Subject: Power System Analysis

Topic: Power System Transients

Difficulty: Low

Switching Transient :-

• Switching transients occur in power systems each time an abrupt circuit change occurs. This phenomena is attributed by the combination of two factors in motor applications: the mechanical energy stored in the rotating machine and the electrical energy stored in the inductive load.

• These transients are short lived and oscillatory in nature. However, they are extremely important as the electrical equipment is subjected to its greatest stresses during this period. When the two electrical contacts separate, an arc is created in the interrupter that maintains current flow.