#substation construction

There is one vital function of substation construction, that is called the switching function, which is used as a connecting and disconnecting of transmission lines or some other components from the system. Usually, the switching events may be planned or unplanned. Transmission line or other components need to de-energized for maintenance and new construction. Take adding or removing a transmission line as example. Aslo, even no company will bring down its full system for maintence. From rountine testing to adding new transformer substation, all work should be performed, must be done while keeping the whole system running.

What's more, there is something fault happened in a transmission line. Sometimes a line is hit by lighting or a steel tower is blown down by the heavy wind. The switching function of the electrical substation is to isolate the faulted part of the system as soon as possible. De-energizing faulted equipment can protect it from damage, while isolating a fault can help to keep the rest of electrical grid on a stable operation.