(Rajamangala University of Technology ISAN, Khonkaen Campus, Thailand)(2) Sitthisak Audomsi
(Mahasarakham University, Thailand)(3) Kittipong Ardhan
(Kalasin University, Thailand)(4) Worawat Sa-Ngiamvibool
(1. Faculty of Engineering, Mahasarakham University, Maha Sarakham, 44150, Thailand. 2) Electrical and Computer Engineering Research Unit, Mahasarakham University, Mahasarakham 44150, Thailand)(5) * Natpapha Chansom
(Rajamangala University of Technology ISAN, Thailand)*corresponding author
AbstractMaintaining frequency stability in hybrid renewable-integrated power systems remains a critical challenge due to the inherent variability and uncertainty of photovoltaic–thermal (PV–T) energy sources. Traditional proportional–integral (PI) controllers, optimized using conventional metaheuristic algorithms such as the Whale Optimization Algorithm (WOA), Firefly Algorithm (FA), and Salp Swarm Algorithm (SSA), often suffer from limitations including slow convergence, premature convergence to local optima, and reduced robustness under severe load disturbances. The research contribution is the development and systematic evaluation of a chess algorithm (CA)-based PI controller tuning approach for enhancing load frequency control (LFC) in hybrid PV–T systems. Unlike population-based methods, the CA employs chess-inspired strategic decision-making processes, which improve the search efficiency and the ability to escape local optima in high-dimensional optimization problems. In this study, the proposed CA-based optimization method is applied to a two-area hybrid PV–T power system, where the system is subject to various operating conditions, including solar radiation fluctuations and step load perturbations. The tuning of PI controller parameters is performed using the integral of time-weighted absolute error (ITAE) as the objective function. Simulation results demonstrate that the CA-optimized PI controller achieves superior performance in minimizing overshoot, undershoot, and settling time when compared with controllers optimized by WOA, FA, and SSA. Specifically, the CA approach achieves faster stabilization and lower frequency deviations, highlighting its potential for real-time implementation and enhanced grid reliability. Future work will explore the scalability of the proposed method to multi-area power systems and evaluate its computational efficiency through hardware-in-the-loop validation.
KeywordsLoad Frequency Control; Chess Algorithm Optimization; Hybrid Photovoltaic-Thermal Systems; PI Controller Tuning; Frequency Regulation in Renewable Grids
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DOIhttps://doi.org/10.31763/ijrcs.v5i2.1844 |
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