Voltage sensitivity based technique for optimal placement of switched capacitors

Abstract

This paper is about the development of a fast but exact enough technique to solve the optimal allocation and sizing of capacitors on power systems, no matter the voltage level. The proposed methodology is mainly characterized by assuming a linear behaviour for the reactive problem and having an objective function that minimizes the sum of the voltage magnitude deviations from the specified voltage limits squared, for all those buses with over/under voltages. The proposed approach has been tested on the IEEE 14-bus and 30-bus systems, and on an existing distribution system with actual data. Results are compared with those of using an exact calculation of voltages