Optimal utilization of UPQC during steady state using evolutionary optimization techniques

Unified power quality conditioner (UPQC) is now the most relevant and optimistic mitigating equipment in modern power systems for power quality (PQ) concerns. Optimal usage of the dynamic voltage restorer (DVR) for load reactive power-compensation during steady state significantly improves UPQC utilisation, leads to improved power system efficiency and reliability. VA loading of DVR can be regulated by maintaining an optimal angle $\delta$ between source and load voltage. This paper introduces a novel algorithm based on variable phase angle control (PAC) approach that incorporates evolutionary optimization techniques to calculate this optimal angle. Population based evolutionary optimization techniques, PSO and JAYA are used for the same. Comparative analysis of the result is presented to show the effectiveness of proposed algorithm. This research work will help to develop an optimized instantaneous VA loading based controlling strategy for UPQC for improving efficiency and the VA loading on the UPQC.