Coordinated Optimal Configuration of Hybrid Energy Storage for Microgrids with Differentiated Requirements on Both Source and Load Sides

ZHANG Jiyuan, LIU Yang, LI Huaqiang, ZENG Youxin

Electric Power Construction ›› 2026, Vol. 47 ›› Issue (7) : 154-166.

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PDF(2347 KB)
Electric Power Construction ›› 2026, Vol. 47 ›› Issue (7) : 154-166. DOI: 10.12204/j.issn.1000-7229.2026.07.012
Renewable Energy and Energy Storage

Coordinated Optimal Configuration of Hybrid Energy Storage for Microgrids with Differentiated Requirements on Both Source and Load Sides

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Abstract

[Objective] To address the challenge of achieving coordinated optimization in peak-valley load regulation, which is caused by power fluctuations from renewable energy integration and diverse user energy demands in a microgrid, this paper proposes a coordinated optimal configuration method for a hybrid energy storage system (HESS) considering the differentiated requirements on both source and load sides. [Methods] First, an improved empirical mode decomposition (EMD) method is presented to divide the distributed generation (DG) output power into high-, medium-, and low-frequency bands. By considering the economic and technical characteristics of different energy storage types, power allocation of the HESS is realized across multiple time‑frequency domains. Second, a coordinated optimal configuration model for source-load sides HESS in a microgrid is constructed. This model considers source side indicators, specifically the maximum power fluctuation indicator and the renewable energy integration rate indicator, as well as the load side indicator of the peak-to-valley difference reduction rate. Finally, a coordinated optimization solution algorithm based on the improved alternating direction method of multipliers (ADMM) is presented to achieve the distributed optimal solution of the HESS coordinated optimal configuration model. [Results] Simulation results demonstrate that, while ensuring favorable economic performance, the presented method effectively mitigates DG output fluctuations and accomplishes load peak-cutting and valley-filling. Through coordinated source-load sides optimization, a high renewable energy integration rate of 99% is achieved, and the peak-to-valley difference reduction rate reaches 84.94%. [Conclusions] The proposed coordinated optimal configuration method effectively enhances the capability of the microgrid for renewable energy accommodation and its regulation capacity over load peak-to-valley differences. It provides a theoretical foundation and technical reference for the rational configuration of HESS in a microgrid.

Key words

microgrid / hybrid energy storage / coordinated optimal configuration / maximum power fluctuation / renewable energy accommodation rate / peak-to-valley difference reduction rate

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ZHANG Jiyuan , LIU Yang , LI Huaqiang , et al. Coordinated Optimal Configuration of Hybrid Energy Storage for Microgrids with Differentiated Requirements on Both Source and Load Sides[J]. Electric Power Construction. 2026, 47(7): 154-166 https://doi.org/10.12204/j.issn.1000-7229.2026.07.012

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Footnotes

利益冲突声明(Conflict of Interests): 所有作者声明不存在利益冲突。

作者贡献声明(Authors' Contributions): 张继元负责提出并构建论文的核心概念与基本框架,设计整体结构,主导模型构建与仿真分析工作,并撰写论文初稿;刘洋统筹并指导整个研究过程,负责审核论文的内容逻辑与技术细节,并参与终稿的修改;李华强参与论文的修订,并对关键术语的表述进行润色;曾佑鑫参与论文的写作与修订工作。所有作者均阅读并同意论文终稿内容。

Funding

National Natural Science Foundation of China(52377115)
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