Optimization of Number, Location, Size, Control Type, and Control Setting of Shunt Capacitors on Radial Distribution Feeders

A new computerized method is developed for optimizing the present worth of revenue savings associated with released system capacity and power and energy loss reductions resulting from the application of fixed and switched shunt capacitors on distribution feeders. The installation cost of capacitor banks is considered. A multi-section, branching feeder model with non-uniform load distribution is chosen to best approximate actual conditions found on most distribution feeders. Utility industry standard capacitor bank sizes and the benefits of retaining and/or modifying presently-operating feeder capacitor banks are considered. Because of the practicality of its features, this method can be a useful tool for distribution engineers. It is presently in use at Central Illinois Public Service Company.