COORDINATED PRIMARY FREQUENCY REGULATION CONTROL STRATEGY OF WIND-THERMAL-STORAGE SYSTEM CONSIDERING OPERATION DIFFERENCE

Yang Tingting; Li Haoqian; Wu Xinyan; Liu Yu; Kang Jingqiu

doi:10.19912/j.0254-0096.tynxb.2024-0220

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (6) : 430-439. DOI: 10.19912/j.0254-0096.tynxb.2024-0220

COORDINATED PRIMARY FREQUENCY REGULATION CONTROL STRATEGY OF WIND-THERMAL-STORAGE SYSTEM CONSIDERING OPERATION DIFFERENCE

Yang Tingting¹, Li Haoqian¹, Wu Xinyan¹, Liu Yu², Kang Jingqiu³

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Abstract

Given the differences between wind and thermal power in frequency regulation （the former is capable of rapid response while the latter possesses sustainable characteristics）, this paper proposes a primary frequency regulation control strategy, which realizes efficient coordination among the two power sources and the energy storage system. Firstly, tailored to the diverse operational states of wind turbines in wind farms, a power distribution strategy based on a frequency regulation reserve factor is introduced, ensuring their safe and effective participation in frequency regulation. Moreover, a fuzzy control-based strategy for coordinating thermal and storage is designed to recover rotor speed. This strategy facilitates rapid and economical restoration of rotor speed, addressing the issue of secondary frequency drops in the system. Simulation results indicate that this strategy effectively achieves the coordinated primary frequency regulation of wind, thermal and storage systems, while ensuring economic benefit and reliability, which takes full advantage of the frequency regulation capacity of wind power, effectively improving the system's frequency characteristics.

Key words

wind power / frequency response / rotor kinetic energy / secondary frequency drop / rotate speed recovery

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Yang Tingting, Li Haoqian, Wu Xinyan, Liu Yu, Kang Jingqiu. COORDINATED PRIMARY FREQUENCY REGULATION CONTROL STRATEGY OF WIND-THERMAL-STORAGE SYSTEM CONSIDERING OPERATION DIFFERENCE[J]. Acta Energiae Solaris Sinica. 2025, 46(6): 430-439 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0220

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