thermal power development - Infraline

Central electricity authority Annual Report 2009-10
CHAPTER – 3
POWER SYSTEMS PLANNING AND D]EVELOPMENT
3.1 Transmission Planning
All issues relating to planning and
development of Transmission System in the
country are dealt in the Power System Wing of
CEA. This includes evolving long term and short
term transmission plans. The network expansion
plans are optimized based on network simulation
studies and techno economic analysis. This also
involves formulation of specific schemes, evolving
a phased implementation plan in consultation
with the Central and State transmission utilities
and assistance in the process of investment
approval for the Central Sector schemes,
issues pertaining to development of National
Power Grid in the country and issues relating
to trans-country power transfer. Transmission
planning studies are being conducted to identify
evacuation system from generation projects and
to strengthen the transmission system in various
regions. The studies for long-term perspective
plans are also being carried out on All India
basis for establishing inter regional connectivity
aimed towards formation of the National Power
Grid system. The National Power Grid system
is being evolved to facilitate free flow of power
across regional boundaries, to meet the short fall
of deficit regions from a surplus region, for
evacuation of power from project(s) located in
one region to the beneficiaries located in other
region(s) as well as facilitate trading of electricity
among buyers and sellers in various regions.
3.2 Inter-regional Transmission System
in India-National Grid
A National Power Grid in the country
is being developed in phased manner. By now,
all the regional grids have already been interconnected
and total transmission capacity
of inter-regional transmission system, as on
31-03-2010 was 20750 MW. At present, except
Southern Region, all the other four regions are
inter-connected in synchronous mode and are
operating in parallel.
Total inter-regional transmission capacity
by the end of 9 th Plan was 5750 MW. During 10 th
Plan i.e. 2002-07, a total of 8300 MW of interregional
capacities were added. Thus, total interregional
transmission capacity by the end of
10 th Plan was 14050 MW.
During 11 th Plan i.e. 2007-12, interregional
transmission systems of 18600 MW
capacity have been planned and it is expected
that, by end of 11 th Plan, total inter-regional
transmission capacity of the National Power
Grid would be increased to 32650 MW. Out of
the programme for 11 th Plan, 2400 MW capacity
was added during 2007-08, 3300 MW during
2008-09 and 1000 MW during 2009-10. Thus a
capacity addition of 6700 MW has already been
added in 11 th Plan up to 31-03-2010.
Details of existing and planned interregional
transmission capacity up to end of 11 th
Plan are shown in Annexure-3A.
3.3 Regional Standing Committees on
Power System Planning
3.3.1 Introduction
The Regional Standing Committees on
power system planning constituted by CEA have
representation of CEA, Transmission Utilities
of constituent States of the region, Central
Transmission Utility (i.e POWERGRID),
representative of Central Sector Generating
Companies and Regional Power Committee. The
requirement of inter-state transmission system
for evacuation of generation and for system
improvement are evolved on the basis of power
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"Electricity is life: Conserve it."