An adaptive set-point modulation technique to enhance the performance of load frequency controllers in a multi-area power system

Parameters and configuration of power systems are continuously prone to change. This might negatively affect the performance of load frequency controllers. PI controllers are widely used for load frequency control (LFC) in power systems. Hence, enhancing the performance of these controllers is of great importance. In this paper, an adaptive set-point modulation (ASPM) method is proposed to enhance the performance of PI controllers. Simulation studies carried out on a two-area power system with different types of generating units and HVDC link prove the superiority of the proposed adaptive set-point modulation assisted proportional integral (ASPM-PI) over the conventional proportional integral (PI) and proportional integral derivative (PID) controllers. It has also been shown that the ASPM-PI controller is robust in case of power system parameters variations and change in the configuration.