1. What is the need of a sub-station in the power system ? 2. Why are...

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Electrical Engineering

1. What is the need of a sub-station in the power system ?
2. Why are pole-mounted sub-stations very popular ?
3. Where we erect a terminal sub-station ?
4. Why do we use isolators on both sides of circuit breaker?
5. What is the utility of instrument transformers insub-stations ?

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3.7 Ratings (495 Votes)

A substation is a part of an electrical generationtransmission and distribution system Substations transformvoltages from high to low or the low to high or perform any ofseveral other important functions Between the generating stationand consumer electric power may flow through several substationsat different voltage levels A substation may include transformersto change voltage levels between high transmission voltages andlower distribution voltages or at the interconnection of twodifferent transmission voltagesSubstations may be owned and operated by an electrical utilityor may be owned by a large industrial or commercial customerGenerally substations are unattended relying on SCADA for remotesupervision and controlThe word substation comes from the days before thedistribution system became a grid As central generation stationsbecame larger smaller generating plants were converted todistribution stations receiving their energy supply from a largerplant instead See Answer

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