A utility substation refer to a part of an electrical transmission, generation, and distribution system.Substations actually
transform voltage from low to high, or vice versa, or basically perform some other crucial functions.Between the consumer station and the generating station, the electric power flow through various substations at different levels of voltage.
Substations may be operated and owned by electrical utility, or may be owned by a commercial customer.
A utility substation actually includes several transformers to change voltage levels between low distribution voltages and high distribution voltages,or for interconnecting two or more transmission voltages.
Components of a substation.
Substations generally have protection, switching, and control equipment.In a major substation,circuit breakers are basically used to overload currents or interrupt short circuits that may happen on the network.Substations by themselves do not normally have generators,though a power plant could have a substation.Devices such as voltage regulators and capacitators are also found in a substation.
They may be built on the underground, on the surface in a fenced enclosure, or in special purpose building.Interior substations are normally found in urben areas in order to reduce the noise, for reasons of appearance, and to protect the switch gear from pollution and extreme climate.
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