HYBRID ENERGY STORAGE CAPACITY OPTIMIZATION CONFIGURATION STRATEGY CONSIDERING WIND POWER FLUCTUATION SUPPRESSION AND AUXILIARY FREQUENCY MODULATION

Dou Zhenlan; Zhang Chunyan; Tang Fang; Sun Bo; Han Feng; Liu Hua&#x02019;nan

doi:10.19912/j.0254-0096.tynxb.2024-1324

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (12) : 67-75. DOI: 10.19912/j.0254-0096.tynxb.2024-1324

HYBRID ENERGY STORAGE CAPACITY OPTIMIZATION CONFIGURATION STRATEGY CONSIDERING WIND POWER FLUCTUATION SUPPRESSION AND AUXILIARY FREQUENCY MODULATION

Dou Zhenlan¹, Zhang Chunyan¹, Tang Fang², Sun Bo³, Han Feng³, Liu Hua’nan⁴

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Abstract

In order to deal with the fluctuation of wind farm output, ensure the stable operation of power system, and take into account the characteristics of various energy storage devices, a stabilization-frequency modulation strategy based on flywheel-electrochemical hybrid energy storage is proposed. Firstly, according to the typical daily wind power data, the fully adaptive noise ensemble empirical mode decomposition is used to decompose it to obtain the direct grid-connected component of wind power and the hybrid energy storage power task. Secondly, considering the multi-type constraints of the energy storage system, taking the maximum annual overall net income of the wind storage system as the objective function, a capacity optimization configuration model of flywheel-electrochemical hybrid energy storage considering wind power stabilization and frequency modulation is established. Finally, the optimal capacity configuration scheme of hybrid energy storage is obtained by iterative solution of adaptive particle swarm optimization algorithm. The results show that compared with the traditional hybrid energy storage system that only stabilizes the fluctuations of wind power, although the investment cost of this hybrid energy storage system has increased, it will also generate higher frequency regulation benefits, which can effectively give full play to the advantages of energy storage stabilization-frequency regulation, and the average annual overall net income of the system is improved, which proves that the strategy proposed in this paper has better economy and feasibility.

Key words

hybrid energy storage / wind farm / fluctuation smoothing / frequency regulation / modal decomposition / capacity configuration

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Dou Zhenlan, Zhang Chunyan, Tang Fang, Sun Bo, Han Feng, Liu Hua’nan. HYBRID ENERGY STORAGE CAPACITY OPTIMIZATION CONFIGURATION STRATEGY CONSIDERING WIND POWER FLUCTUATION SUPPRESSION AND AUXILIARY FREQUENCY MODULATION[J]. Acta Energiae Solaris Sinica. 2025, 46(12): 67-75 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1324

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