powerplant general trng
TRANSCRIPT
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POWER PLANTS
AN INTRODUCTION
By
R.Mathur, B.Tech (Elect), IIT Delhi 1968
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Types of Power Plants
Thermal Boiler, Steam Turbine, Generator
Gas Turbine- Gas Turbine, Generator
Nuclear Atomic Reactor, Steam Turbine,
Generator
HydroelectricHydro Turbine, Generator
Wind Power WindMill, Generator
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POWER PLANTTYPES -1
Steam
Turbine
FEED CYCLE
BOILER
Fuel
Coal / Oil / Gas
Air
Steam
GENERATOR
Electrical
Power
THERMAL
Boiler
FEED CYCLE
Fuel
UraniumSteam
GENERATOR
Electrical
Power
NUCLEARAtomic
reactor
Steam
Turbine
Gas
Turbine
Fuel
Oil / Gas
Air from atmosphere
Flue Gas
GENERATOR
Electrical
Power
GAS
TURBINE
BOILE
R
Comb
ustor
Exhaust Gas
Compressor
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POWER PLANTTYPES - 2
GENERATOR
Electrical
Power
WINDMILLWind Mill
HYDRO
Water
Turbine
GENERATOR
Electrical
Power
Water
reservoir
Penstock
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POWER PLANT -ELECTRICAL GENERATOR
ELECTRICAL
SYSTEM
GENERATOR
Electrical
Power3 Ph
AC
Gen Ckt Bkr
Grid
Transformer
AVR
Excitation-DC
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Thermal Power Plant
Main components Boiler Fuel and Air Mixture burns to generate
heat used to boil water into steam
Steam Turbine Energy of steam rotates Turbine Generator mechanically coupled to Turbine,
generates electrical power
Condensate & FeedWater System- Condensessteam and pumps water back to Boiler
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LP TurbineHP
Turbine
BOILER
FEED CYCLE
CONDENSER
GENERATOR
Fuel
Coal / Oil / Gas
Air
Main Steam
CRH Stm
HRH Stm
THERMAL POWER PLANTMAIN COMPONENTS
Electrical
Power
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Thermal Power PlantBoiler - 1
Fuel Gas , Oil, Coal
Air & Flue Gas FD Fans, ID Fans,
Furnace Pressure
Furnace Flame
Feedwater
Boiler Drum, Steam generation
Superheaters
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Thermal Power PlantBoiler - 2
Reheater
Economizer
Air-Preheaters
Electro Static Precipitator (ESP)
Chimney Ash Handling
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Thermal Power PlantSteam Turbine -2
HP Bypass, LP Bypass
Control Fluid / Secondary Oil System
Turbine Bearings
Gland Seal System
Lubricating Oil System Jacking Oil
Turning Gear
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Thermal Power PlantGenerator -1
Stator, Rotor
Excitation DC Voltage , AVR
Stator Cooling Water cooled DM Water
Rotor cooling Hydrogen
Seal Oil System
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Thermal Power PlantGenerator -2
Generator Circuit Breaker
Main Transformer
Switchyard
Grid
Synchronization Auxiliary Transformer
Islanded Operation
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Thermal Power Plant-Condensate & FeedCycle -1
Condenser Vaccum
Condenser Cooling water System, Cooling
Tower
Hotwell
Condensate Extraction Pumps
LP Heaters
Extraction Steam
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Thermal Power Plant-Condensate & FeedCycle -2
Deaerator
Boiler Feed Pumps Scoop Tube
HP Heaters
Feedwater Control Station 1 / 3 Element
Control
Economizer
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Gas Turbine Power Plant
Main Components Air Compressor Takes air from atmosphere
through Filters and delivers at pressure
Fuel Supply
Gas , Oil Combustion Chamber- Fuel + air from compressor
burn, generating hot flue gas
Gas Turbine energy of Hot flue gas rotates gas
turbine Generator-mechanically coupled to turbine,
generates electrical power
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Gas Turbine Power Plant
Heat Recovery-Combined cycle Exhaust Gas from GT is very hot-approx 500 Deg
C
WHRSG
to recover energy from exhaust gas
Steam from WHRSG used to drive Steam Turbine
as in Thermal Power Plant
Efficiency Improvement due to WHRSG
Combined Cycle =Brayton Cycle for GT +
Rankine Cycle for ST
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PLANT OVERVIEW