Function and Classification Of Substation

Function and Classification Of Substation


Here, In this article, the main function of substation and classification of substation is given  below, which is more helpful in field work.

Function and Classification Of Substation

Functions Of Substation

The main functions of substations are to receive energy transmitted at high voltage from the generating stations, reduce the voltage to a value appropriate for local distribution and provide facilities for switching.

Classification Substation


According to service

∆Transformer substations

∆Industrial substations

∆Switching substations

∆Power factor correction

∆Frequency changer substations

∆Converting substations.

According to design

1.Indoor type substations

2.Outdoor substations

         (i)Pole mounted substations

         (ii)Foundation mounted substations.

Equipment for Substations and Switchgear Installations


The main equipment for substations and switchgear is mentioned below.


✓Main bus-bars

✓Insulators

✓Isolators

✓Circuit breakers

✓Load-interrupter switches

✓Fuses

✓Power transformers

✓Current and potential transformers

✓Indicating and metering instruments

✓Protective relays

✓Carrier-current equipment

✓Control cables.