A substation is a part of an electrical generation, transmission and distribution system. The main principle of a substation is to transform high voltage to low voltage or execute various other important functions. Electric power may run through various substations at different voltage levels between the generating station and the consumer. In substations, the transformers may adjust the voltage rates between high and lower transmission voltages or when two separate transmission voltages are related.
Why we use stones instead of sand or soil in switchyards?