AN ELEGANT VAR SUPPORT ALGORITHM FOR VOLTAGE STABILITY ENHANCEMENT OF DISTRIBUTION SYSTEMS

Abstract

The operating conditions of the present day distribution systems are closer to the voltage stability boundaries due to the ever-increasing load demand. Capacitors are commonly provided in distribution systems to offer the required VAR support with a view to minimise line losses and improve the voltage profile. A new algorithm for optimal locations and sizing of static and/or switched shunt capacitors in order to enhance voltage stability in addition to improving the voltage profile is proposed in this article. Test results on 33 and 69-node distribution systems are presented to demonstrate its effectiveness.