INDRAPRASTHA POWER GENERATION COMPANY LTD.

& PRAGATI POWER CORPORATION LTD

- Presented By

Content • About the company• Gas turbine• Steam turbine• HRSG• Transmission system

About The CompanyCONFIGURATION ( Pragati Power Station

– 1)

Gas Turbines 2 x104 mw (open cycle) + Steam Turbine of 1 x 122mw (combined cycle) = 330 mw(total)Constructed on ash filled area of 17 acres

Sewage treated water from stps being used – no water from river yamuna is used. The main function of IPGCL is generation of electricity and its total installed capacity is 735.0 mw including pragati power station

STATION Rajghat Power House

I.P. Gas Turbine Power Station

Pragati-I Combined Cycle Gas Power Station

Pragati-III Combined Cycle Gas Power Project, Bawana

Capacity (MW) 135 270 330 1500

Units (MW) 2x67.5

6 x 30 (GTs)+

3 x 30 (STGs)

2 x 104 (GT*s)+

1 x 122 (STG*)

4 x 250 (GTs)+

2 x 250 (STGs)

Commissioning 1989-90

1985-86 (GTs)

+1995-96 (STGs)

2002-03

Synchronized on –GT-1: 11th Oct.,

2010GT-2: 09th Feb.,

2011STG-1: 03rd Oct.,

2011

Water River Yamuna

River Yamuna

Treated water From Sen Nursing

Home & Delhi Gate STPs

Treated water From Rithala STP*

(GTs : Gas turbines ; STG : Steam Gas Turbine ; STP : Sewage Treatment Plant )

GAS TURBINE INTRODUCTION

A gas turbine is a rotary machine, which consists of three main components:1. compressor 2. combustion chamber3. turbine

The air after being compressed into the compressor is heated either by directly burns fuel in it or by burning fuel externally in a heat exchanger. The heated air with or without products of combustion is expanded in a turbine resulting in work output, a substantial part, about two-thirds, of which is used to drive the compressor. The rest, about one-third is available as useful work output. A gas turbine extracts energy from a flow of hot gas produced by combustion of gas or fuel oil in a stream of compressed air.

The turbine assembly is consist of following six major sections or groups Air inlet section Compressor section Combustion system Turbine section Exhaust section Support systems

Working Cycle Of Gas TurbineWorking cycle: Brayton cycle is the ideal cycle for the gas turbine

• 1-2 isentropic compression (in compressor

• 2-3 const. pressure heat-addition (in combustion chamber

• 3-4 isentropic expansion (in turbine)

• 4-1 const. pressure heat rejection (exhaust

STEAM TURBINE• A steam turbine is a mechanical device that extracts thermal energy from

pressurized steam, and converts it into useful mechanical work.• The available heat energy of the steam first is converted into kinetic energy by the

expansion of the steam.• The steam energy is converted mechanical work by expansion through the turbine.• The expansion takes place through a series of fixed blades.

Working cycleThe steam turbine works on rankine cycle, the Rankine cycle is a thermodynamic cycle which converts heat into work. The heat is supplied externally to a closed loop, which usually uses steam as the working fluid.

Process 1-2: The working fluid is pumped from low to high pressure, as the fluid is a liquid at this stage the pump requires little input energy. Process 2-3: The high pressure liquid enters a boiler where it is heated at constant pressure by an external heat source to become a dry saturated vapor.

Process 3-4: The dry saturated vapor expands through a

turbine, generating power.Process 4-1: The wet vapor then enters a condenser where it is cooled at a constant pressure and temperature to become a saturated liquid.

Heat Recovery Steam Generator (HRSG)•The Heat Recovery Steam Generator (HRSG) is a horizontal, natural circulation, single pressure, water tube type steam generator with a single drum.•It is unfired type and uses Gas turbine exhaust gases as heat source.•It has been designed to generate superheat steam at temperature of 512 degree Celsius at a Main Stream Value (MSV).•It consists of following section :

a) Superheater section

b) Evaporator section

c) Condensate Pre heater (C.P.H) and components

d) Steel chimney

Plant overview

Generator

large plant substationpowertransmission

powerdistribution consumer

Generator converts the mechanical energy of turbine shaft into electrical energy for use in an external circuit.

TransformerTransformer is a device that transforms electrical energy form from one alternating voltage to another alternating voltage without change in frequency

Distributed generation

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