Electrical equipment of thermal power plant

Electrical equipment used in thermal power plant  :

    1. Alternators
    2. Transformers
    3. Switchgear
    4. Exciter

Alternators

      • 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.
Alternators 

Alternators

Transformers

A generating station has different types of transformers, are as follows:

      • 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.
Transformers 

Transformers

Switchgear

      • 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.
Switchgear 

Switchgear

Exciter

    • 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.

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