Optimisation Techniques for Load Frequency Control

Abstract

Stability is a crucial part when discussing power systems. It is the ability of a system to return to an equilibrium state after being subjected to a certain load perturbation. In this paper, the focus is on frequency stability, also known as Load Frequency Control (LFC). For this instance, two different power systems, namely a single source two area system and a multi-source power system were used. The aim is to design and apply three different control algorithms namely Equilibrium optimisation (EO), Grey Wolf optimisation (GWO) and Whale optimisation (WOA) to the two mentioned power systems and determine the most suitable one for LFC. The results obtained showed that all three algorithms were successful in improving the uncompensated response. Further in-depth analysis which was related to the fitness function found that the Equilibrium optimisation was the best among the three techniques due to its superior explorative behaviour.