Kota Thermal Power Station Training Session May,09 – June,09 Submitted By:- Ankit Kulshreshtha EC-1 Roll No. 06/N/028
Kota Thermal Power StationTraining Session May,09 – June,09
Submitted By:-
Ankit Kulshreshtha
EC-1
Roll No. 06/N/028
Industry at a glance :-
Location:- On the bank of river Chambal in Kota (Rajasthan)
Produce electricity by coal Having 6 units (presently) producing continuously Produce almost 1024 MW energy ,second to
Suratgardh power plant Get coal from Madhya Pradesh coal fields Have 4 big 180 meters height chimneys to control
suspended particles Record of having 85% power factor, get clearance
from CEA
Unit Details of KTPS
Units Date of synchronization on oil
Date of synchronization on coal
Date of declaration of Commercial Operation
Unit-1 17.1.83 20.1.83 01.04.83
Unit-2 17.7.83 05.8.83 01.04.84
Unit-3 25.9.88 11.12.88 11.03.89
Unit-4 01.5.89 16.10.89 06.03.90
Unit-5 26.3.94 11.10.94 18.07.95
Unit-6 30.07.2003 30.7.2003 01.08.2004
Basic Process of Thermal Power plant
The KTPS working is based on four Sections
Coal and Ash Air and gas Feed water and steam Cooling water
Coal and ash
Air and gas
Feed water
Cooling tower
Detail Working of KTPS
Coal Handling Coal is supplied
Through railTrack by own trains
By wagon triplerThe coal is drawn
Into underground hopper
By means of two Belts coal is transferred
To the Conveyer
Now coal is transferred toCrushing house and
stored to bunkers
Now coal is fed to Mills Where coal is
Crushed in pulverizedform
Coal is taken to Coal nozzle
In wind box assembly
From nozzle coal Is
discharged to furnace
There are two types of Mills in KSTPS
Bowl Mills- Grinding chambers in form of Bowl Centrifugal force is used to move
coal against grinder FD fan is used to dry the coal &
drive it to furnace
Tube mills- Constantly rotating tube around 20
rpm Side at which gas gear is mounted
is known as driving end 3 balls of diff. size is used FD fan is used to dry the coal &
drive it to furnace
Here hot air is used to remove moisture from coal and cold air is used to keep temp below flash point
Power consumed by Coal Mill Motor is 340 MW. There are total 8 motor are installed 6 running 2 on stand by PA fans = 820 Kw
ID fans = 850 kw
FD fans = 300 kw
Burner :- Tangential type
discharge the fuel air mixture tangentially to an imaginary circle in the center of the furnace
burners are placed at the four corners of the furnace
Firing Mechanism-Fuel is introduced from wind nozzle located at lower corner inside the boiler
Boiler :- A apparatus where water is being converted into steam
The water in the tube of boiler get vaporized by heat energy & steam is generated
The boiler weighs about 6000 Mega tons ,height about 50 to 60 meters
Whole height is divided in 13 diff. levels as per burning materials
Boiler Auxileries- To increase efficiency
Economiser –Used to preheat boiler feed water, before entering to boilerDeriving heat from the flue gases The economizer is placed in the main flue gas path between the boiler and the chimney.
The waste flue gases flow outside the tubes and heat is transferred to the water flowing inside
Air Preheater –Tubular type heat exchanger The flue gases coming out of the economizer is used to preheat the air before supplying it
to the combustion chamber. An increase in air temperature of 20 degrees can be achieved by this method. The pre heated air is used for combustion and also to dry the crushed coal
Useful to increase efficiency (20% flue gas incrs 1% capacity)In KTPS Regenerative type is used (Having rotor move at 2.4 RPM )
Boiler Drum –To separate water from steam It is located 54 meter from ground Feed water coming out of Economiser enter to the Boiler Drum
Turbine :-A machine which convert Kinetic energy to Mechanical energy
Steam is passed throughnozzle
Steam now falls on Turbine blade
moves the turbine
Parts of Turbine
A.) Nozzle
B.) Blade
C.) Rotor shaft
Flow chart for turbine
• The rotor shaft is made of steel, blade is fixed on it
• Steam is entered from left and right inlets
• Two stage turbine is used
• Steam is recycled
Auxiliaries of turbine :-
Condenser –Here steam is exited by creating vaccum or very low atm pressure ,the cooling water is directly taken from chambal requirement – as discharge from LPT is Liquid+vapour
Hotwell –It is located below the condenser ,to store condensate ,tank of size 5m in depth & 2 to 3m in dia.makeup of leakage of demineralised water also processed
Deaerator –It removes the dissolved gases like O2 , CO2 etc by means of pagging.requirement- As dissolved gases may corrode Boiler Drum
High Pressure Heater –It raise the temp & pressure of water which is requiredfor further processing i.e. 165 kg/cm and 2500 C
Generator :-Machine that coverts Mechanical energy to the
Electrical energy
Principle-Based on faraday’s law of electromagnetic induction
Statistics of generator at KTPSKW : 210 Kw
PF : 0.85
KVA : 247000
RPM : 3000
Hz : 50hz
Coolant :Water + H2
Parts of Generator
Stator Frame –Welded construction of plateUsed to contain and support the stator core winding, also provide H2 as coolant
Stator core –Built of Segmented ,annealed ,insulated ,high quality ,Silicon Sheet ,to give min electricalloss
Stator Bars –Each stator half coil bar is composed of alternate strip of double glass covered and barscopper transposed in straight position, each strip occupies every radial position
Rotor –It is forged on a single piece of special Cr, Ni & Mo alloy steel ,to get required mech prop.
Rotor Winding It consist of two poles each having concentric coils of several turnsSemi hold silver alloy copper of rectangular cross section is used, insulated by epoxyGlasses laminated stripes CONT……
Rotor bearing-Specially designed bearing electronic apparatus to indicate the location of unbalancepole in magnitude and direction.
Slip Ring –Made of forged steel they are located side by side on exciter side of generator shaft
Generator Terminal Bushing –Have six output 3 larger and 3 shorter ,coming out of bottom, short terminals used forExternal connection ,conduction is through a Cu tube ,H2 as coolant is used.
Bush Gear Assembly –Made of natural composition of Graphite and winding materials, have low friction , self lubricating
Control Room:- Where controlling of various equipment taken
place Setup is done by Instrumentation Limited, kota From one unit control 2 adjacent unit can be controlled + local CS for boilers ,turbo
jets ,boilers CR shows and record various parameters Automatic Scheme for feed water regulation and reheat temp computation is provided One CR have five desks as follows :-CP – I1 FAN CONRTOL DESK
a. Induced Fan draftb. Forced Fan c. Primary air Fan
2. PRESSURE DESKa. Furnace pressureb. Primary Air Heater Pressure
CP – II1 FUEL CONTROL DESK
a. Coal air flowb. oil pressurec. temp of milld. flow of aire. differential pressure of mill CONTD…..
CP – III1. STEAM AND WATER DESK
a. Drum Level controlb. Flow of Steam and Waterc. Pressure of steam and waterd. Temp of steam and water
CP – IV1. TURBINE DESK
a. Pressure Controlb. Load controlc. Speed controld. Valves control
CP – V1. GENERATOR CONTROL DESK
a. Voltage Control MVARb. Stator rotor Tempc. For stator cooling a) Water
b) H2
Facts about KTPS Kota Thermal Power Station has performed
outstanding, from the very beginning, produced outstanding results and has continuously
earned cash prizes and shields. Power station has received meritorious productivity awards
given by the Ministry of power, Government of India, in the years 1984,1987, 1989, 1991 and
continuously thereafter. The 6th unit of Kota Super TPS was
commissioned and synchronized with the grid on 30.7.03 and full load was achieved on coal
firing in less than 10 Hrs. The project was completed in 24 months which is a national
record for this type of generating unit.
Conclusion :-
K.S.T.P.S. is the main super thermal power plant located in principle industry city, Kota.
It has established a record of excellence & earned various productivity award from The Ministry of power, Government of India.
Thank you Query Please