Substations may be on the surface in fenced enclosures, underground, or located in special-purpose buildings. High-rise buildings may have several indoor substations.

What are substations used for?

Substations convert the power system voltage from transmission levels to distribution levels so that it can be safely and efficiently delivered down our streets.

What is substation in power grid?

Electrical substations are the interface between parts of the distribution grid and transmission systems. These fenced off areas (see Figures 1 and 2) step down the voltage in the transmission lines to one that is suitable for the distribution grid.