BANGALORE TRANSMISSION PLANNING

PRESENT SCENERIO Peak Load recorded for the state was 9503 MW at 19hrs on 7th April 2014. The load met in Bangalore city during peak load of the state was 2314 MW with existing transformation capacity 400kV- 4500 MVA. 220kV- 5035 MVA. 66kV - 5119 MVA.

PLANNING CRITERIA Criteria for single contingency (N-1): Outage of single circuit but without load shedding/ rescheduling of generation Criteria for second contingency (N-1-1): Outage of double circuit but without load shedding/ rescheduling of generation Criteria for single contingency (N-1): (TRANSFORMERS): Outage of any single unit would not overload the remaining ICTs or the underlying system.

PLANNING PROCESS Bangalore city is modeled for peak load recorded for the state (9500MW). Load flow studies for existing transmission network of Bangalore area considering, immediate strengthening required in the system For different contingency and operating conditions (in certain critical conditions) Future planning to meet the load growth, in order to overcome congestion and ensure reliable power supply to consumers

Bengaluru Network Strengthening Sl. No. Particulars Total Cost Rs in Crores 1. 400 kV GIS Sub-station at Mylasandra Rs.1720 Crs 2. 220kV GIS Sub-Stations at ITI, Korgamangala, Kumbalgod and Brindavan Alloys 3. 220 kV UG Cable between Bidadi- VV Valley 4. Conversion of Existing 66kV Transmission line with HTLS /Drake conductor

Devanahalli 400KV Station Manyatha Park 220KV STATION ITI Brindavan Alloys 220KV UG CABLE 1200 sqmm V.Valley Koramangala Kumbalgod Mylasandra Bidadi

NETWORK CAPACITY At the end of 12th plan the total transformation capacity ( existing & proposed) at different voltage levels 400/220 kV – 7500 MVA 220/66 kV – 7185 MVA 66/11 kV – 6233 MVA System Loss reduction- 66 MWs

New Technology used in KPTCL

USAGE OF COVERED CONDUCTOR

COVERED CONDUCTOR SPECIFICATION Cross Section 99 mm2 Bare conductor diameter 12.75 mm Inner semi conductive Layer thickness 0.3 mm Inner XLPE covering thickness 3.0 mm Outer UV resist XLPE covering thickness 1.0 mm Diameter Over covering 21.4 ~ 23.4 mm Weight 587 Kg/km DC resistance 0.334 Ohm/km Maximum Load 343 Amps Aluminum Alloy ACSR Max. Short circuit current 1 Sec 8.3 kA

USAGE OF COVERED CONDUCTOR Used for by passing existing 66kV line between DG Plant- Chikkabettahalli limits

Q & A

Yeramarus, Edlapur and BTPS 3rd unit evacuation scheme

GENERATION 4000MWs WIND 1000MWs GENERATION 4100 MWS LOAD CENTRE

Existing Network Mehboobnagar Gooty RTPS – 1720 MW Guddadhalli Narendra P BTPS 2x500 MW+1x700 MW G P Gooty G G JSW-4x300 MW +2x130 MW Kaiga 4x220 K Guttur Talguppa K Hiriyur P UPCL K G P Nelamangala Hoody Shantigrama K P 400 kV Quad Moose Line Bastipura Kolar P Bidadi P 400 PGCIL Substation P P Cuddapa Somanahalli 400 KPTCL Substation K Hosur Salem Salem

Gooty Bastipura Mehboobnagar Kudgi -2400 MW ETPS –1x800MW Stage - 1 YERAMARUS TPS Scheme Mehboobnagar Kolhapur Sholapur Gulbarga K Kudgi -2400 MW Stage - 1 ETPS –1x800MW Kudagi G RTPS – 1720 MW G G G YTPS 2x800 MW Guddadhalli R-New (PGCIL) P BTPS 2x500 MW+ 1x700 MW Narendra P G P Gooty K Kurnool Bellary PS G G JSW-4x300 MW +2x130 MW + 660MW Kaiga 4x220 Rampura Limits K Guttur Talguppa K P Hiriyur Tumkur K P CN Halli Kolar HVDC Yelahanka K G P P Nelamangala UPCL Shantigrama Hoody K 765 kV Line Bastipura P 400 kV Quad Moose Line Kolar P Bidadi 400 PGCIL Substation P P K Somanahalli P Mylsandra 400 KPTCL Substation Kozikode Cuddapa K Hosur Salem Salem

Yeramarus Evacuation Scheme (Proposed) Phase-1 To Establish 400/220 kV substation at Gulbarga. To Establish 400 kV pooling station near ‘BTPS’. To Establish 400 KV switching station at Chikkanayakanahalli (C.N Halli) near “Loop in Loop Out” (LILO) point of the existing 400/220 KV sub-station at Hassan. 400 kV DC Line with Quad Moose Conductor to link ‘YTPS’ with the proposed 400 kV pooling station near ‘BTPS’. ( 150 kms) 400 kV DC Line with Quad Moose Conductor to link the proposed 400 KV pooling station near ‘BTPS’ with the upcoming 765/400 KV station (New Madhugiri) near Tumkur. (200 kms) 400 kV DC Line with Quad Moose Conductor to link the proposed 400 KV pooling station near ‘BTPS’ with the proposed 400 kV pooling station near C.N.Hally (200 kms)

Yeramarus Evacuation Scheme (Proposed) 400 kV DC Line with Quad Moose Conductor to link ‘YTPS’ and 400/220 kV substation at Gulbarga. (160 kms) To LILO of both the circuits of Nelamangala – Talaguppa 400kV lines to the proposed pooling station near CN Halli. To link 400 KV Hassan station and CN Halli station by DC line by re arranging existing Hassan- Nelamangala line. To de-link 400 kV SC Line running between RTPS-BTPS-JSW-Guttur with ‘BTPS’ and JSW Bus so as to retain direct connectivity between RTPS & Guttur. To link both ‘BTPS’ and ‘JSW’ with Quad Moose conductor directly to the proposed 400 KV pooling station near BTPS.

Yeramarus Evacuation Scheme (Proposed) Phase-2 400 kV DC Line with Quad Moose Conductor to link ‘ETPS’ with ‘YTPS’. (30 kms) 400 kV DC Line with Quad Moose Conductor to link ‘ETPS’ with the proposed 400 kV pooling station near ‘BTPS’. (160 kms) 400 kV DC Line with Quad Moose Conductor to link the proposed 400 KV pooling station at C.N Hally with the 400/220 KV station at Bastipura (130 kms)

Estimated Cost Schemes are to be executed in two Phases. Station ( 3 nos) Rs 300 Crs Line ( 710 kms) Rs 1810 Crs Total Rs 2110 Crs Estimated Cost : (Gulbarga & Edlapur) Line ( 320 kms) Rs 820 Crs Total Rs 820 Crs

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