FLUCTUATION SUPPRESSION CONTROL STRATEGY FOR WIND AND SOLAR POWER GENERATION BASED ON ELECTRIC-METHANOL HYBRID ENERGY STORAGE SYSTEM

Li Wen; Bu Fanpeng; Zhang Kang; Zhang Sirui; Zhang Jing; Hou Chenglong

doi:10.19912/j.0254-0096.tynxb.2023-1649

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (2) : 193-199. DOI: 10.19912/j.0254-0096.tynxb.2023-1649

FLUCTUATION SUPPRESSION CONTROL STRATEGY FOR WIND AND SOLAR POWER GENERATION BASED ON ELECTRIC-METHANOL HYBRID ENERGY STORAGE SYSTEM

Li Wen¹, Bu Fanpeng¹, Zhang Kang², Zhang Sirui¹, Zhang Jing¹, Hou Chenglong²

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Abstract

To address the issues of power fluctuations and significant peak-to-valley differences caused by the integration of large-scale uncontrollable renewable energy sources such as wind and solar power into the grid, a hybrid energy storage system based on electric-methanol is proposed. This system combines electrochemical energy storage with methanol production via CO₂ electrolysis, thereby enhancing the operational stability of the power system while simultaneously reducing greenhouse gas emissions through methanol production. Furthermore, in response to the low efficiency of CO₂ electrolysis for methanol production caused by voltage fluctuations in the power system, a novel duty-cycling control strategy based on a methanol electrolyzer is introduced. This strategy optimizes the capacity configuration of the electric-methanol hybrid energy storage system to ensure that the power fluctuations of the power station can meet national regulations.

Key words

electric power systems / wind power / solar energy / power fluctuation stabilization / methanol electrolyzer / hybrid energy storage / coordination control strategy / capacity allocation

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Li Wen, Bu Fanpeng, Zhang Kang, Zhang Sirui, Zhang Jing, Hou Chenglong. FLUCTUATION SUPPRESSION CONTROL STRATEGY FOR WIND AND SOLAR POWER GENERATION BASED ON ELECTRIC-METHANOL HYBRID ENERGY STORAGE SYSTEM[J]. Acta Energiae Solaris Sinica. 2025, 46(2): 193-199 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1649

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