Combined cycle power project,dholpur

A

PRACTICAL TRAINING SEMINAR

ON

“DHOLPUR COMBINED CYCLE POWER PROJECT”

(01/06/2014 to 30/06/2014)

Submitted in Partial Fulfillment for the Award of

Bachelor of Technology Degree

Of

Rajasthan Technical University, Kota

SESSION:-2014-15

Submitted To: Submitted By:Mr. Brijraj Singh RAJESH KUMAR (Asst. Prof, EIC Department) 4th year (E.I.C)

DEPARTMENT OF ELECTRONIC INSTRUMENTATION & CONTROL ENGINEERING

POORNIMA COLLEGE OF ENGINEERING

Jaipur

Thursday, October 30, 2014 PCE/EIC/11/010 1

CONTENTS

BACKGROUND OF THE COMPANY

INTRODUCTION

WHY DHOLPUR IS CONSIDERED

HOW DOES A COMBINED CYCLE PLANT WORK ?

GAS TURBINE

HEAT RECOVERY STEAM GENERATOR

STEAM TURBINE

WHY USE THIS TECHNIQUE

CONCLUSTION

THANK YOU

QUERIES..??


BACKGROUND OF THE COMPANY

Setup- 2007 Location- 55 km. south west Of Agra,pachganv road,dholpur.Area- 143 BighaEstimated cost - Rs. 1100 Crores.Project Owner- Rajasthan Rajya Vidyut Utpadan Nigam Ltd.Planning Authority-Central Electricity Authority Engineering Design-Bharat Heavy Electricals Ltd.Fuel Supplier- ONGCFuel Transporter- GAIL


INTRODUCTION

DCCPP Is Generated 330 MW Electricity.

The Main Equipments Were Supplied By Bhel

The Power Plant Is Operated By The

Rajasthan Rajya Vidyut Utpadan Nigam Ltd.

The Main Fuel Used For This Plant Is Natural

Gas Which Will Be Supplied By Gail.

Less Pollution as thermal power plant.


WHY DHOLPUR IS CONSIDERED

AS IDEAL LOCATION FOR SETUP OF

GAS POWER PLANT?

• AVAILIBILITY OF LAND AND WATER

• TRANSMISSION NETWORK, PROXIMITY TO BROAD

GAUGE RAILWAY

• WELL CONNECTED BY ROADS (G.T. ROAD PASSES

THROUGH THIS CITY)

• AN IMPORTANT LOAD CENTER FOR EASTERN

RAJASTHAN.


UNITS CONFIGURATION

Totall Station Capacity 330MW.

TYPE OF TURBINE GENERATEGAS TURBINE -1 110MW

GAS TURBINE-2 110MW

STEAM TURBINE 110MW

TOTAL CAPACITY - 330 MW


7

How does a Combined Cycle

Plant Work?


GAS TURBINE

A gas turbine, also called a combustion

turbine, is a rotary engine that extracts energy

from a flow of hot gas Produced by combustion

of gas in a stream of compressed air.

Temp of GT is 1390deg-c(approx.).

In this shaft speed is 3000 rpm.

Gas turbine arranged on common shaft with

compressor and a generator.

Overall Efficiency of Gas turbine is 20%-40%.


9

Combustion Turbine Fuels

• Conventional Fuels– Natural Gas

– Liquid Fuel Oil

• Nonconventional Fuels– Crude Oil

– Refinery Gas

– Propane

• Synthetic Fuels– Chemical Process

– Physical ProcessThursday, October 30, 2014 PCE/EIC/11/010 9

Types Of Gas Turbine Plants

• Simple Cycle

– Operate When Demand is High

– Operate for Short / Variable Times

– Designed for Quick Start-Up

– Not designed to be Efficient(max~44%) but Reliable

• Combined Cycle

– Operate for Peak and Economic Dispatch

– Designed for Quick Start-Up

– Designed to Efficient(~60%), Cost-Effective Operation

– Typically Has Ability to Operate in SC ModeThursday, October 30, 2014 PCE/EIC/11/010 10

GAS TURBINE - A HEAT ENGINE

Air Intake System.

Compressor.

Combustion Chamber.

Turbine.

Generator.


12

Typical Plant Components

Oil System Generator

Fire ProtectionStarting Engine


Energy Efficiency of the Gas Turbine

Combined Cycle Power Generation System


WASTE HEAT RECOVERY

STEAM GENERATOR It is a heat exchanger that recovers

heat from a hot gas stream.

There are two boiler drums in WHRSG.

Water comes in economizer and temperature of water increased.

Water supplied to boiler drum then evaporator in this water is converted into steam.

Steam pass through super heaters.

Dry steam is supplied to boiler drum. Then steam turbine.


STEAM TURBINE

In Steam Turbine shaft is rotated steadily

by impact reaction of steam as working

substances on blades of turbine.

It converts potential energy or heat energy

into mechanical energy.

It works on Rankine Cycle.

Steam turbine is started by burnt exhaust

gases coming out from gas turbine.


WORKING OF STEAM TURBINE

BOILER STEAMTRBINE

WATER

AIR

FUEL

STEAM

WASTE

GASES

MECHANICAL

ENERGY

ELECTRICAL

ENERGY

BUS BARS

ALTERNATOR

EXHAUST

STEAM


Steam generating plant

1) Air Preheater:

Increases the temperature of the

air supplied for Fuel burning by

deriving heat from flue gases.

Air is drawn from the atm by

a forced drought fan and is

passed through air preheater

before supplying to the boiler furnace.


Steam Generating Plant

2) Economiser:It’s essentially a feed water heater and derives heat from the flue gases



3) Boiler: The heat of combustion in the boiler is utilized to convert water into steam at high temperature and pressure



4) Superheater:

The steam produced

in boiler is wet and

is passed through

a superheater where

it is dried and

superheated.

Increases efficiency


5) Alternator:

• Steam turbine is coupled to an alternator which converts the mechanical energy to electrical energy

• The electrical output of the alternator is delivered to the bus bars through transformer, circuit breakers and isolators.



STEAM TURBINE

STEAM TURBINE

MECHANICAL ENERGY

GENERATOR

ELECTRICAL ENERGY

For 110 MW UNIT

Rated o/p - 110MW

Economic o/p - 95MW

Rotation Speed –3000rpm

Rotation - CW


HIGH EFFICIENCY

LOW COOLING WATER REQUIREMENT

FAST START

LOW ENVIRONMENT POLLUTION

LOW COSTS


• A Practical training for a period of 30 days provided me with depth knowledge about combined cycle power plant and how to Power Generation.

• Power Generation Plant are very Economical.

• The Present Installed Capacity Of Dholpur

Combined Cycle Power Plant is 330MW.


