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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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Development of transmission system in india

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)


Development of transmission system in india

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


Development of transmission system in india

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


Development of transmission system in india

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.


Development of transmission system in india

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


Development of transmission system in india

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


Development of transmission system in india

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


Development of transmission system in india

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


National grid future

National Grid - Future


Need of new initiatives in transmission

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


Development of transmission system in india

Demand Pattern in India

Ahmedabad

Mumbai & Pune

Hyderabad

Bangalore & Chennai

Source: NASA Satellite Snapshot


Development of transmission system in india

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


Development of transmission system in india

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)


Development of transmission system in india

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


Development of transmission system in india

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


Development of transmission system in india

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


Technology

Technology


Development of transmission system in india

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


Development of transmission system in india

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


Road map for indian power system

High Power Intensity Corridor

Road Map for Indian Power System

176 m

69 m


Development of transmission system in india

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


Development of transmission system in india

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.


Development plan

Development Plan


Development of transmission system in india

Change in Generation Profile

XI

XII


Development of transmission system in india

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


Development of transmission system in india

High Capacity Corridors


Development of transmission system in india

HIGH CAPACITY CORRIDORS


Cross country interconnection

Cross-Country Interconnection


Development of transmission system in india

Linkages with Neighboring Countries


Development of transmission system in india

India - Bhutan : Interconnection


Development of transmission system in india

India - Nepal : Interconnection


Development of transmission system in india

India – Sri Lanka Interconnection

Madurai-New

Madurai

48 Kms

130 Kms

120 Kms

Panaikulam

Thirukketiswaram *

Taliamannar

110 Kms

Proposed Route for Interconnection

New Anuradhapura


Road map for indian power system1

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


Development of transmission system in india

Thank you


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