industrial training ppt

1. DAMODAR VALLEY CORPORATION
INDUSTRIAL TRAINING AT
CHANDRAPURA THERMAL POWER STATION
M e d i c a p s I n s t i t u t e o f Te c h n o l o g y & M a n a g e m e n t
Mechanical Engineering Mechanical Engineering
PRESENTED BY : -
SUBMITTED TO : -
Mechanical Engineering Mechanical Engineering

2. DAMOADAR VALLEY CORPORATION
• The Damodar Valley Corporation (DVC) is a government organization
which operates several power stations in the Damodar River area
of West Bengal and Jharkhand states of India
• ESTAIBLISHED IN 7TH JULY 1948 AS THE FIRST MULTIPORPOSE RIVER
VALLEY PROJECT OF INDEPENDENT INDIA
• TO ARREST THE FURY BY THE RIVER OF SORROW AND TO HARNESS
THE RESOURCES OF DAMODAR VALLEY COMMAND AREA IN
JHARKHAND AND BENGAL.
• A POWER GENERATING CAPACITY OF OVER 2710MW.
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3. MISSION AND VISION
• FLOOD CONTROL AND IRRIGATION
• GENERATION,TRANSMISSION AND DISTRIBUTION
OF POWER.
• INDUSTRIAL AND DOMESTIC USE
• ECO-CONSERVATION
• ENRICHING THE QUALITY OF LIVES OF PEOPLE
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4. DVC POWER STATION AT GLANCE:
1)THERMAL
NAME LOCATION CAPACITY
BOKARO-B
Dist-Bokaro
State-Jharkhand
630 MW
(3*210 MW)
CHANDRAPURA
Dist-Bokaro
State-Jharkhand
890 MW
(3*130 +2*250 MW)
DURGAPUR
Dist-Burdhaman
State-West Bengal
350 MW
(1*140 MW + 1* 210 MW)
MEJIA
Dist-Bankura
State-West Bengal
2340 MW
(4*210 MW + 2*250 + 2*500)
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5. 2) HYDEL
NAME LOCATION CAPACITY
TILAIYA
River-Barakar
Dist-Hazaribagh
State-Jharkhand
4 MW
(2*2 MW)
MAITHON
River-Barakar
Dist-Burdhaman
State-West bengal
60 MW
(3*20 MW)
PANCHET
River-Damodar
Dist-Dhanbad
State-Jharkhand
80 MW
(2*40 MW)
TOTAL HYDEL
144 MW
TOTAL THERMAL
2710 MW
GRAND TOTAL
2854 MW
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6. CHANDRAPURA THERMAL POWER STATION
• A UNIT OF DVC, LOCATED AT BOKARO DISTRICT IN
JHARKHAND.
• LARGEST PULVERISED FUEL FIRE POWER STATION OF ASIA
WITH UNIT 1 AS THE FIRST REHEAT UNIT INSTALLED IN INDIA
WITH HIGHEST STEAM PARAMETERS.
• SWITHCHYARD OF CTPS IS THE INDIA’S BIGGEST NETWORK.
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7. Thermal Power Plant Overview

8. Main and Auxiliary Equipments
• Coal handling plant
• Pulverizing plant
• Boiler
• Ash handling plant
• Turbine
• Condenser
• Cooling towers and ponds
• Feed water heater
• Economiser
• Superheater and Reheater
• Air preheater
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9. COAL HANDLING
STEPS IN COAL HANDLING:
a. Coal delivery
b. Unloading
c. Preparation
d. Transfer
e. Storage
f. Implant handling
g. Crushing & pulverizing
h. Weighing & measuring
i. Feeding the coal into furnace
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10. Power Generation
• Here, the burning of coal starts. Water is taken from
DAMODAR river and demineralised and then send to
boiler.
• Super heated steam of 540 degree celsius is formed
which hits turbine with pressure of 137 kg/cm square.
• It rotates turbine to which rotor of generator is coupled
when speed comes to 3000 rpm then building of
voltage starts due to faraday’s law of electromagnetic
induction
• When voltage becomes 15.75kv then this is fed to
transformer to step it up to 220kv,which is bus bar
voltage.
• Generator is synchronized with bus bar and steam is
condensed to water, reused again to generate power.

11. WATER TREATMENT
• This is additional water added in feed water stream . but
before that it Is treated in water treatment plant
• At CTPS, there are 4 treatment units
1) Dirty water from reservoir.
2) Alum is mixed in with water coming from 1.
3) Clean water coming from 2 into 3.
• This treated water is sent into feed stream , where it mixes
with condensed water, to form “final water”.

12. Boilers
• Pulverized coal is put in boiler
furnace.
• Boiler is an enclosed vessel in
which water is heated and
circulated until the water is
turned in to steam at the
required pressure.
DAMAGES DUE TO STEAM

13. Steam Turbine
• Extracts thermal energy from pressurized steam and uses it to
do mechanical work on a rotating output shaft.
• uses multiple stages in the expansion of the steam.

14. Turbine specifications
Order No - 10445 Year of Manufacture -2003
Steam Press. – 76.5 Bar Steam Temp. – 560 ºC
Speed – 50 rps
Rated Capacity – 251.35
MW
Exhaust Steam Pressure – 2.8 Bar
Type- M30-40

15. Generator
• Converts mechanical energy into
electrical energy.
• Turbine is coupled with the Turbo-
generator that normally spins at
3000 rpm in countries with 50 Hz
supply frequency
• The generated voltage is stepped
up in Generator Transformer and
the power is evacuated through
transmission line feeders.
SWITCHYARD
GENERATOR TRANSFORMERS
Maker: BHEL
Rating: 315MVA
Voltage ratio: 16.5KV/240KV
Cooling: oil forced, air forced

16. CONDENSER
• Steam after rotating steam turbine comes to condenser.
Condenser refers here to the shell and tube heat
exchanger (or surface condenser) installed at the outlet
of every steam turbine in Thermal power stations of
utility companies generally.
• These condensers are heat exchangers which convert
steam from its gaseous to its liquid state, also known as
phase transition.
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17. Types of water required
• DEMINERALISED WATER : BOILER
• SOFTEN WATER : COOLING AND GENERAL SERVICE
• DRINKING WATER : DOMESTIC PURPOSE
• UNTREATED WATER : ASH HANDLING,COAL HANDLING AND FIRE
FIGHTING
Water Supply
• Majority of water supply for steam generation is condensed
water. The steam from L.P. turbine is sent into surface
condenser which changes the phase from steam to water.
• Now, this water is sent to cooling towers which are evaporative
coolers used for cooling water. these evaporate some part of
condensed water to reject heat. At CTPS cooling towers are of
hyperboloid structure .

18. AUXILLIARY COOLING WATER SYSTEM
Auxiliary cooling water system involves
following main components.
 ACW PUMP.
 ECW PUMP.
 PHE.
 OTTOKLIN FILTER.
1
3
2
PHE
ACW PUMP
DISCHARGE
ACW WATER
O/L FROM PHE
ECW PUMP
DISCHARGE
ECW FROM PHE

19. ASH HANDLING PLANT
The main operations are:
• Removal of ash from furnace.
• Transfer of ash to a fill or storage.
• Disposal.
Ash can be disposed of as:
• Dry ash system
• Ash slurry system

20. • Fly ash and bottom ash in form of ash slurry is pumped to the ash
ponds through a set of pipe lines.
• Ash ponds for old plants are constructed to enable ash particles
to settle down & decanted water overflows into the river.

21. EXHAUST
• The dust and ash are taken into ash treatment plant as
mentioned earlier.
• The rest flue gas moves through flue gas stack which is a
type of chimney, a vertical pipe or channel for the exhaust
gas outlet.