Welcome to Presentation on

Kota Super Thermal Power Station (KSTPS)

Submitted by : -Naveen Kumar Saini

7th Sem., EI&CE (11EEBEI037)

Govt. Engineering College Bikaner

Submitted to:Pooja Bhardwaj

(Assistant Processor)EI&CE

Kota Super Thermal Power Plant

Introduction

• It was established in 1983.• KSTPS is designed in following stages.

Stage Unit Number

Installed Capacity (MW)

Date of Commissioning

Status

Stage I 1 110 January 1983 Running

Stage I 2 110 July 1983 Running

Stage II 3 210 September 1988 Running

Stage II 4 210 May 1989 Running

Stage III 5 210 March 1994 Running

Stage IV 6 195 July 2003 Running

Stage V 7 195 May 2009 Running

• Total generation capacity is 1240 MW.• It is located at the left bank of the CHAMBAL River at the upstream ofKOTA BAIRAJ.

• Bituminous Coal is used as fuel.

• Its Calorific Value is 3300 K.cal/Kg.

• Coal India Limited supplies coal from its coal mines of coal producing subsidiaries SECL & NCL to Kota Thermal Power Plant.

General Layout & Basic Idea Coal Handling Plant Boiler Ash Handling Plant Steam Turbine Electricity Generator Cooling System Transformer Control Panel

Main & Auxiliaries Parts of KSTPS

General Layout & Basic Idea

Fuel & Ash Circuit Air & Gas Circuit Feed Water & Steam Circuit Cooling Water Circuit

Air

Coal Handling Plant

Coal Handling Plant can be called the heart of the thermal power plant. It Can be divided into 3 sections.

Wagon Unloading

System

Crushing System

Conveying System

Wagon Unloading System

•Wagon Tripler unloads the coal from wagon to hopper.

•Hopper is made of iron, is in the form of net.

•Hopper allows to pass coal less than 200mm.

Crushing System

Crusher House :- Its main Function is to crush the coal to 20mm. Size.

Two types of crushers in KSTPS

Primary Crushers

Secondary Crushers

Primary Crusher:-• Roll Crusher

Feed Size : 1200 mm.End Product Size : 500mm

• Rotary BreakerFeed Coal size : 500mmEnd Product size : 0-200mm

Secondary Crusher:-It employs a combination of Impact,

shearing, Compression.Roll Crusher

Conveying System:-

Belts are used to convey coal from coal handling plant to furnace.

Conveyor belt specification:-

Belt width : 1400 mm.

Speed : 2.2 m/sec.

Capacity : 750/1350 ton/hr.

No. of conveyor : 38

Total Installed Power : 360 KW

Boiler

Water Tube Boiler:- In this type of boiler water flows inside the

tubes and hot gases flow outside the tubes.

A Boiler (or Steam Generator) is a closed vessel in which water, under pressure is converted into steam.

(i) Fire Tube Boiler (ii) Water Tube Boiler

Furnace:- Furnace is primary part of the boiler where the chemical energy of coal is converted into thermal energy by combustion.

Boiler Drum

Its function is to separate water and steam from

mixture of steam & water generated in the furnace

walls.

Economizer

An Economizer extracts a part of heat from the flue gases and uses it for

heating the feed water before it enters into the steam drum.

Air Pre-heater Super heater

Air Pre heaters are employed torecover the heat from the flue gasesleaving the Economizer & are used toincoming air for combustion.

A Super heater is a device which removes the last traces of moisture from the saturated steam leaving the boiler tubes & also increases the temperature .

Super heater consists a group of tubes.

Ash Handling Plant

In Thermal Plant coal is generally used as fuel & hence the ash is produced as the byproduct. Ash generated in power plant is about 30-40% of total coal consumption.

Air & Gas Plant

Fuel & Ash Plant

Air & Gas Plant

Ash Disposal & Dust Collection

Plant

Air(Atmosphere) Air Pre heater Boiler

Boiler Tubes

Flue gases(Due to

combustion)

Super HeaterChimney Economizer

Ash Disposal & Dust Collection Plant

The ash is removed from fly ash hoppers in dry state & it is carried out to collecting equipment where it is mixed with water & resulting slurry is discharged.

Steam Turbine

Steam Turbine is a machine in which a shaft is rotated steadily by impact or reaction of current or stream of working substances (Steam , Air, Water, Gases) upon Blades of a wheel.

Technical Data of Turbines

Rated Output110MW

Rated Speed3000 RPM

Clockwise Direction

Maximum Steam Pressure

146atm

An electrical generator is a machine which converts mechanical energy into electrical energy through electro mechanical energy conversion.

Electricity Generator

The generator is driven by directly coupled steam turbine at aspeed of 3000 RPM.

Current : 7720A Frequency: 50HzFor

generator (110MW)

Terminals: 6

Cooling System

In KSTPS Hydrogen Cooling System is employed for generator cooling.

Hydrogen is used Because of its superior cooling properties & we can eliminate the fire risk because it doesn’t support combustion. Thermal conductivity of H2 is 7.3 times of air.

Transformer

Transformer is a static device which is used to change the voltage level keeping the power & frequency same.

There are about 83 transformers installed at various places in plant to operate the auxiliaries.

Generator Transformer A Steps up (16.5KV to 220KV)

Generator Transformer B Steps up (16.5KV to 400KV)

Unit Auxiliary Transformer Steps down (16.5KV to 6.9KV)

Station Service Transformer Steps down(6.9KV to 0.433KV)

Types of Installed Transformer

Control Panel

Control Panel I Fan Control Desk

Control Panel II Fuel Control Desk

Control Panel III Steam & Water Control Desk

Control Panel IV Turbine Control Desk

Control Panel V Generator Control Panel

All the Basic Parameters like Temperature of steam & air, Flow of water & air, pressure, Electricity generation etc. are controlled in Control Panel.