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A PRESENTATION
OF
VOCATIONAL TRAINING ON
COMBINED CYCLE POWER PLANT
PRESENTED BY:-
ARIJIT ROY
VIVEKANANDA GLOBAL UNIVERSITY
DIPLOMA 5TH SEM, ELECTRICAL DEPTT.
ROLL NO:- 14TEC1EE300
CONTENTS
• INTRODUCTION
• OVERVIEW OF PLANT
• FLOW DIAGRAM OF CCP
• BRAYTON CYCLE
• RANKINE CYCLE
• BASIC CONCEPTS OF ENERGY CONVERSTION
• CONVENTIONAL POWER STATION
• WAYS TO INCREASE BRAYTON CYCLE EFFICIENCY
• WAYS TO INCREASE RANKINE CYCLE EFFICIENCY
• CONFIGURATION CCGT POWER PLANT
• COMPONENT USED IN POWER PLANT
• CONFIGURATION OF STEAM TURBINE
• DM WATER PLANT
INTRODUCTION
 One of the largest Country-based Gas & Steam exploration and
production company
 Produces around 72% of North Eastern state's Electricity.
 The OTPC CCGT Power plant is 726.6 MW power plant having 2 units
(2×363.3)= 2(232.39+130.91)
(GAS+STEAM)
OTPC TRIPURA ASSET, PALATANA, TRIPURA
 Tripura is one of the main work centers of ONGC in North-
eastern region.
 On the based of ONGC newly planted OTPC is now larger
production of Electricity of 726.6 MW
 It is based at PALATANA, UDAIPUR with man power of little
more than 600.
COMBINE CYCLE
POWER PLANT
OVERVIEW: THERMAL POWER PLANT
COMBINE CYCLE POWER PLANT (CCPP)
Natural Gas - More versatile than coal & oil
- Can be used in 90% of energy applications
Electricity
COMBINED CYCLE GAS TURBINE:
• THE COMBINED CYCLE CONSISTS OF THE FOLLOWING TWO
CYCLES:
 BRAYTON CYCLE
 RANKINE CYCLE
BASIC CONCEPTS
• CHEMICAL ENERGY STORED IN FOSSIL FUELS SUCH AS COAL,
FUEL OIL OR NATURAL GAS IS CONVERTED SUCCESSIVELY INTO
THERMAL ENERGY
MECHANICAL ENERGY
ELECTRICAL ENERGY
• THE SIMPLE WORD EQUATION FOR THIS CHEMICAL REACTION
IS:
 FUEL + OXYGEN = HEAT + CARBON DI OXIDE + WATER
CONVENTIONAL POWER STATION
GAS
TURBINE COMPRESSOR
CC 1
GAS
GAS
AIR FROM
ATMOSPHERE
DRIVE
CC 2
BYPASS
STACK 2
BYPASS
STACK 1
HRSG 1
PUMP
STEAM
TURBINE
HRSG 2
CONDENSERCOOLING
WATER
GT
GEN
ST
GEN
SCHEME OF TYPICAL POWER PLANT - COMBINED CYCLE
BRAYTON CYCLE
• THE IDEAL BRAYTON CYCLE CONSISTS OF FOUR INTERNAL
REVERSIBLE PROCESS:
1-2: ISENTROPIC COMPRESSION ( IN COMPRESSOR)
2-3: CONSTANT PRESSURE HEAT ADDITION
3-4: ISENTROPIC EXPANSION ( IN TURBINE)
4-1: CONSTANT PRESSURE HEAT REJECTION
TO INCREASE THE BRAYTON CYCLE
EFFICIENCY
• THE BRAYTON CYCLE WITH REGENERATION OR
RECUPERATOR.
• INTERCOOLING.
• RE-HEATING
• INTERCOOLING, RE-HEATING & REGENERATION
RANKINE CYCLE
• IDEAL CYCLE FOR VAPOUR PLANTS WITH NO
IRREVERSIBILITIES & CONSISTS OF THE FOUR PROCESS:
1-2: ISENTROPIC COMPRESSION IN PUMP.
2-3: CONSTANT PRESSURE HEAT ADDITION IN BOILER.
3-4: ISENTROPIC EXPANSION IN TURBINE.
4-1: CONSTANT PRESSURE HEAT REJECTION IN
CONDENSER.
TO INCREASE THE RANKINE CYCLE
EFFICIENCY
• LOWERING THE CONDENSER PRESSURE.
• SUPER-HEATING THE STEAM TO HIGH TEMPERATURE.
• INCREASING THE BOILER PRESSURE.
CONFIGURATION OF CCGT PLANT
 THE COMBINED-CYCLE SYSTEM INCLUDES SINGLE-SHAFT &
MULTI-SHAFT CONFIGURATIONS.
 THE SINGLE SHAFT SYSTEM CONSIST OF ONE GAS TURBINE , ONE STEAM
TURBINE, ONE GENERATOR & ONE HEAT RECOVERY STEAM GENERATOR
(HRSG).
KEY ADVANTAGES OF SINGLE-SHAFT ARRANGEMENTS:
OPERATING SIMPLICITY, SMALLER FOOTPRINT, LOWER START-UP COST.
MULTI –SHAFT SYSTEM HAVE ONE OR MORE GAS TURBINE-GENERATORS &
HRSG’S THAT SUPPLY STEAM THROUGH A COMMON HEADER TO A SEPARATE
SINGLE STEAM TURBINE- GENETRATOR.
IN TERMS OF OVERALL INVESTMENT A MULTI-SHAFT SYSTEM IS ABOUT 5%
HIGHER IN COST.
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.
• 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.
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.
D.M. WATER PLANT
• D.M STANDS FOR DE-MINERALIZATION OF WATER.
1. TURBIDITY OF WATER IS REMOVED.
2. REMOVES BACTERIA & OTHER MICROBES.
3. NEUTRALIZES THE BASES & CONVERTS IT INTO
CORRESPONDING ACIDS.
4. REMOVES THE ACIDIC IONS PRESENT IN THE WATER.
5. THE FINAL STAGE, BALANCED REMOVAL OF IONS
TAKES PLACE USING A MIXED BED.
arijit summer training

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arijit summer training

  • 1. A PRESENTATION OF VOCATIONAL TRAINING ON COMBINED CYCLE POWER PLANT PRESENTED BY:- ARIJIT ROY VIVEKANANDA GLOBAL UNIVERSITY DIPLOMA 5TH SEM, ELECTRICAL DEPTT. ROLL NO:- 14TEC1EE300
  • 2. CONTENTS • INTRODUCTION • OVERVIEW OF PLANT • FLOW DIAGRAM OF CCP • BRAYTON CYCLE • RANKINE CYCLE • BASIC CONCEPTS OF ENERGY CONVERSTION • CONVENTIONAL POWER STATION • WAYS TO INCREASE BRAYTON CYCLE EFFICIENCY • WAYS TO INCREASE RANKINE CYCLE EFFICIENCY • CONFIGURATION CCGT POWER PLANT • COMPONENT USED IN POWER PLANT • CONFIGURATION OF STEAM TURBINE • DM WATER PLANT
  • 3. INTRODUCTION  One of the largest Country-based Gas & Steam exploration and production company  Produces around 72% of North Eastern state's Electricity.  The OTPC CCGT Power plant is 726.6 MW power plant having 2 units (2×363.3)= 2(232.39+130.91) (GAS+STEAM)
  • 4. OTPC TRIPURA ASSET, PALATANA, TRIPURA  Tripura is one of the main work centers of ONGC in North- eastern region.  On the based of ONGC newly planted OTPC is now larger production of Electricity of 726.6 MW  It is based at PALATANA, UDAIPUR with man power of little more than 600.
  • 7. COMBINE CYCLE POWER PLANT (CCPP) Natural Gas - More versatile than coal & oil - Can be used in 90% of energy applications Electricity
  • 8. COMBINED CYCLE GAS TURBINE: • THE COMBINED CYCLE CONSISTS OF THE FOLLOWING TWO CYCLES:  BRAYTON CYCLE  RANKINE CYCLE
  • 9. BASIC CONCEPTS • CHEMICAL ENERGY STORED IN FOSSIL FUELS SUCH AS COAL, FUEL OIL OR NATURAL GAS IS CONVERTED SUCCESSIVELY INTO THERMAL ENERGY MECHANICAL ENERGY ELECTRICAL ENERGY • THE SIMPLE WORD EQUATION FOR THIS CHEMICAL REACTION IS:  FUEL + OXYGEN = HEAT + CARBON DI OXIDE + WATER
  • 11. GAS TURBINE COMPRESSOR CC 1 GAS GAS AIR FROM ATMOSPHERE DRIVE CC 2 BYPASS STACK 2 BYPASS STACK 1 HRSG 1 PUMP STEAM TURBINE HRSG 2 CONDENSERCOOLING WATER GT GEN ST GEN SCHEME OF TYPICAL POWER PLANT - COMBINED CYCLE
  • 12. BRAYTON CYCLE • THE IDEAL BRAYTON CYCLE CONSISTS OF FOUR INTERNAL REVERSIBLE PROCESS: 1-2: ISENTROPIC COMPRESSION ( IN COMPRESSOR) 2-3: CONSTANT PRESSURE HEAT ADDITION 3-4: ISENTROPIC EXPANSION ( IN TURBINE) 4-1: CONSTANT PRESSURE HEAT REJECTION
  • 13. TO INCREASE THE BRAYTON CYCLE EFFICIENCY • THE BRAYTON CYCLE WITH REGENERATION OR RECUPERATOR. • INTERCOOLING. • RE-HEATING • INTERCOOLING, RE-HEATING & REGENERATION
  • 14. RANKINE CYCLE • IDEAL CYCLE FOR VAPOUR PLANTS WITH NO IRREVERSIBILITIES & CONSISTS OF THE FOUR PROCESS: 1-2: ISENTROPIC COMPRESSION IN PUMP. 2-3: CONSTANT PRESSURE HEAT ADDITION IN BOILER. 3-4: ISENTROPIC EXPANSION IN TURBINE. 4-1: CONSTANT PRESSURE HEAT REJECTION IN CONDENSER.
  • 15. TO INCREASE THE RANKINE CYCLE EFFICIENCY • LOWERING THE CONDENSER PRESSURE. • SUPER-HEATING THE STEAM TO HIGH TEMPERATURE. • INCREASING THE BOILER PRESSURE.
  • 16. CONFIGURATION OF CCGT PLANT  THE COMBINED-CYCLE SYSTEM INCLUDES SINGLE-SHAFT & MULTI-SHAFT CONFIGURATIONS.  THE SINGLE SHAFT SYSTEM CONSIST OF ONE GAS TURBINE , ONE STEAM TURBINE, ONE GENERATOR & ONE HEAT RECOVERY STEAM GENERATOR (HRSG). KEY ADVANTAGES OF SINGLE-SHAFT ARRANGEMENTS: OPERATING SIMPLICITY, SMALLER FOOTPRINT, LOWER START-UP COST. MULTI –SHAFT SYSTEM HAVE ONE OR MORE GAS TURBINE-GENERATORS & HRSG’S THAT SUPPLY STEAM THROUGH A COMMON HEADER TO A SEPARATE SINGLE STEAM TURBINE- GENETRATOR. IN TERMS OF OVERALL INVESTMENT A MULTI-SHAFT SYSTEM IS ABOUT 5% HIGHER IN COST.
  • 17. 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. • 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.
  • 18. 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.
  • 19. D.M. WATER PLANT • D.M STANDS FOR DE-MINERALIZATION OF WATER. 1. TURBIDITY OF WATER IS REMOVED. 2. REMOVES BACTERIA & OTHER MICROBES. 3. NEUTRALIZES THE BASES & CONVERTS IT INTO CORRESPONDING ACIDS. 4. REMOVES THE ACIDIC IONS PRESENT IN THE WATER. 5. THE FINAL STAGE, BALANCED REMOVAL OF IONS TAKES PLACE USING A MIXED BED.

Editor's Notes

  1. - Fuel is burned in the gas turbine - The resulting energy in the gas turbine turns the generator drive shaft - Exhaust heat from the gas turbine is sent to a heat recovery steam generator (HRSG) - The HRSG turns the gas turbine exhaust heat into steam and feeds it to the steam turbine - The steam turbine delivers additional energy to the generator drive shaft - The generator converts the energy into electricity