This document provides a summary of a seminar on summer vocational training at NTPC thermal power plants. It discusses the key components of a thermal power plant including coal handling, pulverizing, boilers, turbines, generators, condensers, and ash handling. It also describes various equipment like ball mills used in pulverizing coal and control and instrumentation labs that monitor critical parameters. Finally, it lists some major thermal power plants in Rajasthan and references used in preparing the seminar.

1. A SEMINAR
ON
SUMMER VOCATIONAL TRAINING
BY:
DHEERAJ PATHAK
7 EC-29 1

2. 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
7. Conclusion
8. References
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3. 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 %
of power.
Annual turnover of Rs. 73,904 cr. with profit of Rs. 13,834 Cr. for the year 2013-
14.
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4. Coal to Electricity ….. Basics
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5. 5
Why Coal?
Share of Coal in Power
Generation
Advantages of Coal Fuel
•Abundantly available in India
•Low cost
•Technology for Power Generation
well developed.
•Easy to handle, transport, store and
use
•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.
Coal
55%
Gas
10%
Diesel
1%
Hydel
26%
RES
5%
Nuclear
3%

6. General Layout of Thermal Power
Plant
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7. Main Equipments of Power Plant
1. Coal handling plant
2. Pulverizing plant
4. Boiler
5. Turbine
6. Generator
7. Condenser
8. Ash handling plant
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8. Coal handling plant
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•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.

9. Pulverizing plant
 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:
 Contact mill
 Ball mill
 Impact mill
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10. Boiler
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11. Turbine
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
assembly.
Steam turbines are used for the generation of
electricity in thermal power plants.
In thermal power plant turbine is sub divided
in three parts:
 HPT
 IPT
 LPT
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12. Generator
An electric generator is a device that
converts mechanical energy to electrical
energy.
It is based upon the principle of
electromagnetic induction.
the magnitude of EMF generates by generator
is given by:
E=4.44φFN volts
Generators provide nearly all of the power
for electric power grids.
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13. Condenser
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14. 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.
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15. C&I Labs
Labs Monitored parameter
1. Manometry Lab
2. Protection and Interlocks
Lab
3. Automation Lab
4. Electronics Lab
5. Water Treatment Lab
6. Furnaces Safety
Supervisory System Lab
1. Speed
2. Temperature
3. Current
4. Voltage
5. Pressure
6. Flow of Gases
7. Vibration
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16. Conclusion
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17. Thermal power plants in
RAJASTHAN
Chhabra thermal power plant- 500MW
Kota super thermal power plant- 1240MW
Giral lignite power plant- 235MW
Suratgarh super thermal power plant -1500MW
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18. References
http://www.ntpc.co.in/
http://en.wikipedia.org/wiki/NTPC_Limited
http://en.wikipedia.org/wiki/Steam_turbine
http://en.wikipedia.org/wiki/Boiler_(power_generation)
http://www.asope.org/pdfs/AC_Electrical_Generators_ASOPE.pdf
http://geosci.uchicago.edu/~moyer/GEOS24705/Readings/ElectricityReadi
ng.pdf
Study material provided by NTPC-vindhyanchal
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Thank You!!