1. By : VAIBHAV KUMAR IV YEAR, VII SEM ELECTRICAL ENGINEERING

2. INTRODUCTION OF CAPTIVE THERMAL POWER PLANT

3. *GENERATING POWER*  The power output of generator is 30 MW at 11 KV.  This plant has only one unit of 30 Mw.  It import electricity during maintenance.

4. *BASIC COMPONENT* Generator Steam Turbine Boiler Electrostatic Precipitator Power X-mer Cooling Tower Switch Yard

5. *ALTERNATOR* Alternator is directly coupled with turbine and it convert mechanical energy into electrical energy. In this plant water cool alternator is used for generating electricity. Excitation system of alternator is brushless. ALTERNATOR SPECIFICATION FOR 30MW. 11KV, 37.5MVA, 50Hz, 1500RPM, CONNECTION-Y, PHASE-3, PF-0.8.

6. * WATER COOL ALTERNATOR*

7. *STEAM TURBINE*  With the use of boiler and then Steam Turbine makes the plant efficiency better.  The Steam Turbine comprises of one High Pressure Turbine and one Low Pressure Turbine.

9. *BOILER* Water tube boiler is used in this plant. Steam pressure at inlet is 102 kg/cm² & steam temp. at inlet is 535˚C. In this boiler, water is flow in the tube in furnace. Steam produces in tube & it collect in a drum which is situated on the top of boiler. Then steam goes to turbine.

11. *ELECTROSTATIC PRECIPITATOR* Electrostatic precipitator is consists of a large number of collecting electrodes. In it dust particles are charged and stick to the electrodes, hammer hit electrode and dust fall down. Dust is collect in base of ESP. Then dust is removed by air HOPPER. Transparent smoke find out in chimney.

13. *POWER TRANSFORMER* To step-up or step-down the voltage and transfer power from one a.c. voltage to another a.c. voltage at the same frequency. TRANSFORMER SPECIFICATION : 37.5MVA, 11/132KV, 50Hz, phases -3, oil quantity-21725 ltr, cooling – ONAN:ONAF.

15. *COOLING TOWER* There are X–flow method is used for cooling the circulating water.

16. *SWITCH YARD* Basic Component Of Switch Yard: 1. Isolator. 2. Current x-mer. 3. Potential x-mer. 4. Circuit breaker. 5. Lightning arrester.

17. * ISOLATOR * These are used to disconnection transmission line under no-load condition for safety, isolation and maintenance.

18. * CURRENT TRANSFORMER* These are used to step-down currents for measurement, control & protection.

19. *POTENTIAL TRANFORMER* These are used to step-down voltage for measurement.

20. * CIRCUIT BREAKER * These are used for automatic switching during normal or abnormal conditions. There are sf6 circuit breaker is used.

21. * LIGHTING ARRESTERS * These are used to discharge lightning over voltages and switching over voltages to earth.

22. THANK YOU ALL

23. QUERIES