This document provides an overview of the NTPC Dadri Gas Power Station in India. It discusses the various power generation capacities including 817MW from gas turbines. The station uses a combined cycle with both gas turbines and steam turbines to increase overall efficiency. It describes the basic Brayton and Rankine cycles used in the plant and highlights components like the compressor, combustor, turbine, waste heat recovery boiler, condenser, and cooling tower. The summary briefly outlines some advantages and disadvantages of the gas turbines used at the plant. It also discusses how power is transmitted from the generators to the grid through transformers and a switchyard, and how the control room monitors and operates the entire facility.

1. PRESENTATION
ON
NTPC DADRI GAS POWER
STATION
SUBMITTE BY:-
ER ABDUL HADI RAHMANI
ROLL NO-151 2740001
B.TECH(ME) 4TH
YEAR
IIMT ENGINEERING COLLEGE(127)
SUBMITTED TO:-
AST.PROF.NADEEM ALI
DEPT.OF MECHANICAL ENGG.

2. NTPC DADRI
TOTAL CAPACITY OF DADRI POWER PLANT
 THERMAL
04X210 MW = 840 MW
02X490 MW = 980 MW
TOTAL = 1820
GAS
817MW
SOLAR
05MW
GRAND TOTAL = 2642 MW

4. COMBINED CYCLE
FUELS USED IN COMBUSTION CHAMBER
COMPRESSOR
COMBUSTION CHAMBER
GAS TURBINE
WHRB
CONDENSER
COOLING TOWER
 ADVANTAGE
DISADVANTAGE
CONTROL ROOM
GRID
SWITCH YARD
POINTS TO BE COVER

5. GGGAS
TURBINESGA• Invented in 1930 by Frank Whittle.
• Patented in 1934.
• First used for aircraft propulsion in 1942 on Me262 by
Germans during second world war. • Currently most of
the aircrafts and ships use GT engines .
• Used for power generation.
• Manufacturers: General Electric, Pratt &Whitney,
SNECMA, Rolls Royce, Honeywell, Siemens –
Westinghouse, Alstom
• Indian take: Kaveri Engine by GTRE (DRDO). It had
developed the GTX37-14U afterburning turbojet, which
first ran in 1977, and was the first jet engine to be
designed entirely in India.
GAS TURBINE

6.  Combined Cycle Power Plants
COMBINED CYCLE
GT1 GT2
ST1
GT3 GT4
ST2
 COMBINED CYCLE POWER PLANTS INTEGRATES TWO POWER
CONVERSION CYCLE
 BRAYTON CYCLE (GAS TURBINE)
RANKINE CYCLE(STEAM TURBINE)
TO INCREASE THE OVERALL PLANT EFFICIENCY

7. BRAYTON CYCLE
HOW THEY WORK
•Firstly air is filtered through the AIR FILTERS which are mounted at the top of
the ROOM
• Air passes through the COMPRESSOR, and the pressure increases and the
volume decreases
•COMBUSTION occurs at constant pressure-air heats upvolume increases
•The rotor turns and convert the KINETIC and THERMAL ENERGY into
MECHANICAL ENERGY
•The gas passes through the TURBINE ROTOR

8. RANKINE CYCLE
THE CONVERSION OF HEAT ENERGY INTO MECHANICAL ENERGY WITH THE AID OF
STEAM CARRIED OUT THROUGH THIS CYCLE
INITIAL STATE OF WORKING FLUID IS WATER WHICH COMPRESSED BY THE FED
PUMP
IN THE BOILER THE COMPRESSED WATER IS HEATED AT CONSTANT
PRESSURE
AFTER THIS SUPERHEATED STEAM IS EXPAND AT STEAM TURBINE

9. NATURAL GAS
DIESEL
LPG(LIQUID &GASEOUS)
NAPTHA
SEWAGE GAS

10. COMPRESSOR
COMPRESSING THE AIR BEFORE COMBUSTOR INCREASE THE EFFICIECY
COPRESSOR COPMPRESS THE AIR UPTO 18 TIMES THE ATOMOSPHERIC PRESSURE
COMPRESSOR IS DRIVEN BBY THE TURBINE SHAFT
2/3 OF POWER OF TURBINE IS USED TO DRIVE THE SHAFT

11. • COMBUSTOR IGNITE THE HIGH PRESSURE AIR WHICH IS
COME FROM COMPRESSOR.
• TEMPRATURE OF HOT FLUE GASES RANGES FROM 1400C-
1500c
• CHANGE THE CHEMICAL ENERGY OF FUEL INTO THERMAL
ENERGY FOR EXPANSION IN TURBINE

12. WASTE HEAT RECOVERY BOILER
IT WORKS ON COMBINED CYCLE
EXHAUST OF THE GAS TURBINE USED IN A HEAT EXCHANGER CALLED WHRB
IT IS MAINLY IMPLEMENTED FOR ENHANCING THE OPERATIONAL EFFICIECY

13. CONDENSER
CONDENSER IS A HEAT TRANSFER DEVICE IN WHICH THE EXHAUST STEAM OF A
TURBINE IS CONDENSED BY MEANS OF COOLING WATER
IT IMPROVES THE THERMAL EFFICIENCY OF PLANT
IT AFFECTS THE SAVING IN COST OF WATER TO BE SUPPLIED TO BOILER

14. COOLING TOWER
COOLING TOWER IS USED TO PROVIDE THE COOL WATER TO CONDENSER
COOLING TOWER IS PROVIDE TO REUSE THE WATER WHICH COMES FROM
CHANGING THE STEAM BY THE CONDENSER
IT CONSIST OF TEN CELLS WITH LARGE FAN OF SON TOP INSIDE THE CONE LIKE
STACKS ,AND A BASIN OF WATER UNDERNEATH

15. ADVANTAGES OF GAS TURBINE
• Less installation Period
• Simplicity
• Less manpower requirements
• Quicker response time
• Faster Acceleration/deceleration
• Modular replacement
• Clean fuels
• Less vibrations
•Less Area Required

16. DISADVANTAGE OF GAS TURBINE
•High cost of generation.
• High cost of maintenance.
•High frequency of
inspection/overhauling.
• Hot gas path components under high
thermal stress.
• Needs large quantities of Clean air

17. .
Transmission of Generated
PowerOnto the Grid
Transformers

18. .
From each transformer, the power passes underground into our
switchyard. The power from all of the generators comes together
there
, where it is measured, metered and directed on to the grid.
 The proximity of the site to a large, existing PG&T substation makes it
a good place to build a power plant and the nearest transmission
tower is only about 200 feet away.
SWITCHYARD

19. From the control room, the plant operators monitor and operate the
facility, via the plant’s “ Distributed Control System”, with the click of a
mouse, viewing graphic representations of all MEC systems on various
screens.
 The system gives operators both audible and visual signals to keep
them informed of plant conditions at all times and to determine
when preventative maintenance is required
CONTROL ROOM