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1. OVERVIEW OF NTPC
POWER PLANT
PRESENTED BY :-
JAIDEEP VERMA
5TH - A
MECHANICAL ENGG.

2. CONTENTS
INTRODUCTION
BOILER AND ITS COMPONENTS
TURBINE
GENERATOR
SWITCHYARD

3. INTRODUCTION
 NTPC is India’s largest energy power plant which was
established in 7 Nov. 1975 to generates power
development in India.
 There are total 7 units in plant in which 4 units are of
500MW and 3 units are of 200MW power produce.
 Total consumption of coal for producing 2600MW is
about 48000 tons of coal per day.

4. BOILER
 A boiler is closed vessel in which water is converted
into steam by utilizing the heat of coal combustion.
 Steam boilers are broadly classified into following two
types:-
 (a) Water tube boilers ,(b) Fire tube boilers.

5. WATER TUBE BOILER
In a water tube boiler, water
flows through the tubes and
the hot gases of combustion
flow over these tubes. Water-
tube boilers are used for high-
pressure boilers.

6. TURBINE
 A turbine is a rotary mechanical device that
extracts energy from a fluid flow and converts it into
useful work. In which there are THREE types of turbine
used in NTPC power plant are as follows:-
 High pressure turbine(HP).
 Intermediate pressure turbine(IP).
 Low pressure turbine(LP).

7. HP TURBINE
 HP turbine is a high
pressure turbine the steam
comes through the boiler
first goes into HP turbine
and it is a unidirectional
turbine.

8. IP TURBINE
In IP turbine the steam of HP
turbine goes into the air
preheater for reheating and
after this steam flows into a IP
turbine.
Intermediate pressure turbine
is a bi-direction.

9. LP TURBINE
 The steam of IP turbine
directly goes into a LP
turbine for further expands
the steam generating more
energy.
 LP turbine is large in size as
compare to IP because it
requires to handle the
steam flow.

11. GENERATOR
 Generator is a device which converts mechanical
energy of steam comes through the turbine into
electrical energy.
 Generating capacity of 500MW is 21KV O/P voltage.
 Existing speed of generator is 3000 rpm.

13. GENERATOR TRANSFORMER
 Generator transformer is
used to store the
power(ELECTRICITY)
which is generated by the
generator.

14. SWITCHYARD
 It is the protective part of
the whole power system.
 Switch yard is also most
essential part for
transmission, distribution,
and collection.

15. THANK YOU