Fractional PID Controller Tuning Using Krill Herd for Renewable Power Systems Control

This paper addresses the optimization of the Fractional Order PID controller (FOPID) parameters used to control the frequency and power deviation of hybrid power system based renewable energy generation. This proposed system consists of renewable energy generation like wind and photovoltaic systems with conventional sources such as diesel generator and fuel cell along with Energy Storage Systems (Battery Energy Storage Systems (BESS) and Flywheel Energy Storage Systems (FESS)). The Krill Herd algorithm is used to determine the gains parameters of the Fractional Order PID controller. The scope of this paper is to eliminate the frequency and power deviation to provide stability of the proposed system. The obtained results show that the proposed controller enhances the system stability performance in comparison with the PID controller.