SURATGARH SUPER THERMAL POWER STATION A SEMINAR PRESENTATION ON SURATGARH SUPER THERMAL POWER STATION

Location of station on broad gauge main Railway line. ADVANTAGES OF CHOOSING SURATGARH FOR THERMAL PLANT SETUP : Availability of large amount of clean cooling water required for the station. Location of station on broad gauge main Railway line. Constant power supply. Proximity to M.P. Coal fields. Transmission and Grid substation are quite nearer to the site.

CONTENTS OF THE PRESENTATION: INTRODUCTION BLOCK DIAGRAM AND PROCESS OF STEAM GENERATION COAL HANDLING PLANT. BOILER PROCESS AND ITS SPECIFICATION. TURBINE AND TURBO GENERATOR. ASH HANDLING PLANT PROTECTION AND SWTICHING (CONTROL PANEL)

Introduction Of SSTPS Location: situated near village riyanwali about 25km from Suratgarh town Installed capacity: 1500 MW. 7th Unit of 250MW is under construction. Favorable conditions: Availability of large amount of water. Location at broad gauge Delhi-Mumbai railway. Concentration of load. Constant water supply. Transmission and grid sub station are quit near.

SSTPS IS DESIGNED IN SIX STAGES Units Rating Cost Date of Commission I 1 250 MW 143Cr. 17/01/1998 2 13/01/2000 II 3 480Cr. 25/04/2001 4 01/05/2002 III 5 480 Cr. 21/03/2003 IV 6 535 Cr. 30/04/2010

BLOCK DIAGRAM OF THERMAL POWER PLANT

PROCESS OF STEAM GENERATION

OVERVIEW OF COAL HANDLING PLANT Row coal from bharat coal ltd. Dhanbad & bilaspur(MP) To SSTPS from gurla via a single railway track Wagon trippler Bunkers Crusher house Hoppers Coal mills (pulverization) Row coal feeders Boiler furnace ( tangential firing of pulverized coal)

Air from environment via draft fans BOILER PROCESS: stack Boiler water tubes & various stages Flue gases DM water Super heated steam Air from environment via draft fans Boiler furnace Ash handling plant Pulverized coal

TECHNICAL SPECIFICATION OF BOILER 1.TYPE Water tube ,pulverized fuel fired, single drum type, tangential firing system 2. MAKE BHEL 3. CAPACITY 680tonnes /hour(250MW) 4. PRESSURE 155 Kg./cm2 [G] 5.TEMPERATURE 540 degree

TURBINE :- Turbine is a machine in which a shaft is rotated steadily by impact of steam it converts heat energy into mechanical energy. High pressure TURBINE Intermediate Low pressure

TURBO GENERATOR :- Designed for continuous operation at the rated output. Driven by directly coupled steam turbine at a speed of 3000 r.p.m. Have two main parts: Rotor Stator A temperature detector is provided to maintain the temperature. Temperature of windings is maintain by H2 coolant.

Stator Frame: Welded steel frame construction. Withstand the thermal gas pressure.   It is used for holding the armature stampings and windings in position. Stator Core: Built up of special sheet laminations to minimize eddy current losses . The laminations are stamped out and after that each lamination is varnished on both side.

Stator Bars: Manufactured as half bars. Made in strips to reduce skin effect. Semi-conductor coating is also applied  to a part of overhung to reduce eddy currents to minimum. Stator Windings: Double star layers, lap wound, three phase, short pitch type(to reduce losses). Complete arrangement of winding circuit is viewed from turbine end of generator.

ROTOR: Smooth cylindrical type Rotor shaft made of single piece alloy steel forging of high mechanical and magnetic properties. The cylindrical structure gives better balance , less losses To avoid excessive peripheral velocity rotors have small diameter.  The slip rings are made of forged steel.  They are located at either side of Generator Shaft.

ASH HANDLING PLANT Electrostatic Precipitator(ESP). Chimney. Ash Fly ash (80%). Used for making bricks. Cement. Bottom ash (20%) Used to improve fertility. Roads. To collect ash two ponds of capacity 150 & 230 hact. Are available `

ESP BLOCK DIAGRAM OF ASH HANLING PLANT FURNACE EXHAUSTED GASES FLY ASH & FLUE GASES (80%) ESP FURNACE CHIMNEY DRY & WET ASH(20%) HOPPERS TRANSPORTED TO CEMENT FACTORIES ETC. BLOCK DIAGRAM OF ASH HANLING PLANT

Circuit breakers Isolators Lightning arrestors C.T P.T Relays PROTECTION & SWITCHING: Circuit breakers Isolators Lightning arrestors C.T P.T Relays Control panel

CIRCUIT BREAKERS: Bus coupler is provided with minimum oil circuit breaker of BHEL make. ISOLATOR: All the isolators are provided in 220 KV switchyard and are motor operated. CURRENT TRANSFORMER: All the 220 KV current transformers are provided for measuring and protection.

POTENTIAL TRANSFORMER: Each of 220 KV buses is provided with three P.T.’S are core for each phase of BHEL make. LIGHTENING ARRESTOR: For protection against lightening each if line feeder, generator transformer, station transformer has been provided three L.A. (One for each phase).

CONTROL PANEL CONTROL ROOM Steam pressure & control desk Turbine desk Generator control desk Fuel control desk Fan control desk

QUERIES…..

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