Industrial Training Project

on Turbo Generators

Presented By-

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Overview of B.H.E.L.

Bharat Heavy Electricals Limited (B.H.E.L.) is the largest engineering and manufacturing enterprise in India.

BHEL caters to core sectors of the Indian Economy viz., Power Generation's & Transmission, Industry, Transportation, Telecommunication, Renewable Energy, Defense and many more.

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BHEL has its setup spread all over India namely New Delhi,Gurgaon,Hardwar, Rudrapur, Jhansi, Bhopal, Hyderabad, Jagdishpur, Tiruchirapalli, Banglore and many more.

B.H.E.L., Hardwar

Bharat Heavy Electricals Limited (B.H.E.L.), Hardwar has two manufacturing plants:-

Heavy Electrical Equipment Plant(HEEP) Central Foundry Forge Plant(CFFP)

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H.E.E.P.

Heavy Electrical Equipment Plant (HEEP) located in Hardwar is one of the major manufacturing plants of BHEL. The core business of HEEP includes design and manufacturing of large steam and gas turbines, turbo generators, hydro turbines and generators, large AC/DC motors and so on.

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The various blocks in HEEP are as follows:

Block-1: Turbo generator Shop Block-2: Fabrication Shop Block-3: Turbine Shop Block-4: Insulation Block Block-5: Forging Shop Block-6: Stamping Shop Block-7: Packing and Wood Working Shop Block-8: Condenser and Piping Shop New Blade Shop

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PROJECTTURBO GENERATORS

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BLOCK -1

Machine section Assembly section Hydro generator Stator winding

Machine section Iron assembly Heavy rotor assembly section Stator winding section Turbo generator Armature/Rotor section General assembly section Test stands

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STUDY OF TURBO GENERATOR

TECHNICAL DATA

Rated data & output

Turbo generator

Main exciter Pilot exciter

Apparent power

588 MVA - 65kVA

Active power 500 MW 3780 KW -

Current 16.2 KA 5300 A 195 A

Voltage 21 KV 600 V 220 V

Frequency 50 Hz - 400 Hz

Power factor 0.85 - -

Hydrogen pressure

3.5 Bar - -

Rated field current

4040 A - -

Rated field voltage

340 V - -9

RECTIFIER WHEEL

Number of fuses per rectifier wheel

30(800V ,800A)

Fuse resistance Approx 150 μ ohm

Number of diode per rectifier wheel

60

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The two pole uses hydrogen cooling for rotor

winding and direct water cooling stator winding.

Turbo generator consists of following parts:

o STATORo ROTORo BEARINGSo SHAFT BEARINGS

Other additional auxiliaries:o Excitation systemo Gas system

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Constructional Features Of Turbo Generator

STATOR

Stator consists of following parts:o Stator frameo Stator coreo Stator windingo Locating barso End shieldso Terminal bushingso Phase connectorso Hydrogen coolero End winding vibrationo Supervision of generator

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STATOR FRAME

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STATOR CORE

ROTOR

Rotor consists of following parts:o Rotor shafto Rotor windingo Retaining ringo Field connectiono Fanso Rotor cooling system o Bearingso Shaft seals

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ROTOR SHAFT

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ROTOR WINDING

RETAINING RING

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FAN

AUXILLARY SYSTEMS

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o GAS SYSTEM

o BRUSHLESS EXCITATION SYSTEM

oPERMANENT MAGNETIC PILOT EXCITER

oTHREE PHASE MAIN EXCITER

oAUTOMATIC VOLTAGE REGULATOR

oRECTIFIER WHEELS

oCOOLING SYSTEM

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RECTIFIER WHEEL

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The exciter is air cooled. The cooling air is

circulated in a closed circuit and recooled in two

cooling sections arranged along side the exciter.

The complete exciter is housed in an enclosure

draw the cool air in at both ends and expels the

warmed air to the compartment beneath the base

plate.The main exciter enclosure receives the cool

air from the fan after it passes over the pilot

exciter.

COOLING SYSTEM

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BRUSHLESS EXCITER

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PERMANENT MAGNET EXCITER

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Advantage Of Turbo Generator Over Hydro Generator

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CONCLUSION

o Turbo Generators are used where high frequency supply is required.

o As steam is used so no site problem.

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THANK YOU