A PRESENTATION ON VOCATIONAL TRAINING AT –

NTPC UNCHAHAR

P

PRESENTENTED BY

AMIT KUMAR

ABOUT NTPC• NTPC is the largest power generating company in india,

was set up in 1975 to accelerate power development in the country.

• NTPC has installed capacity of (47228 MW).

• NTPC has 18 coal based power stations (35085 MW).

• NTPC has 7 gas based power stations (4077 MW).

• NTPC has 7 power stations in joint ventures (6966 MW).

NTPC has 9 Solar based Power stations(360MW).

• In 2010 , Government of india granted NTPC status of ‘MAHARATNA’.

ABOUT NTPC, UNCHAHAR• It has energy generating capacity by – -coal based thermal plant is 1050 MW .

• It has 3 stages consisting 5 units of coal based thermal plant .

-stage 1 –unit 1 and unit 2(2 x 210MW) -stage 2-unit 3 and unit 4(2 x 210MW). -stage 3 –unit 5 (210MW).• It’s 6th unit is under construction (500MW).

DIFFERENT PHASES OF TRAININGSWITCHYARDMAIN PLANT GENERATOR BOILER TURBINEELECTROSTATIC PRECIPITATORCOAL HANDLING PLANT

DIFFERENT COMPONENT IN SWITCHYARD CIRCUIT BREAKER

IT IS USED TO BREAK OR MAKE THE CURRENRT

TYPE OF CIRCUIT BREAKER SF6

LIGHTINING ARRESTOR IT IS USED TO PROTECT OUR EQUIPMENT FROM

LIGHTINING SURGES MADE UP OF ZNO

AIR BREAK SWITCH

IT IS USED TO GROUND THE CIRCUIT AND TO DISCHARGE CB WHEN IT IS OFF

VOLTAGE RATING 245KV CURRENT 10 KA

CAPACITIVE VOLTAGE TRANSFORMER

USED FOR METERING AND PROTECTION REACTER ARE CONNECTED IN SERIES

WAVE TRAP IT IS USED TO TRAP FREQUENCY ABOVE 50 HZ

CURRENT TRANSFORMERUSED FOR MEASUREMENT OF CURRENT AND PROTECTION OF

EQUIPMENTTURNS RATIO 800/1

ISOLATORSWITCH THAT CAN MAKE OR BREAK CIRCUIT BUT DO NOT

REQUIRE ANY POST CONDITION

TURBO GENERATOR

EXCITATION SYSTEM

STATIC EXCITATION SYSTEM -UNIT 1 AND 2 HAVE THIS ARRANGEMENT WHICH USES SLIP RING AND BRUSHES

BRUSHLESS EXCITATION SYSTEM- UNIT 3 4 AND 5 HAVE THIS SYSTEM

IT CONTAIN 2 EXCITOR ONE IS MAIN EXCITOR AND OTHER IS PILOT EXCITOR

TRANSFORMER CONVERT ELECTRICAL ENERGY FROM ONE CIRCUIT TO

ANOTHER HIGH EFFICIENCY RATING 250 MVA

ACCESSORIES OF TRANSFORMER

CONSERVATOR BREATHER BUCHCHOLTZ RELAY TEMPERATURE INDICATOR

STATION TRANSFORMER RATING 40 MVA USED FOR DEVICE OF OUR PLANT

BOILER IT IS A PLACE WHERE WATER IS CONVERTED TO STEAM STEAM GOES UP AND COLLECTED IN BOILER DRUM IT THEN GO TO TURBINE TO ROTATE ITS BLADE AND CONVERT

HEAT ENERGY TO ELECTRICAL ENERGY FD AND PA FAN HELP IN THIS PROCESS

ELECTROSTIC PRECIPITATOR USED TO PRECIPITATE THE DUST FROM FLUE GASFLUE GAS IS PASSED THROUGH DISCHARGE ELECTRODE

(EMITTING) TO COLLECTING ELECTRODE . DUE TO CORONA ELECTRODE IS IONISED AND ATTRACTED DUST

PARTICLE AND GET ACCUMULATED ON ITA SYN MOTOR IS ATTACHED TO ELLIMINATE THE DUST PARTICLE

COAL HANDLING PLANT

TOTAL AREA 200ACRECONVEYER LENGTH 13 KM TOTAL COAL CONSUMED IN 24 HRS- 12000MTPURPOSE IS TO CONVEY COAL TO BUNKER IN SIZE NOT

MORE THAN 20 MMAVERAGE COST IS RS 5/KGFIRSTLY COAL FROM WAGON GET ACCUMULATED IN

TRACK HOPPER SIZE IS 300 MMPRIMARY CRUSHER CONVERT FROM 300 MM TO 150

MM. USES OF 170KW 6.6 KV MOTORSECONDARY CRUSHER CONVERT SIZE INTO 20 MM.

USES OF 700 KW MOTOR IS USED

.

COAL THEN PASSED THROGH METAL DETECTOR TO REMOVE

FEROUS PARTICLE

THEN ACCORDING TO OUR NEED WE STORE SOME COAL IN

STACKER AND SEND REMAINING PART TO MILL WHICH CONVERT

COAL IN PODERED FORM AND SEND TO BOILER

.

THANK YOU