Akademik Veri Yönetim Sistemi
SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES, cilt.48, sa.4, 2023 (SCI-Expanded)
The primary objective of grids is to provide uninterrupted and high-quality electrical energy. Synchronous generators play an important role in supplying uninterrupted and high-quality electrical energy to the grid. Synchronous generators achieve this goal with load frequency control (LFC) and automatic voltage regulator (AVR) systems. LFC regulates the rotor speed of the synchronous generator, i.e., the frequency at the connection point, while AVR regulates the terminal voltage of the synchronous generator. Both systems require a controller to operate properly, and their parameters should be properly selected using analytical or numerical methods to achieve the best controller performance. The controllers of the AVR-LFC system are optimized in this paper using a recently introduced metaheuristic method known as the Mayfly algorithm. Because objective function selection is critical in optimization processes, a novel objective function for the AVR-LFC system is proposed in this study. The proposed objective function is compared to well-known objective functions (performance metrics) such as integral square error, integral absolute error, integral time square error, and integral time absolute error in the literature. As a result of this comparison in the time domain analysis, the success of the designed objective function is demonstrated. In the rest of the paper, robustness, and random load/voltage change analysis for the AVR-LFC system are considered using the FOPID controller. Also, the frequency-dependent load analysis is investigated in this study. The success of the optimal FOPID controller designed with the proposed objective function is proved in detail in simulations.