Design of a hysteresis voltage control based Interline DVR (IDVR) with VA optimization

This paper deals with a design of a hysteresis voltage control based inter line dynamic voltage restorer (IDVR) in three phase system under different considerations and the proposed inter line DVR to improve power quality in parallel feeder distribution system with help of multi converts. The IDVR has to inject the required volt ampere power into faulty feeder system in order to regulate the load voltages. It desirable to optimize the VA rating with optimal phase jump angle. The proposed method was able to compensate voltage sag and unbalanced voltages with optimal phase jump angle by using IDVR and with minimum VA rating. Minimum VA rating and optimal phase jump angle computed by particle swarm optimization technique and computed values compare the genetic algorithim technique.