Islanding Scheme Covering Bengaluru Metropolitan Area

Southern Regional Power Committee Bengaluru

Minutes of the Meeting to deliberate on Islanding Scheme for Bangalore, held on 16.02.2021 through WebEx.

A meeting to discuss formation of Islanding Scheme for Bangalore was held on 16.02.2021 under the chairmanship of Member Secretary (MS), SRPC in on-line mode though WebEx. The list of participants is attached at Annexure-I.

2. MS, SRPC welcomed all the participants to the meeting. He informed the forum that in the meeting held on 28.12.2020, to review Islanding Schemes in the country, Hon’ble Minister of State (IC) for Power and New & Renewable Energy, Government of India directed that Islanding Schemes should be designed for all major cities of the country, including Bangalore. Accordingly, SRPC was directed to take steps for devising an Islanding scheme covering Bangalore area. Member Secretary pointed out that absence of embedded generation has been a major drawback to have islanding scheme in Bangalore. However, considering the economy-driving aspects of Bangalore, like IT sector, Medical companies, Laboratories, Defence installations, and metro rail, etc., it is sensible to design and put in place an apt Islanding scheme for Bangalore area so that all its major loads can be guaranteed to remain immune to external grid failures.

3. Then, Superintending Engineer (P&SS), SRPC presented the philosophy adopted in identifying the Islanding Schemes that are under operation in Southern Region (SR), and detailed the guidelines being followed to form Islanding. The salient aspects, as given under, were explained:  Approved Islanding Schemes in southern region are non-adaptive in nature. That is Islands are formed with anticipated load-generation balance and with tripping of predetermined feeders/ ICTs/ generators.  Islanded system should preferably have 20% excess generation than load.  Islanding scheme should preferably have a good mix of Thermal–Hydro–Gas based generation.  Under Frequency Relays (UFRs), meant for giving load relief, should not be present on the Islanding feeders.  Island should be formed by tripping minimum number of lines.  Generators in the Islanded system should be kept on FGMO/RGMO.  Load flow studies are to be carried out for verifying the operation of the Islanded system.  Wind/ solar generating feeders shall not form part of Islanding Scheme; hence incoming wind/ solar feeders to the substation are to be tripped at Islanding Frequency.  All generation shall go to House-Load in the unavoidable eventuality of unsuccessful formation of Island.  If the frequency rises above 52 Hz even after FGMO/RGMO operation (due to non- availability of anticipated loads at the time of separation), high-frequency time-graded tripping of generators is to be carried out.

Minutes of the Meeting to deliberate Islanding Scheme for Bangalore held on 16.02.2021 1/3 4. SE (P&SS) stated that keeping above in view, a preliminary analysis was made w.r.t. the proposed Islanding Scheme for three scenarios. First case considering Bangalore exclusively, second case considering Bangalore and Mysore together and third case covering entire Karnataka state.  The quantum of loads considered for these three scenarios based on latest PSSE ATC Basecase data were presented as below:

Area Avg. Peak df/dt Load AUFR Load Load Anticipated Load in MW Relief in MW Relief in MW Diversity Load in MW (a) (b) (c) Factor [=dx(a-b-c)] (d) Bengaluru 3434 976 672 1 1786 Extended 4038 1180 928 1 1930 Bengaluru (Bengaluru & Mysore) Karnataka State 9657 1476.88 3221.18 1 4959

 For each of the above cases, the details of the generators (with their actual PLF’s as furnished by concerned SR-Utilities) to be considered in suitable combinations so as to maintain requisite LGBR in the proposed Island were explained as below:  Bangalore Island Option 1: Suitable Generation including Talcher Option 2: Suitable Generation excluding Talcher

 Extended Bengaluru (Bengaluru & Mysore) Island Option 1: Suitable Generation including Talcher Option 2: Suitable Generation excluding Talcher

 Karnataka State Island

The LGBR in the proposed Island for above five cases is as follows: Case Area Participating Generators Anticipated Anticipated No. Generation Load, MW (MW) 1 Bengaluru T,K,S 2180 1786 2 Bengaluru R,B,K,S 1985 1786 3 Extended T,U,S 2180 1930 Bengaluru (Bengaluru & Mysore) 4 Extended K,B,R,U,S 2345 1930 Bengaluru (Bengaluru & Mysore) 5 Karnataka K,T,B,R,U,S,Y,N,V,Ka, OH 5660 4959 State

Desired Island formation by tripping requisite lines/ ICT’s for all above cases was demonstrated.

Minutes of the Meeting held on 16.02.2021 to deliberate Islanding Scheme for Bangalore 2/3 

 In this regard, SLDC, KPTCL suggested that Varahi hydel station would be a good generation source to be included in the island(s) considering the Pelton wheel turbines available there, which would facilitate flexibility within island.  Constituents also expressed that generation from Talcher (Stage-II) through Talcher- Kolar HVDC link is a dependable one, and should be included in the proposed Island. Further, it was also noted that the no. of elements to be tripped would be limited, if Talcher generation is taken into account.

The details of the presentation made by SRPC are given at Annexure-II.

5. CGM, SRLDC stated that formation of Bangalore island was under consideration for a long time and still it remains to be a big challenge. The options of considering small area islands and big area island covering whole Bangalore were indeed challenging. Small islands integration would also pose a problem. 6. Subsequently, SRLDC presented three cases of islanding within Bangalore, viz., Kolar-HVDC Island (1800 MW load- have to restrict load to 1200 MW), Yelahanka Island (310 MW load) and Nelamangala Island (1100 MW load). SRLDC pointed out that the schemes ought to be adaptive.  SRLDC stated that regarding Kolar-HVDC island, viability of operation in frequency control mode may be confirmed from the officers concerned at PGCIL, Kolar HVDC. Also the dynamic nature of the HVDC need to be considered, in addition to the load generation balance. Another concern would be the short circuit level in the Kolar, Somanahalli and Hoody substations proposed to be covered under the Kolar-HVDC island. Load would be decided based on no. of units available at Talcher.  It was mentioned by SRLDC that under Nelamangala island Peenya, Devanahalli area and, if required, Mysore area could also be considered. The loads would be fed through 400kV BTPS-Jindal-BPS – Chikanayakahalli - Nelamangala D/C, 400kV Talaguppa - Chikanayakahalli- Nelamangala D/C and 400kV Nelamangala - Bidadi D/C. Generation to be decided at BPS based on unit availability. Would sense number of units available at RTPS, BTPS, Jindal and depending on units available, 400kV lines to be tripped at BPS end.  Yelahanka island would be considered along with the upcoming Yelahanka gas generating plant (1X370 MW). To this, SLDC, KPTCL pointed out that the upcoming Yelahanka CCGP would be unlikely on bar continually (i.e., it may operate at low PLF).  SE(MRT), KPTCL also opined that the sub-islands, within Bangalore, as proposed could be considered, including generation at Varahi HEP and UPCL (Thermal).

The details of the presentation made by SRLDC are given at Annexure-III.

7. BESCOM was requested to identify important and critical loads and feeders in Bangalore, which would be an essential input.

8. During the discussion, MS, SRPC stated that as it would be difficult to predict success of any island and also Bangalore islanding being a special case, a scheme for Bangalore islanding has to be devised and implemented without having any preconceived notion about island formation. He suggested for forming a larger island at frequency before 47.9 Hz, and then forming smaller islands at usual islanding frequency i.e. 47.9 Hz.

Minutes of the Meeting held on 16.02.2021 to deliberate Islanding Scheme for Bangalore 3/3 

9. The meeting concluded with the decision to constitute a Task Force, comprising members from SRPC, SRLDC, KPTCL, SLDC-KPTCL and BESCOM to study in detail the options presented, viz., Bengaluru Island, Karnataka State Island and the sub-Bangalore islands. SRLDC suggested that HVDC, Kolar Officials may also be invited to the meeting of the Task Force.

*****

Minutes of the Meeting held on 16.02.2021 to deliberate Islanding Scheme for Bangalore 4/3  ANNEXURE-I SRPC Meeting to deliberate Islanding Scheme for Bangalore held on 16.02.2021 List of Participants Sl. No. Name Designaton Organisation Phone Email 1 S.P.Kumar CGM SRLDC, POSOCO 9449599163 [email protected] 2 Goodelli Madhukar Chief Manager SRLDC, POSOCO 9449599194 [email protected] 3 M. Pradeep Reddy Manager SRLDC, POSOCO 4 L Sharath Chand Manager SRLDC, POSOCO 5 Uday Trivedi Vice President UPCL-Adani Power Limited 9099055054 [email protected] 6 M Shanthi CEE RT&R&D KPTCL 9448365163 [email protected] 7 BV Girish SEE RT Zone KPTCL 8277893665 [email protected] 8 Nagaraj MC i/c SEE, RT Circle KPTCL Bengaluru 9448365077 [email protected] 9 Pushpa S EEE RT KPTCL 9480812570 [email protected] 10 Rajeshwari bhat AEE RT KPTCL 9448365116 [email protected] 11 Sumana Bhat AEE RT KPTCL 9448365110 [email protected] 12 Vidya M J AE RT KPTCL 9480813622 [email protected] 13 K.S.Shenoy SEE KPCL 9449599083 [email protected] 14 Channabasavarju EEE KPCL 9481547035 [email protected] 15 Rajgopal S EEE KPCL 9449755384 [email protected] 16 Pradeep M AE KPCL 9141607644 [email protected] 17 Krishnegowda L K AE KPCL 9141607619 [email protected] 18 A. BALAN Member Secretary SRPC [email protected] 19 N R L K PRASAD Superintendenting Engineer SRPC [email protected] 20 LEN. J.B Executive Engineer SRPC 9449682204 [email protected] 21 BETSY SEBASTIAN Assistant Executive Engineer SRPC [email protected] Annexure-II Islanding Scheme covering Bengaluru Metropolitan area

A. Introduction:  The basic idea of islanding scheme is to devise a defense mechanism as a final stage remedial measure for power system defense plan in which a part of the system is islanded from a disturbed grid so that if healthy, this subpart could survive in isolation from rest of grid.

 Islanding should take place only when all other defense plan have been allowed their full opportunity to bring back and maintain system integrity and still the health of integrated system is on path of deterioration towards failure.

 Basic motivation for devising an islanding scheme is that it helps us in saving from total blackout during a major grid disturbance. A successfully survived island also helps in quicker restoration of grid.

 It is necessary to ensure that islanding schemes operate only as a final stage defense mechanism. For this we must keep operational frequency band for pre-islanding defence mechanism and islanding frequency band sufficiently apart. This frequency gap is necessary to take care of continued fall of frequency during the interval between relay pick-up and breaker opening. Similarly, a clear gap between frequency band of normal operation and highest setting of U/F load shedding relays is also necessary.

 In southern region, the following frequency bands have been adopted for normal operation of the grid and triggering various frequency based pre-islanding defense mechanisms:

Operating df/dt df/dt AUFR AUFR AUFR AUFR Frequency (Stage-I) (Stage-II) (Stage-I) (Stage-II) (Stage-III) (Stage-IV) Band Frequency Frequency Frequency Frequency

49.5 Hz & 49.3 Hz & 0.2 0.3 Hz/sec 50.05

– Hz/sec fall fall of 49.2 49.0 48.8 48.6 of frequency

49.95 frequency

 In case of further frequency fall, the islanding is designed to take place at 47.9 Hz. The gap of 0.7 Hz before islanding will give sufficient time for the system to regain its stability.

 The approved Islanding Schemes in Southern Region are non-adaptive in nature; Islands are formed with anticipated Load Generation balance and with tripping of pre-decided feeders at 47.9Hz.

Page 1 of 18 Annexure-II  In southern region, there are four Islanding Schemes (IS) in operation and one Islanding Scheme under implementation as given below:

Name of the Size of the Area served Functional Islanding Island in Status scheme terms of participating Generators, MW Ramagundam/ 4900 Hyderabad & its Under Operation Hyderabad IS surrounding areas Chennai IS 4600 Chennai & its Under Operation surrounding areas Neyveli IS 7000 Neyveli & its Under Operation surrounding areas Kudankulam IS 6300 Kudankulam, Under Operation Tirunelveli & its surrounding areas Simhadri IS 4900 Visakhapatnam & Under its surrounding Implementation areas

B. Guidelines adopted for identifying Islands in Southern Region:

 Approved Islanding Schemes in southern region are non-adaptive in nature. That is Islands are formed with anticipated load-generation balance and with tripping of predetermined feeders/ ICTs/ generators.

 Islanded system should preferably have 20% excess generation than load.

 Islanding scheme should preferably have a good mix of Thermal–Hydro– Gas based generation.

 No Under Frequency Relays (UFRs) should be present on the Islanding feeders.

 Island should be formed by tripping minimum number of lines.

 Generators in the Islanded system should be kept on FGMO/RGMO.

 Load flow studies are to be carried out for verifying the operation of the Islanded system. Page 2 of 18 Annexure-II  Wind/ solar generating feeders shall not form part of Islanding Scheme; hence incoming wind/ solar feeders to the substation are to be tripped at Islanding Frequency.

 All generation shall go to House-Load in the unavoidable eventuality of unsuccessful formation of Island.

 If the frequency rises above 52 Hz even after FGMO/RGMO operation (due to non-availability of anticipated loads at the time of separation), high-frequency time-graded tripping of generators is to be carried out.

The present Islanding Scheme covering Bengaluru metropolitan area is in pursuance of the direction given by Honb’le MoSP, GoI in the meeting held on 28.12.2020.

C. Details of the Loads in Karnataka:

Bus No Bus Name Pload (MW) Qload (Mvar) 432204 ITI 220.00 1.8371 0.6038 432028 HAROHALLI 220.00 3.9776 1.3074 432146 MAGADI 220.00 3.9776 1.3074 432202 BRINDAVAN 220.00 4.5919 1.5093 432173 JIGANI 220.00 7.6347 2.5094 432144 CPRI 220.00 8.2011 2.6956 432199 KORAMANGALA 220.00 9.1848 3.0189 431298 NITTUR 110.00 9.7034 3.1893 431298 NITTUR 110.00 12.2974 4.042 432041 ITPL 220.00 14.7402 4.8449 432046 KBCROSS 220.00 19.1369 6.29 432046 KBCROSS 220.00 19.1369 6.29 432014 BEGUR-BIAL 220.00 19.9081 6.5435 432150 KHODAYS 220.00 29.7981 9.7942 432099 BIDADI 220.00 31.0793 10.2153 432084 TATAGUNI 220.00 33.5891 11.0402 432072 SARJAPUR 220.00 42.4112 13.9399 431563 NITTUR 110.00 42.5949 14.0003 432184 MANYATA 220.00 44.8617 14.7453 432138 NIMANS 220.00 49.5435 16.2842 432117 ASTATION 220.00 59.0393 19.4053 432183 VT PARK 220.00 60.8841 20.0116 432099 BIDADI 220.00 61.1788 20.1085 432044 KADUR 220.00 70.3626 23.1271 432063 NAGNATHPURA 220.00 72.9394 23.974 432045 KANKAPURA 220.00 74.5057 24.4888 432177 HW PARK 220.00 79.8076 26.2315 432068 NRS 220.00 83.8063 27.5458 Page 3 of 18 Annexure-II 432130 EDC 220.00 87.2069 28.6635 432191 MALUR_SPL 220.00 97.0155 31.8875 432039 HSR 220.00 99.8238 32.8105 432022 DABASPET 220.00 102.637 33.7351 432038 HOSKOT 220.00 109.6995 36.0565 432087 VVALLEY 220.00 110.1358 36.1999 432003 YERNDAHLLI-1220.00 114.9028 37.7667 432080 SUBRAMNYAPUR220.00 115.6922 38.0262 432188 EPIP-SPLT 220.00 119.4612 39.265 432032 HEBBAL 220.00 120.2104 39.5113 432101 ANCHEPALYA 220.00 126.8873 41.7058 432023 D B PURA 220.00 129.0976 42.4323 432098 HAL 220.00 130.041 42.7424 432192 HOODY_SPLT 220.00 133.0226 43.7224 432126 YELAHANKA 220.00 149.4219 49.1126 432051 KOLAR-KP 220.00 155.9668 51.2638 432137 SMN-SPL 220.00 172.7881 56.7927 432069 PEENYA 220.00 323.5984 106.3617 432097 CHINTHAMANI 220.00 66.3161 21.797 432200 KOTIPURA 220.00 9.1848 3.0189 432194 BEGUR 220.00 12.8581 4.2263 432103 MADUVANAHALI220.00 48.6757 15.9989 432102 CHAMRAJNAGAR220.00 48.9283 16.0819 432085 T K HALLI 220.00 55.8118 18.3445 432129 KUSHALNAGAR 220.00 76.0109 24.9836 432086 TUBINEKERE 220.00 105.4511 34.6601 432004 KADAKOLA 220.00 109.8239 36.0974 432037 HOOTGALLI 220.00 137.2289 45.105

Total Load in Bengaluru area = 3434 MW

Total Load in extended Bengaluru (Bengaluru & Mysore) area = 4038 MW

Total Load in Karnataka state = 9657 MW

Page 4 of 18 Annexure-II D. Details of Generators in Karnataka:

Generator Installed Plant Load Anticipated Capacity Factor Generation Kudgi (3x800) 2400 0.15 360 Talcher St-II 2000 0.75 1300 (4x500) Kaiga St-I (2x220) 440 0.90 400 Kaiga St-II 440 0.90 400 (2x220) Bellary TPS 1700 0.25 425 (1x700 + 2x500) Jindal TPS 1460 0 0 (2x130 + 4x300) Raichur TPS 1720 0.40 680 (1x250 + 7x210) UPCL (2x600) 1200 0.30 360 Yeramarus TPS 1600 0.20 320 (2x800) Nagjheri 885 0.40 350 (1x135 + 5x150) Sharavathy 1035 0.50 520 (10x103.5) Varahi UGPH 460 0.25 115 (4x115) Other Hydel 2137 0.20 430 Total Gas/ 126 0 0 Naphtha/ Diesel Wind 4741 0 0 Solar 3191 0 0 Others 1832 0 0 Total 27367 5660 (5280+22087)

Page 5 of 18 Annexure-II E. Anticipated Load in the Island:

Area Avg. Peak df/dt Load AUFR Load Load Anticipated Load in Relief in Relief in Diversity Load in MW MW MW MW Factor [=dx(a-b-c)] (a) (b) (c) (d) Bengaluru 3434 976 672 1 1786 Extended 4038 1180 928 1 1930 Bengaluru (Bengaluru & Mysore) Karnataka 9657 1476.88 3221.18 1 4959 State

F. Anticipated Generation in the Island:

Area Generators Anticipated considered Generation, MW Bengaluru Talcher (1300), 2180 Sharavathy (520), Kudgi (360) Bengaluru RTPS (680), BTPS 1985 (425), Kudgi (360), Sharavathy (520) Extended Bengaluru Talcher (1300), UPCL 2180 (Bengaluru & (360), Sharavathy Mysore) (520) Extended Bengaluru Kudgi (360), BTPS 2345 (Bengaluru & (425), RTPS (680), Mysore) UPCL (360), Sharavathy (520) Karnataka State Kudgi, Talcher, BTPS, 5660 RTPS, UPCL, Sharavathy, YTPS, Kaiga (I & II), Nagjheri, Varahi & Other Hydel

Page 6 of 18 Annexure-II

G. LGBR in the Island:

Case Area Participating Generators Anticipated Anticipated No. Generation Load, MW (MW) 1 Bengaluru T,K,S 2180 1786 2 Bengaluru R,B,K,S 1985 1786 3 Extended T,U,S 2180 1930 Bengaluru (Bengaluru & Mysore) 4 Extended K,B,R,U,S 2345 1930 Bengaluru (Bengaluru & Mysore) 5 Karnataka K,T,B,R,U,S,Y,N,V,Ka, OH 5660 4959 State

H. Transmission Lines to be tripped for forming the Island:

Case-1: Bengaluru Island [TKS]:

1. From Talcher/ Kolar HVAC:

Talcher St-II Kolar HVAC SS

Trip [Suitable 400 kV lines through which 200 Trip [400 kV NP Kunta S/C line, MW power is being sent to Odisha, 400 kV Tiruvalam-PG S/C line, Interconnecting CB/ Tie-CB between Talcher 400 kV Dharmapuri D/C line, St-I & Talcher St-II] 400 kV Hosur D/C line]

2. From Sharavathy:

Sharavathy HPS Talaguppa SS Hassan-PG SS

Trip [Suitable 220 kV lines] Trip [Suitable 220 kV lines] Trip [400/220 kV ICT’s on 400 kV side, 400 kV UPCL D/C line, 400 kV Mysore-PGD/C line ]

Nelamangala SS

Trip [Suitable 400 kV lines]

Page 7 of 18 Annexure-II

3. From NTPC-Kudgi TPS:

NTPC-Kudgi TPS Kudgi-PG SS Tumkur SS

Trip [Suitable 220 kV lines] Trip [400 kV Kolhapur D/C line Trip [400 kV Kadapa D/C line, 400 kV Narendra-PG D/C line] 400 kV Dharmapuri D/C line, 400/220 kV ICT’s on 400 kV side] ]

4. Trip 400 kV Dharmapuri D/C line and 400 kV Hosur S/C line at Somanahally SS

5. Trip suitable 220/66 kV lines from inside the Island including the following at the periphery of Bengaluru area to form the desired Island:  220 kV Yerandahalli-Split – Hosur-TN S/C line

Case-2: Bengaluru Island [RBKS]:

1. From Raichur TPS:

RTPS Raichur-PG SS Gooty SS

Trip [400 kV Veltoor S/C line, Trip [765/400 kV ICT’s on Trip [all 400 kV lines to AP, 400 kV Munirabad S/C line, 400 kV side] 400/220 ICTs on 400 kV side] Suitable 220 kV lines]

Pavagada SS Tumkur SS

Trip [400 kV BPS D/C line, Trip [400 kV Kadapa D/C line, 400/220 kV ICT’s on 400 kV side] 400 kV Dharmapuri D/C line, 400/220 kV ICT’s on 400 kV side] ]

2. From Bellary TPS:

BTPS Hiriyur SS Nelamangala SS Trip [400 kV JSWEL S/C line Trip [400 kV Guttur D/C line, Trip [suitable elements] Suitable 220 kV lines] 400/220 kV ICT’s on 400 kV side]

3. From NTPC-Kudgi TPS:

Tumkur SS NTPC-Kudgi TPS Kudgi-PG SS

Trip [Suitable 220 kV lines] Trip [400 kV Kolhapur D/C line Trip [400 kV Kadapa D/C line, 400 kV Narendra-PG D/C line] 400 kV Dharmapuri D/C line, 400/220 kV ICT’s on 400 kV side] ]

Page 8 of 18 Annexure-II

4. From Sharavathy:

Sharavathy HPS Talaguppa SS Hassan-PG SS

Trip [Suitable 220 kV lines] Trip [Suitable 220 kV lines] Trip [400/220 kV ICT’s on 400 kV side]

Nelamangala SS

5. Trip 400 kV Dharmapuri D/C line and 400 kV Hosur S/C line at Somanahally SS

6. Trip 400 kV Kozhikode D/C line at Mysore-PG SS.

7. Trip suitable 220/66 kV lines from inside the Island including the following at the periphery of Bengaluru area to form the desired Island:  220 kV Yerandahalli-Split – Hosur-TN S/C line

Case-3: Extended Bengaluru Island [TUS]:

1. From Talcher/ Kolar HVAC:

Talcher St-II Kolar HVAC SS

2. From Sharavathy:

Sharavathy HPS Talaguppa SS Hassan-PG SS

Trip [Suitable 220 kV lines] Trip [Suitable 220 kV lines] Trip [400/220 kV ICT’s on 400 kV side]

Nelamangala SS

Trip [Suitable elements]

Page 9 of 18 Annexure-II 3. From UPCL:

UPCL Hassan-PG SS Nelamangala SS Trip [400/220 kV ICT’s on Trip [400/ 230 kV ICTs on 400 kV side] 400 kV side] Trip [Suitable elements]

4. Trip 400 kV Dharmapuri D/C line and 400 kV Hosur S/C line at Somanahally SS

5. Trip 400 kV Kozhikode D/C line at Mysore-PG SS.

6. Trip suitable 220/66 kV lines from inside the Island including the following at the periphery of extended Bengaluru (Bengaluru & Mysore) area to form the desired Island:  220 kV Yerandahalli-Split – Hosur-TN S/C line  220 kV Kadakola – Kanyampeta S/C line

Case-4: Extended Bengaluru Island [KBRUS]:

1. From Raichur TPS:

RTPS Raichur-PG SS Gooty SS

Trip [400 kV Veltoor S/C line, Trip [765/400 kV ICT’s on Trip [all 400 kV lines to AP, 400 kV Munirabad S/C line, 400 kV side] 400/220 ICTs on 400 kV side] Suitable 220 kV lines]

Pavagada SS Tumkur SS

Trip [400 kV BPS D/C line, Trip [400 kV Kadapa D/C line, 400/220 kV ICT’s on 400 kV side] 400 kV Dharmapuri D/C line, 400/220 kV ICT’s on 400 kV side] ]

2. From Bellary TPS:

BTPS Hiriyur SS Nelamangala SS Trip [400 kV JSWEL S/C line Trip [400 kV Guttur D/C line, Suitable 220 kV lines] 400/220 kV ICT’s on 400 kV side] Trip [Suitable elements]

Page 10 of 18 Annexure-II 3. From NTPC-Kudgi TPS:

NTPC-Kudgi TPS Kudgi-PG SS Tumkur SS

Trip [Suitable 220 kV lines] Trip [400 kV Kolhapur D/C line Trip [400 kV Kadapa D/C line, 400 kV Narendra-PG D/C line] 400 kV Dharmapuri D/C line, 400/220 kV ICT’s on 400 kV side] ]

4. From Sharavathy:

Sharavathy HPS Talaguppa SS Hassan-PG SS

Trip [Suitable 220 kV lines] Trip [Suitable 220 kV lines] Trip [400/220 kV ICT’s on 400 kV side]

Nelamangala SS

Trip [Suitable elements]

5. From UPCL:

UPCL Hassan-PG SS Nelamangala SS Trip [400/ 230 kV ICTs on Trip [400/220 kV ICT’s on 400 kV side] 400 kV side]

6. Trip 400 kV Dharmapuri D/C line and 400 kV Hosur S/C line at Somanahally SS

7. Trip 400 kV Kozhikode D/C line at Mysore-PG SS.

8. Trip suitable 400/220/66 kV lines from inside the Island including the following at the periphery of extended Bengaluru (Bengaluru & Mysore) area to form the desired Island:  220 kV Yerandahalli-Split – Hosur-TN S/C line  220 kV Kadakola – Kanyampeta S/C line

Page 11 of 18 Annexure-II Case-5: Karnataka State Island:

1. Trip suitable 765/400/220/110/66 kV lines and ICT’s from inside the Island including the following at the periphery of Karnataka state to form the desired Island:  400 kV Kudgi=PG – Kolhapur-PG D/C line  765 kV RAichur-PG – Solapur-PG D/C line  220 kV Sedam – Tandur S/C line  400 kV RTPS – Veltoor S/C line  765 kV Raichur-PG – Kurnoll-PG D/C line  400 kV Raichur-PG – Gooty-PG D/C line  400 kV Nelamangala – Gooty-FSCN S/C line  400 kV Somanahalli – Gooty-FSCS S/C line  400 kV Pavagada – Gooty-PG D/C line  220 kV Alipur - Regulapadu S/C line  400 kV Tumkur-PG – Kadapa-PG D/C line  400 kV Tumkur-PG – Dharmapuri D/C line  400 kV Kolar-PG – NP Kunta S/C line  400 kV Kolar-PG – Tiruvalam-PG S/C line  400 kV Kolar-PG – Hosur D/C line  220 kV Yerandahalli-Split – Hosur-TN S/C line  400 kV Somanahally – Dharmapuri D/C line  220 kV Kadakola – Kanyampeta S/C line  400 kV Mysore-PG – Kozhikode D/C line

*****

Page 12 of 18 Annexure-II

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KUDGI-NTPC % % 402.0

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1 1 1 5 S % 1 6 1 6 1 6 1 6 2

------4 S 2 5 S %

S % 0 T1 T2 T3 432071 1.0 1 RAICHUR TPS 220.0 4 1 3 Q Q Q 2

I I I

0 0 9 0 0 0 0 0 0

R R R

. % . . . % . % . . . .

2 2 2

0 6 1 4 0 6 0 6 7 2 7 2

. . .

- -

1 8 1 3 1 8 1 8 2 2

0 0 0

- - - -

4 4 2 2 2

3 3 3

3 . 3 .

- - -

. . 1 1 7 9 7 9 7 9 7 9 1 1 1 9 9 ...... 434023 1 1 1.0 7 7 3 7 3 7 3 7 3 7

1 1

2 - 2 - 1 5 1 5 1 5 1 5

KUDGI-PG 402.4 3 2 1 T1 T3 T2 B1 B2 1 1 1

8 0 8 0

. . . .

4 5 4 5 1 3 2 2

SW -1.8 -1.8 . . . . I I

0 2 0 2 0 0

434006 1.0

- - -94.1 -94.1 1 5 . 2 . 2

3 3 229.4 %

- - 1 3 7 2 7 2

7 RAICHUR TPS % % 403.6

7 7

I I

A A A

/ / /

% %

N N N

3 8 6.6 SW

9 8 58.2 -50.1 -11.6 -32.4 -21.6 106.1 210.0 197.4 160.0 160.0 -92.0L -92.0L -128.1 -128.1 T6 T7T8 T4 T5 3 0%

3 S T1 0% S 7% S

5 424001 1.0 1 2 % S -6.5 37.1 Q Q Q VELTOOR 407.0 5% 1 434025 S 1.0 T1 Q YERMARUS TPS 400.0 2 0.0

I I

117.4

S 0 8 0 8 0 0

R R 432119 1.0 % . . . . . % . % 1 8 8

2 0 1 0 1 0 5 0 5

. .

0 2 0 2 0 8 0 8

1 1

NARENDRA-PG 216.8S S - -

8 8 8 8

2 2

- -

% % 1

6 6 434009 1.0

4 4 RAICHUR-PG -159.9 112.6 -159.9 112.6 405.1 S 434016 1.0

0 3 0 3 T2 T1

. . . .

-105.7 -13.6 %

6 7 6 7 MUNIRABAD 398.6 8 S 3 6 3 6 1 - - - - 1 1 1 I I % 8 6 2 6 2 7 1 3 7

1 ...... 1 2 % %

1 1 1 1 1 0 1 2 1

2 2

2 4 2 4 8 7 8 7

1 1 8 4 4 2 4 2 1 1 ------

3 3 1 1 1 ...... 1 1

3 3

. . .

2 1

0 8 0 8 . .

6 1 4 4 4 4 I I

. . . . 6 6 4 SW 4 6 4 6 1

9 9

3 7 3 1 3 1 56.7 434017 W 1.0 . . . . 1

6 8 6 8 0 0 1

7 7 4 3 4 3 1 3 6 % 3 6 % 3 - 3 - S 1 432060 1.0 2

1 NARENDRA 401.3 3 1 1 3 1 1 5 5 Q - - - -

1 1 MUNIRABAD-PG 217.9 1 2 1 Q

1 3 2 3 2

. . . . 6 4 6 4 4 I

. . . .

I 2 6 2 6 8 8 % 0 0 4 3 4 3 437001 1.0

1 1 1 1

. .

...... 7 7 7 7

T1 %

- - - - 2 4 2 4 2 2 1 S 6 6 6 9 6 9 RAICHUR-PG % 777.4 4 3

1 1

2 2 1 5 1 5 % 3 - - - -

3 3 - - S S % 6 2 1 9 %

8 8 1 3 2 7 0 0

...... 2 S

7 7 1 2 0 3 0 0 9 4 4 5 1 5 1 % 1 1 4 . . 2 2 2 2 . - - S 1 6 1 6

6 . .

9 9

434027 W 1.0

2 4 4

7 7 BPS S 2 - 6 - 6 399.7 1 2 10% S 1 1 2 T 10% % 7 8 7 8 6 0 6 0 8 1 8 1 S

1 ...... 2 S 1 2 1 2 1 8 1 8 7 7 7 7 % 9 3 9 3 0 1 0 1 9 2 9 2

- - - - 2 2 1 1 3 1 3 1 S - - 432171 1.0 1 S S B 1 1 DONI220 219.5 T2 T1 % Q B2 3 % 1 A 4 S 7 1 2 % 1 Q A 3 5 5 2

. . 4

N1 N2 432042 7 0 1.0 1 0 1 0 A A 0 0

. . . . 3 / /

1 1 2 1 8 8 8 8 JINDAL 216.6 Q N N 3 7

417001 1 7 2 1 2 1 2 . .

. . . - - - -

4 0 9

1 5 0 0 1 2 KURNOOL-PG 1.0

0 0 7 . 4

I I Q 5 7 5 . .

R R - - - 1 0 2

0 0 S KRNL7_PG_765 780.3 432107 8 8 1.0

1 . % 1 . %

1 3 1 3 . 3 2 8 1 2 8 1 % 3 7 3 7 KAIGA 220.0 . . . . . I I 6 . . . . 8 8 1 1 4 S T 434028 1 1 1.0 8 8 8 8 9 3 9 6 9 6 6 2 6 6 1 2 1 2 - 1

7 7 . . T 3 2 3 2 % DONI % % 402.0 . 2 . 1 - -

0 0 1 3 1 3 1 1 1 4 7 7 9 . 9 . . . - -

9 9 434014 I I 1.0 6 3 5 3 5 7 7 1 1 2 2

1 3 1 3 - 2 - 2 JINDAL TPS 399.8 6 % % 7 2 7 2 1 . . . . 6 6 % 0 5 0 5

4 4

1 2 1 1 2 1 5 9 6 - - . . S 3 3 1 0 5 % 2 1

A A A A

/ / / / 4 4 - . . 2 2 S

3 3 1 1 . . N N N N

9 0 9 0 . .

. I . I 8 8

1 1 0 0 434015 1.0 1 1 2 2 88.2 -41 3 3 5 5 .7 -88

-82.8 .1

- 4 - 4 3 - 3 - 215.7 KAIGA APS % % 401.2 19% S 434011 1.0 4 4 37.4 6 6 BELLARY TPS 50.2 -74.8 400.0 S T2T3 T4 T1 T1 % 1 I I 5 1

5 0 L 0 L 2 4 1 4

% %

......

0 0

A I A

4 4

7 0 . 0 . 1 3 1 3

S / /

3 9

S % %

8 8 1 1 . . 5 1 4 1 4 0 7 0 7 5

3 5

4 N . . N - - 9

% 0 . 1 .

2 5 2 5 2 2

3 0

- - 3 H 7 SW 414001 8 9 8 9 1.0

2 1 57.1

8 1 1 1 1

2 -91.2 -91.2 307.4 307.4 1 1 700.0 GOOTY - - - - 406.3

H -152.6R 4 1 1 N3 N4 1% T T1 T2 S 1

S 41 % 2 1

T3 % 8 S 1 4 4 4 4 0 8 0 1 4 . T Q Q ...... 1 6 W

4 2 4 2 4 2 6 9 3

7 0

2 . 432018 1.0 3 5 3 5 8 9 7 2 5

Q - - - - 1 4 T 2 2 3 1 3 2 - - 2 BALLERY TPS 218.8

1 S Q 1 T1 T 2% 1

6 0

S 4 6

. 2% 414032 8 1.0

6 0 432092 1.0 A 3

- 6 0 9 GTYNLM-FSC 399.9 . . TALAGUPPA 219.1 N 3 3

0 9 4 . 4 . 1 1

3 3 5

. . . 434012 0 . 9 . 9 9 . 1.0 6 6 1 T 2 4 1 4 2 2 0 1 GUTTUR - - - - 1 - 1 - - 6 -214.4 18.1 403.5 6 N S 6 % % /A 9 9 9 9 9 9 3 1

...... 4 . I I S

S 9 4 9 4 9 4 9 7

7 1 7 1 7 1 % -60.6 414033 2 1.0 384.0 - - - % % 3 7 1 1 1 1 1 1 2 4 3 5 3 5 3 5 5 T S S - 8 . . . . GTYSMN-FSC 398.0

2 2

2 0 2 0

1 2 3 % % 6 5 6 5 1 1 1 W1 -56.3 -56.3 7 T 7 228.5 228.5

1 2 1 2 1 2 1 1

2 1 . . .

9 9 9 9 9 9 I I I

. . .

434018 7 7 7 1.0 4 7 7 7 1 1 1 1 1 6 % % % SW 57.2 - 2 - 2 - 2 4 8 4 8 % I TALAGUPPA 400.3 . . . . H 8 8 8 S 2 7 2 7 1 0 5 5 5 432027 1.0 4 . . -87.7 6 4 6 4 % 6 329.1 - - - - 8 0 % GUTTUR 0 217.3 S 1 T1 T2 T2 -90.1 -50.9 238.0 299.7 T1

432145 1.0 5 5

6 . .

0 0

. 1 . 1 . PAVAGADA 223.8

0 9 0 9

434029 W 1.0

1 5 1 5 434019 1.0 JAGALUR S 1 - - - - 397.9 SW 0.0 -227.9 8.3 -227.9 8.3 -304.6 34.9 -304.6 34.9 HIRIYUR 404.7 I I

254023 1.0 1 3 1 3

. .

0 3 0 3 0 3 0 3 0 3

1 4 % 1 4 %

...... TALCHER HVDC 400.0

. .

0 1 0 1

432185 1.0 0 2 0 2 0 2 0 2 0 2

I I 5 5

- - - - - 1 2 1 2

1 2 - 1 - 1 5 5 8 5 8 JAGALUR . . . . 219.3

9 % %

1 2 1 2 % 8 7 8 7 7 7 1 1 1

. . . . 0 1 0 1 1 1

2 2 - -

2 8 2 8 S 1 1 1 1 5 3 1

8 2 8 2 21.7

4 2 -14.9 -14.9 -59.0 -55.1 295.6 295.6 286.6 S 1 1 1 0.0 1 1 1 1 5% 2 1 12% S 7

2 2 4 4 -1000.0

. . . .

5 0 5 0 3 3

3 3 3 3 3 8 8 1 1 . .

9 9 0 . 0 . 0 . 0 . 0 . 3 . 3 . T1 434026 A A A A 1.0

1 1 . . . . . / A / / /

7 7 7 7 3 3 2 2 2 2 2 2 1 2 1

. . . . -21.7 -7.6 - 4 - 4 0 - 0 - 0 - 0 - 0 - - - - - PAVAGADA N N N N 406.6 432033 2 5 2 5 1.0 N

8 2 8 2 HIRIYUR-PG - - - - 219.8 1

4 9 %

% 3

6 1 6 1

T S . . 6 . . 1 6

9 1 9 2

1 SW

0 0 1 0 4

9 7 -84.1 -33.1 -33.1 -

. Q 181.9 234.3 238.8 238.8 3 1 3 434030 0 1.0 -

- 9

PVG-FSC1 402.81 /

. 5 9 5 9 7

. S 4 9

4 0

5 434031 1.0

0 0 4 A . 3 3

7 / 0 - 9 1 . 414052 1.0 % % 7 % PVG-FSC2 402.8

N 1 5 S 2 8 7

-90.7 . CUDDAPA GIS 410.1 7 8

309.6 6 3 . S S % 3 % 1 1 432030 1.0 3

S 4 S S 8

HASAN-PG 218.5 . % 4 .8 6 0 4 % . 4 6 0 4 2 2 2 2

0 . . . . 7 9 . 1 2 0 9 7 4 7 4 4 -90.7 1

309.6 4 2

1 2 1 2

4 -13.0 -13.0 - - 1 1 238.2 238.2

T 2 8 2 8

. . . .

3 S

9 7 9 7

0 3 0 3 2 1 % - -

1 1 5 5 7 - - 1 . . 1 2 2 T 4 T4 9 . 9 .

Q 434013 I I 1.0 2 0 3 0 3 1 Q -297.2 -10.7 1 1 4 1 1 4 HASSAN % % 404.5 Q

7 7

3 3

2 6 2 6 2 S

. . . . T 1 Q 7 8 7 8 414037 S 1.0

1 2 1 2

- - - - 8 2 8 2 NP KUNTA 5 410.0 . . . . %

5 1 5 1 0.0 5 SW -4.9 -4.9 Q2

7 1 7 1 28.4

- - -43.5

1 1 200.8 200.8

T - -

1 Q1 T 1 2 S L 36% P 2 0.4

K L SW T P 119.1 6% S K 327.0 3 T

434008 1.0

SW 58.7 -237.8 -20.6 1.8 -70.7 1.8 -70.7 -237.8 -20.6 -308.2 -4.6 -308.2 -4.6 TUMKUR -237.0 -50.7 -237.0 -50.7 405.3

I I I

% % %

1 6 1 6 1 6

7 7 7

......

1 1 1 1 8 3 1 8 3 1 8 3 40.9 40.9 63.5 63.5 7 3 7 3 7 3 4

-34.9 -40.5 . 274.6 274.6 200.5 200.5 198.1 179.6 2 3 9 .3 .4 1 2 3 - 2 2 5 3 3 4 9 . - 2 0 9 0 9 0 9 5 S 1 . . 1 . . 1 . . 5 4 432178 8 1 8 1 8 1 1.0 2

% 7 3 7 3 7 3 8 9 TUMKUR-PG ------220.9 .0 5 T 3 1 0 2 1 .0 8 8 .0 1 1 0 .0 8 1 T1 2 Q 1 T 1 432193 1.0 Q NLM_SPLIT 210.2432066 1.0 NELAMNGALA 213.4 1 3% N/A 432050 1.0 S 4 9 4 9 KOLAR-PG 218.0 . . . . D1 S 6 6 6 6

. % . 3 2 3 2 3

2 1 1 6 6 3 1 3 1

- - - -

3 1 8

1 2

7 4 7 4 S 3 . . . . 2 1 2 1

% 1 6 1 6 1 - 1 - 1 2 2 3 S 1 1 - - % 1 2 1 1 3 1 3 2 9

I I 1 ...... I

3 3 3 8 2 8 2 3 2 1 1

. .

434004 1.0 9 9 3 6 3 6 3 0 % % I I

% 3 . 3 .

-28.4 -59.0 -235.9 -27.5 -292.8 -49.6 -292.8 -4.6 3 1 3 1 2 1 SW -0.0 -377.0 42.5 5 5 434010 1.0 NELAMANGALA 1 398.7 1 3 1 3 0 0 0 0

7 7

5 . . . . 2 7 2 7 -324.4 -47.6 KOLAR % % 404.3

0 0 0 0 5 5

- - - - 1 1 4 4 I1 2 1

Q Q 1 2 I2 -6.7 1.0 432205 81.7 81.7 98.0 98.0 4.9 -72.2 -72.2 -70.1 -70.1 -35.4 -15.4 -29.4 SW

R 219.6 DEVANAHALLI -45.9 -53.7 -42.3 -42.3 226.5 390.4 126.7 390.4 126.7 400.6 400.6 1 I 4 4 6% S 1 1 6 . 4 . 4 .

. . . -1124.6

9 1 1

7 6 6

0 0 0 0 434021 4 1 1 1.0 434032 1.0 . . . .

0 A 7 7

1 1 1 T1 / SW 0.0 6.7 -1.3 0 0 A 0 0 A

5 - 1 - 1 -

7 UDUPI PCL 400.0 DEVANAHALLI / / 399.3 N

N N

I I

1 4% % % 4 8 4 8

7 7 S . . . .

2 2

7 6 7 6 7.4 1 S -3.1 -3.1

10.1 10.1 7 3 7 3

1 1 T S % -27.0 3 % 4 3 4

2 1 T1

1 3 9 1 3 9 S . . . . % T 432091 7 3 7 3 1.0 44 1

7 3 7 3

- - - - UDIPI PH 216.5 7

1 7 7 T % % 8

% 1 S T S

S S S S

4 1 % . . 1 2 % % 7 B 6 2

1 1 Q

2 2 434022 2 1.0 T B1 Q 2 27.0 -25.3 35.4 -1.0 -199.9 -99.3 -199.9 -99.3 T S YELAHANKA 399.0 1

1 % 3 S I I 2

% % 3

6 6

6 6 6 6 444024 1.0 2 . . . . S 3 3 SW 58.9 45.9 -32.9 T 8 5 8 5 % 1 1 SW 0 TIRUVALAM-PG 406.1 2 6 5 6 5 6 2 1 3 1 1 113.7 1 S 3 T 2 2 % T . . % % 7 7 0 1 8 . 8 . 6 1 1 S

6 7 6 7 432172 1.0 S

1 4 1 4 YELAHANKA_PG - - - - 216.1

T T

2 1

434003 1.0 V4 HOODY -10.1 -8.0 -10.1 -8.0 -389.7 -151.6 -389.7 -151.6 399.3

T2 T1 I

6 0

. .

9 0 %

1 2 3 0 3 0

2 432192 0 . 1 1.0. . . 2 . .

5 1 3 1 1 9 4 0 5 4 0 - - HOODY_SPLT 1 211.73 1 4 9 1 4 9 3 21 2 2 S 432190 1.0

3 % 1 SMNH_SPT 215.7 A

3 / 4 S N

0 7

5 5

. . % . . 0 1 0 3 3 3 1 3 . 3 . 4 3 4 432036 4 3 4 3 1.0

2 7 2 7

- - - - 9 0 HOODY 214.4 2 . . D1 T 1 0 8 8 6

1 V2 V3 1

T 1

N V1 4

1 . 7

1 . I A

434005 1.0

8 7 -225.6 -3.8 SW 57.3 1 7 -323.0 47.0 SOMANAHALLI % 400.5

1 I I Q D

2 1

5 1 5 1 % %

. . . .

8 8

2 4 2 4

4 4 24.2 24.2 2 8 2 8 66.6 -84.1

2 2 150.1 150.1 -155.4 -155.4 -222.3 -222.3 1 1 21% S

4 2 3

8 8 T1 0 1 . 1 . S

0 0

% 1 . 1 .

432078 2 0 2 0 1.0 444006 1.0 2 7 2 7 S 1 T - - - - -66.5 40.7 SW 58.3 SOMANAHALLI 215.3 HOSUR -398.5 25.8 -398.5 25.8 404.2 2 S T % 3 4 S % 3 4 434007 1.0 -274.0 -98.1 -274.0 -98.1 222.5 -31.9 222.5 -31.9 -81.6 53.8 -81.6 53.8 BIDADI SW 57.2 400.3

I I

% %

1 6 1 6

8 8

. . . .

2 2

3 7 3 7

3 4 3 4

1 1 3 1 1 2% 2 1 3 S 2%

9 1 9 1 . . S

6 6

2 . 2 .

432128 3 2 3 2 1.0

1 4 1 4 BIDADI-PG - - - - 217.3

3 3 1 4 % %

S 434020 1.0 S -180.1 -16.4 -97.8 -0.7 -97.8 -0.7 -200.0 -41.8 -200.0 -41.8 -283.6 33.8 Q MYSORE 401.6 2 Q 1

I I

7 7 7 7 2 5 2 5 5 1

......

% %

1 2 1 2 0.0 1 0 1 0 3 2

SW 6

2 5 2 5 7 5 7 5 7 7

5 5

- -

2 2 1 1 2

1 1 13

2 1 1 1 1

6 6 9

. . .

0 0 2

0 . 0 . 1 . S 432061 7 8 7 8 7 2 1.0 1 3 1 3 2 5 % MYSRE-PG ------216.3 44 S % 44

1 T T2

444026 1.0 -149.7 71.1 -149.7 71.1 DHARAMAPURI -197.5 -38.7 -179.0 -49.8 408.5

9 9

. .

9 9

454008 1 6 1 6 1.0 . .

2 2 KOZHIKODE - 5 - 5 399.3

Page 13 of 18 1 Annexure-II

CASE-1: BENGALURU ISLAND

KOLHAPUR-400

|| KUDGI-PG-765/400

|||| || KUDGI-NTPC-400 RCHR-TPS-400/220 NARENDRA-PG-400

|| MUNIRABAD-400 || VELTOOR-400

|| RCHR-PG-765/400 ||

KURNOOL-PG-400 NARNOOR-400

GTYN-FSC-400 ||

GOOTY-PG-400/220 JSWEL-400 BTPS-400/220 GTYS-FSC-400 ||

NELLORE-PS-400

|| || TALCHER-HVDC

||| SHARVATI-220 ||| TALAGUPA-400/220 ||

GUTTUR-400 || || BPS-400 || || PAVGDA-400/220

HIRIYUR-PG-400/220 PAVGDA-FSC1-400 ||

|| PAVGDA-FSC2-400 KADAPA-400 ||

|| TUMKUR-PG-400/220 DHARMAPURI-400 HOSKOT-220 NP KUNTA-400

KBCROSS-220/110 || || KOLAR-PG-400/220

HASSAN-PG-400/220 || HW-PARK-220

KADUR-220 DBPURA-220/66 || DEVNHALLI-400/220 ||

|| TIRUVALAM-PG-400 ||

BEGUR-BIAL-220 CHINTMANI-220

NLMNGLA-400/220 || ||

|| DOBASPET-220

YLHNKA-220 || KOLAR-KP-220/66 YLHNKA-PG-400/220 || NITTUR-220/110 NLM-SPLT-220 || || DHARMAPURI-400 MANYTA-220 BGPET-220 MAGADI-220 CPRI-220 HEBBAL-220 YLHNKA-PG-400/220MALUR-220 BRINDVAN-220 || HOSUR-400 || HOODY-400/220 NRS-220 || ITI-220 ANCHPALYA-220 PEENYA-220 VT-PARK-220 A-STATION-220 || VVALLEY-220 ||

|| HAL-220 LEGEND DESCRIPTION

NIMHNS-220 || SARJAPUR-220 SUBRMNPUR-220 TATAGUNI-220 ITPL-220 KORMNGLA-220

|| 765 kV EDC-220 EPIP-SPLT-220 NAGNTHPURA-220 EPIP-220

KHODAYS-220 400 kV

|| || SMNHLLY-400/220 HSR-220 UPCL-400/220 ||

BIDADI-PG-400/220 YERNDHLI1-220 230/220 kV || || SMNHLLY-SPL-220

|| JIGANI-220 YRNDHLI-SPLT-220 HOSUR-TN-230 || 132/110 kV BIDADI-220 DHARMAPURI-400 HAROHALLI-220 66 kV KOTIPURA-220

|| KANKPURA-220 33/11/6.6 kV TUBNKERE-220 MYSORE-PG-400/220 HVDC SIMSHA-220 THERMAL POWER STATION

KUSHALNGR-220 || SIVSMDRM-220

VAJMNGLA-220 || TKHALLI-220 ||

|| HYDRO POWER STATION

|| ||

HOOTGLY-220 HEBBANI-220 NUCLEAR POWER STATION || KADAKOLA-220 KOZHIKODE-400 ||

MADUVANHLY-220 || BEGUR-220 || KANYMPETA-220 CHMRJNAGAR-220

[NOT TO SCALE]

Page 14 of 18 Annexure-II

CASE-2: BENGALURU ISLAND

KOLHAPUR-400

|| KUDGI-PG-765/400

|||| || KUDGI-NTPC-400 RCHR-TPS-400/220 NARENDRA-PG-400

|| MUNIRABAD-400 || VELTOOR-400

|| RCHR-PG-765/400 ||

KURNOOL-PG-400 NARNOOR-400

GTYN-FSC-400 ||

GOOTY-PG-400/220 JSWEL-400 BTPS-400/220 GTYS-FSC-400 ||

NELLORE-PS-400

|| || TALCHER-HVDC

||| SHARVATI-220 ||| TALAGUPA-400/220 ||

GUTTUR-400 || || BPS-400 || || PAVGDA-400/220

HIRIYUR-PG-400/220 PAVGDA-FSC1-400 ||

|| PAVGDA-FSC2-400 KADAPA-400 ||

|| TUMKUR-PG-400/220 DHARMAPURI-400 HOSKOT-220 NP KUNTA-400

KBCROSS-220/110 || || KOLAR-PG-400/220

HASSAN-PG-400/220 || HW-PARK-220

KADUR-220 DBPURA-220/66 || DEVNHALLI-400/220 ||

|| TIRUVALAM-PG-400 ||

BEGUR-BIAL-220 CHINTMANI-220

NLMNGLA-400/220 || ||

|| DOBASPET-220

|| HAL-220 LEGEND DESCRIPTION

NIMHNS-220 || SARJAPUR-220 SUBRMNPUR-220 TATAGUNI-220 ITPL-220 KORMNGLA-220

|| 765 kV EDC-220 EPIP-SPLT-220 NAGNTHPURA-220 EPIP-220

KHODAYS-220 400 kV

|| || SMNHLLY-400/220 HSR-220 UPCL-400/220 ||

BIDADI-PG-400/220 YERNDHLI1-220 230/220 kV || || SMNHLLY-SPL-220

|| JIGANI-220 YRNDHLI-SPLT-220 HOSUR-TN-230 || 132/110 kV BIDADI-220 DHARMAPURI-400 HAROHALLI-220 66 kV KOTIPURA-220

|| KANKPURA-220 33/11/6.6 kV TUBNKERE-220 MYSORE-PG-400/220 HVDC SIMSHA-220

THERMAL POWER STATION || SIVSMDRM-220 KUSHALNGR-220

VAJMNGLA-220 || TKHALLI-220 ||

|| HYDRO POWER STATION

|| ||

HOOTGLY-220 HEBBANI-220 NUCLEAR POWER STATION || KADAKOLA-220 KOZHIKODE-400 ||

MADUVANHLY-220 || BEGUR-220 || KANYMPETA-220 CHMRJNAGAR-220

[NOT TO SCALE]

Page 15 of 18 Annexure-II

CASE-3: EXTENDED BENGALURU ISLAND

KOLHAPUR-400

|| KUDGI-PG-765/400

|||| || KUDGI-NTPC-400 RCHR-TPS-400/220 NARENDRA-PG-400

|| MUNIRABAD-400 || VELTOOR-400

|| RCHR-PG-765/400 ||

KURNOOL-PG-400 NARNOOR-400

GTYN-FSC-400 ||

GOOTY-PG-400/220 JSWEL-400 BTPS-400/220 GTYS-FSC-400 ||

NELLORE-PS-400

|| || TALCHER-HVDC

||| SHARVATI-220 ||| TALAGUPA-400/220 ||

GUTTUR-400 || || BPS-400 || || PAVGDA-400/220

HIRIYUR-PG-400/220 PAVGDA-FSC1-400 ||

|| PAVGDA-FSC2-400 KADAPA-400 ||

|| TUMKUR-PG-400/220 DHARMAPURI-400 HOSKOT-220 NP KUNTA-400

KBCROSS-220/110 || || KOLAR-PG-400/220

HASSAN-PG-400/220 || HW-PARK-220

KADUR-220 DBPURA-220/66 || DEVNHALLI-400/220 ||

|| TIRUVALAM-PG-400 ||

BEGUR-BIAL-220 CHINTMANI-220

NLMNGLA-400/220 || ||

|| DOBASPET-220

|| HAL-220 LEGEND DESCRIPTION

NIMHNS-220 || SARJAPUR-220 SUBRMNPUR-220 TATAGUNI-220 ITPL-220 KORMNGLA-220

|| 765 kV EDC-220 EPIP-SPLT-220 NAGNTHPURA-220 EPIP-220

KHODAYS-220 400 kV

|| || SMNHLLY-400/220 HSR-220 UPCL-400/220 ||

BIDADI-PG-400/220 YERNDHLI1-220 230/220 kV || || SMNHLLY-SPL-220

|| JIGANI-220 YRNDHLI-SPLT-220 HOSUR-TN-230 || 132/110 kV BIDADI-220 DHARMAPURI-400 HAROHALLI-220 66 kV KOTIPURA-220

|| KANKPURA-220 33/11/6.6 kV TUBNKERE-220 MYSORE-PG-400/220 HVDC SIMSHA-220

THERMAL POWER STATION || SIVSMDRM-220 KUSHALNGR-220

VAJMNGLA-220 || TKHALLI-220 ||

|| HYDRO POWER STATION

|| ||

HOOTGLY-220 HEBBANI-220 NUCLEAR POWER STATION || KADAKOLA-220 KOZHIKODE-400 ||

MADUVANHLY-220 || BEGUR-220 || KANYMPETA-220 CHMRJNAGAR-220

[NOT TO SCALE]

Page 16 of 18 Annexure-II

CASE-4: EXTENDED BENGALURU ISLAND

KOLHAPUR-400

|| KUDGI-PG-765/400

|||| || KUDGI-NTPC-400 RCHR-TPS-400/220 NARENDRA-PG-400

|| MUNIRABAD-400 || VELTOOR-400

|| RCHR-PG-765/400 ||

KURNOOL-PG-400 NARNOOR-400

GTYN-FSC-400 ||

GOOTY-PG-400/220 JSWEL-400 BTPS-400/220 GTYS-FSC-400 ||

NELLORE-PS-400

|| || TALCHER-HVDC

||| SHARVATI-220 ||| TALAGUPA-400/220 ||

GUTTUR-400 || || BPS-400 || || PAVGDA-400/220

HIRIYUR-PG-400/220 PAVGDA-FSC1-400 ||

|| PAVGDA-FSC2-400 KADAPA-400 ||

|| TUMKUR-PG-400/220 DHARMAPURI-400 HOSKOT-220 NP KUNTA-400

KBCROSS-220/110 || || KOLAR-PG-400/220 HASSAN-PG-400/220 || HW-PARK-220

KADUR-220 DBPURA-220/66 DEVNHALLI-400/220 ||

|| TIRUVALAM-PG-400 ||

BEGUR-BIAL-220 CHINTMANI-220

NLMNGLA-400/220 || ||

|| DOBASPET-220

|| HAL-220 LEGEND DESCRIPTION

NIMHNS-220 || SARJAPUR-220 SUBRMNPUR-220 TATAGUNI-220 ITPL-220 KORMNGLA-220

|| 765 kV EDC-220 EPIP-SPLT-220 NAGNTHPURA-220 EPIP-220

KHODAYS-220 400 kV

|| || SMNHLLY-400/220 HSR-220 UPCL-400/220 ||

BIDADI-PG-400/220 YERNDHLI1-220 230/220 kV || || SMNHLLY-SPL-220

|| JIGANI-220 YRNDHLI-SPLT-220 HOSUR-TN-230 || 132/110 kV BIDADI-220 DHARMAPURI-400 HAROHALLI-220 66 kV KOTIPURA-220

|| KANKPURA-220 33/11/6.6 kV TUBNKERE-220 MYSORE-PG-400/220 HVDC SIMSHA-220

THERMAL POWER STATION || SIVSMDRM-220 KUSHALNGR-220

VAJMNGLA-220 || TKHALLI-220 ||

|| HYDRO POWER STATION

|| ||

HOOTGLY-220 HEBBANI-220 NUCLEAR POWER STATION || KADAKOLA-220 KOZHIKODE-400 ||

MADUVANHLY-220 || BEGUR-220 || KANYMPETA-220 CHMRJNAGAR-220

[NOT TO SCALE]

Page 17 of 18 Annexure-II

CASE-5: KARNATAKA STATE ISLAND

SOLAPUR-765 HUMNABAD-220/110 ||

LEGEND DESCRIPTION HALBARGA-220/110 ||

TANDUR-220/132

|| 765 kV ||

GULBARGA-220/110 400 kV KOLHAPUR-765/400 SEDAM-220/110 || 230/220 kV SHAHABAD-220/110 UPR-JRL-220

NTMPD2-220 ||

132/110 kV || || BIJAPUR-220/110 JURLA-SS-220

MUDSHNGI-220/110 INDI-220/110 || NTMPD-220

|| ||| VELTOOR-400/220 66 kV

CHIKKODI-220/110 || GMNAVR-220 || SHAHAPUR-220/110 33/11/6.6 kV

KUDACHI-220/110 TALNDAGE-220/110 || |||| BELUTTI-220

KUDGI-PG-765/400 || || Tripped Elements

|||| BBAEWADI-220/110 || || ATHANI-220/110 || KUDGI-NTPC-400 HVDC || ||

MAHLNGPUR-220/110 || THERMAL POWER STATION

|| RCHR-TPS-400/220 ||

|| ALMATTI-220 MALLAT-220 VAJRMTTI-220/110 || || || HYDRO POWER STATION || BAGALKOT-220/110 || || LINGSUGUR-220/110 || RAICHUR-220/110 INDAL-220 || NUCLEAR POWER STATION ||

|| || YTPS-400

|| BELGAUM-220/110 || KUSTAGI-220/110 KURNOOL-PG-765/400

|| RCHR-PG-765/400

|| || || ||

KANABRGI-220 SINDANUR-220/110 GTPRBA-220/110 || KALYANI-220

MKHUBLI-220/110

|| ||

|| MUNRBAD-PG-400/220 SOUNDATTI-220/110

|| NRNDRA-PG-400/220 ||

NRNDRA-KP-220/110 GADAG-220/110 || PONDA-220 || ||

HARTI-220 GTYN-FSC-400

|| || LINGAPUR-220

|| || ||

AMBEWADI-220/110 || ||

XELDAM-220 || HARTI-W-220 || BPS-400

|| DONI-400/220 || GOOTY-PG-400/220 || || ALIPUR-220/110

|| BIDNAL-220/110 MUNRD-KP-220/110 ||

|| GTYS-FSC-400

|| REGLPADU-220 ||| BMMISPAT-220

|| BTPS-400/220

NAGJHERI-PH-220 || || HUBLI-220/110 HLVARTY-220 JINDAL-400/220 SUZLON-W-220 GOOTY-AP-220/132

KADRA-220 HAVERI-220/110 ||

|| ||

KODSALLI-220|| || ITAGI-220 ||

SIRSI-220/110 RNBNRU-220/110 ||

NEELGUNDA-220 || ||

KARWAR-220/110 KAIGA-400/220 || TALCHER-HVDC ||

SHRLKOPA-220/110 GUTTUR-400/220 KUDLIGI-220 CHNKMPLY-400/220/132 ||

KUDRKONDA-220 || ||| ||| ||

SHARVATI-220 ||| ||

TALAGUPA-400/220 CHITRDURGA-220 JAGALUR-400/220 || ||

|| CUDPA-PG-765/400

|| || ||| HONNHALLI-220 DAVNGERE-220 ||

TALLAK-220 NPKUNTA PS-400/220

||| PAVGDA-400/220 RYCHALU-1-2-220 || || SHIMOGA-220/110 || SHRVTI-TLRC-220 TIRUMANI-1-2-220 NPKUNTA PS-1-2-4-220/132 PAVGDA-FSC1-400 || ||

HIRIYUR-PG-400/220 HIRYR-KP-220 PAVGDA-KP-220

|| GALIVEEDU-1-3-220/132 ||

|| || || PAVGDA-FSC2-400 GALIVEEDU-2-220/132 ARASIKERE-220 MADUGIRI-220 KSPDCL-1-2-3-4-220 HYR-W-220 VASNTNRPURA-220

CHKMNGLUR-220 ||

||| || || MITTEMARI-220

HASAN-KP-220 TUMKUR-PG-400/220 HOSKOT-220

KBCROSS-220/110 || GOWRBDNUR-220

|| ||| KIABPURA-220 KOLAR-PG-400/220

HASSAN-PG-400/220 || HW-PARK-220 ANTRSNHALLI-220 ||

KADUR-220 DBPURA-220/66 DEVNHALLI-400/220 ||

|| ||

CRPATNA-220 NLMNGLA-400/220 BEGUR-BIAL-220 || CHINTMANI-220

|| DOBASPET-220 || KOLAR-KP-220/66 VARAHI-220 YLHNKA-220 YLHNKA-PG-400/220 || NITTUR-220/110 NLM-SPLT-220 || || MANYTA-220 ||| GOPLPUR-220 BGPET-220 MAGADI-220 CPRI-220 HEBBAL-220 YLHNKA-PG-400/220MALUR-220

BRINDVAN-220 || GOPLPR-W-220 || || HOODY-400/220 NRS-220 || ITI-220 HNPURA-220 PEENYA-220 VT-PARK-220 TIRUVLM-PG-765/400 ANCHPALYA-220 A-STATION-220

|| || || VVALLEY-220

|| HAL-220 ||| || KRPET-220 NIMHNS-220 SARJAPUR-220

SUBRMNPUR-220 TATAGUNI-220 ITPL-220 TIRUVLM-TN-400/230 KORMNGLA-220 || || EDC-220 EPIP-SPLT-220 NAGNTHPURA-220 EPIP-220

KHODAYS-220 HOSUR-400/230 TIRUVLM-230/110

|| ||

KEMAR-220/110 || SMNHLLY-400/220 HSR-220 UPCL-400/220 || ||

BIDADI-PG-400/220 YERNDHLI1-220 || HOSUR-TN-230/110

|| SMNHLLY-SPL-220 JIGANI-220 || YRNDHLI-SPLT-220

|| ||

|| BIDADI-220 MSEZ-220/110 || HAROHALLI-220

PUTTUR-220/110 KOTIPURA-220 || || KAVOOR-220/110 KANKPURA-220

TUBNKERE-220 || MYSORE-PG-400/220

SIMSHA-220 || SIVSMDRM-220

KUSHALNGR-220 || VAJMNGLA-220

|| TKHALLI-220

|| || HOOTGLY-220 ||

HEBBANI-220 || KADAKOLA-220 || || ||

|| MADUVANHLY-220

|| BEGUR-220 || ||

CHMRJNAGAR-220 DHARMAPURI-400

KADAKOLA-220/66 ||

KOZHIKODE-400/220 SAIL-230 SALEM-400/230/110 || [NOT TO SCALE]

Page 18 of 18 Annexure-III

Proposed Islands in Bengaluru Area

Page 1 of 8 Annexure-III Proposed Islands in Bengaluru

1. Yelahanka Island 2. Kolar HVDC island 3. Nelamangala Island

Page 2 of 8 1. Yelahanka Island Annexure-III • Generation • Yelahanka Gas based Combined Cycle Power Plant • Capacity – 1x370 MW • Load • Yelahanka – 150 MW • Manyata – 40 MW • Hebbal – 110MW • CPRI – 10 MW • Lines to be tripped • 220kV ITI –Hoody S/c • 220kV CPRI-Peenya S/c • 220kV Yelahanka-Nelamangala S/c

Page 3 of 8 2. Kolar HVDC Island (Adaptive) Annexure-III

• Generation • Adaptive Islanding • Talcher Generation – 4x500 MW • sense no. of units available at Talcher Stage-2. • Power Import at Kolar HVDC • Based on no. of units at Talcher • Load • Load would be decided • Kolar – 500 MW • If 3 units available • 400kV Kolar-Hosur D/c shall also • Hoody – 800 MW be tripped • Somanahalli – 500 MW • If 4 units available • 400kV Kolar-Hosur D/c shall not be tripped • Talcher Interconnector should be • Lines to be tripped at Kolar end tripped • 400kV Kolar-Tiruvallam S/c • HVDC • 400kV Kolar-Cuddapa S/c • Frequency control mode to be • 220kV Kolar-Chintamani D/c enabled • Min fault level required is 3.0 Page 4 of 8

2. Kolar HVDC Island (Adaptive) Annexure-III

Page 5 of 8 3. Nelamangala Island (Adaptive) Annexure-III

• Generation • Adaptive Islanding • RTPS/BTPS/Jindal/YTPS • sense no. of units available at RTPS, BTPS, Jindal • Load : ~1000-1100 MW • Depending on units availability, • Nelamangala– 900 MW 400kV lines to be tripped at BPS • Bidadi – 200 MW end.

• Load to be fed through • 400kV BTPS-Jindal-BPS- chikanayakahalli-Nelamangala D/c • 400kV Talaguppa-chikanayakahalli- Nelamangala D/c • 400kV Nelamangala-Bidadi D/c • Gen to be decided at BPS based on Unit availability Page 6 of 8 3. Nelamangala Island (Adaptive) Annexure-III

Page 7 of 8 Annexure-III

Thank You

Page 8 of 8