Fuzzy Logic Based Optimal Capacitor Placement and Loss Reduction in Radial Power System

Abstract

A fuzzy technique based decision maker is developed and incorporated in this study in order to determine suitable candidate nodes for optimal capacitor placement and sizing in radial distribution systems for the purpose of reducing power loss and improving voltage profile in order to achieve reliability of entire system. The solution methodology is divided into two main parts. The first part is a fuzzy expert system that selects suitable candidate buses to locate capacitor in distribution feeder and the second part is to calculate the reduction in loss in terms of cost. Power flow analysis of the radial distribution system is performed using NR load flow analysis. The proposed method in this paper is simulated in PWS environment and verified on standard IEEE 14 bus radial distribution system. Results show that the proposed method ensures reduction in power loss and improvement in voltage profile at various busses.