Open Access

ARTICLE

Optimized Operation Method for Microgrid Electricity-Hydrogen Hybrid Energy Storage Considering Electrolyzer Arrays and Energy Management Strategy

He Wang, Yuyan Wang, Jing Bian^*, Huanan Yu
Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education (Northeast Electric Power University), Jilin, China
* Corresponding Author: Jing Bian. Email:

Energy Engineering https://doi.org/10.32604/ee.2026.076766

Received 26 November 2025; Accepted 12 January 2026; Published online 26 January 2026

Abstract

Addressing the challenges of peak shaving and curtailment caused by integrating a large amount of renewable energy into the grid, this paper proposes an optimized operation method for microgrid electricity-hydrogen hybrid energy storage (EH-HES), which considers electrolyzer arrays and an energy management strategy (EMS). Firstly, the time span of the energy-rich season and the energy-poor season is determined through time series decomposition, and a hydrogen energy storage (HES) operation mode based on seasonal typical scenarios is proposed. Secondly, the key equipment for EH-HES is modeled, including the hybrid electrolyzer arrays model that considers rotation strategy and the cascaded hydrogen storage tank (HST) model, which accounts for both long-term and short-term storage. Next, an EMS for EH-HES is proposed, taking into account the operating conditions of the electrolyzer arrays. The transition between the three operating states of the electrolyzer arrays is managed through rapid charging and discharging of the battery (BT), optimizing the interaction between electrical energy storage (EES) and HES. Finally, a two-layer optimized operation model for EH-HES is constructed. The upper layer model aims to minimize the total annual system cost by optimizing energy storage capacity, while the lower layer model focuses on minimizing the levelized cost of hydrogen energy storage (LCHS) through optimized operation. Simulation results indicate that the proposed method can decrease the system power curtailment rate by 10.93%, boost green hydrogen production by 5.7%, and effectively enhance renewable energy consumption.

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Keywords

Hybrid energy storage; electrolyzer arrays; EMS; optimize operation; microgrid

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