Grey wolf optimized PI controller for hybrid power system using SMES

Abstract

This paper emphasizes on load frequency control of hybrid power system using SMES technology. The hybrid power system includes solar panels, wind panels and diesel engine generator along with a microgrid for power generation. Whenever a load change occurs in the system, frequency deviation occurs. In order to mitigate the deviation occurred in the system, a PI controller is optimized. Parameters of controller are optimized using Grey Wolf Optimization technique. SMES is used for the purpose of energy storage and its impact on the frequency stability has studied. Steady state stability analysis has been carried out for two cases viz. during off-peak load and peak load conditions. The system is simulated under different operating conditions and results obtained shows the supremacy of the controller.