Sliding Mode-Based Load Frequency Control of a Power System with Multi-Source Power Generation

Abstract

The chattering phenomena of high-frequency switching make it challenging to perform sliding-mode control (SMC) for load frequency control of power networks. Actuators utilized in power systems are highly vulnerable to this chattering issue in SMC. In this study, a load frequency controller based on decentralized SMC is developed for multi-area multi-source interconnected power systems (MMIPS) with matching uncertainties. To enhance the dynamic performance of the system in achieving intervals, the proportional and integral switching surface is built for each region. In addition to guaranteeing the resilience of the multi-area multi-source power network, the suggested second order sliding mode control (SOSMC) legislation avoids chattering phenomena in control input. The reaching law approach suggests the robust controller to ensure that, following a load and operation point modification, frequency fluctuation converges to zero. Additionally, the simulation report shows that the suggested controller maintains the quality requirement by dealing with operating conditions in a wider range, rejecting disturbance, lowering the transient response of frequency, and removing the overshoot issue. To demonstrate the effectiveness of the suggested decentralized SMC approach, a two-area multi-area multi-source linked power system is explored. The result of the MATLAB/SIMULINK simulation is presented, and its findings are contrasted with recently developed traditional control systems.