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Dynamic Modeling and State Feedback Control for Enhancing Small Signal Stability in Islanded Microgrids with Diesel Generator Frequency Damping | ||
| Journal of Operation and Automation in Power Engineering | ||
| دوره 13، Special Issue، 2025 | ||
| نوع مقاله: Research paper | ||
| شناسه دیجیتال (DOI): 10.22098/joape.2025.18912.2465 | ||
| نویسندگان | ||
| Shakhboz Meylikulov* 1؛ Isayev Fakhriddin2؛ Kochkarova Madina3؛ Turayev Muhammadi4؛ Zakirjon Musabekov5؛ Ochilov Farxodjon6؛ Ulugbek Anarboyevich Nurmanov7 | ||
| 1Termez University of Economics and Service, Termez, Uzbekistan | ||
| 22Scientific Research Center Scientific Foundations and Problems of the Development of the Economy of Uzbekistan under Tashkent State University of Economics, Tashkent, Uzbekistan. | ||
| 3Turin Polytechnic University in Tashkent, Tashkent, Uzbekistan. | ||
| 4Kattakurgan State Pedagogical Institute, Samarkand, Uzbekistan | ||
| 5Tashkent State Technical University named after Islam Karimov, Tashkent, Uzbekistan | ||
| 66Tashkent state University of Economics, Tashkent, Uzbekistan | ||
| 7The Banking and Finance Academy of the Republic of Uzbekistan | ||
| چکیده | ||
| Microgrids face significant challenges due to the stochastic behavior of distributed energy resources, which may excite low-damped oscillatory modes and compromise stability. This paper develops a unified small-signal model of an islanded microgrid and proposes a state-feedback controller (SFC) as a power system stabilizer (PSS) to enhance low-frequency damping in the diesel generator subsystem. The controller and inverter control parameters are tuned using a genetic algorithm (GA). Numerical results show that the proposed approach increases the damping ratio of the dominant electromechanical mode from 0.03 to 0.18 (a six-fold improvement) and reduces rotor-speed overshoot by nearly 60% under a 10% disturbance. Time-domain simulations further confirm a 70% reduction in settling time for rotor-angle deviations. These results demonstrate that the optimized SFC significantly improves electromechanical damping and strengthens the small-signal stability margin of the islanded microgrid. | ||
| کلیدواژهها | ||
| Islanded microgrid؛ small-signal stability؛ state-feedback controller؛ power system stabilizer؛ genetic algorithm؛ diesel generator dynamics | ||
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آمار تعداد مشاهده مقاله: 56 |
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