Coordinated scheduling of wind-solar-hydrogen-battery storage system for techno-economic-environmental optimization of hydrogen production

Wang, Jingbo, Wen, Jianfeng, Wang, Jiarong, Yang, Bo and Jiang, Lin ORCID: 0000-0001-6531-2791 (2024) Coordinated scheduling of wind-solar-hydrogen-battery storage system for techno-economic-environmental optimization of hydrogen production Energy Conversion and Management, 314. p. 118695. ISSN 0196-8904, 1879-2227

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Abstract

Green hydrogen production powered by renewable energy emerges as a promising alternative to reduce emissions in the context of the global Net Zero target. Nevertheless, the inherent randomness and intermittency of renewables such as wind and solar cause prominent fluctuations in power supply to water electrolyzers, which pose challenges to their operational stability and efficiency, leading to decreased performance and shortened lifespan. To address these challenges, coordinated operation scheduling of the renewables-hydrogen system with multi-electrolyzers is investigated to enhance the system's stability and efficiency while contributing to higher cost-effectiveness and sustainability. Meanwhile, the battery storage system is incorporated as a buffer to mitigate the variability of renewable power output and as a supplement to alkaline electrolyzers (AEL). This study also designs a dung beetle optimizer-gated recurrent unit (DBO-GRU) model for wind-solar power forecasting, offering guidance for more efficient and adaptive scheduling of AEL operations. To achieve multi-optimized scheduling of this integrated energy system, a refined rolling optimization strategy is developed, considering technical, economic, and environmental benefits to comprehensively improve green hydrogen production. Case studies using real-world scenarios validate its superiority across multiple time scales. For instance, compared with two other scheduling methods, the results show that the proposed strategy can respectively increase hydrogen production, reduce start-stop cycles, decrease LCOH, and lower carbon emissions by up to 4.19%, 25.40%, 7.98%, and 5.71% over a yearly-long operation. Therefore, the refined rolling optimization strategy simultaneously improves the overall system efficiency, operational cost-effectiveness, and sustainability of hydrogen production, underscoring its advantages and significance.

Item Type:	Article
Uncontrolled Keywords:	Green hydrogen, Wind-solar-hydrogen system, Alkaline electrolyzer, Coordinated scheduling strategy, Techno-economic-environmental evaluation, Refined rolling optimization
Depositing User:	Symplectic Admin
Date Deposited:	01 Jul 2024 10:01
Last Modified:	28 Feb 2026 13:22
DOI:	10.1016/j.enconman.2024.118695
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3182534
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