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At:-
NTPCLimited
BadarpurThermalPowerStation
Badarpur,NewDelhi
Lovely ProfessionalUniversity
SIX WEEKS INDUSTRIAL TRAINING
THERMAL POWER PLANT
OVERVIEW
ABHIMANYU PURI
11000502
B.tech-Mba(ME.)
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ABOUTNTPCLIMITED
Formally known as National Thermal
PowerCorporationLimited.
Itisamongtheworldslargestandmost
efficientpowergenerationcompanies.
In Forbes list of Worlds 500 Largest
Companies for the year 2007, NTPCoccupies411thplace.
NTPC has installed capacity of 29,394
MW.
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ABOUTNTPCLIMITEDItas
15coalbasedpowerstations(23,395
MW),
7 gas based power stations (3,955MW)and
4 power stations in JointVentures
(1,794MW).
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PowerPlant(alsoreferredtoasGenerating
Station or Power Station) is an industrial
facilityforthegenerationofelectricpower.
ABOUTPOWERPLANT
At Power Plants, generators are used as
rotating machine that converts mechanical
energy into electrical energy by creating
relativemotionbetweenamagneticfieldandaconductor.
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ABOUTBADARPURTHERMALPOWERSTATIONThe BadarpurThermal PowerStation has five
unitsof Steam
Turbine-Driven
Generators,whichhasatotal
capacityof
705MW.
A top view of Badarpur
Thermal Power Station,
Badarpur, NewDelhi
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Sr.No.
1.
2.
Capacity
210MW
95MW
No.ofGenerators
2
3
Total
TotalCapacity
420MW
285MW
705MW
ABOUTBADARPURTHERMALPOWERSTATIONThefuelbeingusedisCoal,whichissupplied
fromtheJhariaCoalFieldinJharkhand.
WatersupplyisgivenfromtheAgraCanal.
Table: Capacity of Badarpur Thermal Power Station, New Delhi
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THERMALPOWERPLANTInaThermalPowerPlant,oneofcoal,oilor
natural gas is used to heat the boiler to
convertthewaterintosteam.
Thesteamisusedtoturnaturbine,whichis
connectedtoagenerator.
When the turbine turns, electricity isgenerated and given as output by the
generator, which goes to the high tension
transformer then supplied to the consumers
throughhigh-voltagepowerlines.
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THERMALPOWERPLANT
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OPERATIONOFCOAL--FIREDPOWERPLANT
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Therearebasicallythreemainunitsof
athermalpowerplant:
THERMALPOWERPLANT
1. SteamGeneratororBoiler
2. SteamTurbine
3. ElectricGenerator
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Aboilerorsteamgeneratorisadeviceused
to create steamby applying heat energy to
water.
STEAMGENERATORORBOILER
Itisarectangularfurnaceabout50ft(15m)
onasideand130ft(40m)tall.
Itswallsaremadeofawebofhighpressuresteel tubes about 2.3 inches (60 mm) in
diameter.
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Pulverizedcoalisair-blownintothefurnacefromfuelnozzlesatthefourcornersanditrapidlyburns,formingalargefireballatthe
center.
STEAMGENERATORORBOILER
Thethermalradiationofthefireballheatsthewaterthatcirculatesthroughtheboilertubes
neartheboilerperimeter.
The water circulation rate in theboiler isthree to four times the throughput and is
typicallydrivenbypumps.
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STEAMGENERATORORBOILER
SchematicDiagramofaSteamGeneratororBoiler
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STEAMGENERATORORBOILER
Asthewaterintheboilercirculatesitabsorbsheat and changes into steam at 700F o370C.
Itisseparatedfromthewaterinsideadrumatthetopofthefurnace.
The saturated steam is introduced intosuperheatpendanttubes.
Herethesteamissuperheatedto1,000For540Ctoprepareitfortheturbine.
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STEAMTURBINESteam turbines are used to drive thegenerators,whichproduceelectricity.
The turbines are driven by steam
generated in 'Boilers' or 'SteamGenerators.
Energy in the steam after it leaves theboilerisconvertedintorotationalenergyasitpassesthroughtheturbine.
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STEAMTURBINEThe turbine normally consists of threestages with each stage consisting of astationary blade (or nozzle) and arotatingblade.
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STEAMTURBINEStationaryblades convert thepotentialenergy of the steam (temperature andpressure) into kinetic energy (velocity)and direct the flow onto the rotating
blades.
The rotatingblades convert the kinetic
energy into forces, causedbypressuredrop,whichresultsintherotationoftheturbineshaft.
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STEAMTURBINEThe turbine shaft is connected to agenerator,whichproducestheelectricalenergy.
Therotationalspeedis3000rpm.
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TURBINEGENERATORThe generators are used to convertmechanicalpower, delivered from theshaft of the turbine, into electricalpower.
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TURBINEGENERATORThemechanicalenergyfromtheturbineisconvertedbymeansa
rotatingmagneticfield
producedbydirectcurrentinthecopperwindingoftherotororfield,
which generates three-phase alternating currentsandvoltagesinthecopperwindingofthestator(armature).
The stator winding is connected toterminals,whichareinturnconnectedtothepower system for delivery of theoutputpowertothesystem.
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TURBINEGENERATORAtBadarpurThermalPowerStation,
2-pole,
3000rpm,
50Hzgeneratorsareused
of capacities 210 MW and95MW.
A95MWTurbine
Generatorat
BadarpurThermal
PowerStation,
ewDelhi
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TRANSFORMERS
Step-UptheVoltagefrom
10.5kVto220kVfor95MWGenerators.
15.75kVto220kVfor210MWGenerators.
220kV output is transmitted to theswitchyardforfurthertransmission.
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COALHANDLINGDIVISIONTheprocessingofcoalbeforeitisfiredto the furnace, comes under the coalhandlingdivisionofthepowerplant.
The Coal Handling Division of BTPShasthefollowingparts:
RailwayWagonTripler
Conveyor
CoalStorageGround
Separator
PulverizerorBowlMill
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COALHANDLINGDIVISION
RailwayWagonTripler Conveyor
CoalStorageGround Separator
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COALHANDLINGDIVISIONPulverizersareusedtocrushitintofinepoweredparticles.
Pulverizer
FiredtotheBoilerFurnaceforcombustion
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THANKYOUANYQUERY??