A substation can be thought of as a “transfer station” or “control point” in the power system. It is essentially a compact, integrated power distribution unit that combines the medium‑voltage switchgear room, transformer room, and low‑voltage switchgear room into one enclosed structure, receiving, controlling, and transmitting electricity to move power from one part of the grid to another.
In a typical power system, a power plant generates electricity, which is then transmitted over long distances through transmission lines. But before the electricity can be delivered to homes, buildings, or factories, it must first pass through a substation. Inside the substation, the power is directed to the appropriate circuits so that it can continue safely through the grid.
