Voltage Stability Enhancement In Radial Distribution Systems By Optimal Placement Of Capacitors

摘要

In this paper, to enhance voltage stability of distribution systems, a Network Topology based load flow results are used to calculate Voltage Stability Index (VSI). Then an algorithm for capacitor placement (CP) based on this voltage stability index is implemented to determine the optimal locations, number and size of fixed and/or switched shunt capacitors for voltage stability enhancement, in addition to improving voltage profile and reducing losses in the radial distribution system. The Capacitor Placement algorithm is tested on 15-Node and 85-Node Test Distribution Systems and the results are presented. Test results show that the Capacitor Placement algorithm is effective in enhancing voltage stability of the Radial Distribution System. Also there is improvement of voltage profile and reduction of losses in the distribution systems. The Capacitor Placement algorithm is implemented using the MATLAB software