OPTIMAL CAPACITY ALLOCATION OF ELECTRICITY-HYDROGEN HYBRID ENERGY STORAGE CONSIDERING WIND POWER SMOOTHING

Li Jianlin; Ma Jicheng; Sun Haoyuan; Zhang Minhui; Zhao Pu

doi:10.19912/j.0254-0096.tynxb.2024-1074

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (6) : 120-129. DOI: 10.19912/j.0254-0096.tynxb.2024-1074

Special Topics of Academic Papers at the 27th Annual Meeting of the China Association for Science and Technology

OPTIMAL CAPACITY ALLOCATION OF ELECTRICITY-HYDROGEN HYBRID ENERGY STORAGE CONSIDERING WIND POWER SMOOTHING

Li Jianlin, Sun Haoyuan, Zhang Minhui, Zhao Pu, Ma Jicheng

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Abstract

Aiming at the problems of high wind power grid-connection volatility, poor power quality and poor electricity-hydrogen hybrid energy storage capacity allocation, a study on the optimal allocation of electricity-hydrogen hybrid energy storage capacity under wind power smoothing is proposed. Under the typical scenario of wind power, firstly, a variational modal decomposition based on whale algorithm optimization is used to process the wind signal, and combined with the limit value of wind power grid fluctuation, the direct grid connection component and the energy storage to be suppressed component are obtained. Secondly, an energy management strategy based on the actual operating characteristics of alkaline electrolyzers and the actual operating state of electrochemical storage is formulated with full consideration of the characteristics and constraints of hydrogen and electrochemical storage. Based on this strategy, the hybrid electricity-hydrogen storage capacity allocation model is established with the goal of minimizing the annual comprehensive cost of the system while absorbing the energy storage to be levelled off component and solved by the CPLEX solver. The simulation results show that the proposed strategy not only improves the utilization rate of hydrogen storage but also keeps the electrochemical storage in the safe operating range; and that, the capacity allocation scheme under the strategy can achieve better suppression of wind power while meeting the system economics.

Key words

wind power smoothing / variational modal decomposition / electricity-hydrogen hybrid energy storage / alkaline electrolyzer / power ditribution / capacity configuration

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Li Jianlin, Sun Haoyuan, Zhang Minhui, Zhao Pu, Ma Jicheng. OPTIMAL CAPACITY ALLOCATION OF ELECTRICITY-HYDROGEN HYBRID ENERGY STORAGE CONSIDERING WIND POWER SMOOTHING[J]. Acta Energiae Solaris Sinica. 2025, 46(6): 120-129 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1074

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