atat

DATE OF TRAINING:DATE OF TRAINING: From 13From 13thth

 June,14 to 03 June,14 to 03thth

 July,14 July,14

VOCATIONAVOCATIONAL TRAINING PROJECT REPORT L TRAINING PROJECT REPORT ON MEJIA THERMAL POWER ON MEJIA THERMAL POWER STATIONSTATION

(M.T.P.S),DAM(M.T.P.S),DAMODAR ODAR VALLEY VALLEY CORPORATION(CORPORATION(D.V.C)D.V.C)

ABOUT M.T.P.SABOUT M.T.P.S

Mejia Thermal Power StationMejia Thermal Power Station is is located located at at Durlovpur, Durlovpur, Dist: Dist: Bankura, Bankura, 26 26 kmkm

fromfrom Durgapur Durgapur city incity in West Bengal. West Bengal. Commissioned on 1996, MTPS is the largest thermal Commissioned on 1996, MTPS is the largest thermal

power power plant, plant, in in terms terms of of electricity electricity generating generating capacity capacity in in the the state state of of West West Bengal Bengal asas

well as among other DVC power plantswell as among other DVC power plants..

Power Plant:Power Plant:

Mejia Thermal Power Station has an installed capacity of 2340 MW. The plant has 8 unitsMejia Thermal Power Station has an installed capacity of 2340 MW. The plant has 8 units

under its operation. The individual units have under its operation. The individual units have the generating capacities as follows:the generating capacities as follows:

Unit Unit No. No. Generating Generating Capacity Capacity Commissioned Commissioned onon

U#1 U#1 210 210 MW MW 19961996

U#2 U#2 210 210 MW MW 19981998

U#3 U#3 210 210 MW MW 19991999

U#4 U#4 210 210 MW MW 20052005

U#5 U#5 250 250 MW MW 20082008

U#6 U#6 250 250 MW MW 20092009

U#7 U#7 500 500 MW MW 20102010

U#8 U#8 500 500 MW MW 20102010

Units 1 to 6 are collectively named asUnits 1 to 6 are collectively named as MTPS-phase1MTPS-phase1, while the extension of Units 7 & 8 is, while the extension of Units 7 & 8 is

calledcalled MTPS-phase 2MTPS-phase 2. All the units have boilers, turbines and generators manufactured by. All the units have boilers, turbines and generators manufactured by

Bharat Heavy Electrical Limited (BHEL).Bharat Heavy Electrical Limited (BHEL).

 SUBJECT OF TRAINING SUBJECT OF TRAINING: THERMAL POWER STATION GENERATING TRAINING: THERMAL POWER STATION GENERATING TRAINING

PLACE OF TRAININGPLACE OF TRAINING::

DAMODAR VALLEY CORPORATIONDAMODAR VALLEY CORPORATION

Mejia Thermal Power StationMejia Thermal Power Station

P.O:MTPS,Dist:Bankura-722183,West BengalP.O:MTPS,Dist:Bankura-722183,West Bengal

Phone:03241-232201 FAX-03241-262231Phone:03241-232201 FAX-03241-262231

ENGINEERS UNDER WHOM TRAINING IS PERFORMED:ENGINEERS UNDER WHOM TRAINING IS PERFORMED:

1.1. Mr. Bidhayak DuttaMr. Bidhayak Dutta

(Deputy Chief Engg. Elec)(Deputy Chief Engg. Elec)

2.2. Mr. P.K DubeyMr. P.K Dubey

(Training Advisor)(Training Advisor)

DURATION OF TRAININGDURATION OF TRAINING: 13: 13THTH

JUNE,2014 to 03JUNE,2014 to 03THTH

 JULY,2014 JULY,2014

DAMODAR VALLEY CORPORATIONDAMODAR VALLEY CORPORATION

Mejia Thermal Power StationMejia Thermal Power Station

P.O:MTPS,Dist:Bankura-722183,West BengalP.O:MTPS,Dist:Bankura-722183,West Bengal

Phone:03241-232201 FAX-03241-262231Phone:03241-232201 FAX-03241-262231

No.MT/PL/Voc.Trg./Vol.XII/1682 Dated:29No.MT/PL/Voc.Trg./Vol.XII/1682 Dated:29thth March’2014March’2014

TO WHOM IT MAY CONCERNTO WHOM IT MAY CONCERN

This is to certify that Mr.Pravin Biswakarma, student of electrical engineeringThis is to certify that Mr.Pravin Biswakarma, student of electrical engineering

of Jalpaiguri Government Engineering of Jalpaiguri Government Engineering College, Jalpaiguri-735102(W.B)College, Jalpaiguri-735102(W.B)

undertook vocational training at Mejia Thermal Power undertook vocational training at Mejia Thermal Power Station, DVC, for theStation, DVC, for the

period of 21(Twenty One) days w.e.f 13.06.2014 under Electrical Dept., MTPS.period of 21(Twenty One) days w.e.f 13.06.2014 under Electrical Dept., MTPS.

During his training he has been found sincere, hard working andDuring his training he has been found sincere, hard working and

well disciplined.well disciplined.

..................................................................................

(Shri Bidhayak Dutta)(Shri Bidhayak Dutta)

The Dy Chief Engineer (Elect.)The Dy Chief Engineer (Elect.)

MTPS, DVCMTPS, DVC

 ACKNOWLEDGE ACKNOWLEDGEMENTMENT

Any project is the fruitful outcome of the Any project is the fruitful outcome of the hard work of many.hard work of many.

Through this document we would likeThrough this document we would like to express our gratitudeto express our gratitude

towards those who supported us in making us an outcome from us.towards those who supported us in making us an outcome from us.

Firstly, we would like to Firstly, we would like to thankthank Shri. Bidhayak duttaShri. Bidhayak dutta(Deputy Chief(Deputy Chief

Engg. Elec.). He inspite of Engg. Elec.). He inspite of his tremendous workload helped ushis tremendous workload helped us

admirably. Our humble thanks toadmirably. Our humble thanks to Shri.P.K DubeyShri.P.K Dubey(Training Advisor)(Training Advisor)

who guided us in each and every step till who guided us in each and every step till our completion of ourour completion of our

training. We are thankful to them for their continued guidance andtraining. We are thankful to them for their continued guidance and

support with support with their vast their vast pool of pool of knowledge, which knowledge, which was essential was essential forfor

the completion of this project. Along the way , the completion of this project. Along the way , we were also ablywe were also ably

supported and guided by staffs of supported and guided by staffs of the various departments. And likethe various departments. And like

we mentioned, the help is even we mentioned, the help is even more credible, considering that themore credible, considering that the

workload of the staff workload of the staff was immense.was immense.

We would also like to We would also like to thank our friends and family for providingthank our friends and family for providing

encouragement and moral support at every step. We encouragement and moral support at every step. We recogniserecognise

everybody’s helping hand.everybody’s helping hand.

CONTENTSCONTENTS

SLSL

NONOTOPICTOPIC

11 INTRODUCTION AND HISTORYINTRODUCTION AND HISTORY

22 OVERVIEW OF A POWER PLANTOVERVIEW OF A POWER PLANT

33 ELECTRICAL SYSTEMELECTRICAL SYSTEM

a) a) GENERATOR GENERATOR & & AUXILIRIESAUXILIRIES

1. BASIC PRINCIPLE & 1. BASIC PRINCIPLE & CONSTRUCTIOCONSTRUCTIONN

2. EXCITATION SYSTEM2. EXCITATION SYSTEM

3. AVR3. AVR

4. COOLING SYSTEM4. COOLING SYSTEM

5. PROTECTION SYSTEM5. PROTECTION SYSTEM

6. GENERATOR 6. GENERATOR METERING & INSTUMENTATIONMETERING & INSTUMENTATION

7. ELECTRICAL PROTECTION AND SAFETY INTERLOCKS7. ELECTRICAL PROTECTION AND SAFETY INTERLOCKS

b)b)OVERVIEW OVERVIEW OF OF GT, GT, UT, UT, UAT,UST, ST, UAT,UST, ST, SAT,SST, SAT,SST, NGT NGT 

c) SWITCHYARDc) SWITCHYARD

1.VARIOUS COMPONENTS1.VARIOUS COMPONENTS

2.PROTECTION2.PROTECTION

d) d) STATION STATION GROUNDING GROUNDING SYSTEMSYSTEM

e) MOTORSe) MOTORS

 f) f)

g)g)

DC SYSTEMDC SYSTEM

DG SETDG SET

INTRODUCTION & HISTORYINTRODUCTION & HISTORY

DVC, a legacy to the people of DVC, a legacy to the people of India, emerged as a culmination of attempts made over aIndia, emerged as a culmination of attempts made over a

whole century to control the wild and erratic Damodar river. The river whole century to control the wild and erratic Damodar river. The river spans over an areaspans over an area

of 25,000 kmof 25,000 km22 covering the states of Bihar (now Jharkhand) &  covering the states of Bihar (now Jharkhand) & West Bengal.West Bengal.

Damodar Valley Corporation was established on 7Damodar Valley Corporation was established on 7thth

 July 1948.It is one of  July 1948.It is one of the mostthe most

reputate company in treputate company in the eastern zone of Indihe eastern zone of India. DVC is establa. DVC is established on Damodar ished on Damodar river. Itriver. It

also consists of the Durgapur Thermal Power Plant in Durgapur. The hydel project inalso consists of the Durgapur Thermal Power Plant in Durgapur. The hydel project in

Mython is one of the most flourishing part of DVC. The Mython is one of the most flourishing part of DVC. The MTPS(Mejia Thermal PowerMTPS(Mejia Thermal Power

Station) under DVC is one of the largest thermal power plant in West Station) under DVC is one of the largest thermal power plant in West Bengal. It is one ofBengal. It is one of

the four thermal power stations of DVC in the states of West Bengal. The the four thermal power stations of DVC in the states of West Bengal. The total powertotal power

plant campus plant campus area is surrounded by boundarea is surrounded by boundary walls and is basary walls and is basically divided intically divided into twoo two

major parts, first power plant area itself and second is the colony area major parts, first power plant area itself and second is the colony area for the residencefor the residence

and other facilities for and other facilities for MTPS’s employees.MTPS’s employees.

SALIENT FEATURESSALIENT FEATURES

Location: Mejia in Bankura District in West Bengal.Location: Mejia in Bankura District in West Bengal.

Installed Capacity: (210*4 MW+250*2 MW + 500*2 Installed Capacity: (210*4 MW+250*2 MW + 500*2 MW)=2340MWMW)=2340MW

Coal source: B.C.C.L aCoal source: B.C.C.L and E.C.L, also imnd E.C.L, also imported from ported from IndonesiaIndonesia

Fuel quantity:126 TPH(for unit 1 to 4 only)Fuel quantity:126 TPH(for unit 1 to 4 only)

150 TPH(for unit 5 and 6 only)150 TPH(for unit 5 and 6 only)

272 TPH (for unit-7 only)272 TPH (for unit-7 only)

Height of chimney: 220m[205+15]Height of chimney: 220m[205+15](for unit 1 to 6)(for unit 1 to 6)

279m (for phase II)279m (for phase II)

Water source: DAMODAR RIVERWater source: DAMODAR RIVER

Beneficiary State: WEST BENGAL, Beneficiary State: WEST BENGAL, JHARKHANDJHARKHAND

OVERVIEW OF POWER PLANT OPERATIONOVERVIEW OF POWER PLANT OPERATION

A power plant is A power plant is basically an energy conversion mechanism. Thermal power plantsbasically an energy conversion mechanism. Thermal power plants

operate on modified Rankin Cycle with reheating and superheating. In essence , it isoperate on modified Rankin Cycle with reheating and superheating. In essence , it is

modified from of the basic steam cycle to increase the cycle efficiency. Coal is burnt in amodified from of the basic steam cycle to increase the cycle efficiency. Coal is burnt in a

boiler, which converts water into boiler, which converts water into steam. The steam is expanded in a steam. The steam is expanded in a turbine, whichturbine, which

produces mechanical power driving the alternator coupled to the turbine. The working ofproduces mechanical power driving the alternator coupled to the turbine. The working of

the power is divided into the power is divided into four main circuits:four main circuits:

Fuel and ash circuit.Fuel and ash circuit.

Air and Fuel gas circuit.Air and Fuel gas circuit.

Feed water and steam circuit.Feed water and steam circuit.

Cooling water circuit.Cooling water circuit.

THE ENERGY CONVERSIONTHE ENERGY CONVERSION

Chemical Chemical energy energy to to heat heat energy energy ---- ---- In In BoilerBoiler

Heat Heat energy energy to to kinetic kinetic energy energy ---- ---- In In TurbineTurbine

Mechanical Mechanical energy to energy to electrical electrical energy energy --- --- In GIn Generatorenerator

THERMAL POWER PLANTTHERMAL POWER PLANT

WATERWATER

FUELFUEL

AIRAIR

ELECTRICITYELECTRICITY

FLUE GASESFLUE GASES

ASHASH

ENERGY FLOW DIAGRAM OF DIFFERENT PART :ENERGY FLOW DIAGRAM OF DIFFERENT PART :

CHEMICAL CHEMICAL ENERGY ENERGY HEAT HEAT ENERGYENERGY

(COAL) (STEAM)(COAL) (STEAM)

BOILERBOILER

HEAT HEAT ENERGY ENERGY MECHANICAL MECHANICAL ENERGYENERGY

(STEAM) (TURBINE)(STEAM) (TURBINE)

TURBINETURBINE

MECHANICAL MECHANICAL ENERGY ENERGY ELECTRICAL ELECTRICAL ENERGYENERGY

(TURBINE) (GENERATOR)(TURBINE) (GENERATOR)

GENERATORGENERATOR

OVER VIEW OF A POWER PLANTOVER VIEW OF A POWER PLANT