The major element of a electrical substation is a power transformer. The transformer is a device which is used to reduce or amplify the voltage of the power fed to it. Switch gear is a key module of a substation to control as well as defend circuits, and increasing the dependability of the electrical supply, decreasing fault currents.
The voltage of the electric current leaving a power station being 25,000 volts. The reason of a substation is to amplify or reduce the voltage relying on its location.
Large Substations- To send the power across long distance a huge substation amplify the voltage for such a journey. High voltage currents leave a grid substation on high overhead lines carrying insulators to ascertain that the current does not travel to the ground.
Small Substations - In the country little substations are present to lower voltage towards 33,000 volts. In more built up areas substations lower the voltage more, between 11,000 as well as 33,000 volts.
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