SUMMER VOCATIONAL TRAINING
7 EC-29 1
List of content :
1. About NTPC
2. Coal to Electricity
3. Layout of Thermal Power Plant
4. Main Equipment of Power Plant
5. C&I Labs
6. Thermal Power Plant in Rajasthan
NTPC-The Power Giant
Formally known as National Thermal Power Corporation Ltd.
Established in Nov’1975.
Arup Roy Choudhury is chairman and MD.
Installed Capacity 43,128 MW.
Projects 17coal based , 7 gas based & 9 in JVs.
Planned capacity 75,000 MW by 2017.
With only 19.24 % of the all India installed capacity, it generates about 26.7 %
Annual turnover of Rs. 73,904 cr. with profit of Rs. 13,834 Cr. for the year 2013-
Share of Coal in Power
Advantages of Coal Fuel
•Abundantly available in India
•Technology for Power Generation
•Easy to handle, transport, store and
•India’s Coal Reserves are estimated to be 206 billion tones. Present consumption is
about 450 million tones.
•Cost of coal for producing 1 unit of electricity is Rs 0.75.
•Cost of Gas for producing 1 unit of electricity is Rs 1.20.
Main Equipments of Power Plant
1. Coal handling plant
2. Pulverizing plant
8. Ash handling plant
Coal handling plant
•The function of coal handling plant is automatic feeding of coal to the boiler
• A thermal power plant burns enormous amounts of coal.
•A 200MW plant may require around 2000 tons of coal daily.
In modern thermal power plant , coal is pulverized i.e. ground to dust
like size and carried to the furnace in a stream of hot air.
Pulverizing is done in pulverizing mill.
Pulverizing mill is further classified in three parts:
A turbine is a rotary mechanical device that
extracts energy from a fluid flow and converts
it into useful work.
It consists one moving part called a rotor
Steam turbines are used for the generation of
electricity in thermal power plants.
In thermal power plant turbine is sub divided
in three parts:
An electric generator is a device that
converts mechanical energy to electrical
It is based upon the principle of
the magnitude of EMF generates by generator
is given by:
Generators provide nearly all of the power
for electric power grids.
Ash handling plant
The percentage of ash in coal varies from 5% in good quality coal to about 40% in
poor quality coal.
Power plants generally use poor quality of coal , thus amount of ash produced by it
is pretty large.
A modern 2000MW plant produces about 5000 tons of ash daily.
Labs Monitored parameter
1. Manometry Lab
2. Protection and Interlocks
3. Automation Lab
4. Electronics Lab
5. Water Treatment Lab
6. Furnaces Safety
Supervisory System Lab
6. Flow of Gases
Thermal power plants in
Chhabra thermal power plant- 500MW
Kota super thermal power plant- 1240MW
Giral lignite power plant- 235MW
Suratgarh super thermal power plant -1500MW
Study material provided by NTPC-vindhyanchal