Frequency Stability Analysis of Microgrid interconnected Thermal Power Generating System with GWO tuned PID controller

Abstract

In this proposed research delivers about the frequency stabilization of hybrid power system (thermal unit with Distribution Generation System (DGS)) is analyzed by considering Proportional Integral Derivative (PID) regulator as an auxiliary controller. Gain values of the introduced regulator is tuned by Grey Wolf Optimization (GWO) technique with the Integral - Time - Absolute - Error (ITAE) objective function. The behavior of the projected optimization technique tuned controller is examined in this research work by comparing the response with Genetic Algorithm (GA), Particle Swarm Optimization (PSO) and Ant Colony Optimization (ACO) tuned controller behavior to show its efficacy. In the proposed work, all the analysis is carried out by applying one percent step - load - perturbation (1% SLP). And, also time domain specification parameters are measured to demonstrate the effectiveness of GWO dependent on the PID controller. Simulation results proves that GWO designed PID controller provides more supremacy (lesser Peak overshoot and undershoot with minimal relaxing time) result during emergency loading condition over GA, PSO and ACO technique designed secondary PID controller.