Industrial Training At Ntpc, New Delhi

INDUSTRIAL TRAINING AT NTPC, NEW DELHI

BY xyz EC 4 th

YEAR

NTPC – Powering India’s growth • NTPC, India's largest power company, was set up in 1975 to accelerate power development in India • It is among the world’s largest and most  efficient power generation companies. • NTPC ranked 317th in the ‘2009, Forbes Global 2000’ ranking of the World’s biggest companies. • With a current generating capacity of 30,644 MW, NTPC has embarked on plans to become a 75,000 MW

NTPC-INSTALLED CAPACITY NO. OF PLANTS

CAPACITY(MW)

Coal

15

24,395

Gas/Liquid Fuel

7

3,995

Total

22

28,350

Coal & Gas

4

2,294

Total

26

30,644

NTPC Owned

Owned By JVs

OPEATING PERFORMANCE

ABOUT POWER PLANT • Power Plant (also referred to as Generating  Station or Power Station) is an industrial  facility for the generation of electric power. • At Power Plants, generators are used as  rotating machine that converts mechanical  energy into electrical energy by

ABOUT BADARPUR THERMAL POWER STATION • The Badarpur Thermal Power Station has five  units of Steam Turbine-Driven Generators,  which has a total capacity of705MW. • The fuel being used is Coal, which is supplied  from the Jharia Coal Field in Jharkhand. Water supply is given from the Agra Canal.

CAPACITY OF BTPS,NEW DELHI Sr .No. 1 2

Capacity 210 MW 95 MW

No. of Generators 2 3 TOTAL

Total Capacity 420 MW 285 MW 705 MW

THERMAL POWER PLANT • In a Thermal Power Plant, one of coal, oil or natural gas is used to heat the boiler to convert the water into steam. • The steam is used to turn a turbine, which is  connected to a generator. • When the turbine turns, electricity is generated and given as output by the generator, which goes to the high tension transformer then supplied to

THERMAL POWER PLANT(Contd.) • In a Thermal Power Plant, one of coal, oil or  natural gas is used to heat the boiler to convert the water into steam. • The steam is used to turn a turbine, which is  connected to a generator. • When the turbine turns, electricity is generated and given as output by the generator, which goes to the high tension transformer then supplied to the consumers through high-voltage

Process of a thermal power plant

OPERATION OF COAL FIRED POWER PLANT

THERMAL POWER PLANT • There are basically three main units of a thermal power plant: 1. Steam Generator or Boiler 2. Steam Turbine 3. Electric Generator

STEAM GENERATOR OR BOILER • A boiler or steam generator is a device used to create steam by applying heat energy to water. • It is a rectangular furnace about 50 ft (15 m)  on a side and 130 ft (40 m) tall. • Its walls are made of a web of high pressure  steel tubes about 2.3 inches (60 mm) in diameter.

STEAM GENERATOR OR BOILER(Contd.) • Pulverized coal is air-blown into the furnace  from fuel nozzles at the four corners and it  rapidly burns, forming a large fireball at the  center. • The thermal radiation of the fireball heats the  water that circulates through the boiler tubes  near the boiler perimeter. • The water circulation rate in the boiler is  three to four times the throughput and is  typically driven by pumps.

STEAM GENERATOR OR BOILER(Contd.)

STEAM GENERATOR OR BOILER(Contd.) • As the water in the boiler circulates it absorbs  heat and changes into steam at 700°F or  370°C. • It is separated from the water inside a drum at  the top of the furnace. • The saturated steam is introduced into  superheat pendant tubes. • Here the steam is superheated to 1,000 °F or

STEAM TURBINE • Steam turbines are used to drive the generators, which produce electricity. • The turbines are driven by steam generated in 'Boilers' or 'Steam Generators‘. • Energy in the steam after it leaves the boiler is converted into rotational energy as it passes through the turbine.

STEAM TURBINE(Contd.) • The turbine normally consists of three stages with each stage consisting of a stationary blade (or nozzle) and a rotating blade.  

STEAM TURBINE(Contd.) • Stationary blades convert the potential energy of the steam (temperature and pressure) into kinetic energy (velocity) and direct the flow onto the rotating blades. • The rotating blades convert the kinetic energy into forces, caused by pressure drop, which results in the rotation of the turbine shaft.

STEAM TURBINE(Contd.) • The turbine shaft is connected to a generator, which produces the electrical energy. • The rotational speed is 3000 rpm.

TURBINE GENERATOR • The generators are used to convert mechanical power, delivered from the shaft of the turbine, into electrical power.  

TURBINE GENERATOR(Contd.) • The mechanical energy from the turbine is converted by means a  - rotating magnetic field  - produced by direct current in the copper winding  of the rotor or field,  - which generates three-phase alternating currents  and voltages in the copper winding of the stator  (armature). • The stator winding is connected to terminals, which are in turn connected to the power system for delivery of the

TURBINE GENERATOR(Contd.) • At Badarpur Thermal Power Station, 2-pole, 3000 rpm, 50 Hz generators are used of capacities 210 MW and 95 MW.

COAL HANDLING DIVISION • The processing of coal before it is fired to the furnace, comes under the coal handling division of the power plant. • The Coal Handling Division of BTPS  has the following parts: 1. Railway Wagon Tripler 2. Conveyor 3. Coal Storage Ground 4. Separator 5. Pulverizer or Bowl Mill

COAL HANDLING DIVISION(Contd.)

COAL HANDLING DIVISION(Contd.) • Pulverizers are used to crush it into fine powdered particles. • FIRED TO THE BOILER FURNACE FOR COMBUSTIO N

Control and instrumentation • Control and instrumentation has following labs: 

 

• Manometry Lab 

 

• Protection and Interlocks Lab 

 

• Pyrometry Lab 

 

• Automation Lab 

 

• Electronics Lab

THANK YOU