Analysis of Distribution Capacitor Switching Transients

Capacitor bank switching is one of the most common switching events on electrical power systems. Capacitors are quite economical and are generally a convenient means of providing reactive power compensation to correct power factor and support voltage. This makes them prevalent in mots U.S. power systems. When energized, a capacitor bank can interact with the system inductance to yield oscillatory transients which can propagate into the local power system and pass through distribution transformers into customer loads and facilities. Under specific circumstances, these transients may cause misoperations or even damage equipment at customer facilities.

The primary objective of this project is to define and quantify, through use of detailed computer simulations, the key factors which affect capacitor switching transients, with respect to their magnitude and frequency, on distribution systems.

Tagged: EMTP, capacitors, transients, cap switching