Tel No.:033-24239651, 24239651, FAX No.:033-24239652, 24239653 Web: www.erpc.gov.in

NO. ERPC/PROTECTION/2019/ DATE: 05.04.2019

FAX MESSAGE NO. - 631

To,

As per list enclosed.

Sub: Notice for 78th Protection Coordination sub-Committee (PCC) meeting of ERPC

Notice is hereby given that 78th PCC meeting of ERPC will be held on 22nd April 2019 (Monday) at 11:00 hrs at ERPC Conference Room, Kolkata.

The tentative agenda items for discussion will be as follows:

1) Confirmation of the minutes of 77th Protection sub-Committee Meeting of ERPC 3) Analysis of following grid disturbances of March, 2019:

Load Gen Sl Affected GD/GI Date Time Summary loss loss No System (MW) (MW) At 13:39 hrs 400 kV SEL - Jharsuguda D/C and 400 kV SEL - Lapanga D/C tripped at 13:39 hrs. 14-03- 1 GI-II 13:39 OPTCL In PMU data, fault has been observed in R and 0 0 2019 Y phases. As per DR received DT received at Jharsuguda end. 400 kV bus I at Lapanga was out of service since previous day. At 11:59 hrs, bus II tripped 15-03- 2 GI-II 11:59 OPTCL due to isolator flashover of 400 kV Lapanga - 0 0 2019 Meramundali - II resulting total power failure at 400/220 kV at Lapanga s/s. 400 kV Alipurduar - Binaguri - II tripped at 11:34 hrs on B-N fault. This line was charged at 12:42 hrs from Alipurduar end. While 27-03- 3 GI-II 12:42 ISTS closing breaker at Binaguri end, all main 0 0 2019 breakers connected to bus I tripped. 400 kV Purnea - Binaguri D/C also tripped at this event.

4) Single line tripping incidences of March-2019 is enclosed at Annexure-I. 5) Islanding scheme of Kanti TPS You are requested to kindly furnish the detail report along with all records (SLD, SOE, DR, Relay and schematic diagram of auxiliary supply, wherever applicable) related to above trippings for meaningful analysis during the meeting. You are also requested to upload the details in on-line tripping incident reporting system implemented in Protection Database Management System www.erpc-protectiondb.in.

Your participation in the meeting is highly solicited. Please confirm your participation in the meeting along with name and designation of the participants.

Yours faithfully,

Sd- (J. Ganeswara Rao) Executive Engineer

LIST OF ADDRESSES:

Chief Engineer, Trans (O&M) Electrical Superintending Engineer (CRITL) Bihar State Power Transmission Limited, Vidyut Bihar State Power Transmission Limited, Vidyut Bhawan, Bailey Road, Patna-800021 Bhawan, Bailey Road, Patna-800021 Chief Engineer (SLDC) Chief Engineer (CTC) Damodar Valley Corporation, GOMD-I Premises, Damodar Valley Corporation, P.O. Maithon Dam, P.O.- Danesh Seikh Lane, Howrah- 711109 Dist. Dhanbad, Jharkhand-828207 Chief Engineer, (CRITL) Electrical Superintending Engineer (CLD) Jharkhand Urja Sancharan Nigam Limited Jharkhand Urja Sancharan Nigam Limited, Kusai Colony, Doranda, Ranchi-834002 Kusai Colony, Doranda, Ranchi-834002 Chief General Manager (O&M), Sr. General Manager (PPA), Technical Wing, OPTCL, Janpath, Bhubaneswar, OHPCL, Orissa State Police Housing & Welfare Odisha – 751 022. FAX: 0674-2542932 Corpn. Bldg. Vanivihar Chowk, [email protected] Janpath,Bhubaneswar-752022 Chief Load Dispatcher, SLDC Chief Engineer (Testing), WBSETCL OPTCL, P.O. Mancheswar Rly. Colony Central Testing Laboratory, Abhikshan, Salt Lake, Bhubaneswar-751017 Kolkata-700091 ( Fax no. 2367-3578/1235 ) Chief Engineer (CLD) Addl. Chief Engineer (ALDC) WBSETCL, P.O. Danesh Sheikh Lane, West Bengal Electricity Distribution Company Ltd Andul Road, Howrah-711109 Vidyut Bhavan, 7th Floor, Bidhannagar, Sector-I Salt Lake City, Kolkata-700091(Fax-033-2334-5862) Dy. Chief Engineer (Testing)/ Sr. Manager (Testing) General Manager (O&M) CESC Ltd.,4, Sasi Sekhar Bose Road, KhSTPS, NTPC Ltd., P.O. Deepti Nagar, Kolkata-700025 Dist. Bhagalpur, Bihar-813203 General Manager(O&M) Dy. General Manager ( Engineering), FSTPS, NTPC Ltd., P.O. Nabarun, WBPDCL,OS Dept. Corporate Office, 3/C,L.A Block, Dist. Murshidabad, West Bengal-742236 Salt Lake-III, Kolkata-700098 ( Fax-033-23350516) General Manager (O&M) General Manager (OS), ERHQ-II, NTPC Ltd., 3rd flr. Barh STPS, NTPC Ltd., P.O. NTPC Barh, OLIC Building, Plot no. N 17/2, Nayapalli, Unit-8 Dist. Patna, Bihar-803213 Bhubaneswar- 751012 (Fax No. 0674-2540919) General Manager(O&M), TSTPS, NTPC Ltd., General Manager (O&M), POWERGRID, Odisha P.O.Kaniha, Dist. Angul, Orissa-759117 Projects, Sahid Nagar, Bhubaneswar – 751 007 General Manager(OS), ERHQ-I, NTPC Ltd., Manager (Electrical), Adhunik Power & Natural Loknayak Jaiprakash Bhawan, (2nd Floor), Resources Ltd. “Lansdowne Towers, Kolkata-700020 Dak Bunglow Chawk, Patna-800001 ( Fax No. 033-2289 0285) Executive Director (O&M) Electrical Superintending Engineer, TTPS, NHPC Ltd., NHPC Office Complex, Sector-33, Tenughat Vidyut Nigam Ltd., Lalpania, Dist. Bokaro, Faridabad, Haryana-121003 ( Fax-01292272413 ) Jharkhand-829149 Dy. General Manager (Electrical) General Manager (OS), ER-I IB Thermal Power Station, OPGCL Power Grid Corporation of India Ltd., Banhapalli, Dist. Jharsuguda-768234,Orissa Alankar Place, Boring Road, Patna-800001 Chief Engineer (Trans.) Sr. Manager (CTMC) Power Deptt., Govt. of Sikkim, Gangtok-731010 Durgapur Projects Limited, Durgapur-713201 Executive Director, Head Construction, ENCIL, Siliguri-7340051 ERLDC, POSOCO, Tollygunge,Kolkata-700033 General Manager (OS), ER-II Shri A.K.Nayak/Shri Sumit S Ghosh Power Grid Corporation of India Ltd., Maithon Power Limited, Maithon Office, MA 5 J-I-15, Block-EP, Sector-V,Salt Lake,Kolkata-91 Gogna, Dist. Dhanbad, Jhankand State, PIN-828207 General Manager (P&O), PTC Ltd., Vice President, Vedanta Ltd. Kanchanjunga Bldg.,18, Barakhamba Road, 1st Floor, Module C/2, Fortune Tower, C S Pur, New Delhi-110001 Bhubaneswar- 751023 Managing Director, Bhutan Power Corporation Managing Director, Druk Green Power Corprn. Post Box no. 580, Thimpu, Bhutan. P.O. Box-1351, Thimpu, Bhutan. General Manager, Darbhanga(Bihar), Darbhanga Shri Brajesh Kumar Pande, Plant Head, JITPL. Motihari Transmission Company Limited (DMTCL) (FAX:011-26139256-65) Shri D. P. Bhagava, Chief Consultant (O&M), Teesta Director (GM Division), Central Electricity Authority Urja Limited, New Delhi (FAX:011-46529744) Sewa Bhawan, R. K. Puram, New Delhi-110066 Director (NPC), CEA, NRPC Building, Katwaria President, Dans Energy Pvt. Ltd, 5th Floor, DLF Sarai, New Delhi- 110016 Building No. 8, Tower-C, Gurgaon - 722OO2 Director, Shiga Energy Pw. Ltd., 5th Floor, DLF DGM (E&I), HALDIA ENERGY LIMITED, BARIK Building No. 8, Tower-C, Gurgaon - 722OO2 BHAWAN, KOKATA-700072, FAX: 033-22360955

CC:

ASSISTANT SECRETARY, ERPC

Annexure-I From Tripping Name Tripping Date & Time Element Type Element Name From Station FIR(F) DR(F) EL(F) To Owner To Station FIR(T) DR(T) EL(T) Owner 220 KV-KISHANGANJ 400KV-220 KV-KISHANGANJ NEW 220KV- 220KV KISHANGANJ(PG)-KISHANGANJ(BSPTCL)-II 31-03-2019 22:18:00 Transmission Line POWERGRID 220 KV-KISHANGANJ 400KV No No No BSPTCL 220 KV-KISHANGANJ NEW 220KV No No No 2 400 KV-DMTCL DARBHANGA 400kV-400 KV-KISHANGANJ 400KV DARBHANGA (DMTCL)-KISHANGANJ(PG)-2 31-03-2019 22:12:00 Transmission Line DMTCL 400 KV-DMTCL DARBHANGA 400kV No No No POWERGRID 400 KV-KISHANGANJ 400KV No No No 400KV-2 400 KV-Ranchi(400/220kV)-400 KV-Raghunathpur TPS 400KV RANCHI-RAGHUNATHPUR-II 31-03-2019 16:29:00 Transmission Line POWERGRID 400 KV-Ranchi(400/220kV) No Yes No DVC 400 KV-Raghunathpur TPS 20/400/220/33kV No No No 20/400/220/33kV-2 BANGLADES 400 KV-BEHRAMPUR 400kV-400 KV-BHERAMARA-DC 31-03-2019 15:21:00 Transmission Line 400 KV-BEHRAMPUR 400kV-400 KV-BHERAMARA-1 POWERGRID 400 KV-BEHRAMPUR 400kV No Yes No 400 KV-BHERAMARA No No No H BANGLADES 31-03-2019 15:21:00 Transmission Line 400 KV-BEHRAMPUR 400kV-400 KV-BHERAMARA-2 POWERGRID 400 KV-BEHRAMPUR 400kV No Yes No 400 KV-BHERAMARA No No No H 220 KV-CHUKHA-220 KV-BirparaPGCIL-1 31-03-2019 09:47:00 Transmission Line 220 KV-CHUKHA-220 KV-BirparaPGCIL-1 BHUTAN 220 KV-CHUKHA No No No POWERGRID 220 KV-BirparaPGCIL No Yes No

220 KV-ALIPURDUAR PGCIL 400/220kV-220 KV-SALAKATI-2 31-03-2019 09:07:00 Transmission Line 220 KV-ALIPURDUAR PGCIL 400/220kV-220 KV-SALAKATI-2 POWERGRID 220 KV-ALIPURDUAR PGCIL 400/220kV No Yes No POWERGRID 220 KV-SALAKATI No No No 400 KV-ALIPURDUAR PGCIL 400/220kV-400 KV-BONGAIGAON- 400 KV-ALIPURDUAR PGCIL 400/220kV-400 KV-BONGAIGAON- 31-03-2019 08:52:00 Transmission Line POWERGRID 400 KV-ALIPURDUAR PGCIL 400/220kV No Yes No POWERGRID 400 KV-BONGAIGAON No No No 1 2 220KV CHUKHA-BIRPARA-II 31-03-2019 07:45:00 Transmission Line 220 KV-CHUKHA-220 KV-BirparaPGCIL-2 BHUTAN 220 KV-CHUKHA No No No POWERGRID 220 KV-BirparaPGCIL No Yes No 400 KV-MERAMUNDALI 400KV-400 KV-Jindal steel and power 400 KV-Jindal steel and power Ltd. 400KV MEERAMUNDALI-JSPL-I 30-03-2019 13:13:00 Transmission Line OPTCL 400 KV-MERAMUNDALI 400KV Yes Yes No CPPs No No No Ltd. (Angul)11/400-1 (Angul)11/400 400 KV-MERAMUNDALI 400KV-400 KV-Jindal steel and power 400 KV-Jindal steel and power Ltd. 400KV MEERAMUNDALI-JSPL-II 30-03-2019 13:03:00 Transmission Line OPTCL 400 KV-MERAMUNDALI 400KV Yes Yes No CPPs No No No Ltd. (Angul)11/400-2 (Angul)11/400 400 KV-SAGARDIGHI(SGTPP)-400 KV-Farakka-2 30-03-2019 11:44:00 Transmission Line 400 KV-SAGARDIGHI(SGTPP)-400 KV-Farakka-2 WBPDCL 400 KV-SAGARDIGHI(SGTPP) No No No 400KV MEERAMUNDALI-MENDHASAL-SC 29-03-2019 13:06:00 Transmission Line 400 KV-MERAMUNDALI 400KV-400 KV-MENDHASAL-1 OPTCL 400 KV-MERAMUNDALI 400KV Yes Yes No OPTCL 400 KV-MENDHASAL No No No 400 KV-Arambag 400kV--1 29-03-2019 04:30:00 Transformer 400 KV-Arambag 400kV--2 WBSETCL 400 KV-Arambag 400kV No No No 220 KV-Farakka(400/220/15.75 )-220 KV- 220 KV-Farakka(400/220/15.75 )-220 KV- 28-03-2019 13:05:00 Transmission Line NTPC 220 KV-Farakka(400/220/15.75 ) No No No JUSNL 220 KV-Lalmatia(220/132/33kV) No No No Lalmatia(220/132/33kV)-1 Lalmatia(220/132/33kV)-1 220KV DEHRI-GAYA-I 27-03-2019 13:08:00 Transmission Line 220 KV-DEHRI 220KV-220 KV-GAYA 765KV-1 BSPTCL 220 KV-DEHRI 220KV Yes Yes Yes POWERGRID 220 KV-GAYA 765KV No Yes No 400 KV-Binaguri 400 Kv-400 KV-ALIPURDUAR PGCIL GI-II at Binaguri 27-03-2019 12:42:00 Transmission Line POWERGRID 400 KV-Binaguri 400 Kv No Yes No POWERGRID 400 KV-ALIPURDUAR PGCIL 400/220kV No No No 400/220kV-2 27-03-2019 12:42:00 Transmission Line 400 KV-Binaguri 400 Kv-400 KV-NEW PURNEA 400KV-1 POWERGRID 400 KV-Binaguri 400 Kv No Yes No POWERGRID 400 KV-NEW PURNEA 400KV No No No

27-03-2019 12:42:00 Transmission Line 400 KV-Binaguri 400 Kv-400 KV-NEW PURNEA 400KV-2 POWERGRID 400 KV-Binaguri 400 Kv No No No POWERGRID 400 KV-NEW PURNEA 400KV No No No

27-03-2019 12:42:00 Bus 400 KV-Binaguri 400 Kv--1 POWERGRID 400 KV-Binaguri 400 Kv No Yes No POWERGRID No No No 400 KV-Binaguri 400 Kv-400 KV-ALIPURDUAR PGCIL 400KV BINAGURI-ALIPURDUAR-II 27-03-2019 11:34:00 Transmission Line POWERGRID 400 KV-Binaguri 400 Kv No No No POWERGRID 400 KV-ALIPURDUAR PGCIL 400/220kV No Yes No 400/220kV-2 400KV KHARAGPUR-CHAIBASA-I 26-03-2019 13:47:00 Transmission Line 400 KV-Kharagpur 400kV-400 KV-Chaibasa(400/220kV)-1 WBSETCL 400 KV-Kharagpur 400kV No No No POWERGRID 400 KV-Chaibasa(400/220kV) No No No

400KV KHARAGPUR-CHAIBASA-II 26-03-2019 12:59:00 Transmission Line 400 KV-Kharagpur 400kV-400 KV-Chaibasa(400/220kV)-2 WBSETCL 400 KV-Kharagpur 400kV No No No POWERGRID 400 KV-Chaibasa(400/220kV) No Yes No 400 KV-Ranchi(400/220kV)-400 KV-Raghunathpur TPS 400KV RANCHI-RAGHUNATHPUR-II 26-03-2019 11:08:00 Transmission Line POWERGRID 400 KV-Ranchi(400/220kV) No Yes No DVC 400 KV-Raghunathpur TPS 20/400/220/33kV No No No 20/400/220/33kV-2 400 KV-ALIPURDUAR PGCIL 400/220kV-400 KV-BONGAIGAON- 400KV ALIPURDUAR-BONGAIGAON-II 26-03-2019 10:17:00 Transmission Line POWERGRID 400 KV-ALIPURDUAR PGCIL 400/220kV No Yes No POWERGRID 400 KV-BONGAIGAON No No No 2 220 KV-JODA220KV-220 KV-Ramchandrapur(220/132/33kV)- 220KV JODA-RAMCHANDRAPUR-SC 26-03-2019 08:15:00 Transmission Line OPTCL 220 KV-JODA220KV Yes Yes Yes JUSNL 220 KV-Ramchandrapur(220/132/33kV) No No No 1 NORTHERN 220KV PUSAULI-SAHUPURI-SC 26-03-2019 05:30:00 Transmission Line 220 KV-SASARAM 765KV-220 KV-SAHUPURI-1 POWERGRID 220 KV-SASARAM 765KV No Yes No 220 KV-SAHUPURI No No No REGION 220KV MUZAFFARPUR--DHALKEBAR-I 26-03-2019 04:57:00 Transmission Line 220 KV-MUZAFFARPUR 400KV-220 KV-DHALKEBAR-1 POWERGRID 220 KV-MUZAFFARPUR 400KV No Yes No NEPAL 220 KV-DHALKEBAR No No No

220KV MUZAFFARPUR-DHALKEBAR-II 26-03-2019 04:57:00 Transmission Line 220 KV-MUZAFFARPUR 400KV-220 KV-DHALKEBAR-2 POWERGRID 220 KV-MUZAFFARPUR 400KV No Yes No NEPAL 220 KV-DHALKEBAR No No No

220KV MUZAFFARPUR-DHALKEBAR-I 26-03-2019 04:06:00 Transmission Line 220 KV-MUZAFFARPUR 400KV-220 KV-DHALKEBAR-1 POWERGRID 220 KV-MUZAFFARPUR 400KV No No No NEPAL 220 KV-DHALKEBAR No No No 400 KV-Ranchi(400/220kV)-400 KV-Raghunathpur TPS 400KV RANCHI-RAGHUNATHPUR-II 25-03-2019 21:02:00 Transmission Line POWERGRID 400 KV-Ranchi(400/220kV) No Yes No DVC 400 KV-Raghunathpur TPS 20/400/220/33kV No No No 20/400/220/33kV-2 400KV ARAMBAGH-NEW CHANDITALA 25-03-2019 09:36:00 Transmission Line 400 KV-Arambag 400kV-400 KV-New Chanditola 400 kV-1 WBSETCL 400 KV-Arambag 400kV No No No WBSETCL 400 KV-New Chanditola 400 kV No No No

220KV DEHRI -GAYA-II 24-03-2019 12:39:00 Transmission Line 220 KV-DEHRI 220KV-220 KV-GAYA 765KV-2 BSPTCL 220 KV-DEHRI 220KV Yes Yes Yes POWERGRID 220 KV-GAYA 765KV No Yes No 400 KV-PPSP 400kV-400 KV-BIDHANNAGAR/DURGAPR 400KV- 400KV PPSP-BIDHANNAGAR-I 23-03-2019 13:31:00 Transmission Line WBSEDCL 400 KV-PPSP 400kV No No No WBSETCL 400 KV-BIDHANNAGAR/DURGAPR 400KV No No No 1 220 KV-Mithon(400/220kV)-220 KV- 220KV MAITHON-DUMKA-II 23-03-2019 12:36:00 Transmission Line POWERGRID 220 KV-Mithon(400/220kV) No Yes No JUSNL 220 KV-Dumka_MADANPUR(220/132kV) No No No Dumka_MADANPUR(220/132kV)-2 400 KV-BIDHANNAGAR/DURGAPR 400KVhandi-400 KV-New 400KV BIDHANNAGAR-NEW CHANDITALA-SC 22-03-2019 17:30:00 Transmission Line 400 KV-BIDHANNAGAR/DURGAPR 400KVhandi WBSETCL 400 KV-New Chanditola 400 kV No No No Chanditola 400 kV-1 400KV JEERAT-NEW CHANDITALA-SC 22-03-2019 17:00:00 Transmission Line 400 KV-JEERAT 400kV-400 KV-New Chanditola 400 kV-1 WBSETCL 400 KV-JEERAT 400kV No No No WBSETCL 400 KV-New Chanditola 400 kV No No No 400 KV-Ranchi(400/220kV)-400 KV-Raghunathpur TPS 400KV RANCHI-RAGHUNATHPUR-II 22-03-2019 14:22:00 Transmission Line POWERGRID 400 KV-Ranchi(400/220kV) No Yes No DVC 400 KV-Raghunathpur TPS 20/400/220/33kV No No No 20/400/220/33kV-2 400 KV-PPSP 400kV-400 KV-BIDHANNAGAR/DURGAPR 400KV- 400KV PPSP-BIDHANNAGAR-I 22-03-2019 13:55:00 Transmission Line WBSEDCL 400 KV-PPSP 400kV No No No WBSETCL 400 KV-BIDHANNAGAR/DURGAPR 400KV No No No 1 220KV MADHEPURA-NEW PURNEA-I 22-03-2019 13:51:00 Transmission Line 220 KV-MADHEPURA 220KV-220 KV-PURNEA 220KV-1 BSPTCL 220 KV-MADHEPURA 220KV No No No POWERGRID 220 KV-PURNEA 220KV No Yes No

220KV DEHRI -GAYA-II 21-03-2019 13:20:00 Transmission Line 220 KV-DEHRI 220KV-220 KV-GAYA 765KV-2 BSPTCL 220 KV-DEHRI 220KV Yes Yes Yes POWERGRID 220 KV-GAYA 765KV No No No NORTHERN 400KV PUSAULI(PG)-ALLAHABAD-SC 20-03-2019 21:23:00 Transmission Line 400 KV-SASARAM 765KV-400 KV-ALLAHABAD-1 POWERGRID 400 KV-SASARAM 765KV No Yes No 400 KV-ALLAHABAD No No No REGION 400KV JEERAT-NEW CHANDITALA-SC 20-03-2019 20:15:00 Transmission Line 400 KV-JEERAT 400kV-400 KV-New Chanditola 400 kV-1 WBSETCL 400 KV-JEERAT 400kV No No No WBSETCL 400 KV-New Chanditola 400 kV No No No 400KV BARIPADA-KHARAGPUR-SC 20-03-2019 13:53:00 Transmission Line 400 KV-BARIPADA KUCHEI 400KV-400 KV-Kharagpur 400kV-1 POWERGRID 400 KV-BARIPADA KUCHEI 400KV No No No WBSETCL 400 KV-Kharagpur 400kV No No No

220KV RAJARHAT-JEERAT-I[BELONGS TO WBSETCL] 17-03-2019 18:49:00 Transmission Line 220 KV-RAJARHAT(400/220KV)-220 KV-JEERAT 400kV-1 POWERGRID 220 KV-RAJARHAT(400/220KV) No Yes No WBSETCL 220 KV-JEERAT 400kV No No No 220 KV-Farakka(400/220/15.75 )-220 KV- 220KV FSTPP-LALMATIA-SC 15-03-2019 19:05:00 Transmission Line NTPC 220 KV-Farakka(400/220/15.75 ) No No No JUSNL 220 KV-Lalmatia(220/132/33kV) No No No Lalmatia(220/132/33kV)-1 400 KV-Ranchi(400/220kV)-400 KV-Raghunathpur TPS 400KV RANCHI-RAGHUNATHPUR-II 15-03-2019 16:56:00 Transmission Line POWERGRID 400 KV-Ranchi(400/220kV) No Yes No DVC 400 KV-Raghunathpur TPS 20/400/220/33kV No No No 20/400/220/33kV-2 400KV KISHANGANJ(PG)-RANGPO-SC[BELONGS TO TVTPL] 15-03-2019 15:07:00 Transmission Line 400 KV-KISHANGANJ 400KV-400 KV-RANGPO 400KV-1 POWERGRID 400 KV-KISHANGANJ 400KV No No No POWERGRID 400 KV-RANGPO 400KV No Yes No 400KV KOLAGHAT-KHARAGPUR-II 15-03-2019 13:33:00 Transmission Line 400 KV-Kolaghat TPS 400kV-400 KV-Kharagpur 400kV-2 WBPDCL 400 KV-Kolaghat TPS 400kV No No No WBSETCL 400 KV-Kharagpur 400kV No No No Lapanga Event 15-03-2019 12:02:00 Transmission Line 400 KV-LAPANGA 400KV-400 KV-MERAMUNDALI 400KV-1 OPTCL 400 KV-LAPANGA 400KV Yes Yes Yes OPTCL 400 KV-MERAMUNDALI 400KV Yes Yes No

15-03-2019 12:02:00 Transmission Line 400 KV-LAPANGA 400KV-400 KV-MERAMUNDALI 400KV-2 OPTCL 400 KV-LAPANGA 400KV Yes Yes Yes OPTCL 400 KV-MERAMUNDALI 400KV Yes Yes No VEDANTA 15-03-2019 12:02:00 Transmission Line 400 KV-LAPANGA 400KV-400 KV-STERLITE400KV -1 OPTCL 400 KV-LAPANGA 400KV Yes Yes Yes 400 KV-STERLITE400KV No No No LTD VEDANTA 15-03-2019 12:02:00 Transmission Line 400 KV-LAPANGA 400KV-400 KV-STERLITE400KV -2 OPTCL 400 KV-LAPANGA 400KV Yes Yes Yes 400 KV-STERLITE400KV No No No LTD 220KV DEHRI-GAYA-I 15-03-2019 11:54:00 Transmission Line 220 KV-DEHRI 220KV-220 KV-GAYA 765KV-1 BSPTCL 220 KV-DEHRI 220KV Yes Yes Yes POWERGRID 220 KV-GAYA 765KV No Yes No

220KV MUZAFFARPUR-DHALKEBAR-I 14-03-2019 21:31:00 Transmission Line 220 KV-MUZAFFARPUR 400KV-220 KV-DHALKEBAR-1 POWERGRID 220 KV-MUZAFFARPUR 400KV No No No NEPAL 220 KV-DHALKEBAR No No No 400 KV-Ranchi(400/220kV)-400 KV-Raghunathpur TPS 400KV RANCHI-RAGHUNATHPUR-II 14-03-2019 16:21:00 Transmission Line POWERGRID 400 KV-Ranchi(400/220kV) No Yes No DVC 400 KV-Raghunathpur TPS 20/400/220/33kV No No No 20/400/220/33kV-2 VEDANTA Sterlite event 14-03-2019 13:39:00 Transmission Line 400 KV-JHARSUGUDA 765 KV-400 KV-STERLITE400KV -1 POWERGRID 400 KV-JHARSUGUDA 765 KV Yes Yes Yes 400 KV-STERLITE400KV No No No LTD VEDANTA 14-03-2019 13:39:00 Transmission Line 400 KV-JHARSUGUDA 765 KV-400 KV-STERLITE400KV -2 POWERGRID 400 KV-JHARSUGUDA 765 KV Yes Yes Yes 400 KV-STERLITE400KV No No No LTD VEDANTA 14-03-2019 13:39:00 Transmission Line 400 KV-STERLITE400KV -400 KV-LAPANGA 400KV-1 400 KV-STERLITE400KV No No No OPTCL 400 KV-LAPANGA 400KV Yes Yes Yes LTD VEDANTA 14-03-2019 13:39:00 Transmission Line 400 KV-STERLITE400KV -400 KV-LAPANGA 400KV-2 400 KV-STERLITE400KV No No No OPTCL 400 KV-LAPANGA 400KV Yes Yes Yes LTD 220 KV-Farakka(400/220/15.75 )-220 KV- 220KV FSTPP-LALMATIA-SC 14-03-2019 11:55:00 Transmission Line NTPC 220 KV-Farakka(400/220/15.75 ) No No No JUSNL 220 KV-Lalmatia(220/132/33kV) No No No Lalmatia(220/132/33kV)-1 400KV ARAMBAGH-BAKRESWAR-SC 13-03-2019 12:14:00 Transmission Line 400 KV-Arambag 400kV-400 KV-BAKRESWAR 400kV-1 WBSETCL 400 KV-Arambag 400kV No No No WBPDCL 400 KV-BAKRESWAR 400kV Yes Yes Yes 400 KV-DURGAPUR PGCIL 400/220kV-400 KV- 400 KV-DURGAPUR PGCIL 400/220kV-400 KV- 13-03-2019 11:45:00 Transmission Line POWERGRID 400 KV-DURGAPUR PGCIL 400/220kV No Yes No WBPDCL 400 KV-SAGARDIGHI(SGTPP) No No No SAGARDIGHI(SGTPP)-2[BELONGS TO WBSETCL] SAGARDIGHI(SGTPP)-2 400 KV-NEW DUBURI 400KV-400 KV-MERAMUNDALI 400KV- 400KV NEW DUBURI-MEERAMUNDALI-II 13-03-2019 11:18:00 Transmission Line OPTCL 400 KV-NEW DUBURI 400KV Yes Yes No OPTCL 400 KV-MERAMUNDALI 400KV Yes Yes No 2 400 KV-NEW DUBURI 400KV-400 KV-MERAMUNDALI 400KV- 12-03-2019 14:38:00 Transmission Line OPTCL 400 KV-NEW DUBURI 400KV Yes Yes No OPTCL 400 KV-MERAMUNDALI 400KV Yes Yes No 2 400KV KHARAGPUR-CHAIBASA-I 12-03-2019 13:17:00 Transmission Line 400 KV-Kharagpur 400kV-400 KV-Chaibasa(400/220kV)-1 WBSETCL 400 KV-Kharagpur 400kV No No No POWERGRID 400 KV-Chaibasa(400/220kV) No Yes No

400KV KHARAGPUR-CHAIBASA-II 12-03-2019 12:39:00 Transmission Line 400 KV-Kharagpur 400kV-400 KV-Chaibasa(400/220kV)-2 WBSETCL 400 KV-Kharagpur 400kV No No No POWERGRID 400 KV-Chaibasa(400/220kV) No Yes No

400KV NEW PURNEA-BIHARSARIFF(PG)-II 12-03-2019 12:32:00 Transmission Line 400 KV-NEW PURNEA 400KV-400 KV-BIHARSHARIFF 400KV-2 POWERGRID 400 KV-NEW PURNEA 400KV No No No POWERGRID 400 KV-BIHARSHARIFF 400KV No No No 400KV JEERAT-BAKRESWAR-SC 12-03-2019 11:50:00 Transmission Line 400 KV-JEERAT 400kV-400 KV-BAKRESWAR 400kV-1 WBSETCL 400 KV-JEERAT 400kV No Yes No WBPDCL 400 KV-BAKRESWAR 400kV Yes Yes Yes 220 KV-Farakka(400/220/15.75 )-220 KV- 220KV FSTPP-LALMATIA-SC 12-03-2019 09:58:00 Transmission Line NTPC 220 KV-Farakka(400/220/15.75 ) No No No JUSNL 220 KV-Lalmatia(220/132/33kV) No No No Lalmatia(220/132/33kV)-1 400 KV-Ranchi(400/220kV)-400 KV-Raghunathpur TPS 400KV RANCHI-RAGHUNATHPUR-II 11-03-2019 00:41:00 Transmission Line POWERGRID 400 KV-Ranchi(400/220kV) No Yes No DVC 400 KV-Raghunathpur TPS 20/400/220/33kV No No No 20/400/220/33kV-2 400 KV-Ranchi(400/220kV)-400 KV-Raghunathpur TPS 400KV RANCHI-RAGHUNATHPUR-III 11-03-2019 00:41:00 Transmission Line POWERGRID 400 KV-Ranchi(400/220kV) No Yes No DVC 400 KV-Raghunathpur TPS 20/400/220/33kV No No No 20/400/220/33kV-3 WESTERN Grid event at Dharamjaigarh 09-03-2019 16:10:00 Transmission Line 765 KV-JHARSUGUDA 765 KV-765 KV-DHARAMJAYGARH-1 POWERGRID 765 KV-JHARSUGUDA 765 KV Yes Yes Yes 765 KV-DHARAMJAYGARH No No No REGION WESTERN 09-03-2019 16:10:00 Transmission Line 765 KV-JHARSUGUDA 765 KV-765 KV-DHARAMJAYGARH-4 POWERGRID 765 KV-JHARSUGUDA 765 KV Yes Yes Yes 765 KV-DHARAMJAYGARH No No No REGION 220 KV-Farakka(400/220/15.75 )-220 KV- 220KV FSTPP-LALMATIA-SC 09-03-2019 10:49:00 Transmission Line NTPC 220 KV-Farakka(400/220/15.75 ) No No No JUSNL 220 KV-Lalmatia(220/132/33kV) No No No Lalmatia(220/132/33kV)-1 400 KV-DURGAPUR PGCIL 400/220kV-400 KV- 400KV DURGAPUR-FSTPP-II 08-03-2019 15:03:00 Transmission Line POWERGRID 400 KV-DURGAPUR PGCIL 400/220kV No Yes No NTPC 400 KV-Farakka(400/220/15.75 ) No No No Farakka(400/220/15.75 )-2 400KV KHARAGPUR-CHAIBASA-II 07-03-2019 10:32:00 Transmission Line 400 KV-Kharagpur 400kV-400 KV-Chaibasa(400/220kV)-2 WBSETCL 400 KV-Kharagpur 400kV No No No POWERGRID 400 KV-Chaibasa(400/220kV) No No No

400KV KISHANGANJ-TEESTA-III-SC 06-03-2019 16:15:00 Transmission Line 400 KV-KISHANGANJ 400KV-400 KV-Teesta III-1 POWERGRID 400 KV-KISHANGANJ 400KV No No No TUL 400 KV-Teesta III No Yes Yes

400KV RAJARHAT-JEERAT-SC 04-03-2019 19:23:00 Transmission Line 400 KV-RAJARHAT(400/220KV)-400 KV-JEERAT 400kV-1 POWERGRID 400 KV-RAJARHAT(400/220KV) No Yes No WBSETCL 400 KV-JEERAT 400kV No No No

220KV BARIPADA-BALASORE-II 02-03-2019 05:23:00 Transmission Line 220 KV-KUCHEI BARIPADA 400KV-220 KV-BALASORE 220KV-2 POWERGRID 220 KV-KUCHEI BARIPADA 400KV Yes Yes No OPTCL 220 KV-BALASORE 220KV No No No

400 KV-NEW PURNEA 400KV-400 KV-BIHARSHARIFF 400KV-1 02-03-2019 00:08:00 Transmission Line 400 KV-NEW PURNEA 400KV-400 KV-BIHARSHARIFF 400KV-1 POWERGRID 400 KV-NEW PURNEA 400KV No No No 400 KV-BIHARSHARIFF 400KVza-400 KV-MUZAFFARPUR 400KV BIHARSARIFF(PG)-MUZAFFARPUR(PG)-I 01-03-2019 10:20:00 Transmission Line 400 KV-BIHARSHARIFF 400KVza POWERGRID 400 KV-MUZAFFARPUR 400KV No No No 400KV-1