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Kstps ppt

  1. 1. A SEMINAR PRESENTATION ON Kota SUPER thermal power station ELECTRICAL ENGINEERING VIVEKANANDA INSTITUTE OF TECHNOLOGY,JAIPUR Guided By :- Presented By :- Mrs. Meetu Nag Electrical Department Ajit Singh Rajawat VII th semester Electrical Branch
  2. 2. CONTENTS  1. REASON FOR CHOOSING KOTA FOR THERMAL PLANT SETUP  2. INTRODUCTION 3. DESIGN 4. LAYOUT OF THERMAL POWER PLANT 5. COAL HANDING PLANT 6. OVERVIEW OF COAL HANDLING PLANT 7.WAGON TRIPLER  7. CRUSHING SYSTEM  8. CONVEYING SYSTEM  9. DEARATOR 10. COLLING TOWER 11. CONDENSER 12. ECONOMISER 13. AIR PREHEATOR 14. SUPER HEATOR 15. REHEATOR 16. CONTROL PANEL 17. GENERATOR 18. TRANSFORMER 19.TURBINE 20.SWITCHYARD 21.BOILER 22.ASH HANDLING PLANT 23.ELECTRO STATIC PRECIPITATOR 24.CHIMNEY 25CONCLUSION
  3. 3. REASON FOR CHOOSING KOTA FOR THERMAL PLANT SETUP  Availability of large amount of clean cooling water required for the station.  Location of station on broad gauge main Delhi- Mumbai Railway line  Concentration of load in Kota city and Kota region.  Constant power supply.  Proximity to M.P. Coal fields.  Transmission and Grid substation are quite nearer to the site.
  4. 4. INTRODUCTION KSTPS is first coal based power plant in Rajasthan. It is located ideally on the left bank of CHAMBAL River at the upstream of KOTA BARRAGE. Its first unit of capacity 110 MW is synchronized on 17 jan 1983. It is one of highest power generating plant with installed capacity of 1240 MW.
  5. 5. DESIGN STAGES Stage V Stage I Unit 1 – 110 MW Unit 2 – 110 MW Stage II Unit 3 – 210 MW Unit 4 – 210 MW Unit 7 – 195 MW Stage III Unit 5 – 210 MW Stage IV Unit 6 – 195 MW 110 + 110 + 210 + 210 + 210 + 195 +195 = 1240 MW
  6. 6. Layout of thermal power plant
  7. 7. COAL HANDLING PLANT  Is called the HEART of thermal power plant because it provided the fuel for combustion in boiler.  The coal is brought to the KSTPS from BHARAT COAL LTD.DHANBAD SOUTH EASTERN COAL FIELD LTD.  BILASPUR(M.P.)  & There are 14 tracks for transportation.  Everyday 3- 4 trains of coal are unloaded, each train consists 58 wagons.  Coal is unloaded from wagons by means of WAGON TRIPPLER
  8. 8. OVERVIEW OF COAL HANDLING PLANT Row coal from Bharat coal ltd. Dhanbad & bilaspur(MP) To KSTPS from gurla via a single railway track Wagon Tripler Coal size reduced by 20 mm Bunkers Crusher house Hoppers Row coal feeders CONVEYING SYSTEM Coal mills (pulverization) BOILER FURNACE TANGENTIAL FIRING OF PULVERISED COAL
  9. 9. WAGON TRIPLER Unload the coal from wagon to hopper. Hopper allows to pass coal pieces ≤ 200mm From hopper coal fall on vibrator which is supported by roller.
  10. 10. CRUSHING SYSTEM  CRUSHER HOUSE:- Its main function to crush the coal to 20mm  Two types Primary crusher oRail crusher oRotary breaker Secondary crusher
  11. 11. CONVEYING SYSTEM Belt are used to convey coal from coal handling plant to furnace.   Specification:Belt width : 1400mm Speed : 2.2m/sec Total install power : 360kw Capacity : 1350/750 ton/hr No. of conveyor: 38
  12. 12. DEARATOR  A Dearator is a device that is widely used for the removal of air and other dissolved gases from the feed water to steam generating boilers.  Dearator is designed to remove oxygen down to levels of 7 ppm
  13. 13. COLLING TOWER  It converts hot water from into cold water.  Its purpose is to re use of the water.  Its increase the efficiency of plant.  It increase the per capital investment of plant.  In K.S.T.P.S. only unit 6th and 7th has cooling tower.
  14. 14. CONDENSER  To provide lowest economic heat rejection temperature for the steam. Thus saving on steam required per unit of electricity.  To convert exhaust steam to water for reuse thus saving on feed water requirement.
  15. 15. ECONOMISER Function-To extract some part of heat from flue gases & heat the feed water Process- Counter flow of flue gases & water Benefits- Increases efficiency
  16. 16. AIR PRI-HEATER Primary air Secondary air Air preheater Flue gas is a heat exchanger in which preheating of air done by transferring heat from the flue gas before supplying to the combustion chamber . For better combustion the air temp. 250 to 350 is always desired . The preheating of air results: 1.Improved combustion 2.Saving in fuel consumption 3.Thermal efficiency.
  17. 17. AIR PRI-HEATER(CONT.) Flue gas Primary air Secondary air
  18. 18. SUPERHEATER 1. Superheats are meant to raise the temp. of steam by absorbing heat from flue gases steam them. 2.Super heater eliminates the formulation of condensate during transporting of steam in pipelines and inside the early stages of turbine, which is harmful to the turbine blades and pipelines . 3. Superheated steam is led into the H.P. turbine through main steam stop valve.
  19. 19. REHEATER  Reheater are used to raise the temp of steam which has been expanded once in high pressure turbine. They used the heat absorbed from the flue gases.
  20. 20. CONTROL PANEL Steam pressure & control desk Turbine desk Fan control desk Fuel control desk Generator control desk
  21. 21. GENERATOR • An electrical generator is a machine which converts mechanical energy into electrical energy through electro mechanical energy conversion . • The generator is driven by directly coupled steam turbine at a speed of 3000 r.p.m. Mechanical power Electrical Energy
  22. 22. TRANSFORMER Transformer is a static device which step up or step down the voltage without change in frequency. There are various types of transformers used in kota super thermal power station.       Generating Transformer Unit Auxiliary Transformer (U.A.T.) Station Transformer (S.T.) Station Service Transformer (S.S.T) Unit Service Transformer (U.S.T.) Instrument Transformer (A) Potential Transformer (B) Current Transformer
  23. 23. TURBINE  Turbine is a machine in which a shaft is rotated steadily by impact or reaction of current or stream of working substance (steam ,air , water , gases etc.).  It convert the PE or KE of the working substance into mechanical power by virtue of dynamic action of working substance.
  24. 24. TURBINE(CONT.) BOILER & SUPERHEATER STEAM AT 545 C STEAM AT 535 C H P TURBINE REHEATER M P TURBINE STEAM AT 535 C STEAM AT 545 C L P TURBINE
  25. 25. SWITCHYARD The 220 KV Switch yard is the main part of the KTPS it has two buses arrangement with a bus coupled breaker. There are 11 feeders connected at 220 KV switchyard
  26. 26. MAIN PARTS OF SWITCHYARD            Bus Bar Bus Coupler Isolating switch Earthing Switch Lightning Arrester Current & Potential Transformer (CT&PT) Circuit Breaker Capacitive Voltage Transformer (CVT) Wave Trap Supporting Structures Power Transformer
  27. 27. BUS BAR  An electrical conductor, maintained at a specific voltage and capable of carrying a high current, usually used to make a common connection between several circuits in a system.  A group of such electrical conductors at a low voltage, used for carrying data in binary form between the various parts of a computer or its peripherals Sometimes shortened to bus.
  28. 28. BUS COUPLER  Bus coupler is a device which is used to switch from one bus to the other without any interruption in power supply and without creating hazardous arcs. It is achieved with the help of circuit breaker and isolators.  Bus couplers are used in distribution system to provide better isolation and protection from electrical arcs . They are used on Transformers to connect it to the distribution system . It has it advantage over direct coupling with respect to arc suppression as they provide greater impedance to the path of the load . So , they provide better arc protection especially, during the transient or switching period
  29. 29. ISOLATING SWITCH  A disconnector or isolator switch is used to make sure that an electrical circuit can be completely de-energised for service or maintenance.
  30. 30. LIGHTNING ARRESTER  A protective device for electrical equipment that reduces excessive voltage resulting from lightning to a safe level by grounding the discharge.  A device for preventing damage to radio, telephonic, or other electric equipment from lightning or other high-voltage currents.
  31. 31. CURRENT TRANSFORMER  When current in a circuit is too high to directly apply to measuring instruments, a current transformer produces a reduced current accurately proportional to the current in the circuit, which can be conveniently connected to measuring and recording instruments.  A current transformer also isolates the measuring instruments from what may be very high voltage in the monitored circuit.
  32. 32. POTENTIAL TRANSFORMER  Potential Transformer or Voltage Transformer are used in electrical power system for stepping down the system voltage to a safe value which can be fed to low ratings meters and relays. Commercially available relays and meters used for protection and metering, are designed for low voltage.
  33. 33. CIRCUIT BREAKER  A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.  Its basic function is to detect a fault condition and interrupt current flow. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation.
  34. 34. CAPACITIVE VOLTAGE TRANSFORMER  A capacitor voltage transformer (CVT), or capacitance coupled voltage transformer (CCVT) is a transformer used in power systems to step down extra high voltage signals and provide a low voltage signal, for measurement or to operate a protective relay.
  35. 35. WAVE TRAP  A notch filter, usually a simple LC circuit, is used to remove a specific interfering frequency.  This is a technique used with radio receivers that are so close to a transmitter that it swamps all other signals. The wave trap is used to remove, or greatly reduce, the signal from the local transmitter.
  36. 36. BOILER 1.The utility boilers are large capacity steam generators used for the electrical power generation. 2. In boiler heat energy is released from the combustion of fossils fuel and heat is transferred to different fluids in the system. 3. The boiler installed in K.S.T.P.S. are single drum, tangential fired water tube naturally circulated over hanged ,pulverizing coal firing with a max. Continuous steam output of 375 tons/hour at 138 kg/cm2 pressure and 5400C temperature.
  37. 37. BOILER (CONT.) stack DM water Boiler water tubes & various stages Super heated steam Flue gases Air from environment via draft fans Boiler furnace Ash handling plant Pulverized coal
  38. 38. ASH HANDLING PLANT  ELECTRO STATIC PRECIPITATOR (ESP).  Chimney.  Ash : Fly ash(80%) Used for making bricks, Cement.  Bottom ash (20%). Used to improve fertility , Roads.
  39. 39. ELECTROSTATIC PRECIPITATOR Used for the removal of suspended particles and fly ash from industrial flue gases  PRINCIPLE- Produces an electrostatic field which attracts the ionized carbon particles and other such particulates which cause environmental pollution. 39
  40. 40. CHIMNEY  A single chimney of 180 M height with two separate flues for the two unit each of 110 MW is provided.  Similarly another chimney with three separate flues is also provided for another three units of 210 MW each  Two chimney for the 6th & 7th unit of 195 MW is also constructed .
  41. 41. CONCLUSION  It was a knowledgeable experience while taking practical training at KOTA SUPER POWER THERMAL STATION .  It proved an opportunity for encounter with such huge machines like tippler ,turbine and generator. But there are few factors that require special mention.
  42. 42. THANK YOU
  43. 43. QUARRY?? QUESTION ANSWER

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