Multi-timescale optimal scheduling based on wind-solar-hydrogen-salt cavern microgrid system–a case study of salt cavern in Tai’an, China

IF 4.2 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub Date : 2025-07-11 DOI:10.1016/j.epsr.2025.112006

Fei Wu , Peiyao Sun , Renbo Gao , Jianfeng Liu , Cunbao Li , Jie Chen

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Abstract

Renewable energy is vital for global energy reform and achieving carbon neutrality. Wind and photovoltaic power, as the most mature renewable energy technologies, face challenges in efficient utilization due to their inherent volatility. This study proposes a hydrogen-salt cavern integrated system (using Taian salt caverns) to address this issue, establishing a multi-timescale microgrid optimization model solved via the Cplex solver. Results demonstrate that the system enhances renewable energy consumption, improves microgrid revenue, and reduces CO₂ emissions across all scheduling phases. Day-ahead scheduling achieves the highest economic returns, followed by month-ahead scheduling, while intraday scheduling offers greater flexibility despite slightly lower profitability. The method exhibits computational efficiency and generality, validating hydrogen storage’s role in stabilizing renewable integration. This work provides theoretical insights for scaling hydrogen energy applications, emphasizing the synergy of mature renewables and advanced storage to advance the dual-carbon agenda while balancing economic and environmental benefits.

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基于风-太阳能-氢-盐洞穴微电网系统的多时间尺度优化调度——以泰安盐洞穴为例

可再生能源对全球能源改革和实现碳中和至关重要。风能和光伏发电作为最成熟的可再生能源技术，由于其固有的波动性，在高效利用方面面临挑战。针对这一问题，本研究提出了一种氢盐洞穴集成系统（以泰安盐洞穴为例），建立了一个多时间尺度的微电网优化模型，通过Cplex求解器求解。结果表明，该系统提高了可再生能源的消耗，提高了微电网的收益，并减少了所有调度阶段的二氧化碳排放。日前调度获得最高的经济回报，其次是月前调度，而日内调度提供了更大的灵活性，尽管盈利能力略低。该方法显示了计算效率和通用性，验证了储氢在稳定可再生能源集成中的作用。这项工作为扩大氢能应用提供了理论见解，强调了成熟可再生能源和先进储能的协同作用，以推进双碳议程，同时平衡经济和环境效益。

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.