Answer Posted / nilkanth.
There are mainly three types of sub-stations.
1.step up/down substations-where stepping up or stepping
down of voltage has done.
2.power factor improvement sub station-where power factor
is improved by installing capacitor banks or synchronous
condensors.
3.switching sub stations- Where switching action like
switching on or off has done for maintenance purposes for
other reasons.
4.poll mounted substation, Underground substation
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