This presentation provides an overview of the NTPC Faridabad power plant: (1) The 430 MW power plant uses natural gas and supplies all of its power to the state of Haryana. (2) It uses a combined cycle process with two gas turbines and one steam turbine to generate electricity. (3) After expanding through the gas turbine, exhaust gases are used to generate steam in a heat recovery steam generator (HRSG) before powering a steam turbine. The switchyard is responsible for evacuating the power produced to the state transmission grid via several 220kV transmission lines.

1. PRESENTATION ON
NTPC FARIDABAD
BY - INSTRUCTOR -
BHANU PRATAP SINGH MR. ZEESHAN HAIDER
E.I. / 090105012

2. Faridabad – At a Glance
 Est. 1997, this state of the art power plant has
a production capacity of up to 430 MW.
 It is the only power plant in this country to
supply its entire power to a state i.e. Haryana
rather than to the national grid.
 It consist of 2 Gas Turbines and 1 Steam
Turbine.
The source of fuel is Natural Gas through HBJ
pipeline.
The water source canal is Gurgaon Canal.

3. What is a Combined Cycle Power
Plant?
 A gas-fired combined-cycle power plant, also known as a
Combined Cycle Gas Turbine.
 Power Plant, combines the strengths of two thermal
processes in ideal fashion electricity production using a
1. Gas turbine together with a
2. Steam turbine
 The acronym normally used to describe this system is
CCGT.

4. Compressor
 It intakes air from atmosphere via filter.
 It consists of rotors and stators.
 All the is done by rotor. The stator converts Kinetic Energy of fluid to
Pressure Energy which is directed to the next door.
 The compressor has inlet vanes to guide the air to enter, the rotor
increases the speed whereas the stator converts this K.E to Pressure
Energy.
 Thus the exiting gas has both high pressure as well as temperature.

5. Fuel
 Possible sources of fuel are : Natural gas, High Speed Diesel
(HSD) and Naphtha.
 However the use of Natural gas as prominent fuel because it has the
highest specific heat Capacity or in layman’s term due to its high
hydrogen to carbon ratio it produces maximum water content.
 Natural gas has lower exhaust gas emissions compared to diesel oil.
 In addition, the cost and effort needed to maintain and service
turbines powered with natural gas is usually lower compared to
diesel oil.
 Naphtha although is a good substitute to Methane, but is quite
costlier.

6. Combustion Chamber
 The compressed air is fed into this chamber along with the fuel i.e.
natural gas.
 The combustion takes place here and hot gases are produced as exhaust
from it.
 This gas is fed to the gas turbine.

7. Gas Turbine – Heart of the Plant
About the turbine
 NTPC uses type V94.3A2 gas
turbines, manufactured by the
Italian company Ansaldo, under a
license provided by Siemens.
 The turbine weighs roughly 300
tons and yields a nominal electrical
output of 143 MW.
 The two turbines account for the
two-third of the total power
produced by the plant.

8. Gas Turbine – Heart of the Plant
Process
 The combustion produced hot gases are fed into it.
 The hot gases are allowed to “relax” in the chamber which means they
are virtually allowed to expand in an ambient temperature.
 This energy powers the mechanical rotation of the turbine.
 This rotation powers the compressor as well as the generator.
 The exit temperature of these gases from turbine is around 600° C.

9. What to do with exhaust gases with
released from turbine ?
Should we allow them to exit to the atmosphere ?
Or
Can we obtain a useful output from them ? !!

10. Heat Recovery Steam Generator
is the answer…..

11. Heat Recovery Steam Generator
 An HRSG is a reservoir which contains water.
 This water is converted to its vapor by ejecting the “waste” hot exhaust
gases into this chamber.
 The hot gases vaporize the water, thus providing another source for a
mechanical rotation.
 It has three areas, each with a different pressure level; one high, one
medium and one low.
 By dividing into these three levels, it is possible to harness an
impressive amount of the energy contained in the exhaust gas.
 The vapor is then fed to the steam turbine.

12. Steam Turbine
About the Turbine
 Manufactured by Ansaldo under a
license provided by BBC (ABB).
 Output of 144 MW.
 One third of total produced in the
plant.

13. Steam Turbine
Process
 Like the HRSG, it is divided into three pressure levels: one high, one
medium and one low.
 The respective area of the steam boiler sup-plies the steam turbine with
the correct steam.
 This is then allowed to “relax” in the turbine (similar to the gas
turbine); in other words, it releases pressure.
 The turbine converts the steam energy into a mechanical rotation
that is then transferred to the generator. There, it is transformed into
electricity.

14. Steam Surface Condenser
 The source of the circulating
water can be either a closed-
loop (i.e. cooling tower, spray
pond, etc. or from a lake,
ocean, or river).
 The condensed steam from the
turbine, called condensate, is
collected in the bottom of the
condenser, which is called a
hot well.
 The condensate is then
pumped back to the steam
generator to repeat the cycle.

15. Why is the condensate also called as a Hot
well ?
 The vapor is cooled to liquid. This water is to be reused to form vapor.
 Therefore the vapor is cooled to a temperature so that it just becomes
liquid.
 Thereby less of energy will be required to again raise the temperature to
convert it to vapor, which shall indeed increment the efficiency of plant.
 Thus the condensate is often called a “Hot” well.

17. Other Modules of the Cycle

18. Cooling Tower
 It is used to transfer the waste heat to atmosphere.
 It works under two actions:
1. Counter Flow
2. Cross Flow

19. Types of Cooling Tower

20. BASIC ELECTRICAL OPERATIONS
AND SWITCHYARD

21. Basic Transmission Layout

22.  The Electrical Operations Dept. at NTPC- Faridabad takes care of
the running of the electrical systems as well as maintaining them.
 This is the largest department under the Maintenance section. This
department takes care of all the electrical aspects of the plant. It
takes care of the following sections-
 Switchyard
 Generator
 Generator Transformer
 Conveyor Motors and other motors
 All power transmission

23. SWITCHYARD

24. SWITCHYARD
 The switchyard is the place where the station last takes care of the
power it produces.
 The switchyard links the power generated to the Haryana Vidyut
Prasaran Nigam.
 Power Evacuation –
 2 x 220kV Double Circuit lines to Palla (Faridabad).
 2 x 220kV Double Circuit lines to Samaypur (Ballabgarh).

25. THANK YOU