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Ntpc ppt for single student persentation

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Ntpc ppt for single student persentation

  1. 1. WELCOME
  2. 2. An Overview of KAHALGAON (2340MW) Presented By XXXX XXXXXX College NAme
  3. 3. INTRODUCTION In Thermal Power Station fuel burns & use the resultant to make the steam, which drives TURBO GENERATOR Water Fuel Burns Steam (Prime Mover) Turbine (Coupled with Generator)
  4. 4. The Coal based Thermal Power Plant can be divided in Three Parts COAL FLOW AIR FLOW WATER(STEAM) FLOW
  5. 5. COAL IS TRANSFERRED FROM COAL MINES TO POWER PLANT BY RAILWAY IN WAGONS CRUSHER HOUSE (CRUSHED TO 20mm) DEAD STORAGE (STORED FOR 40 DAYS COAL SUPPLY) PULVERISER(PULVARISED TO 200 mesh) BOILER (MIXED WITH HOT AIR AND BURNT)
  6. 6. STEAM(WATER) FLOW L H Economizer Reheater Evaporator _ H Describing the function of a Thermal Power plant
  7. 7. Some Important Components BOILER : The boiler is a rectangular furnace about 15m sides and 40m tall. Coal is burned inside the combustion chamber of boiler. DRUM: The temp is 540˚C and pressure is 150kg/sq.cm SUPERHEATER: After leaving the Boiler the steam is heated above its saturation temperature in Superheater. The temp is 540˚C and pressure is 150kg/sq.cm
  8. 8. REHEATER: Reheater is also steam boiler component in which heat is added to this intermediate-pressure steam. The temp is 540˚C and pressure is 35kg/sq.cm Condenser & Cooling Tower: It is used to condense the steam coming out of the Low pressure turbine Economizer: Function of Economizer is to recover some of the heat from the flue gas and utilizes it to heat the feed water to going to the Boiler
  9. 9. TURBO GENERATOR  A turbo generator is the combination of a turbine directly connected to an electric generator for the generation of electric power.  At NTPC Kahalgaon hydrogen-cooled turbo generator is installed. It is a turbo generator with gaseous hydrogen as a coolant Specification of 210MW unit(NTPC Kahalgaon) Apparent Power: 247000kVA Active Power : 210000kW Stator Voltage : 15750V Stator Current : 9065A Power Factor : 0.85 Frequency : 50Hz Speed : 3000rpm (3200rpm over speed)  Coolant : Hydrogen       
  10. 10. GENERATOR TRANSFORMER From the generator the electricity then goes to a transformer where the voltage is increased to about 420kV before sending it via cables SPECIFICATIONS (NTPC Kahalgaon) • • • • • • Type : Two Winding Maker : BHEL Rating : 250MVA Voltage Ratio: 15.47/420kV Frequency : 50Hz Vector Group : Yd
  11. 11. Other electric components used..  Circuit Breaker  Relay  Bus Bar  Isolators  Insulators  Lightning Arresters  Wave Trap  Instrument Transformer  Power Transformer
  12. 12. THANK YOU

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