23066542 ntpc training presentation

8/22/2019 23066542 NTPC Training Presentation

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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.


Thethermalradiationofthefireballheatsthewaterthatcirculatesthroughtheboilertubes

neartheboilerperimeter.

The water circulation rate in theboiler isthree to four times the throughput and is

typicallydrivenbypumps.


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SchematicDiagramofaSteamGeneratororBoiler


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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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23066542 ntpc training presentation

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