basic things about power plant

2. Horipur power plant
360MW combine cycle power plant
 GT- GAS TURBINE= 247MW
 ST-STEAM TURBINE= 131.6MW
 Type of fuel: natural gas from titas.
 Axial compressor , reaction turbine.
 Required water 20-22 ton per day.
 Gas turbine:
 Shaft speed: 3000 RPM
 Compression ratio: ( 17:1)
 80% RH , 26* C Tem , 1 atm .

3.  Combined Cycle Power Plant:
The Combined Cycle Power Plant or combined cycle gas turbine, a gas turbine
generator generates electricity and waste heat is used to make steam to generate
additional electricity via a steam turbine.
 How a Combined-Cycle Power Plant Produces Electricity:
 Gas turbine burns fuel:
The fast-spinning turbine drives a generator that converts a portion of the spinning
energy into electricity.
 Heat recovery system captures exhaust:
The HRSG creates steam from the gas turbine exhaust heat and delivers it to the
steam turbine.
 Steam turbine delivers additional electricity:
The steam turbine sends its energy to the generator drive shaft, where it is converted
into additional electricity.

5. Basic Components of gas turbine:
 •Compressor
–Draws in air & compresses it
 •Combustion Chamber
–Fuel pumped in and ignited to burn with compressed air
 •Turbine
–Hot gases converted to work
–Can drive compressor & external load
 STEAM TURBINE: A steam turbine is a prime mover in which the potential
energy of the steam is transformed into kinetic energy and later in its turn is
transformed into the mechanical energy of rotation of the turbine shaft.

7. Note: Combined cycle gas turbine(CCGT) - refers to a gas fired electricity
generation plant which uses waste heat to run a steam turbine.
COMPONENTS USED IN POWER PLANT (GAS TURBINE)
• SCRUBBERS: FUEL PASSES THROUGH SCRUBBERS THROUGH 10 INCH
HEADER TO REMOVE & TO CONTROL MAJOR DUST , DIRTY PARTICLES ALONG
WITH LIQUID GASES.
• FLAME ARRESTER: IT IS USED TO AVOID ANY KINGD OF ACCIDENTAL FIRE &
ANY ENVIRONMENTAL HAZARD CAUSES DUE TO GAS.

8. • GAS BOOSTING COMPRESSOR: INITIAL GAS IS PASSES THROUGH GBC FOR
COMPRESSION TO THE REQUIRED INCREASE IN PRESSURE AND
TEMPERATURE.
• COOLING TOWER: WATER IS USED A COOLING MEDIUM AT VARIOUS STAGES IN
GAS BOOSTING CHAMBER SUCH AS LUBRICATION UNIT & BYPASS CHAMBER.
THERE WERE 3 COOLING TOWERS FOR THE PURPOSE WITH 4 FANS.

9. STEAM TURBINE
CONFIGURATION FOR STEAM TURBINE
 • THE TURBINE IS A SINGLE SHAFT MACHINE WITH SEPARATE HP-IP (COMBINED) AND LP PARTS.
 • THE INDIVIDUAL TURBINE ROTORS AND GENERATOR ROTOR ARE CONNECTED BY RIGID COUPLING.
 • THE HP-IP CYLINDER HAS A THROTTLE CONTROL GOVERNING.
TURBINE GOVERNING SYSTEM:
 • THE TURBINE HAS A HIGH PRESSURE ELECTROHYDRAULIC GOVERNING SYSTEM.
 • AN ELECTRIC SYSTEM MEASURES AND CONTROLS SPEED AND OUTPUT.
 • THE ELECTRIC SYSTEM OPERATES THE CONTROL VALVES IN THE ELECTROHYDRAULIC GOVERNING SYSTEM
PERMITS RUN-UP CONTROL OF TURBINE UP TO RATED SPEED AND KEEPS SPEED SWINGS.

10. Basic Components of gas turbine:
•Compressor
–Draws in air & compresses it
•Combustion Chamber
–Fuel pumped in and ignited to burn with compressed air
•Turbine
–Hot gases converted to work
–Can drive compressor & external load

11. GENERAL OVERVIEW
Note: A heat recovery steam generator (HRSG) is an energy recovery heat exchanger that recovers heat
from a hot gas stream. It produces steam that can be used in a process (cogeneration) or used to drive a
steam turbine (combined cycle).