Electrical equipment of thermal power plant
Category: Electrical Articles
17 Jan 18
Electrical equipment used in thermal power plant :
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- Alternators
- Transformers
- Switchgear
- Exciter
Alternators
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- Each alternators is coupled to a steam turbine & converts mechanical energy of the turbine into electrical energy.
- The electrical output from the alternator is delivered to the bus bar through transformer.
- The alternators may be hydrogen or air cooled.
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Transformers
A generating station has different types of transformers, are as follows:
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- Main step-up transformer which are used for generation voltage for transmission of power.
- Station transformation which are used for general service in the power station.
- Auxiliary transformer which supply to individual unit auxiliaries.
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Switchgear
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- Switchgear sense the abnormal conditions in the electrical network & isolate faulty part from the healthy section. It contains circuit-breakers, relays, switches & other control devices.
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Exciter
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- Exciter is a dc compound generator and mounted on the same shaft of the steam turbine and generator.
- It continuously supply the field winding of the alternator.