In order to deliver power from generating stations to final
consumers, there is an extensive infrastructure of transmission lines,
switchyards and substations that regulate and distribute electricity.
Within substations are transformers that step up electricity to high
voltages for long-distance transmission and then step it down to lower,
safer voltages for local distribution to homes and businesses. High
voltage switches within substations open and close power lines to direct
distribution. In addition to simple switching, circuit breakers provide
protection to other equipment in the grid by stopping power flow in
overload and fault conditions.
Transformers, circuit breakers, and switches are all critical
elements of the power distribution system. This course will cover the
uses and principles of operation of these important pieces of equipment.
