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Development of Transmission System in India

Development of Transmission System in India. India - Present Power Scenario. Generation Peak Demand : 132 GW Growth Rate : 9 – 10 % (per annum). Total Installed Capacity – 228.7 GW (As on 30.09.13). Evolution of National Grid. National Grid. Interconnecting Regional Grids with HVDC.

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Development of Transmission System in India

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  1. Development of Transmission System in India

  2. India - Present Power Scenario • Generation • Peak Demand : 132 GW • Growth Rate : 9 – 10 % (per annum) Total Installed Capacity – 228.7 GW (As on 30.09.13)

  3. Evolution of National Grid National Grid Interconnecting Regional Grids with HVDC Regional Grids with ATS of Central Generation 2000 onwards 1990s State Grids by SEBs 1970-80s (Paradigm Shift from self sufficiency at Regional level concept to National level) 1950-60’s Local 1950’s

  4. August 2006 North synchronized With Central Grid Five Regional Grids Two Frequencies March 2003 West synchronized With East & Northeast NEW Grid October 1991 East and Northeast synchronized South Grid Central Grid MERGING OF MARKETS North East West Northeast South Installed Capacity 229 GW Five Regional Grids Five Frequencies 4

  5. Transmission Network - Present The ‘Electrical’ Regions NORTHERN REGION 1 NORTH-EASTERN REGION EASTERN REGION WESTERNREGION 2 SOUTHERN REGION • Transmission network • spread geographically over 3.3million sq km : Inter-State and Intra-State level • Transmission line : 2,80,571 ckm (POWERGRID : 1,020,000 ckm) • 765kV : 7910 ckm • 400kV : 1,20,693 ckm • 220kV : 1,42,536 ckm • HVDC Bipole (±500kV) : 9,432 ckms • Transformation capacity (MVA/MW) • HVAC :474,091 MVA (POWERGRID : 170,000MVA, 171 S/s) • 765kV : 56,500 MVA • 400kV : 170,397 MVA • 220kV : 247,194 MVA • HVDC : 13,500 MW • FSC – 33nos., TCSC – 6 nos.

  6. Inter-Regional Capacity - Existing NR NER SR Present IR Capacity – 31,850 MW 6,220 MW 14,230 MW 1,260 MW ER WR WR 4,390 MW 1,520 MW 3,630 MW 6

  7. Players in the Power Sector Generators Central/State GENCO, IPP, Captive CTU Inter-State Trans. system, Open Access System Operator STU Intra-State Tr./Sub-tr. system Power Exchange Traders DISCOMS Consumers Industries, household, agriculture

  8. Role of POWERGRID as CTU • To undertake transmission of electricity through ISTS • To discharge all functions of planning and co-ordination relating to ISTS with Central Govt, CEA, RPC, STU, Trans Licensees. • To ensure development of an efficient, co-ordinated and economical system of ISTS lines for smooth flow of electricity from generating stations to the load centres • To provide non-discriminatory access to its transmission system for use by any licensee or generating company on payment of the transmission charges; or any consumer as and when such open access is provided by the State Commission

  9. Grid Management - Hierarchy NLDC: Ensure integrated operation of National Grid RLDC: Ensure integrated operation of Regional Grid 5 SLDC: Ensure integrated operation of State Grid 31

  10. National Grid - Future

  11. Projected Power Scenario Need of new initiatives in Transmission # Considering 9% GDP growth rate 205GW Present Generation Capacity & Demand - 228 GW & 132 GW ** Source- Planning commission report on IEP

  12. Demand Pattern in India Ahmedabad Mumbai & Pune Hyderabad Bangalore & Chennai Source: NASA Satellite Snapshot

  13. Energy Resource Map Energy resources (coal, water etc.) unevenly distributed Hydro • Coal – In Central India - Chhattisgarh : 58000 MW - Orissa : 30000 MW - Jharkhand : 15000 MW - Madhya Pradesh:16000 MW • Hydro –In North Eastern & Northern Himalayan region • Coastal based - Andhra Pradesh: 24000 MW - Tamil Nadu : 10000 MW - Gujarat : 11000 MW Coal

  14. 12th Plan (2012-17) Capacity Addition : 88 GW Thermal – 72 GW Hydro – 11 GW Nuclear – 6 GW Renewable Capacity Addition - 12th Plan(2012-17) : 42 GW Wind – 30 GW Solar – 10 GW Small Hydro – 2 GW Future Generation Scenario (5-6 Years)

  15. Transmission Line : 1,10,000 ckm (POWERGRID – 40,000ckm) 765kV – 27,000 ckm 400kV – 38,000 ckm 220kV/132kV – 35,000 ckm HVDC – 9,500 ckm Substations : about 270,000 MVA (POWERGRID – 100,000 MVA) Expansion Programme – 12th Plan

  16. Emerging National Grid • National Grid comprises of Inter-State, Intra-State and Inter-regional transmission system • Cummulative Growth of Inter-regional capacity in MW 66000 80000 60000 27750 40000 20000 0 By 2016-17 2011-12 National Grid – A Continuing Process

  17. Augmentation of IR Capacity in XII Plan NR 6000 MW NER 10200 MW 5800 MW 1600 MW ER WR 8400 MW 6400 MW National Grid - XII Plan addition – 38,400 MW National Grid - Total by XII Plan – 66,000 MW SR

  18. Technology

  19. Pursuing Higher Voltage Levels Voltage (kV) World’s Highest Voltage level – Test station Charged in Oct.’12 World’s longest multi-terminal HVDC to harness renewable Hydro Power from North-east 1200kV 765kV D/C - AC 800kV HVDC 765kV 500kV HVDC 400kV 220kV 1977 1990 2000 2002 2012 2017-18 Year

  20. Technology being Adopted • High Voltage line • Increase the capacity of trans. corridor through HSIL/re-conductoring with HTLS /Upgradation • Utilisation of existing transmission lines upto full thermal capacity – Series capacitors, SVC, FACTS • Optimization of Tower design – tall tower, multi-ckt. tower • GIS substation • EHVAC : 400kV  765kV  1200kV • HVDC : 500kV  800kV

  21. High Power Intensity Corridor Road Map for Indian Power System 176 m 69 m

  22. Implementing +800kV HVDC Bipole Link • World’s longest multi-terminal ±800 kV HVDCunder implementation from BiswanathChariali, North-Eastern Region to Agra, Northern Region. • Shall transmit power to the tune of 6000-8000 MW. Biswanath Chariali Agra 2000 km

  23. Indigenous Development of 1200kV UHVAC • World’s highest voltage, 1200kV UHV AC, test charged at Bina, Madhya Pradesh in October 2012. • Has been Developed Indigenously through Public Private Partnership (PPP) with 35 Indian manufacturers in open collaboration.

  24. Development Plan

  25. Change in Generation Profile XI XII

  26. Long Term Open Access / Connectivity Long-term Open Access Application Received : 218no. , 132,000MW Granted : 148 No., 83,000 MW : Connectivity Application Received : 188no. , 176,300MW Granted : 84 No., 74,400 MW Short Term Open Access 2012-13 : 32,000 transactions, 74BU energy

  27. High Capacity Corridors

  28. HIGH CAPACITY CORRIDORS

  29. Cross-Country Interconnection

  30. Linkages with Neighboring Countries

  31. India - Bhutan : Interconnection

  32. India - Nepal : Interconnection

  33. India – Sri Lanka Interconnection Madurai-New Madurai 48 Kms 130 Kms 120 Kms Panaikulam Thirukketiswaram * Taliamannar 110 Kms Proposed Route for Interconnection New Anuradhapura

  34. Issues & Challenges Road Map for Indian Power System • Issues concerning availability of RoW and same are becoming critical – • Resistance of people, terrains in areas of mountains and forest • Sector to grow from 228 GW to 600 GW in next 20 years – Even 765kV system may not be good enough. New methods have to be found out • Challenges to develop Transmission system to meet the requirement of power flow from anywhere to anywhere. • With increasing magnitude of power transmission, create new challenges of proper O&M

  35. Thank you

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