NTPC Dadri is a coal-based thermal power plant located in Uttar Pradesh, India. It has a total installed capacity of 2,642 MW from coal, gas, and solar sources. The coal-based plant consists of two stages with a total of 6 units, consuming 13,000 metric tons of coal per day from local mines. The plant uses a Rankine cycle to generate power, with coal being pulverized and used to produce high pressure steam in boilers that drives steam turbines connected to electric generators. Ash is disposed of using an efficient electrostatic precipitator and stored on-site. The plant also focuses on education, health, and fly ash utilization in the local community.

1. Presentation on
Coal Based Thermal Power Plant at
NTPC Dadri
SUBMITTED BY : LAVISH SONI
16/230

2. Fig: Aerial View Of NCPS

3. NTPC Dadri : Front View

4. NTPC : Vision and Mission

5. NTPC Group :

6. NTPC Dadri : About
• Property of NTPC ltd.
• Spread in 2465 Acre of land.
• State : Uttar Pradesh
• Nearest Airport : Delhi-62 km
• Nearest Rail head: Ghaziabad- 30 km
• Also known as NCPS (National Capital Power Station)
• Provides power to National Capital, Neighbour states and directly to Indian Railways
• Plant and Township built in between 1988-1990
• Has 1500 MW HVDC converter owned and operated by PGCIL.
• Has 6 Units
• Has Largest switchyard in country

7. Capacity
• Coal based thermal plant = 1820 MW
• Gas based thermal plant = 817 MW
• Solar Based plant = 5 MW
Total = 2642 MW

8. Coal To Electricity : Basic

9. Thermal Power Plant : Layout

10. Coal Based Thermal Plant
• Consists Two Stages;
Stage I consists 4 units each of 210 MW giving a total of 840 MW.
Stage II consists 2 units each of 490 MW giving total of 980 MW.
• It consumes 13,000 metric tonnes of Coal per day.
• Coal is sourced from Piparwar mines, Jharkhand.
• Working Based on Rankine Cycle

11. • This cycle is a model used to predict the performance of steam turbine systems
• The Rankine cycle closely describes the process by which steam-operated heat engines
commonly found in thermal power generation plants generate power.
• Used in Steam Power plants.
Rankine Cycle

12. TS Diagram Of Rankine Cycle
1-2 : Isentropic compression in pump
2-3 : Constant pressure heat addition in boiler
3-4 : Isentropic expansion in turbine
4-1 : Constant pressure heat rejection in
condenser

13. Water Source : Upper Ganga Canal

14. Coal Handling Plant

15. Raw Coal Wagon : F- grade (washed),E- grade (Raw)
Fig: NTPC Rakes and Engine Carrying Tonnes of Coal.

16. Coal Unloading
Track Hopper
Time Consuming Process Time Saver Process
Very High Power Consumption Less Power Consumption
Less Area Requirement More Area Requirement
Costly Installation Cheap Installation

17. Actual images of Wagon Tippler

19. Actual images of Track Hopper

21. Coal
Lumps
Grinding Mill
Pulverised Coal
FUEL : Pulverised Coal

22. Conveyor Belt:
• Pulverised Coal is carried through
conveyor belts powered by conveyor
motors.
• Total Belts: 14
• Motor Power: 150 hp
• Coal Carrying Capacity: 400 tons/hr
• Material : Vulcanised Rubber
• Thickness : 3cm

23. Conveyor Motor: Actual Picture

24. Running Coveyor Belt:
• Emergency switches placed at every 25-30 m distance on both sides of belt.

25. Steam Generator : Boiler
• Design of boiler plays important role
in determining efficiency of plant.
• Produce thousands of Tonnes of steam per hour,and
have a fuel-to-steam efficiency as high as 90%.
• The boiler must be at very high temperatures,
Anywhere near 500 degree Celsius and must burn
the fuel continuously at a constant rate.

26. Actual Boiler :

27. • Economiser: The purpose of economiser is to preheat
the boiler feed water before It Is Introduced Into the
steam drum by recovering heat from the flue
gases leaving the boiler
• Boiler Drum: The function of steam drum is to
separate the water from the steam generated in the
furnace walls and to reduce the dissolved solid
contents of the steam to below the prescribed limit of 1
ppm.
• Superheater: is a device used to convert saturated
steam or wet steam into superheated steam or dry
steam. Superheated steam is used in steam turbines for
electricity generation
• Burners: There are 24 total pulverized coal burners
arranged on the corners at a height of 18 to 25 Meters
and twelve oil burners provided each in between two
pulverized fuel burner.

28. Steam Turbine :
• Acts As prime mover
• Two main parts are Cylinder and Rotor.
• The rotor is a rotating shaft that carries the moving blades on the outer edges
of either discs or drums.
• The blades rotate as the rotor revolves. The rotor of a large steam turbine consists
• of high, intermediate, and low- pressure section.
• The high -velocity jet of steam strikes the first set of moving blades.
• The kinetic energy of the steam changes into mechanical energy, causing the shaft to rotate.
• The steam then enters the next set of fixed blades and strikes the next row of moving blades.
• As the steam flows through the turbine, its pressure and temperature decreases, while its volume increases.
• Now mechanical power is sent to shaft of generator.

29. Generator
Based upon the principle of
electromagnetic induction
Consists Stationary parts as Stator and
Rotating part as Rotor.
EMF equation
Frequency of Generator.

30. • Manufacturer : Bharat Heavy Electrical Ltd.
• Insulation used : Class B
• Operating Frequency : 50 Hz
• Cooling System :
• Stator : DM water through hollow
Conductors
• Rotor : Hydrogen Cooling

31. Transformer
Actual Picture
• Manufacturer : Crompton Greaves
• Three ICT of 500 MVA , 400/220 KV

32. Cooling Tower : Natural Draft Type

33. Actual Images of Cooling Towers

35. Video Clip of Running Cooling Towers

36. Ash Disposal and Utilization:
• Largest Ash Disposal and Storage system in Country.
• Electrostatic Precipitator with 99.94% efficiency has installed
to arrest fly ash and dust

37. Ash mound :
• Ecofriendly storage of ash, Landscaped into Green
land.
• Spread in 375 acres , Storing capacity of 53 million
Cubic metre
• 1st in Asia

38. Fly Ash Utilization :
Sold to Entrepreneurs
Bricks

39. Cement
Cement Concrete Road

40. Robotic Dry Cleaning System For Solar Panel (5MW)
• Carriage and Rails get power supply from:
a) Solar
b)regenerative braking during downward motion

41. • NTPC conduct Training and Development program for employees.
• Also conduct Health checking camps for society ensuring total fitness.
• Focuses on Education ,Adopted 4 schools;
a) Kendriya Vidyalaya
b) Delhi Public School
c) DAV Public School
d) Saraswati Shishu Mandir
Secondary Activities @ NTPC

42. References
1. https://www.ntpc.co.in
2. https://www.wikipedia.org
3. NTPC Dadri Guide

43. THANK
YOU