An Analysis of Frequency Response in Integrated Power System Using Power Electronics Controller Tuned With Whale Optimization Technique

The performance of any isolated hybrid power system is characterized by the type of controller being used. The considered power generating units are the solar thermal power plant (STPP), wind turbine generator (WTG), and diesel engine generator (DEG), whose frequency stabilization has been done with the utilization of proportional-integral-derivative (PID), integral-tilt-derivative (I-TD), and tilt-integral-derivative (TID) controllers. Tuning controller gains using the whale optimization algorithm (WOA) and the quasi-oppositional based whale optimization algorithm (QOWOA) involves optimizing the parameters to achieve the best performance for a given hybrid system. A comparative frequency response of the system under the individual influence of PID, TID, and I-TD controllers has been shown with different types of load perturbations. The simulation result shows that QOWOA-TID outperforms the other controllers. The study addresses the critical need for optimizing control strategies in hybrid power systems to ensure stability, efficiency, and reliability, thereby contributing to the advancement of sustainable energy solutions.