Design and Implementation of Whale Optimization Algorithm Based PIDF Controller for AGC Problem in Unified System

Design aspect of controller mechanism to regulate the load frequency in an interconnected generating system is usually regarded as an optimization issue with various constraints. As per the need of the designer, the controller must be designed to fulfill the desired requirements to yield a suitable solutions. This paper presents whale optimization algorithm (WOA) based conventional proportional integral derivative type controller where a filter is employed in the derivative part of the controller for a two area combined thermal power system. The derivative filter is included here to reduce the unwanted signal in the input side of the controller. In the optimization process time based error function is taken as fitness function (ITAE) for designing controller parameters. The performance ability of the controller is modeled with MATLAB Simulink package. The efficiency and dominace of recommended WOA tuned PIDF controller is compared with Jaya based PIDF controller using time domain simulations which validates the effectiveness of WOA based proposed controller employed in the aforesaid dual area combined power system.