ANALYSIS OF ULTRA-LOW FREQUENCY OSCILLATIONS AND COLLABORATIVE OPTIMIZATION OF CONTROL PARAMETERS FOR HYDRO-WIND COMPLEMENTARY SYSTEM

Zhang Yudong; Liu Fusuo; Tang Fan; Lyu Yazhou; Li Xin; Liang Xiaobin

doi:10.19912/j.0254-0096.tynxb.2024-0558

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (4) : 232-239. DOI: 10.19912/j.0254-0096.tynxb.2024-0558

ANALYSIS OF ULTRA-LOW FREQUENCY OSCILLATIONS AND COLLABORATIVE OPTIMIZATION OF CONTROL PARAMETERS FOR HYDRO-WIND COMPLEMENTARY SYSTEM

Zhang Yudong¹, Liu Fusuo², Tang Fan¹, Lyu Yazhou², Li Xin¹, Liang Xiaobin¹

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Abstract

A coordinated optimization method of control parameters for hydro-wind complementary systems is proposed to suppress ultra-low-frequency oscillations. Firstly, the sensitivity of ultra-low-frequency oscillations to the control parameters of the hydro turbine governor is analyzed using the torque analysis method. Then, based on a hydro-wind complementary system model, the impact of wind power frequency control parameters on the damping of hydro units is investigated. Furthermore, a coordinated optimization model of control parameters is developed, the second-order oscillatory particle swarm optimization algorithm is introduced to optimize the PID parameters of the hydro turbine governor and the PD parameters of wind power frequency control. Finally, the proposed coordinated optimization approach is analyzed and validated using an improved four-machine, eleven-bus test system. Simulation results demonstrate that the optimized control parameters effectively suppress ultra-low-frequency oscillations in the hydro-wind complementary system.

Key words

power system / ultra-low frequency oscillation / parameter optimization / damping / hydro-wind complementary system

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Zhang Yudong, Liu Fusuo, Tang Fan, Lyu Yazhou, Li Xin, Liang Xiaobin. ANALYSIS OF ULTRA-LOW FREQUENCY OSCILLATIONS AND COLLABORATIVE OPTIMIZATION OF CONTROL PARAMETERS FOR HYDRO-WIND COMPLEMENTARY SYSTEM[J]. Acta Energiae Solaris Sinica. 2025, 46(4): 232-239 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0558

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