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WEL-COME
THERMAL POWER STATION
PARALI
BYNIRAJ J. MESHRAMMAHENDRA S. MAGREVISHAL P. TAKLENIKHILESH G. VAIDYAKAPIL J. CHINCHOLE
THERMAL POWER STATION
LOCATION : Parali-Vaijyanath ,Dist .Beed . (MH)
INFORMATION :Parali Thermal Power Station started in the year 1971-72.
Total installation capicity of TPS= 1130 MW
INTRODUCTION
Stages Year UNIT no. Capacity
1 1971 U-1,2 30 MW each
2 1984 U-3,4,5 210 MW each
3 2005 U-6,7 250 MW each
Power Plant Stages
All power plants convert some form of easily and naturally available energy in to electrical energy. In thermal power plant, Water is the working fluid. The source of energy is Chemical Energy of fuel. Sequence of energy conversion is:
What is thermal power plant?
SELECTION OF SITE FOR THERMAL POWER STATION
1) Supply of fuel2) Availability of water3) Transportation facilities4) Cost and area of land5) Near to load centers6) Away from populated area
ENERGY CONVERSION PROCESS
COAL HANDLING PLANT (CHP)
WATER HANDLING PLANT (WHP)
TURBINE
TRANSFORMER AND GENERATOR
BOILER SYSTEM
THERMAL POWER PLANT CONSISTS OF FOLLOWING MAIN PARTS:-
WHY COAL as Fuel ?Coal can provide usable energy at a cost of between 12 to 15 % compared to oil and natural gas, and coal prices are relatively
stable. Coal is inherently higher-polluting and more carbon-intensive
than other energy alternatives. However, coal is so inexpensive that one can spend quite a bit
on pollution control, and still maintain coal’s competitive position.
TYPES OF WATER REQUIRED AT TPS
DEMINERALISED WATER – BOILER SOFTEN WATER – COOLING &
GENERAL SERVICE DRINKING WATER – DOMESTIC PURPOSE
ASH HANDLING – RAW WATER OR UNTREATED
WATER FIRE FIGHTING – UNTREATED WATER
COAL HANDLING – UNTREATED WATERDM % 3-4
CW/GS % 50-55AHP % 40-45DOMESTIC % 6-7
MachinesCHP : To Handle Fuel Coal
WTP : To Treat WaterBoiler : Generate High Press, High Temp Steam
Turbine: As aPlants/Main prime mover to Generator
Generator: To Generate ElectricityTransformer : For required Voltage
Switch yard : On ward Transmission of Power
COAL CYCLE
Coal Mine
Train
Tippler Conveyor Belt
Primary Crusher
Secondary Crusher Coal Bunker
Coal Feeder,MILL
FURNACE
Pressure parts of Boiler
WaterwallEconomiserSuperheater
ReheaterBoiler drum
STRUCTURE OF BOILERS Boiler structure is supported on 4 columns that is hung from top and
supported on vertical columns
All plates, rivets, bars and their testing is covered under regulation and construction is done under the supervision of inspecting officer
at all the stages
The boiler is a rectangular furnace about 50 feet(15 m) on a side and 130 feet (40 m) tall. Its walls are made of a web of high pressure
steel tubes about 2.3 inches (58 mm) in diameter.
Pulverized coal is air-blown into the furnace through burners located at the four corners, or along one wall, or two opposite walls, and it is
ignited to rapidly burn, forming a large fireball at the center
Types Of Boilers
DO
WN
CO
MER
S
WA T
ER W
A LL
F RO
NT
WA T
ER W
A LL
REA
R
PLA T
E N S
UP E
R HE A
T ER
REH
EATE
R F R
ON
T
REH
EATE
R R E
A R
FIN
A L S
UPE
RHE A
TER
WATER WALL BOTTOM RING HEADER
SCW
SH
FRO
NT
SCW
SH
RE A
R
DRUM
CRH IN
REAR ROOF
WATER INLET
SH STEAM OUTLET
EXTENDED WW
EXT SCW SH
FRONT ROOF
HRH OUT
LTSH
Economiser
May 2, 2023 PMI Revision 00 21
DRUM Lifting in Progress
BUCKSTAY SUPPORT FOR WATTER WALL TUBES
TURBINES
TURBINE CROSS SECTIONAL VIEW
HPT,IPT,LPT
HP Turbine• IP Turbine• LP Turbine
• Regeneration Heating System consists of• 1. HP Heaters 2. LP Heaters
3. Deaerator 4. Condenser5. CEP and BFP 6. CW System
TURBINE SYSTEM
Steam flow in a turbineSteam in H.P turbine : P = 140 kg/cm2
T = 540 oCSteam in I.P : P= 26 kg/cm2
T = 540 oCSteam in L.P. : P = 7 kg/cm2
T = 270 oC
Working principleKinetic energy converted to rotational
energy which rotates the rotor of generator
Blades are so designed so as not to strike the blades but to glide on to
avoid wearingTotal motive force acting on the blades is thus the resultant of all
the centrifugal force plus the change of momentum
ROTORS
HIGH PRESSURE
INTERMEDIATE PRESSURE
LOW PRESSURE
BOILER
Condenser
LPTIPTMS
MS
CRH NRV
HRH
HPSV
HPSV
IPSV
IPSV GENERATOR
HPCV
HPCV
IPCV
IPCV
CRH NRV
TGSETHPT
Generator ComponentsStatorRotor
ExciterStator water cooling system
Rotor & Stator Hydrogen cooling SystemHydrogen Seal oil System
Bus DuctsGenerator synchronizing system
Working Of GeneratorThe principle Faraday’s law , is that an electromotive force is generated in an electrical conductor which encircles a varying magnetic flux.
3-Phase output
REQUIREMENTS
FOR ONE UNIT OF 210 MW • 600 ton steam supply/hr • 125 ton coal supply/hr• Three motors of 500 HP for supply of water• Daily consuption of coal for whole plant is
near about 13000 ton.
THANK YOU