PRESENTATION OF INDUSTRIAL TRAINING ON THERMAL POWER PLANT PLANT AT NTPC, SHAKTINAGAR SHAKTINAGAR
Submitted by:Sunil Kumar Singh. EN -7th sem. 0708221056
NTPC,
the largest power Company in India, was setup in 1975 to accelerate power development in the country c ountry.. NTPC has installed capacity of 29,394 MW. It has 15 coal based power stations (23,395 MW) & 7 gas based power stations (3,955 MW) 4 power stations in Joint Ventures (1,794 MW). The company has power generating facilities in all major regions of the country country.. 2017. It plans to be a 75,000 MW company by 2017.
Installed Capacity 2000 MW Location Sonebhadra, Uttar Pradesh Coal Source Jayant mine W ate ater Source Rihand Reservoir Beneficia ry States UttarPradesh,Uttranchal, Rajasthan, Punjab, Haryana, Delhi and, Himachal Pradesh, Chandigarh Unit Sizes Stage - I: 5x 5x 200 200 MW Stage -II: 2x 500 MW
Prime mover coupled to Alternator. Prime mover is driven by energy obtained from various sources such as burning of fuel , pressure pressure of water, force of wind etc. Fig. Fundamental of generation of Electricity
A generating
station which converts heat energy of coal combustion into electrical energy is known as a steam power station. Steam is produced in the boiler by utilizing the heat of coal combustion. The steam is then expanded in the steam turbine and is condensed in a condenser to be fed into the boiler again. The steam turbine drives the alternator which converts mechanical energy of the turbine into electrical energy.
a. Steam generating equipment b. Condenser c. Prime mover d. Electrical equipment
Ste
e er e r ti ti
Boiler Superheater
Economiser Air Pre-heater
eq i
e t i cl cl
es:
Boiler A boiler
is closed vessel vessel in which water is converted into steam by utilising the heat of coal combustion. Steam boilers are broadly classified into following two types: (a) Water Water tube boilers (b) Fire tube boilers In a water tube boiler , water flows through the tubes and the hot gases of combustion flow over these tubes. Water-tube Water-tube boilers are used for high-press high-pressure ure boilers
Figure-water tube boiler
Figure Fig ure-- fir firee tube boile boiler r
which removes last traces of moisture. It helps in reduction in requirement of steam quantity. steam being dry reduces the mechanical resistance of turbine. No corrosion at the turbine blades .
A device
They are such devices which recover the heat from the flue gases on their way to chimney and raise the temperature of feed water. Air Pre-heaters recover the heat from the flue gases leaving the economiser and heat the incoming air required for combustion
Which condenses the steam at the exhaust of turbine. It creates a very low pressure at the exhaust of turbine, this helps in converting heat energy of steam into mechanical energy in the prime mover. mover. The condensed steam can be used as feed water to the boiler.
steam turbine is a mechanical device that extracts thermal ther mal energy from pressurized steam, and converts it into mechanicall energy mechanica e nergy.. bout 86% of all electric generation in the world is by use A of steam turbines. reciprocatin g piston It has almost completely replaced the reciprocating steam engine. A
Turbo generator An A n turbo generator is coupled to a steam turbine and converts mechanical energy of the turbine into electrical energy. energy. hydrogen or air cooled. Rating of turbo generator is It may be hydrogen normally 200MW & 500MW. Transformers (a) main step-transformers, which steps-up generated voltage transmission of power (b) station transformers, general purpose (c) auxiliary transformers, which supply to individual unitauxiliaries. Switchgear which locates fault on the system and isolate faulty part from healthy section. It contains circuit breakers, relays, switches and other control devices.
Source
of coal = Jayant
Location of source = Near Singrauli (Madhya pradesh)
Distance of source from plant
Type of coal = D grade
Coal requirement
Mines (Madhya pradesh)
= 25,000 MT/Day
= 5kms
CHP follows three coal paths: 1.Path A-from track hopper to bunkers 2.Path B-from track hopper to stockyard. 3.Path C-from stockyard to bunker . Path A-
Path B-
Path C-
MILLS Generally
thermal power stations stat ions use coal mills or called coal firing system system.. Coal is reduced to fineness (-20mm). This fine powdered coal is called pulverized pu lverized coal and is carried forward to the burner by air through pipes.
natural result from the burning of fossil fuels, particularly coal, is the emission of flyash. Ash is mineral matter present in the fuel. For a pulverized coal unit, 60-80% of ash leaves with the flue gas.
A
Electrostatic precipitator has series of collecting & emitting electrodes in a chamber.
At
Hooper and flushing system form a base of chamber.
Efficiency of ESP is approx. 99.8%
the inlet of the chamber there are distributer screen.
SWITCHYARD witchyard ard Switchy
is considered as the HEART of power
plant. It is a junction , which carries the generated power to its destination. It is basically an open area where many different d ifferent kind of outdoor equipments are located. eg: busbars , transformers , circuit breakers etc. Switch yards can be of 400KV, 132KV.
Figure-switchyard
THA NK S
