160 MVA tr-II charged at 20:13 hrs.tr.was tripped at 13:14 hrs. 20210904185402 2021-09-04 18:54:03 160 MVA tr charged at 18:35 hrs. transformer under B/D since 13:55 hrs dated 03.09.21 . 20210904165651 2021-09-04 16:56:52 220KV Pragati ckt I and II charged at 16:30Hrs. Regards, Delhi SLDC 20210904143008 2021-09-04 14:30:09 2220KV Pragati ckt-I tripped on 86 differential Z-3 15km, 220KV Pragati ckt-II tripped on Z-1 R-phase 1.69km at 13:15Hrs. 160MVA T/F-1 of GT tripped on differential at 13:17Hrs and 160MVA T/F-2 of GT tripped on differential at 13:14Hrs consequently GT-1 and STG of Pragati tripped. Load affected was 150MW of Park Street and 80MW of GT. Load of Park Street normalised at 13:28Hrs through Pragati-Maharani Bagh ckt. and load of GT normalised through 160MVA T/F-1 at 13:30Hrs. Regards, Delhi SLDC 20210904092220 2021-09-04 09:22:20 At 08:12 hrs, Y and B-phase jumpers of 33kV Tughlakabad ckt-2 snapped leading to tripping of all 33kV Incommers 3,4 and 5 on over current. approx-40 MW load effected which was diverted to other sources by BRPL. 20210903162439 2021-09-03 16:24:40 16:20HRs 220kV Sarita Vihar Maharanibagh ckt charged 20210903155729 2021-09-03 15:57:29 15:55Hrs 100MVA Tr-2 charged 20210903141756 2021-09-03 14:17:57 AT 13:40hRS, Due tripping of 220kV Rajghat supply at SLDC Minto Road building fail, resulting tripping of SCADA server. 20210903141420 2021-09-03 14:14:21 At 13:55Hrs 160MVA Transformer tripped on ORS, Load normalize through 66kV Bus Coupler at 14:00 Hrs Load affected 45MW for 5 Min 20210903141315 2021-09-03 14:13:16 13:40Hrs 100MVA Tr-2 tripped on SPR, Load shifted by discom, Load normalize through 33kV Bus coupler at 13:50 Hrs. Total Load affected 55MW for 2 Min 20210903132806 2021-09-03 13:28:09 At 13:13 Hrs Sarita vihar- Maharanibagh ckt tripped on both ends at Distance Protection, Z-1 R-Phase, 8.38 Kms, No load affected 20210902140850 2021-09-02 14:08:51 220 KV Narela-Mandola ckt -II charged at 12:19 hrs. 20210902021749 2021-09-02 02:17:50 100MVA T/F-3 charged at 02:09Hrs and load taken at 02:12Hrs. 20210902000623 2021-09-02 00:06:25 220KV Mandola ckt-2 tripped on AR lockout, trip phase A-N, distance-23.73Km, 186, 86A and B and C. 100MVA T/F-3 tripped on differential RYB, 86 A and B, E/F. tripping time:23:37Hrs. Note: NO LOAD was affected. 20210901135119 2021-09-01 13:51:20 220KV Pragati ckt which had earlier tripped at 07:45hrs has been energized and load taken at 12:35hrs. 20210901082845 2021-09-01 08:28:46 220kV Maharani Bagh - Sarita Vihar Ckt tripped on distance protn at 07:45 hrs. No-load is affected. Regards, Delhi SLDC 20210831205208 2021-08-31 20:52:09 220/66kV 100MVA Tx-2 tripped on RYB phase, HVCB, LVCB alongwith 66kV I/C-2 at 19:55 hrs. Approx. 30 MW load affected which shifted by BRPL. Also, 11kV load of 66/11kV 20MVA Tx-2 normalized through bus-section at 20:10 hrs. Regards, Delhi SLDC 20210827185238 2021-08-27 18:52:38 220 KV sarita Vihar-M bagh ckt charged at 18:45 hrs. 20210827181139 2021-08-27 18:11:40 220 KV sarita Vihar-M bagh ckt tripped on distance prot. Zone-I B phase,6.05 Km. at 17:44 hrs.No load affected. 20210827171023 2021-08-27 17:10:23 220KV Sarita Vihar ckt charged at 17:03Hrs. Regards, Delhi SLDC 20210827142711 2021-08-27 14:27:12 220KV Wazirabad ckt-II charged at 14:24Hrs. Regards, Delhi SLDC 20210827134947 2021-08-27 13:49:48 220KV Sarita Vihar tripped on C-phase Z-1 2.05km O/C E/F at 13:34Hrs. No load was affected. Regards, Delhi SLDC 20210827134426 2021-08-27 13:44:29 220KV Wazirabad ckt-2 tripped on AR, 186 A and B, Line differential R and B-ph at 13:01, Load affected: 46MW, Load normalized through 220KV B/C at 13:01. Regards, Delhi SLDC 20210826125717 2021-08-26 12:57:18 12:50Hrs 220KV BTPS -Sarita Vihar CKT-1 charged 20210826122516 2021-08-26 12:25:17 12:05 Hrs Due to arriving of monkeys 33kV incomer of 100MVA Tr-1 and 2 were manually switched off by concerned O and M department as precautionary measure. Same were restored at 12:09 Hrs. 110 MW Load affected from 12:05 Hrs to 12:09 Hrs. 20210826102723 2021-08-26 10:27:29 10:10Hrs Ghazipur Patparganj Ckt chraged 20210826085257 2021-08-26 08:52:58 At 08:00 hrs. 220KV BTPS CKT-1 tripped w/o indication. No load affected. 20210825124921 2021-08-25 12:49:22 12:47Hrs Wazirabad-Gopalpur ckt2 charged 20210825121328 2021-08-25 12:13:30 At 12:04Hrs TKD-BTPS ckt 1 charged 20210825105502 2021-08-25 10:55:03 At 10:25Hrs Rajghat IP ckt 1 tripped without indication, Load shifted by discom. 20210825100845 2021-08-25 10:08:46 9.56HRs BTPS-Tughlkabad Ckt1 Distance PRot Z-1, B-Ph 1.5Kms, No Load Affected 20210825100220 2021-08-25 10:02:20 08.58HRs, 220kV Wazirabad-Gopalpur Ckt 2 Tripped on Distance Prot, E/f, 7.7 Kms 20210824202816 2021-08-24 20:28:18 220KV Mandaula ckt-II charged at 20:26Hrs. Regards, Delhi SLDC 20210824190647 2021-08-24 19:06:56 220KV Mandaula ckt-II tripped on B-phase differential at 18:50Hrs. No load was affected. Regards, Delhi SLDC 20210823070952 2021-08-23 07:09:53 Bawana-CCGT Bawana Interconnector ckt-I tripped on Pole Discrepancy at 00:59 hrs. no load affected. 20210822193317 2021-08-22 19:33:18 19:30Hrs 220kV Pragati-Sarita Vihar Ckt charged 20210822172406 2021-08-22 17:24:07 220 Kv Pragati-Sarita Vihar ckt tripped on Distance prot.Zone -I,3.69 Km,B phase at 17:08 hrs.No load affected. 20210821165212 2021-08-21 16:52:13 At 16:50 hrs, 315 MVA ICT-3 energized. 20210821150715 2021-08-21 15:07:16 220kV Sarita Vihar-BTPS Ckt-2 charged at 13:36 hrs. Regards, Delhi SLDC 20210821092556 2021-08-21 09:25:56 06:53hrs BTPS-I normalized. (07:00hrs) Maharani bagh normalized. 20210821092023 2021-08-21 09:20:24 (At 06:39hrs):: Supply fail from 220KV BTPS-I and 220 KV BTPS-II tripped on D/P and 19KA B phase(RYB)line to ground fault. 220KV Maharani Bagh also tripped on C phase fault(ABC). NO load affected. 20210821090611 2021-08-21 09:06:11 Narela:: load of Narela normalized through 220Kv B/C at 04:58hrs. DSIIDC:: Load of DSIIDC normalized through 220KV Bawana I and II. 220KV Narela-Mandola ckt I and II normalized at 06:00hrs. 20210821090236 2021-08-21 09:02:36 (At 04:52hrs)::220KV Mandola ckt-I and II , supply fail from Mandola on DT receive signal. Load of Narela as well as Partial load of 220KV DSIIDC also affecetd. 20210821085908 2021-08-21 08:59:09 (At 03:40hrs):: 315MVA ICT-III tripped on Bucholz relay. No load affected. 20210820140059 2021-08-20 14:00:59 At 220KV Sabzi Mandi 16MVA T/F-1 and 2 tripped along with their I/C, Relay on both T/F: OC, RYB-ph trip, 86 and relay on I/C-1: without indication, I/C-2: OC, B-ph. time:12:25, No Load was affected. 20210820135131 2021-08-20 13:51:33 220KV Mandaula ckt-II charged at 13:50Hrs. Regards, Delhi SLDC 20210820100351 2021-08-20 10:03:52 220KV Mandaula ckt-II tripped without indication at 09:25Hrs. CVT coming at Narela end. No load was affected. Regards, Delhi SLDC 20210819224251 2021-08-19 22:42:51 220 KV Bawana-Kanjhawla ckt-I charged from Bawana End through TBC at 22:14 hrs. 20210819224209 2021-08-19 22:42:10 220 KV Bawana-Kanjhawla ckt-I charged from Bawana End through TBC at 22:14 hrs. 20210819214317 2021-08-19 21:43:18 At 20:58 Hrs:220 KV Bawana-Kanjhawala ckt-II tripped on distance prot.R phase, 9.3 Km,R phase LA blast reported at kanjhawala End. Bawana-Kanjhawala ckt -I made off due to heavy sparking in R phase CT at 400 KV Bawana Yard (21:35 hrs).No Load affected. 20210819195337 2021-08-19 19:53:38 220 KV Bawana-Kanjhawala ckt-I charged at 18:55 hrs and ckt-II charged at 19:41 hrs. 20210819122510 2021-08-19 12:25:11 Supply fail of 220KV Bawana ckt-I and 220KV Bawana ckt-II at 11:40Hrs. Relay at Bawana end on Kanjhawala ckt-I are R-phase Z-1 4.6km and on Kanjhawala ckt-II are RB-phase Z-2 25.26km. Load affected was 200MW. Load normalised through Najafgarh ckt at 11:57Hrs. Regards, Delhi SLDC 20210819060810 2021-08-19 06:08:11 Pragati Unit no 2 tripped at 04:46 hrs. Generation loss 140 MW Approx. 20210818130656 2021-08-18 13:06:57 At 12:46Hrs, 220kV Narela-Mundka ckt 2 tripped, distance Protection 3-Ph, 4.29Kms, 5.836 KA Relays 20210817143805 2021-08-17 14:38:06 At 14:15 16MVA Transformer No. Charged 20210817133425 2021-08-17 13:34:28 220kV NJF-BML ckt 1 Restored at 12.00 HRs 20210817120421 2021-08-17 12:04:21 100MVA TR-2 33kV Incomer charged at 11:43 Hrs with 33kV Bus 2, 33kV Y and B phase CB Pole of Bus coupler are reported damage. 20210817104341 2021-08-17 10:43:42 100MVA Transformer No-1 Incomer charged at 9.58 Hrs 20210817101202 2021-08-17 10:12:03 9:36Hrs 33kV Incomer of 100MVA Tr No 1 and 2 Tripped on O/c and E/F Respectively, 33kV Bus Bar operated at O/c, E/F 10MW Load affected from 9.36 Hrs to 9.58 Hrs. 20210817071217 2021-08-17 07:12:18 At 220KV sabji mandi:16MVA PTR-1 tripped on differential B and C-ph and 86 at 05:45hrs, Load affected:30Amps, Load was normalised through 11KV bus-section. 20210817070932 2021-08-17 07:09:33 At 220KV NJGH: 220KV Bamnoli ckt-1 tripped at 06:07hrs without any relay indication, Load was taken on 220KV mundka-NJGH ckt. 20210817035636 2021-08-17 03:56:37 At 220KV PPG: 220KV IP Power ckt-2 restored at 03:55hrs. 20210817033053 2021-08-17 03:30:54 At 220KV PPG: 220KV IP Power ckt-2 tripped on relay 186 at 03:05hrs. Note: ckt is in charge position at IP end. 20210816203153 2021-08-16 20:31:54 220KV Maharani Bagh ckt-II charged at 20:22Hrs. Regards, Delhi SLDC 20210816193529 2021-08-16 19:35:29 220KV Maharani Bagh ckt-II tripped on YB-phase Z-1 0.8km at 19:03Hrs. No load was affected. Regards, Delhi SLDC 20210816190448 2021-08-16 19:04:49 400KV Jhajhar ckt-I tripped on RYB-phase 0.3km at 18:37Hrs. No load was affected. Regards, Delhi SLDC 20210816185531 2021-08-16 18:55:31 220KV Maharani Bagh ckt-I charged at 18:50Hrs. Regards, Delhi SLDC 20210816182808 2021-08-16 18:28:09 220KV Maharani Bagh ckt-I tripped on Z-1 RY-phase 6.6km at 17:53Hrs. No load was affected. Regards, Delhi SLDC 20210816080520 2021-08-16 08:05:21 33kV I/C-1 and I/C-2 charged at 07:48 hrs. and load taken. Regards, Delhi SLDC 20210816073712 2021-08-16 07:37:13 Due to monkey electrocution, both 33kV I/C-1 and I/C-2 tripped at 07:04 hrs. Y and B phase CTs of 33kV Hanuman Road Ckt blast. Load shifted by NDMC/BYPL. Regards, Delhi SLDC 20210815191227 2021-08-15 19:12:28 100MVA Tx-1 and 2 tripped along with 220kV Gopalpalpur ckt 2 on master relay at 17:40 Hrs due to multiple kite threads in yard, effecting approximately 13 MW load which was shifted by DISCOMS. At 18:10, 100MVA -1 normalized and at 18:34 100MVA -2 normalized on Gopalpur ckt -1 after removal of threads. 20210815181908 2021-08-15 18:19:08 Update: 220kV Gazipur-Maharani Bagh Ckt-2 charged at 18:17 hrs. and load taken. Regards, Delhi SLDC 20210815180700 2021-08-15 18:07:00 Update: 400kV Mundka-Jhatikara Ckt-2 charged at 12:52 hrs. and load taken. Regards, Delhi SLDC 20210815180408 2021-08-15 18:04:09 Update: 33kV I/C-2 and I/C-3 charged at 17:15 and 17:10 hrs. respectively and load taken. Presently, 33kV I/C-1 and Shivalik Ckt is under B/D and is being attended by mtc. Regards, Delhi SLDC 20210815175623 2021-08-15 17:56:24 Update: 220kV IP-RPH Ckt-2 and 220kV IP-PPG Ckt-1 charged at 15:58 hrs. and 16:36 hrs. respectively and load taken. Regards, Delhi SLDC 20210815161412 2021-08-15 16:14:13 At 15:25hrs::33KV I/C I,II and III tripped on O/C and E/F. 33KV Common jumper of Shivalik feeder flashed along with 33KV bus I and II. Thus no load can be served presently from Masjid Moth station. 20210815153913 2021-08-15 15:39:14 220 kv ckt#1 of RPH s/stn restored at 15:24 hrs. from 220kv IP s/stn.Load is normal now. 20210815152246 2021-08-15 15:22:46 Both 220 kv ckts of RPH s/stn and ckt#1 of 220 kv PPG tripped from 220 kv IP s/stn. No load affected from 220 kv PPG and approx. 35 MW load affected from 220kv RPH s/stn 20210815092032 2021-08-15 09:20:33 AT 08:55 HRS: Mundka-Jhatikara ckt-II tripped on distance prot. Y and B phase,4.97 km ,Iy=24.11 KA,Ib=25.7 KA,no load affected. 20210815090540 2021-08-15 09:05:41 220 KV Gazipur-Mbagh ckt-II tripped on distnace prot.R and Y phase.4.8 km at 08:42 hrs. No load affected.At 09:01 hrs ckt charged. 20210814211105 2021-08-14 21:11:06 20:53 HRs, Gopalpur-Sabzimandi ckt2 charged. 20210814195616 2021-08-14 19:56:16 19:51Hrs, 100MVA Tr-1 charged 20210814185506 2021-08-14 18:55:07 18:34HRs, Gopalpur-Sabzimandi ckt2 tripped Distance prot Z-1, 2.76Kms 20210814185505 2021-08-14 18:55:06 18:34HRs, Gopalpur-Sabzimandi ckt2 tripped Distance prot Z-1, 2.76Kms 20210814185457 2021-08-14 18:54:58 18:34HRs, Gopalpur-Sabzimandi ckt2 tripped Distance prot Z-1, 2.76Kms 20210814182848 2021-08-14 18:28:49 18:10Hrs, 100MVA TR No1 Tripped without indication 20210812164610 2021-08-12 16:46:10 220KV Mandaula ckt-I charged at 16:31Hrs. Regards, Delhi SLDC 20210812154235 2021-08-12 15:42:36 220KV Mehrauli ckt-II tripped on Z-1 R-phase 3.8km at 15:11Hrs. No load was affected. Regards, Delhi SLDC 20210812141719 2021-08-12 14:17:20 220KV Mandaula ckt-I tripped on distance relay RY-phase at 14:00Hrs. No load was affected. Regards, Delhi SLDC 20210811223632 2021-08-11 22:36:33 While changeover the load of Najafgargh from 220 KV Kanjhawala-Mundaka to 400 KV Bamnauli,160 MVA Tr-II and 66 KV I/C-IV tripped without indication at 22:10 hrs.119 MW load affected.At 22:18 hrs I/c-IV and at 22:20 Hrs Tr-II charged. 20210811202722 2021-08-11 20:27:23 at 16:40 hrs:shutdown availed on 20 MVA Tr-I for bus cleaning. Bus charged at 20:18 Hrs but due to Tripping coil problem 20 MVA Transformer-I could not be charged today.No load affected. 20210809165920 2021-08-09 16:59:21 16:12HRs, 160MVA Tr-No.1 Charged on No-Load, The Transformer under shutdown due to Sf-6 Gas Leakage in GIS of 66kV Incomer No.1 chamber. 20210809152421 2021-08-09 15:24:22 Corrigendum: Generating Station Pragati GT-2 synchronized at 14.07 Hrs and STG is synchronized 14.52 HRs 20210809152219 2021-08-09 15:22:21 Generating Station Pragati GT-2 and STG synchronized at 15.07 Hrs 20210809123106 2021-08-09 12:31:07 Generating Unit GT-2 and STG at Pragati tripped at 12.21 HRs 20210808134047 2021-08-08 13:40:47 At 13:09 hrs, at 220 kV GPL, 66 kV Incomer - 4 energized. 20210808133944 2021-08-08 13:39:44 At 12:50 hrs, 66 kV Incomer - 4 tripped affecting about 40 MW load. 20210806150729 2021-08-06 15:07:30 220kV Narela-Rohtak Road Ckt-1 energized at 14:20 hrs. 20210806134456 2021-08-06 13:44:57 160 MVA Tx-1 put off as SF6 gas pressure in GIS chamber BP3 of 66 kV Incomer-I found low. Shall be attended by OEM as per SGTN staff. 20210806131635 2021-08-06 13:16:36 220kV Narela-Rohtak Road Ckt-1 and Ckt-2 tripped at 12:47 and 12:59 hrs. respectively on distance protn. Informed to BBMB. Regards, Delhi SLDC 20210806052017 2021-08-06 05:20:18 At 220KV Okhla 66/33KV I/C-1 tripped on E/f and 86 at 04:05Hrs. Load affected:5MW, Load normalised through Bus section at 04:33Hrs. 20210805182749 2021-08-05 18:27:50 220KV Maharani Bagh ckt-II charged at 18:25Hrs. Regards, Delhi SLDC 20210805165506 2021-08-05 16:55:07 220kV Pragati-Sarita Vihar Ckt charged at 15:42 hrs. 20210805144038 2021-08-05 14:40:39 220kV Maharani Bagh-Lodhi Road Ckt-2 tripped only from Maharani Bagh end on distance protn. Z-1, Z-2, 3.5kM, L1=21.28kA, L2=21.13kA, L3=0.11kA at 14:24 hrs. Approx. 40MW affected load of Lodhi Rd. normalized through 220kV B/Coupler at 14:27 hrs. Regards, Delhi SLDC 20210805124213 2021-08-05 12:42:14 220kV Pragati-Sarita Vihar Ckt tripped on distance protn. at 11:51 hrs. No load is affected. Line is being patrolled by mtc. staff. Regards, Delhi SLDC 20210804211757 2021-08-04 21:17:58 At 19:52hrs , 20MVA-I normalized, however 11KV bus section tripped W/I with a huge sound , as such 11KV half bus bar still remains affected. 20210804205909 2021-08-04 20:59:11 At 18:08hrs while normalizing 20MVA-II(was under S/D from 07:50hrs), 20MVA-II tripped on E/F , O/C and differential. Along with 20MVA-I on SPR. All 11KV load of Kanjhawla affected(approx. 8MW) 20210804082242 2021-08-04 08:22:43 20 MVA Tr-I tripped on RYB Phase,86 at 08:00 hrs.3 MW load affected. Load normalized through 11 KV Bus section at 08:09 hrs. 20210803202619 2021-08-03 20:26:20 100 MVA Incomer No-2 charged at 20:10 Hrs. 20210803200118 2021-08-03 20:01:19 100MVA Incomer No-2 Tripped on E/f at 19:27Hrs, Load shifted by Discom. 20210803173753 2021-08-03 17:37:54 17:34 HRs 20MVA power transformer no.-IV is shut Down due to high H2 contents in DGA Tests. 20210803135447 2021-08-03 13:54:48 The Shutdown of 100MVA Power Transformer no-2 EMCO, make dt.03.08.2021 was taken for carrying testing of said transformer. During testing of tan delta of 220kV and 33kV bushing, the result of R phase 33kV bushing, tan delta value was high i.e. 4.36 and the same needs to be replaced. For replacing 33kV Bushing of 100MVA Power Transformer no-2 , another 3 to 4 days shutdown is required to carry the replacing of said bushing followed by filtration and testing as informed by substation staff 20210802201041 2021-08-02 20:10:42 220/33kV 100MVA Tr-2 charged at 18:01 hrs. and load taken. Regards, Delhi SLDC 20210802174525 2021-08-02 17:45:26 220kV SOW-Geeta Colony Ckt-1 charged at 17:30 hrs. Regards, Delhi SLDC 20210802164748 2021-08-02 16:47:51 16:35Hrs Geeta Colony Ckt 1 Tripped on Distance Prot Z-1 R and Y Phase, 5.07Kms 20210802135630 2021-08-02 13:56:31 100 MVA Tr-II charged at 13:40 hrs. 20210802125857 2021-08-02 12:58:58 12.42 HRs 315 Tr No1 Charged. 20210802123923 2021-08-02 12:39:24 12.21 Hrs 100MVA Tr-1 Charged along 33kV Bus I and II 20210802121518 2021-08-02 12:15:19 12.08HRs 315MVA Transformer No.1 tripped without indication, No Load affected. 20210802114157 2021-08-02 11:41:58 11.25HRs 100 MVA Tr-II tripped on SPR at 16:55 hrs.No load affected. 20210802090610 2021-08-02 09:06:10 At 07:28 hrs, (220/33) 100 MVA 1 and both 33kV Incomers tripped as two monkeys got electrocuted and injured. Y phase CT of the transformer got damaged and about 44 MW load was affected. Later, at about 07:43 hrs, one of the monkeys got up and climbed up power equipment again, tripping 100 MVA-2 as well. A group of monkeys also arrived, encircling the injured monkey down on the ground, as per operation staff reporting. Presently, 4 MW BYPL load is still affected. Both transformers and their incomers are being examined by DTL maintenance staff. 20210802090526 2021-08-02 09:05:27 At 07:28 hrs, (220/33) 100 MVA 1 and both 33kV Incomers tripped as two monkeys got electrocuted and injured. Y phase CT of the transformer got damaged and about 44 MW load was affected. Later, at about 07:43 hrs, one of the monkeys got up and climbed up power equipment again, tripping 100 MVA-2 as well. A group of monkeys also arrived, encircling the injured monkey down on the ground, as per operation staff reporting. Presently, 4 MW BYPL load is still affected. Both transformers and their incomers are being examined by DTL maintenance staff. 20210801171538 2021-08-01 17:15:39 100 MVA Tr-II tripped on SPR at 16:55 hrs.No load affected. 20210801163259 2021-08-01 16:33:00 15.40Hrs : 220kV Narela Panipat Ckt 1, Auto-reclosed, Distance Protection Z-1 R-Ph. 29.4Kms 20210731210137 2021-07-31 21:01:37 220KV SOW ckt-I charged at 20:43Hrs. Regards, Delhi SLDC 20210731192610 2021-07-31 19:26:11 220KV SOW ckt-I tripped on Z-1 RYB phase 0.5km at 19:09Hrs. No load was affected. Regards, Delhi SLDC 20210730091842 2021-07-30 09:18:43 220 KV Parkstreet ckt-II tripped on Distance Prot,B phase,8.81 KM at 08:43 hrs.62 MW Load of Parkstreet affected for 2 minute.at 08:45 hrs load normalized through 220 KV Bus coupler at Parkstreet. 20210729192550 2021-07-29 19:25:51 160 MVA tr-II charged at 19:14 hrs. 20210729183035 2021-07-29 18:30:36 while chaging 160 MVA tr-II after availing shutdown.Tr. tripped on Diffrential,O/C,E/F, B phase at 18:15 hrs.No load affected. 20210729001133 2021-07-29 00:11:34 At 220KV Parkstreet 33KV I/C-1 tripped without indication at 23:45Hrs, Load affected:35MW. 33KV B/C made on at 23:56Hrs after yard inspection. 20210728220500 2021-07-28 22:05:01 At 220KV Sabji Mandi, 16MVA T/F-1 tripped on SPR and 86 at 21:15Hrs. Load affected:1.5MW 20210727105056 2021-07-27 10:50:57 160MVA T/F-1, 160MVA T/F-2 and 20MVA Auxiliary T/F charged at 10:23Hrs. Regards, Delhi SLDC 20210727101243 2021-07-27 10:12:43 220KV Panipat ckt-II charged at 10:06Hrs. Regards, Delhi SLDC 20210727084613 2021-07-27 08:46:14 220 KV Narela-PNP ckt-II tripped on distance prot. zone -I RYB Phase at 08:05 hrs. no load affected. 20210727082846 2021-07-27 08:28:47 7.48HRs 20MVA Local Auxiliary Transfer Tripped 66kV Bus bar-I operated Fire reported in switchyard 20210726145631 2021-07-26 14:56:32 100MVA T/F-1 charged at 12:15Hrs. Regards, Delhi SLDC 20210726104133 2021-07-26 10:41:34 220KV SOW ckt-I charged at 10:34Hrs. Regards, Delhi SLDC 20210726103325 2021-07-26 10:33:26 100MVA T/F-1 tripped on SPR at 10:00Hrs. No load was affected. Regards, Delhi SLDC 20210726100735 2021-07-26 10:07:37 220KV SOW-Kashmiri Gate ckt-I tripped without indication at SOW end at 09:38Hrs. Load affected was 30MW. Load normalised through 220KV B/C at 09:51Hrs. Regards, Delhi SLDC 20210725164634 2021-07-25 16:46:35 Corrigendum At 15:39Hrs 220kV Meharuli -Tughalakabad ckt2 220kV Mehrauli: O/c, Auto reclose, 6.3KMs and Jerk observed at 220kV Mehrauli 220kV Tughlakabad: Auto Re close operated, Differential R-Phase, 9.7 KMs 20210725161501 2021-07-25 16:15:02 At 15:39Hrs 220kV Meharuli -Tughalakabad ckt2 220kV Mehrauli: Jerk observed at 220kV Mehrauli 220kV Tughlakabad: Auto Re close operated, Differential R-Phase, 9.7 Kms 20210722225409 2021-07-22 22:54:10 Update: 220kV S/Vihar-M/Bagh ckt energized at 22:50 Hrs. 20210722194755 2021-07-22 19:47:56 220kV Sarita Vihar-Maharanibagh ckt tripped on distance protection, fault location 8.61km from S/Vihar at 19:20 hrs. No load was effected. 20210722132411 2021-07-22 13:24:13 At 12:53, 220kV Bawana-Rohini-1-Ckt-1 energized. DTL Maintenance team is working on 220kV Rohini-1-SMB-ckt 1 20210722132343 2021-07-22 13:23:44 At 12:09 hrs, 220kV Bawana-Rohini-1 Ckt-1 tripped on distance protection at Bawana end and 220 kV Rohini-1-SMB ckt-1 tripped on distance protection at 220kV Rohini-1. Total 60 MW load affected till 12:15. 20210722132315 2021-07-22 13:23:15 At 12:53, 220kV Bawana-Rohini-1-Ckt-1 energized. DTL Maintenance team is working on 220kV Rohini-1-SMB-ckt 1. 20210722131945 2021-07-22 13:19:46 At 12:09 hrs, 220kV Bawana-Rohini-1 Ckt-1 tripped on distance protection at Bawana end and 220 kV Rohini-1-SMB ckt-1 tripped on distance protection at 220kV Rohini-1. Total 60 MW load affected till 12:15. 20210719173213 2021-07-19 17:32:14 160MVA T/F tripped on PRV at 17:17Hrs. Load affected was 40MW. Load normalised through 66KV B/C at 17:24Hrs. Regards, Delhi SLDC 20210719113842 2021-07-19 11:38:43 400KV Bawana-Mandaula ckt-II charged at 11:09Hrs. Regards, Delhi SLDC 20210719090026 2021-07-19 09:00:26 400 kv CB-NO-1852 of 400 KV Mandola ckt-II tripped on 186 A and B at 08:00 hrs. ckt also tripped from Mandola End.No load affected. 20210719083825 2021-07-19 08:38:26 66 KV Incomer-II of 100 MVA tr-II tripped on 86 at 08:07 hrs.29 MW load affected.at 08:09 hrs load normalized through 66 KV bus coupler.Incomer charged at 08:30 hrs. 20210719063305 2021-07-19 06:33:05 Due to Low gas alarm in CB of 220 KV PPK-III ckt-II made off to avoid any lock out condition at 06:23 hrs.No load affected. 20210719063123 2021-07-19 06:31:24 Due to Low gas alarm in CB of 220 KV PPK-III ckt-II made off to avoid any lock out condition.No load affected. 20210718105021 2021-07-18 10:50:22 33KV I/C-I tripped on E/F at 10:26Hrs. Load affected was 84MW as 100MVA 220/33KV T/F-2 was under shutdown. Load normalised after charging 33KV I/C-I at 10:38Hrs. Regards, Delhi SLDC 20210717213231 2021-07-17 21:32:32 160MVA Tx-2 put off on request of Mtc. deptt. due to reducing SF6 Pressure in 66kV Line isolator GIS chamber at 21:12 hrs. 20210717194831 2021-07-17 19:48:32 315 MVA ICT-1 normalized at 19:37 hrs. 20210717192746 2021-07-17 19:27:46 At 18:40 hrs, R Ph. PT of 33kV Wazirpur-2 ckt 2 blasted, AR and 86 relays appeared but CB did not trip at SMB end but other end CB tripped, which resulted in tripping of 33kV I/C - 3 and 33kV Facility Centre ckt 2. About 20MW load effected which was shifted by discom. I/C -3 closed at 19:05 Hrs. 20210717183858 2021-07-17 18:39:04 Update: 220kV Bamnauli-Najafgarh Ckt-2 charged at 18:15 hrs. and load taken. Regards, Delhi SLDC 20210717150955 2021-07-17 15:09:56 220 KV NZF-BAMNLY ckt-II tripped from Bamnauli on distance prot. B phase at 14:45 hrs.125 MW load affected.Load normalized through 220 KV Kanjhawala ckt at 14:50 hrs. 20210717123633 2021-07-17 12:36:35 AT 400 Mundka:315 MVA ICT no.1 tripped on Buchholz relay and ICT no.3 tripped on overloading at 11:30 hrs.ICT no.4 was on already under emergency shutdown.due to this tripping load of 400 Kv Mundka (100 MW), 220 Kv Peeragarghi(136 MW),kanjhawala(MW) and Wazirpur (88 MW) affected.partially load shifted by discoms. at 11:44 hrs ICT-IV charged.and load of Mundka and peeragarh normalised. at 11:47 hrs ICT-III charged. Load of Wazirpur normalised through 220 KV shalimar Bagh at 11:50 hrs.presentally ICT-I under breakdown. 20210717081655 2021-07-17 08:16:56 At 19:30 hrs, 16-7-2021, 100 MVA - 1 energized on no load condition. 20210717010345 2021-07-17 01:03:46 UPDATE: Supply to air-conditioning system of server room and SLDC control room has been restored through temporary arrangement made by BYPL breakdown team. 20210716235144 2021-07-16 23:51:45 URGENT: Airconditioning system of server room and control room is not working since past 30 mins. Concerned officers are advised to get it restored asap to avoid any damage to SCADA/system equipment. 20210716150817 2021-07-16 15:08:23 100MVA Tr No. 1 In/comer charged at 14.27Hrs 100MVA r. NO. 2 and its In/comer charged 14 :29Hrs 11kV supply through 20MVA TR is charged at 14.30HRs, 11kV Load of 9NMW disturbed for 56Min 66kV Feeders charged 14:55HRs, Load Normalize, Following elements are still out 160MVA TR-3, due to snap of 66kV Incomer Jaw jumper (Common jumper) of 160MVA Tr-3 66kV BUS-I will remain out due to snap of 66kV Incomer Jaw jumper (Common jumper) of 160MVA Tr-3. 66kV Ridge valley ckt 2, due to 66kV Bus-II, R and Y-Ph isolator collar damaged. 20210716142335 2021-07-16 14:23:40 At 13:34Hrs: 160MVA Tr-3 Tripped without indication. 160MVA TR No3, 66kV In/Comer tripped on B-Ph, O/Current, BUS-II isolator B-Ph clamp burnt, 66kV B-PH, In/comer jaw Jumper snapped. 100MVA-2 Tripped on O/C, E/F, R Phase and 86 indication. 100MVA TR-No.2 66kV In/comer tripped on O/c, E/F, R-Ph,. 100MVA-1 Not tripped. 100MVA TR-No.1 66kV In/comer tripped on 86. 66kV Ridge valley ckt 2, 66kV Bus-II, R and Y-Ph isolator collar damaged. Load shifted by Discom. 124 MW, Load affected for 5Min. Load of 11kV load still not normalize. 20210714201016 2021-07-14 20:10:21 Update: 400/220kV 315 MVA ICT-1 charged at 19:49 hrs. Regards, Delhi SLDC 20210714173054 2021-07-14 17:31:00 400/220kV 315 MVA ICT-1 tripped on PRD, 86 at 16:42 hrs. No load affected. Regards, Delhi SLDC 20210714070321 2021-07-14 07:03:23 220 KV PPK-II-BMNLY ckt-II tripped on distance prot.R and Y phase at 01:20 hrs.CVT available from BMNLY end.ckt charged at 01:22 hrs.115 MA Load affected for 2 Minutes. 20210713143948 2021-07-13 14:39:49 Update: 1 220/66kV 160MVA Tx-2 at Papankalan-3 energized at 13:37 hrs. 2. 220/66kV 100MVA Tx-2 at Mehrauli energized at 11:50 hrs. 3. 220/33kV 100MVA Tx-5 at Okhla energized at 14:24 hrs. Regards, Delhi SLDC 20210713103942 2021-07-13 10:39:43 220/66kV 100 MVA Tx-2 tripped on OLTC Buchholz and OSR at 10:00Hrs.No load was affected. Regards Delhi SLDC 20210713103650 2021-07-13 10:36:51 220/33kV 100MVA Tx-5 tripped on PRV at 09:29 Hrs. approx 18MW load was affected, which partially shifted by BRPL. Load normalized through 33kV Bus Coupler at 10:11 Hrs. Regards, Delhi SLDC 20210713090817 2021-07-13 09:08:18 160MVA T/F-2 tripped on differential RYB-phase at 08:27Hrs. Load affected was 45MW. Load normalised through 66KV B/C at 08:30Hrs. Regards, Delhi SLDC 20210713074332 2021-07-13 07:43:33 TEST MESSAGE, IGBORE PLEASE 20210713063024 2021-07-13 06:30:25 220KV Ballabgarh ckt-I tripped on distance relay R-phase 24.7km at 04:58Hrs. No load was affected. Regards, Delhi SLDC 20210712120529 2021-07-12 12:05:31 315MVA ICT-I charged and load taken at 11:58Hrs. Regards, Delhi SLDC 20210712105452 2021-07-12 10:55:04 Hi, This is a test message to check delivery of message. you are requested to please ignore it. Thanks Delhi SLDC 20210711205038 2021-07-11 20:50:39 (20:47hrs):: 315MVA ICT-I energized on No Load. 20210710221742 2021-07-10 22:17:43 Corrigendum :- 100MVA Transformer No2 Incomer charged at 21.24HRs. Load shall be normalize by discom 20210710212705 2021-07-10 21:27:06 100MVA Transformer No2 charged at 21.24HRs. Load shall be normalize by discom 20210710201044 2021-07-10 20:10:45 At 220 KV Peeragarhi:100 MVA tr-I tripped On Diffrential at 09:58 hrs dated 10.07.21.AM(T) mtc informed magnetizing current rising in HV side R phase winding. 20210710185950 2021-07-10 18:59:51 100MVA Transformer No. 2 Incomer tripped. Fire in Local Station Transformer Load shifted by discom 20210709225905 2021-07-09 22:59:06 At 22:06 HRS ICT-I,22:30 HRS ICT-IV and 22:32 HRS ICT-III charged. All system system has been normalised and no load is affected. 20210709221920 2021-07-09 22:19:21 All the three ICTs at 400kV Mundka tripped on Overloading at 22:00 Hrs. System is being normalized. 20210709145314 2021-07-09 14:53:15 Update: In continuation of earlier message, approx. 700 MW load of 220kV Papankalan-1, 2, 3, Naraina and Najafgarh sub-stn. was affected w.e.f. 10:24 hrs. due to reporting of fire at 400kV Bamnauli S/Stn. Partial load was restored by 10:38 hrs. Whereas, complete load was restored by 11:26 hrs. Regards, Delhi SLDC 20210709145234 2021-07-09 14:52:34 Update: In continuation of earlier message, approx. 700 MW load of 220kV Papankalan-1, 2, 3, Naraina and Najafgarh sub-stn. was affected w.e.f. 10:24 hrs. due to reporting of fire at 400kV Bamnauli S/Stn. Partial load was restored by 10:38 hrs. Whereas, complete load was restored by 11:26 hrs. Regards, Delhi SLDC 20210709103618 2021-07-09 10:36:19 After observing fire in yard, all 04 nos. ICTs made off by grid staff. System is being normalized. Regards, Delhi SLDC 20210709103253 2021-07-09 10:32:54 After observing fire in yard, all 04 nos. ICTs made off by grid staff. System is being normalized. Regards, Delhi SLDC 20210708180829 2021-07-08 18:08:30 At 15:24 hrs at 220kV Naraina, 33kV Incomer-2 tripped affecting about 74 MW load. R phase pole of CB was reported damaged by station staff. Load transferred by discoms and presently no load is affected. DTL maintence team at Naraina has taken PTW. 20210707165001 2021-07-07 16:50:02 220 KV Kashmiri gate- SOW ckt-I tripped on distance prot. Y phase from SOW at 16:21 hrs.48 MW load affected,load normalized through B/C at 16:25 hrs. 20210707150546 2021-07-07 15:05:46 220KV Mandaula ckt-II charged at 15:00Hrs. Regards, Delhi SLDC 20210707142513 2021-07-07 14:25:14 220KV SOW-I tripped without indication at 14:09Hrs. Load affected was 148MW. Load normalised through 220KV B/C at 14:12Hrs. Regards, Delhi SLDC 20210707140550 2021-07-07 14:05:51 220KV Gopalpur-Wazirabad ckt-I charged at 13:53Hrs. Regards, Delhi SLDC 20210707140332 2021-07-07 14:03:33 100MVA T/F-3 charged at 13:58Hrs. Regards, Delhi SLDC 20210707134804 2021-07-07 13:48:05 220 KV Goplapur-SOW ckt-I tripped on distance prot.5.00 km from Goplapur at 13:18 hrs.Load of Gopalpur and Sabji Mandi normalized through 220 KV Bus Coupler at 13:19 hrs. 20210707131626 2021-07-07 13:16:27 220 Kv Gopalpur-Mandola ckt-II tripped at 13:05 hrs from Mandola End.No tripping at Goplapur end.Load normalized through 220 KV Wazirabad ckt-I at 13:07 hrs.168 MW load affected for 2 minutes. 20210707120724 2021-07-07 12:07:26 At 220 KV Narela:100 MVA tr-I tripped on earth Fault at 11:59 hrs.No load affected. 20210706220708 2021-07-06 22:07:09 Update:-100 MVA-Tx-3 charged at 16:16 HRS and 220kV Mandaula-Narela Ckt-1 and 2 charged at 21:50 hrs and 21:51 HRS respectively.Also Load taken. Regards, Delhi SLDC 20210706150926 2021-07-06 15:09:27 220kV Mandaula-Narela Ckt-1 and 2 tripped at 14:22 hrs. alongwith Tx-3 on LV REF. Approx. 350MW load of Narela and Rohtak Road was affected. Load normalized on 220kV Panipat Ckt-1, 2 and 3 at 14:43 hrs. Regards, Delhi SLDC 20210705222520 2021-07-05 22:25:22 220 KV Goplapur-sabji mandi ckt-I charged at 19:55 hrs . 20210705174438 2021-07-05 17:44:40 220kV Gopalpur-sabzimandi ckt 1 tripped at 17.40Hrs on Distance Protection, Z-1 20210701200712 2021-07-01 20:07:13 Update: 100 MVA 220/66kV Tx-2 energized on no-load at 19:57 hrs. The same was under shutdown since 26.06.2021 due to high acetylene gas. Regards, Delhi SLDC 20210701194701 2021-07-01 19:47:02 Update: 100 MVA 220/33kV Tx-1 energized on no-load at 19:43 hrs. The same was under shutdown since 14.06.2021 due to high acetylene gas. Regards, Delhi SLDC 20210701154951 2021-07-01 15:49:52 220kV Bamnauli-Papankalan-2 Ckt-1 tripped on distance protn at 14:49 hrs. Approx. 100MW load affected. Partial load shifted by BRPL. Ckt energized at 15:19 hrs. Regards, Delhi SLDC 20210701141133 2021-07-01 14:11:34 Update: 220 kV PPG-Geeta Colony Ckt-2 energized at 08:56 hrs. And 220kV SOW-Geeta Colony Ckt-1 and 2 energized at 14:00 hrs. OPGW was reported broken on these ckts, which has been removed. Presently, 220 kV PPG-Geeta Colony Ckt-1 is under B/D due to its CB problem at Geeta Colony. However, ckt is energized from PPG end. Regards, Delhi SLDC 20210701082956 2021-07-01 08:29:57 At 07:18 hrs, 220 kV SoW-GC-Ckt 1 and 2 tripped on distance protection affecting about 240 MW load from 220 kV Geeta Colony (90 MW) and 220 kV PPG S/stn.(150 MW) At 07:30 hrs, affected load of PPG was restored on 220KV Gazipur- PPG Ckt.. At 07:47 hrs, 220 kV PPG-Ckt 1 and 2 tried, but did not hold at Geeta Colony end. At present 7 MW of BYPL load remains affected. 20210701082947 2021-07-01 08:29:48 At 07:18 hrs, 220 kV SoW-GC-Ckt 1 and 2 tripped on distance protection affecting about 240 MW load from 220 kV Geeta Colony (90 MW) and 220 kV PPG S/stn.(150 MW) At 07:30 hrs, affected load of PPG was restored on 220KV Gazipur- PPG Ckt.. At 07:47 hrs, 220 kV PPG-Ckt 1 and 2 tried, but did not hold at Geeta Colony end. At present 7 MW of BYPL load remains affected. 20210628213540 2021-06-28 21:35:41 220kV Pragati-Sarita Vihar charge at 21:30 HRS and 220kV Maharani Bagh-Sarita Vihar Ckt charge at 21:27 HRS. . Regards, Delhi SLDCDelhi 20210628184950 2021-06-28 18:49:51 220kV Pragati-Sarita Vihar and 220kV Maharani Bagh-Sarita Vihar Ckts. tripped on distance protn at 18:11 hrs. No load affected. Being patrolled by mtc. staff. Regards, Delhi SLDCDelhi 20210628174848 2021-06-28 17:48:49 Update: 220kV Pragati-Park Street Ckt-2 has been energized yesterday i.e. 27.06.2021 at 13:17 hrs. on no-load for 24 hrs. Today, load on this circuit taken at 09:11 hrs. The circuit was under breakdown since 16.04.2021. Regards, Delhi SLDC 20210626093832 2021-06-26 09:38:33 (07:41hrs) 33KV I/C-II tripped on E/F . While I/C-I was put off manually for safety purpose due to monkey electrocution in 33KV yard. 20210624220439 2021-06-24 22:04:40 220 KV Sarita vihar-Pragati ckt charged at 21:57 hrs.Sarita Vihar-Maharani Bagh ckt charged at 21:59 hrs. 20210620182903 2021-06-20 18:29:05 After patrolling and clearance of 220KV MBG-SVR ckt restored at 12:00 HRS 20210620093754 2021-06-20 09:37:55 220kV -Sarita Vihar-Maharanibagh ckt tripped on distance protection, RYB phase at 08:55 hrs. No load is effected and line is being patrolled. Regards, SLDC Delhi. 20210618215420 2021-06-18 21:54:21 100MVA T/F-3 made off by grid staff due to high acetylene at 21:50Hrs. No load was affected. Regards, Delhi SLDC 20210617180140 2021-06-17 18:01:40 220KV I/C III normalized at 12:34hrs, 220KV I/C V and VI normalized at 13:15hrs. 220KV Bus-I was normalized at 13:10hrs. And all load normalized at 13:12hrs. 20210617180046 2021-06-17 18:00:47 At Bawana:: (12:05hrs) 220KV Bus bar protection operated on 220KV bus-I, which resulted in tripping of 220KV I/C III, V and VI. Kanjhawla ckt-I , 100MVA (220/66KV)transformer, 220Kv B/C, Rohini II ckt-II and DSIIDC ckt-I. Load approx 174MW was affected for 2 mins . 20210617063313 2021-06-17 06:33:41 At 220 Kv Narela:100 MVA tr-II tripped on differential at 04:08 hrs. No Load affected. 20210614100443 2021-06-14 10:04:44 At 9:43 hrs. 100 MVA Tr.#1 made off due to formation of acetylene. 20210611061514 2021-06-11 06:15:15 315MVA ICT-3 tripped on Buccholz relay at 05:19Hrs. No load was affected. Regards, Delhi SLDC 20210611000030 2021-06-11 00:00:33 220KV Bamnauli ckt-II tripped on B-phase 86 at 22:57Hrs. No load was affected. Above ckt was charged at 23:51Hrs. Regards, Delhi SLDC 20210610234537 2021-06-10 23:45:37 400KV Abdullapur ckt charged at 23:40Hrs. Regards, Delhi SLDC 20210610234346 2021-06-10 23:43:46 220KV Dwarka ckt-II tripped on differential at 22:56Hrs. Load affected was 133MW. Load normalised at 23:17Hrs. Regards, Delhi SLDC 20210610233815 2021-06-10 23:38:16 220KV Panipat ckt-III tripped on RYB phase z-1 2.6km at 22:35Hrs. No load was affected. Regards, Delhi SLDC 20210610233705 2021-06-10 23:37:06 400KV Abdullapur ckt tripped on Z-1 RYB phase at 22:40Hrs. No load was affected. Regards, Delhi SLDC 20210610233622 2021-06-10 23:36:23 400KV Abdullapur ckt tripped on Z-1 RYB phase at 22:40Hrs. No load was affected. Regards, Delhi SLDC 20210609061340 2021-06-09 06:14:08 At 220 KV sarita Vihar:100 MVA tr-II tripped on diffrential alongwith 66 Kv Incomer-I,II and III tripped on Earth fault at 05:27 hrs.Incomer-I charged at 05:45 hrs. 34 MW load affected till 05:55 hrs. 20210608170558 2021-06-08 17:05:59 220kV Mundka - Kanjhawala ckt charged 16:45Hrs 20210608155646 2021-06-08 15:56:47 220kV Okhla TKD ckt 2 charged at 15.20 HRS and Ckt 1 charged at 15.28HRs 20210608142428 2021-06-08 14:24:30 220kV Tuglakabad -Okhla Ckt 1 tripped at 14.06HRs and Ckt Tripped at 1.31HRs, Load diverted by BRPL, Load Normalize through 220kV BTPS. 20210608131241 2021-06-08 13:12:42 220kV Tuglakabad -Okhla Ckt2 tripped at 13.02 HRs, Relay 86T, 86X, Z-1, YB-PH Differential Trip 20210608112729 2021-06-08 11:27:31 100MVA TR-1 charged at 11.05HRs 20210608105546 2021-06-08 10:55:48 10:45Hs 160MVA TR No1 tripped on WTI and Master trip, during this period Maintenance team was doing maintenance work at Cooling system of Transformer No.1. 20210607184312 2021-06-07 18:43:14 220kV Mandaula-Narela Ckt-2 energized at 16:24 hrs. and load taken. Regards, Delhi SLDC 20210607135105 2021-06-07 13:51:08 220kV Mandaula-Narela Ckt-2 tripped on B-phase differential/inter trip at 13:29 hrs. No load affected. Regards, Delhi SLDC 20210604200127 2021-06-04 20:01:27 400KV Bamnauli-Jhatikara ckt-1 tripped on distance protection at 17:13 hrs. Jumper is reported snapped at Tower no. 168. No load affected. Maintenance staff is working. Regards, Delhi SLDC 20210604153035 2021-06-04 15:30:37 220 KV Shalimarbag ckt-2 tripped on dist. prot. R-Y-B Phase Dist. 11.4 KM at 13:52 hrs.and restore at 14:36 hrs. No load affected. 20210603234734 2021-06-03 23:47:35 220 KV Munadka ckt tripped on Distance prot.R and B phase at 23:12 hrs.120 Mw load affected.at 23:15 hrs load normalized through 220 KV Bawana ckt-I and II. 20210530190431 2021-05-30 19:04:33 220 KV Rohini-Bawana Ckt-I charged at 19:01 hrs. 20210530173424 2021-05-30 17:34:27 At 400 KV Mundaka-Jhajjar ckt-I tripped on Distane prot.Zone-I Y phase 31.26 km at 16:48 hrs.No load affected. 20210530165012 2021-05-30 16:50:13 At 16:28 hrs, 100 MVA-3 and 100 MVA-4 energized after inspection by maintenance team. 20210530164914 2021-05-30 16:49:16 At 14:31 hrs, 220kV Bawana ckt-2 tripped without indication at rohini-1 end, along with 100 MVA-3 and 100MVA-4, which tripped on OC, EF. 20210528090223 2021-05-28 09:02:25 33kV I/C-5 tripped with the tripping of 33kV Okhla Ph-2 Ckt-1 and 2 on E/F at 06:44 hrs. Approx. 20 MW affected load normalized after energizing I/C-5 at 07:40 hrs. Regards, Delhi SLDC 20210526082206 2021-05-26 08:22:07 100 MVA Tx-1 restored on single R-ph cable at 04:40 hrs. Regards, Delhi SLDC. Regretful to acknowledge that in the previous message, Tx-2 was mistakenly mentioned instead of Tx-1. 20210525235115 2021-05-25 23:51:17 220/33kV 100 MVA Tx-2 tripped at 22:44 hrs on differential RYB ph. and overflux. Rph cable of LV side burnt with heavy flames. 65MW load effected which was partially shifted by Discoms. 33kV Tibia college ckts normalized on 66/33kV 30MVA Tx 1 and 2 at 23:24 hrs. Regards, SLDC Delhi. 20210524075350 2021-05-24 07:53:51 At 220 Kv Gazipur-: MBAGH ckt-II tripped on distance prot. R and Y Phase 6.2 km at 07:27 hrs.No Load affected. 20210519173821 2021-05-19 17:38:22 220 KV Okhla-BTPS ckt-I charged at 17:36 hrs. 20210519171059 2021-05-19 17:11:02 20 MVA tr-II tripped on over current earth fault at 16:57 hrs.massage conveyed to BRPL C/R for load backfeed. 20210519154457 2021-05-19 15:44:59 220 KV Okhla-BTPS ckt-I tripped on distnace prot.B phase 1.8 km at 15:20 hrs.No load affected. 20210519145415 2021-05-19 14:54:16 20 MVA tr-I tripped on diffrential at 14:09 hrs.3 MW Load affected.massage conveyed to BRPL C/R for load backfeed. 20210519142604 2021-05-19 14:26:05 220 KV Okhla-BTPS ckt-I charged at 14:17 hrs. 20210519140718 2021-05-19 14:07:19 220 KV Okhla-BTPS ckt-I tripped on distnace prot.B phase 1.8 km at 13:03 hrs.No load affected. 20210519110759 2021-05-19 11:08:04 At 400 Kv Bamnauli:220 KV NZF ckt-II tripped on Distance prot. Y and B Phase,334.5 meter at 10:49 hrs.Load of NZF normalized through B/C at 10:52 hrs. 20210519083557 2021-05-19 08:35:59 20MVA T/F-2 charged at 08:25Hrs. Regards, Delhi SLDC 20210519075417 2021-05-19 07:54:18 20MVA T/F tripped on Differential R-phase at 06:50Hrs. Load affected was 4MW. Load normalised through 11KV Bus Section at 06:58Hrs. Regards, Delhi SLDC 20210519075158 2021-05-19 07:52:01 20MVA T/F-2 tripped on 30TEF at 02:10Hrs. Load affected was 1.5MW. Load normalised through 11KV Bus Section at 02:11Hrs. Regards, Delhi SLDC 20210518211055 2021-05-18 21:11:00 400KV Mandaula ckt-I charged at 21:03Hrs. Regards, Delhi SLDC 20210518194320 2021-05-18 19:43:22 220KV Tuglakabad ckt-II charged at 19:39Hrs. Regards, Delhi SLDC 20210518191147 2021-05-18 19:11:52 400KV Mandaula ckt-I tripped on Z-1 B-phase at 19:01Hrs. No load was affected. Regards, Delhi SLDC 20210518171243 2021-05-18 17:12:44 220KV Tuglakabad ckt-II tripped on line differential at 16:59Hrs. No load was affected. Regards, Delhi SLDC 20210518163055 2021-05-18 16:30:57 100MVA T/F-1 charged at 16:26Hrs. Regards, Delhi SLDC 20210517203019 2021-05-17 20:30:22 100MVA-I tripped at 19:25hrs on 186ABC ,186 AandB. 33KV I/C-I tripped on 64R 19:40:: 33KV B/C put ON. 20210516153738 2021-05-16 15:37:39 At 15:34 hrs, 22okV M. Bagh - Lodhi ROd CKt-1 energized after patrolling. 20210516145539 2021-05-16 14:55:42 At 12:44 hrs, 220kV Lodhi Road Ckt-1 tripped at distance protection affecting about 30 MW load. Load normalized by switching on bus coupler at Lodhi road at 12:46 hrs. Ckt is being patrolled by O and M. 20210515204714 2021-05-15 20:47:14 At 20:41 HRS ,220KV Geeta Colony CKT-I normalised. 20210515194653 2021-05-15 19:47:06 At 19:43 HRS, 220KV Kashmiri gate ckt-I normalised. 20210515185613 2021-05-15 18:56:15 At 18:29 HRS,tripping of 220KV geeta colony ckt-I no Load affected at Geeta colony end. At 18:30 HRS,tripping of 220KV Kashmiri gate ckt-I Load affected 20MW, normalised by closing 220KV Bus coupler at 18:32 HRS 20210515160720 2021-05-15 16:07:22 At 16:02 HRS,220KV SGTN-SMB CKT-I normalised. 20210515154014 2021-05-15 15:40:15 At 15:25 HRS,16 MVA tx-I normalised. Load taken on 11KV I/C-I separately. 20210515144212 2021-05-15 14:42:14 At 14:19,tripping of 220KV SMB-I, i-differential,fault location 2.75KM from SMB end. Load affected 15MW Normalised by closing 220KV bus coupler at 14:24 HRS 20210514211158 2021-05-14 21:11:59 16 MVA-I tripped at 18:06hrs on differential protection A and B phase. Maintenance staff is working . 20210514210659 2021-05-14 21:07:02 100MVA-I energized at 18:25hrs. 20210513200548 2021-05-13 20:05:50 100MVA T/F-1 tripped on REF at 19:52Hrs. No load was affected. Regards, Delhi SLDC 20210513071722 2021-05-13 07:17:24 At 3:44 hrs 400 kV Bawana substation 400 kV Bus I tripped on bus bar protection and 400 kV bus II of CCGT Bawana was also tripped on bus bar protection during thunderstorm. No load affected. 20210511181626 2021-05-11 18:16:27 At 18:13 hrs, 220kV NJF-Bamnoli ckt 1 normalized after patrolling clearance. Regards, Delhi SLDC. 20210511145852 2021-05-11 14:58:54 At 14:30 hrs, 220kV Bamnauli-Najafgarh ckt 1 tripped on R-B ph. fault loction 7km From Bamnauli. 106 MW load effected which was normalized through B/C at 14:35 hrs. Regards, Delhi SLDC. 20210510112455 2021-05-10 11:24:58 At 220KV PPG 100MVA 220/66KV T/F-1 tripped without indication at 10:56AM. Load affected:44MW, after mtc clearance T/F-1 charged at 11:05. 20210510075027 2021-05-10 07:50:30 At 220 Kv Parkstreet 33 Kv incomer-II tripped on O/C,E/F alongwith 33 kv Baird lane ckt-II at 07:06 hrs.Grid staff informed Monkey electrocuted on 33 KV Bus-II.Load shifted by Discoms. 20210509220548 2021-05-09 22:05:49 At 220 KV sarita Vihar-maharani Bagh ckt tripped on distance prot.R phase,9.38 KM at 21:45 hrs. No load affected. 20210509202053 2021-05-09 20:20:55 220 Kv Sarita Vihar-Maharani Bagh ckt charged at 20:17 hrs. 20210509183306 2021-05-09 18:33:09 220 Kv Okhla -BTPS ckt-I charged at 18:16 hrs. 20210509173811 2021-05-09 17:38:13 At 220 KV sarita Vihar-maharani Bagh ckt tripped on distance prot.R phase,6.7 KM at 16:53 hrs. At 220 Kv Okhla-BTPS ckt-I tripped on Distance prot.,B phase,3.95 KM at 17:02 hrs. No load affected. 20210508214046 2021-05-08 21:40:49 220KV Mandola ckt-I put off manually in emergency due to visible hot point on top phase at T. No. 25. 20210508192219 2021-05-08 19:22:19 220KV B/C energized at 18:49hrs. 20210508192144 2021-05-08 19:21:44 220KV B/C tripped on 86, 195R, E/F at 18:33hrs. No load was affecetd at Geeta Colony. 20210508192010 2021-05-08 19:20:11 220KV Geeta colony-I energized at 19:10hrs. 100MVA-II energized at 19:18hrs. 20210508191746 2021-05-08 19:17:51 220KV IP-II tripped from both ends on D/P ,3.6KM from Patparganj end. 220KV Geeta Colony-I tripped from both ends on E/F and O/C 100MVA-II(220/66KV) transformer tripped on 86. However no load was affected. 20210507185708 2021-05-07 18:57:10 20MVA T/F-2 tripped on O/C 86 at 18:40Hrs. Load affected was 4.7MW. Regards, Delhi SLDC 20210506172746 2021-05-06 17:27:48 At 220KV M.Moth : 100MVA,220/33KV Tx-2 tripped due to Y- phase 220KV jumper damaged at v16:25 HRS. Approx 35 MW Load affected.Load normalised by through 33KV Bus coupler at 16:30 HRS. Regard Delhi SLDC 20210502175925 2021-05-02 17:59:29 220kV IP-Pragati ckt 1 normaized at 17:56 hrs. Regards, Delhi SLDC. 20210502160319 2021-05-02 16:03:22 220kV IP-Pragati ckt-1 tripped at 15:12 hrs. on dist protection, fault location 1 km from pragati end. No load is effected and line is being patrolled. Regards, Delhi SLDC. 20210429211300 2021-04-29 21:13:03 At 220 KV Vasant Kunj:20 MVA-I Charged at 21:10 hrs. 20210429185258 2021-04-29 18:52:59 At 220 KV Vasant Kunj:20 MVA Tr-I tripped on LV REF,B phase LT Bushing blast at 18:15 hrs.4 MW Load affected. 20 MVA Tr-II under shutdown for Overhauling. massage conveyed to BRPL for back feed the load. 20210429154918 2021-04-29 15:49:20 220KV Gopalpur-Sabzimandi ckt-1 tripped only at Gopalpur end at 15:27 without any indication, Load affected:~30MW Ckt charged at 15:35. 20210427233608 2021-04-27 23:36:10 At 21:40 hrs, 220kV Mundka Ckt tripped on EF, distance protection from KNJ end, affecting about 140 MW load. Load normalized on 220kV Bawana Ckt 1 and 2 at 21:44 hrs. 20210427162028 2021-04-27 16:20:53 220 Kv Mahrauli-Dial ckt-II charged at 16:05 hrs 20210427131227 2021-04-27 13:12:28 At 220 KV Mahrauli:220 KV Dial ckt-II and 160 MVA tr tripped on 86.ckt also tripped from Dial end on Distance prot. Y and B phase 5.4 KM at 12:25 hrs.160 MVA tr charged at 12:58 hrs.16 MW Load affected at Mahrauli for 09 Minute.(220 KV Dial -Bamnauli ckt -I and II under shutdown). 20210427131145 2021-04-27 13:12:09 At 220 KV Mahrauli:220 KV Dial ckt-II and 160 MVA tr tripped on 86.ckt also tripped from Dial end on Distance prot. Y and B phase 5.4 KM.160 MVA tr charged at 12:58 hrs.16 MW Load affected at Mahrauli for 09 Minute.(220 KV Dial -Bamnauli ckt -I and II under shutdown). 20210423084202 2021-04-23 08:42:14 At 08:26 hrs, 33kV Incomer-2 and 33kV Bus-2 at Parkstreet energized after resetting relay. 20210423083555 2021-04-23 08:36:19 At 07:48 hrs, due to electrocution of a monkey at Parkstreet yard, 33kV Incomer-2 tripped on EF, 33kV Baird Road-2 tripped on EF and 33kV Bus -2 tripped without indication affecting about 12 MW load. 20210421185331 2021-04-21 18:53:34 220 sarita vihar-BTPS circuit no.1 charged at 18:50hrs. 20210421164530 2021-04-21 16:45:33 At 16:35HRs 220kV Sarita Vihar-Badarpur ckt 1 tripped on Distance protection Zone 1, B-Ph,distance 1.78 Kms A/R Lockout 186A and B Fault current at BTPS end is 28KA 20210419204013 2021-04-19 20:40:16 At 17:55 hrs, 160 MVA-1 tripped on differential protection. No load affected. Breakdown is being attended by te maintenance team present on the substation. 20210417193744 2021-04-17 19:37:47 update: 220kV Kanjhawala-Bawana ckt 2 energized at 19:18Hrs. Regards, SLDC Delhi. 20210417170111 2021-04-17 17:01:13 220kv MAHARANIBAGH ENERGIZED AT 11:40HRS AND 220KV PRAGATI ENERGIZED AT 13:20HRS. 20210416203400 2021-04-16 20:34:01 20:32HRs 220kV Najafgarh ckt charged 20210416202049 2021-04-16 20:20:50 17:40 Hrs 220kV Pragati Tripped on Distance Prot, B-Ph Distane 2.525KM and 220kV Maharanibhagh Tripped on Distance Prot, Z-2, R-Ph Distane 9.65KM Ckts pending for clearance from O and M division 20210416201222 2021-04-16 20:12:23 At 19:49Hrs 220kV Bawana ckt -2 charged 20210416201040 2021-04-16 20:10:41 At 20:06 400kV Tughlkabad Ckt-2 charged 20210416192842 2021-04-16 19:28:43 At 18:30HRs 220kV Rohtak Rroad ckt ckt 1 charged 20210416192451 2021-04-16 19:24:51 220kV Gopalpur Ckt-2 charged at 18:43Hrs 20210416192402 2021-04-16 19:24:03 18:42 Hrs 220kV Patparganj Ckt-2 charged 20210416191755 2021-04-16 19:17:56 100MVA Tr- No.3 Tripped at 17:33HRs at 86 relay, Charged at 19:00HRs. No Load Affected. 20210416191349 2021-04-16 19:13:50 17:45HRs 400kV Bawana S/stn to 220kV Rohini -1 S/stn ckt2 tripped at 186 A and B 295BC, B-Ph trip Differential distance 2.64KM, Ic =19.74KA, ckt still out. No Load Affected 20210416190816 2021-04-16 19:08:16 17:11Hrs, 400kV Tugalkabad ckt-II, Tripped on Distance prot, Z-1, Fault Location 27KM, Fault current 9.16KA 20210416190709 2021-04-16 19:07:10 17:25 HRs, 220kV PPK-2 ckt-1 and 2 tripped showing relays Distance Protection, R-PH At 18:26 PPK-2 ckt-2 and at 18:33 PPK-2 ckt1 charged No load affected, Load diverted by Discom. 20210416185742 2021-04-16 18:57:45 17:25 HRs, 220kV PPK-2 ckt-1 and 2 tripped showing relays Distance Protection, R-PH At 18:26 PPK-2 ckt-2 and at 18:33 PPK-2 ckt1 charged No load affected, Load diverted by Discom. 20210416162715 2021-04-16 16:27:15 In earlier message, please read 220kV Mandaula-Gopalpur Ckt-1 instead of Ckt-2. Regards, Delhi SLDC 20210416162356 2021-04-16 16:23:58 220kV Mandaula-Gopalpur Ckt-2 tripped on distance protection. Approx. 97MW load of Gopalpur and Subzi Mandi was affected. Load normalized on 220kV SoW Ckt-2. Regards, Delhi SLDC 20210416093159 2021-04-16 09:32:01 At 220KV patparganj: 220KV IP ckt-1 and 2 tripped at 08:40 on relay:distance protection trip B and C, 86. consequently 220KV IP-pragati-1 and 2 tripped lead to tripping of GT and pragati, supply fail at 220KV parkstreet-2, 220KV Rajghat , 220KV IP power. 220KV parkstreet made B/C on at 08:43Hrs, 220KV paragti made B/c on at 08:51, 220KV pataprganj-IP ckt-1 and 2 charged at 08:58Hrs supply restored at all stns. 20210415141348 2021-04-15 14:13:49 At 220kV PPk-2, 100MVA Tx-2 tripped on R-N Ph. fault at 13:56 Hrs. R Ph. LA damaged. Load not effected. Regards, SLDC Delhi. 20210415141137 2021-04-15 14:11:38 At 220kV SoW, 220kV Mandola ckt 1 charged at 14:04. Regards, Delhi SLDC. 20210415121026 2021-04-15 12:10:29 At 220kV SoW, 220 kV Mandola ckt 2 tripped at 11:32hrs on Y-B ph. fault, distance 1.6km and and 220 kV Mandola ckt 1 tripped at 11:34 hrs on R-Y ph. fault, distance 1.5 km. no load is effected and line is being patrolled. Regards, Delhi SLDC. 20210409190049 2021-04-09 19:00:52 At 220kV Ridge Valley, 220kV Naraina ckt energized at 18:30 on no load for 24 hrs. It was under outage due to cable theft since 01.03.2021. Regards, Delhi SLDC. 20210408165459 2021-04-08 16:55:01 At 220 kV R K Puram: 220kV Trauma Centre Ckt-1 and Ridge Valley Ckt-1 have been charged on no load for 24 hrs. at 13:10 and 14:05 hrs. respectively. 20210407173519 2021-04-07 17:35:22 Update:- 100MVA T/F-2 charged at 17:26Hrs. Regards, Delhi SLDC 20210407163013 2021-04-07 16:30:16 At 220kV Wazirabad: 100MVA Tx-2 tripped on Buchholz and SPR at 16:01 hrs. No load was affected. Regards, Delhi SLDC 20210405151605 2021-04-05 15:16:30 At 220KV Okhla:- 20MVA T/F-1 tripped without indication at 14:41Hrs. Load affected was 8MW. Load normalised after charging 20MVA T/F-1 at 15:08Hrs. Regards, Delhi SLDC 20210405084455 2021-04-05 08:44:57 220kV Bus coupler tripped on master trip and PT supply fail indication at 05:10 hrs, effecting 30 MW all load of 66kV which was shifted by BYPL. At 05:34 hrs, 66kV load normalized on 220kV Preet vihar ckt 1. 20210403174028 2021-04-03 17:40:30 At 400 KV M.bagh:220 Kv Gazipur ckt-II tripped on distance prot. zone-I 6.3 km.ckt also tripped from Gzp end. No load affected. 20210403112109 2021-04-03 11:21:11 At 220 KV Kanjhwala:220 Kv Najafgargh ckt tripped on distance prot.,E/F at 10:31 hrs.No load affected. 20210401152122 2021-04-01 15:21:48 At 12:21 hrs, at 400kV Bamnauli, 400kV Tughlakabad ckt 1 and 2 tripped on distance protection. Maintenance team is patrolling the ckts. 20210401074640 2021-04-01 07:46:41 New cable interconnecting 66kV cable with 220kV Cable is charged on 31.03.2021 at 21.30 Hrs the cable is back charged as one circuit from 66kV Paschim vihar BSES 20210401074329 2021-04-01 07:43:30 New cable interconnecting 66kV cable with 220kV Cable is charged on 31.03.2021 at 21.30 Hrs the cable is back charged as one circuit from 66kV Paschim vihar BSES 20210401074304 2021-04-01 07:43:05 New cable interconnecting 66kV cable with 220kV Cable is charged on 31.03.2021 at 21.30 Hrs the cable is back charged as one circuit from 66kV Paschim vihar BSES 20210401073246 2021-04-01 07:32:47 20MVA Transformer No.1 Tripped on Differential Relay operated for R-Y-B Phase on 01.04.21 at 1.30 Hrs 20210401072619 2021-04-01 07:26:20 New cable interconnecting 66kV cable with 220kV Cable is charged on 31.03.2021 at 21.30 Hrs following arrangement is back charged as one circuit from 66kV Paschim vihar BSES 20210401072425 2021-04-01 07:24:25 20MVA Transformer No.1 Tripped on Differential Relay operated for R-Y-B Phase on 04.01.21 at 1.30 Hrs 20210401064517 2021-04-01 06:45:18 Corrigendum Date may please be read as 31.03.2021 instead of 31.04.2021 for charging of New 220kV Bay No. 220 and New 160 MVA Transformer NO.4 charging at 20.58 Hrs on No Load 20210401005120 2021-04-01 00:51:23 220kV ckt Trauma center to ridge valley ckt 1 LILO at 220kV R K Puram is charged at 11.59Hrs on 31.03.2021 20210331211051 2021-03-31 21:10:54 On 31.04.2021 New 220kV Bay No. 220 charged at 20.58HRs New 160MVA Transformer charged at 20.58Hrs on No Load. 20210331045222 2021-03-31 04:52:24 Update:- 100MVA T/F-2 charged at 20:06Hrs. Regards, Delhi SLDC 20210330183416 2021-03-30 18:34:16 Corrigendum:- 400KV B-phase bushing has been blasted in place R-phase. Regards, Delhi SLDC 20210330183044 2021-03-30 18:30:45 At 400KV Bawana:- 315MVA ICT-2 tripped on differential and 64R. Grid staff has reported blast in 400 KV R-phase bushing with fire. Presently fire is under control. No load was affected. Regards, Delhi SLDC 20210330175738 2021-03-30 17:57:41 At 220KV Kashmiri Gate:- 100MVA T/F-2 tripped on Differential HV REF at 17:37Hrs. Load affected was 23MW. Load was normalised through 33KV B/C at 17:39Hrs. Regards, Delhi SLDC 20210329214330 2021-03-29 21:43:30 At 21:27 Hrs ¿STG #2 of CCGT BAWANA tripped on internal fault 20210329213844 2021-03-29 21:38:47 At 21:17 Hrs. 160 MVA Xr#2 tripped on SPR 20210329153420 2021-03-29 15:34:21 At 220KV Geeta Colony:- Bus Bar Protection-I operated due to which 220KV Patparganj-I, 220KV SOW-I and 100MVA T/F-I tripped at 14:29Hrs. Load affected was 18MW. Load normalised through 33KV B/C at 14:30Hrs. CVT of Patparganj-I and SOW-I coming at Geeta colony. 220KV Patparganj-I, 220KV SOW-I and 100MVA T/F-I charged at 15:10Hrs. Regards, Delhi SLDC 20210329152633 2021-03-29 15:26:35 At 220KV Kanjhawala:- Supply fail of 220KV Bawana ckt I and II at 13:53Hrs. At 400KV Bawana:- 220KV Kanjhawala ckt-I tripped on RYB phase differential Z-2 37.7Km, 220KV Kanjhawala ckt-II trippeed on B phase differential 21.7Km at 13:53Hrs. Load affected was 88MW at Kanjhawala. Load normalised through 220KV Mundka-Kanjhawala ckt at 14:09Hrs. 220KV Mundka-Kanjhawala ckt tripped on Z-1 17.5Km R phase at 14:33Hrs.Load affected was 55MW. Load normalised through through 220KV Najafgarh-Kanjhawala ckt at 14:48Hrs. Regards, Delhi SLDC 20210329151340 2021-03-29 15:14:05 At 220KV Kanjhawala:- Supply fail of 220KV Bawana ckt I and II at 13:53Hrs. At 400KV Bawana:- 220KV Kanjhawala ckt-I tripped on RYB phase differential Z-2 37.7Km, 220KV Kanjhawala ckt-II trippeed on B phase differential 21.7Km at 13:53Hrs. Load affected was 88MW at Kanjhawala. Load normalised through 220KV Mundka-Kanjhawala ckt at 14:09Hrs. 220KV Mundka-Kanjhawala ckt tripped on Z-1 17.5Km R phase at 14:33Hrs.Load affected was 55MW. Load normalised through through 220KV Najafgarh-Kanjhawala ckt at 14:48Hrs. Regards, Delhi SLDC 20210328221531 2021-03-28 22:15:33 Update: 220 Kv PPG-IP ckt- I and II charged at 21:20 hrs. 20210328210803 2021-03-28 21:08:03 Update: 220 KV PPG substation normalized at 19:50 hrs.220 PPG-IP ckt-I and II still out. 20210328194140 2021-03-28 19:42:10 At 220 Kv PPG: 220 Kv IP ckt-I and II and 220 KV PVR ckt-I and II tripped (indiacation not to be confirmed by staff) due to this supply failed at 220 Kv IP,220 KV RPH,220 KV Parkstreet ckt-II (66 KV load) at 18:44 hrs.parkstreet load normalised through 220 Kv B/C at 18:47 hrs. and Load of IP and RPH normalised at 18:52 hrs through 220 KV B/C at Pragati.08 MW Load still affected of PPG,remaining load shifted by BYPL.Transformers and 220 KV ckts could not be charged at PPG. 20210328180216 2021-03-28 18:02:17 At 17.26 HRs 100MVA Tr No.1 tripped on Differential and E/f Relay, 33kV Incomer No-1 B-PH LA blasted and 33kV B-Ph CT of Incomer No.1 cought fire. Load shifted by Discom. 20210328175420 2021-03-28 17:54:20 At 17.25 HRs two number Jumpers of Okhla Phase-II Ckt II snapped, due to which 100MVA Incomer NO. 3 and 4 tripped on O/c and E/f relay 100MVA Incomer No.3 and 4 are charged at 17.45HRs, load shifted by discom, 8MW load affected for 10Mins. 20210328175404 2021-03-28 17:54:06 At 17.25 HRs two number Jumpers of Okhla Phase-II Ckt II snapped, due to which 100MVA Incomer NO. 3 and 4 tripped on O/c and E/f relay 100MVA Incomer No.3 and 4 are charged at 17.45HRs, load shifted by discom, 8MW load affected for 10Mins. 20210328095623 2021-03-28 09:56:26 Shutdown on 220kV Trauma Centre-Ridge Valley Ckt-1 is being availed by Project Deptt. w.e.f. 09:00 hrs. for 03 day for LILO at RK Puram. Further, 220kV Trauma Centre-Ridge Valley Ckt-2 is already under shutdown by Project Deptt. since 05.03.2021 for similar work. As such, the 66kV load of Ridge Valley will be fed from 66kV Park Street and 66kV Vasant Kunj Ckts by BRPL. Regards, Delhi SLDC 20210327224201 2021-03-27 22:42:02 Update: 160MVA Tx-2 at SGTN has been charged at 22:20 hrs. Regards, Delhi SLDC 20210327224032 2021-03-27 22:40:32 Update: 100MVA Tx-3 at Shalimar Bagh has been charged at 21:28 hrs. Regards, Delhi SLDC 20210327223743 2021-03-27 22:37:44 Update: 100MVA Tx-3 at SMB and 160MVA Tx-2 at SGTN have been charged at 21:28 and 22:20 hrs. respectively. Regards, Delhi SLDC 20210327222849 2021-03-27 22:28:52 Update: 100MVA Tx-3 at SMB and 160MVA Tx-2 at SGTN have been charged at 21:28 and 22:20 hrs. respectively. Regards, Delhi SLDC 20210327195924 2021-03-27 19:59:26 160MVA Tx-2 tripped on E/F and O/C at 18:32 hrs. Approx. 11MW load affected which normalized through 66kV bus coupler at 18:34 hrs. Regards, Delhi SLDC 20210327170954 2021-03-27 17:09:57 100MVA 220/33kV TR NO.3 trippped at 16.58HRs on O/c and E/f relay. 20210325134950 2021-03-25 13:49:53 At 220KV PRAGATI station(12:21hrs): 160MVA transformer-I tripped on intertripping and load of 160MVA-II disappeared. Further the load on 160MVA-II appeared at 13:00hrs approx. However no details has been provided by GTPS station as yet. Details from GTPS still awaited. 20210323195152 2021-03-23 19:51:54 100MVA Tr-1 220/33kV , Incomer charged at 19:30 HRs 20210323192459 2021-03-23 19:25:02 100MVA Tr-NO1 220/33kV, Incomer tripped on 51CX at 18:55HRs along with 33kV SOW ckt2 which tripped on Z-1, E/F and O/c. Load normalize through bus coupler at 18:58 Hrs 20210323125258 2021-03-23 12:53:00 220kV Bus-Coupler tripped on VT Fuse Failure (97) and 86 at 10:50 hrs. Approx. 50MW load was affected, which Discoms shifted on alternate sources immediately. Bus-Coupler closed at 10:56 hrs. Regards, Delhi SLDC 20210321221920 2021-03-21 22:19:22 At 19:42 hrs, 100MVA-2 tripped on OLTC Buccholz along with 66kV Incomer. 66kV OG Ridge Valley Ckt2 also tripped on OC, EF and damage was noted on its R-Phase CVT. DTL and BRPL staff are both present on the site, examining the breakdown. 20210313113044 2021-03-13 11:30:46 At 11:25 hrs Maharani Bagh to Lodhi Road ckt-I charged. 20210312180213 2021-03-12 18:02:44 220 KV Loadhi road ckt-I tripped on Distance prot zone -I at 17:34 hrs.grid staff reported Y phase LA blast at Maharani Bagh.Load normalized through Bus coupler. 20210311111025 2021-03-11 11:10:27 100MVA Tr No.3 tripped on differential protection on 11.03.2020 at 09.20HRs. Load shifted by Discom Transformer charged at 10.46HRs. 20210309225652 2021-03-09 22:56:54 At 21:50 hrs, at 220kV Gazipur, the following elements tripped: 220kV Maharani Bagh Ckt-2, on Differential protection. Guy wire reported to be broken. 66kV O/G Kondli Ckt-1, on OC, EF, affecting 19 MW load for 5 mins. 20210309224925 2021-03-09 22:49:27 At 21:15 hrs, at 220kV RPH, 33kV Incomer-1 tripped on EF. Fire reported near 33kV Bay-1. No load affected. Incomer tried at 21:43 hrs, hold OK. Bay-1 is being examined by discom staff. 20210309144925 2021-03-09 14:49:27 (AT 11:35HRS) 33KV BUS TIE PUT OFF MANUALLY . (AT 11:40HRS) 33kv I/C-II PUT OFF MANUALLY. DUE TO HEAVY FLASH IN 33KV BUS TIE ISOLATOR(33KV BUS II SIDE). LOAD OF NDMC AND BYPL AFFECTED. (AT 11:47HRS) 33KV I/C-II ENERGIZED ON 33KV BUS-I AND LOAD NORMALISED. PRESENTLY 33KV BUS TIE AND 33KV BUS-II STILL OUT. 20210308225028 2021-03-08 22:50:31 Update: At 220kV Pragati: 220/66kV 160MVA Tx-1 energized at 22:42 hrs. Regards, Delhi SLDC
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