internship presentation1
TRANSCRIPT
Prepared by :Prashu PrakashBtech(EEE) 4th yearA2324612039
BRIEF PROFILE OF THE COMPANY Under IPGCL i.e. Indraprastha Power Generation
Company Limited,3 Power Stations are in operation.They are as follows :1)I.P STATION2)RAJGHAT POWER HOUSE3)GAS TURBINE POWER STATION (GTPS)
Under PPCL i.e. Pragati Power Cooperation Limited, one Power Station is in operation and it is:PRAGATI POWER STATION
STATIONS I.P STATION RAJGHAT POWER STATION
GTPS PRAGATI POWER STATION
Station Capacity (MW)
247.5 135 282 330
Units 3*62.5 (GT) + 60 (ST)
2*67.5 (GT) 6*30 (GT) + 3*34 (WHRU)
2*104 (GT) + 1*122 (WHRU)
Year of Commissioning
1967-71 1989-90 1986 & 1996 2002-2003
Coal Field/Gas
NCL,BINA NCL,BINA GAIL HBJ Pipeline
GAIL HBJ Pipeline
Water Sources
River Yamuna River Yamuna River Yamuna Treated water from Sen Nursing Home & Delhi Gate Sewage Treatment Plants
Beneficiary Areas
VIP-South & Central Delhi
Central & North Delhi
NDMC-VIP,DMRC
NDMC,South Delhi
MISSION OF THE COMPANY To make Delhi-Power Surplus To maximize generation from available
capacity To plan and implement new generation
capacity in Delhi To set ever so high standards of
environment Protection To develop competent human resources for
managing the company with good standards
INTRODUCTION Works on Rankine Cycle Steam produced in boiler (usually by burning coal) is
expanded in the prime mover (ie; steam turbine) Condensed steam is fed back to boiler again The steam turbine drives the alternator produces
electricity Steam power plants contribute about 65% of total
electrical energy generated in India
RANKINE CYCLE
LAYOUT OF THERMAL POWER PLANTThe schematic arrangement of a modern
steam power station can be divided into the following stages:
Coal and ash handling plant Steam generating plant Steam turbine Alternator Feed water Cooling arrangement
COAL AND ASH HANDLING PLANT Coal is transported to power station by rail
or road and stored in coal storage plant and then pulverised
Pulverised coal is fed to fed to the boiler by belt conveyers
Coal gets burned in the boiler and ash produced is removed to the ash handling plant and then delivered to ash storage plant for disposal
A 100MW station operating at 50% LF may burn about 20000tons of coal per month and produce 3000 tons of ash
Coal handling plant
• Wagon unloading system• Crushing system• Conveying system
Coal handling plant section
ASH HANDLING PLANT
The Ash from the boiler is collected in two forms:1. Bottom Ash(Slurry):It’s a waste which is dumped
into a Ash Pond2. Fly ash: Fly ash is separated from Flue Gases in
ESP(Electro static Precipitator).
Fly Ash & Flue Gases Economizer ESP
Bottom ash(wet ash)
Ash Pond
Boiler
Cylo
Chimney
Fly ash
Flue Gases
Cement Factory
STEAM GENERATING PLANTThe steam generating plant consists of a
boiler for the production of steam and other auxiliary equipment for the utilization of flue gases
1) Boiler: The heat of combustion in the boiler is utilized to convert water into steam at high temperature and pressure
Boiler
2) Superheater: The steam produced in boiler is wet and is passed through a superheater where it is dried and superheated. Increases efficiency
3) Economiser: It’s essentially a feed water heater & derives heat from the flue gases
STEAM GENERATING PLANT4) Air Preheater: Increases the
temperature of the air supplied for coal burning by deriving heat from flue gases. Air is drawn from the atmosphere by a forced drought fan and is passed through air preheater before supplying to the boiler furnace.
STEAM TURBINE Dry and superheated steam from
superheater is fed to the steam turbine. The heat energy of steam when passing
over the blades of turbine is converted into mechanical energy.
After giving energy to the turbine, the steam is exhausted to the condenser which condenses the exhausted steam by means of cold water circulation
TURBINE – FULL VIEW
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.
FEED WATER The condensate from the condenser is
used as feed water to the boiler. The water that may be lost in the cycle
is made up from the external source The feed water on its way to boiler gets
heated up by water heaters and economiser.
This helps to improve the overall efficiency of the plant
Raw Water
Purified DM water
For cooling purpos
eSteam
Condenser
Water in a Power Plant is used for1.Production of Steam- for rotating turbine.2.Cooling Purpose- For cooling of various equipment
3% of water is wasted during this process. Appx 4 cubic mt water is lost /day/MW
COOLING ARRANGEMENT Condenser condenses the steam
exhausted from the turbine Water is drawn from natural sources like
river, lake, canals… Circulating water takes up the heat and
itself gets heated up This hot water can be discharged away
or used again by using a cooling tower
MERITS & DEMERITS Merits: Requires less space than hydro power plant Initial cost is less Cheaper fuels like coals and water Cost of generation is less
Demerits: Temp. of combustion chamber is too high, which results
in shorter life time. Thermal plant has low efficiency Running cost is higher It pollutes the atmosphere
REFERENCES Links referred :
http://www.hrsgdesign.com/design0.htmhttp://ipgcl-ppcl.gov.in/
http://www.osha.gov/SLTC/etools/electric_power/illustrated_glossary/substation.html#Equipment
Books: Principles of Power System- V.K. Mehta A Course in Power Systems- J.B. Gupta