A large-scale power-to-H2-to-power system adopting hydrogen mixed gas turbine for wind accommodation: Process modeling, optimal dispatch and economic feasibility analysis

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-06-10 DOI:10.1016/j.ijhydene.2025.06.034

Yanxin Li , Xiaoqu Han , Yiming Zhang , Nikolaos Skordoulias , Xuanhua Guo , Junjie Yan , Sotirios Karellas , Emmanuel Kakaras

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Abstract

The high percentage of renewable energy penetration poses volatility and intermittency challenges, making it imperative to explore pathways for large-scale green hydrogen production and utilization. In the present work, a novel power-to-H₂-to-power (PtH2tP) system is proposed for onshore wind accommodation, incorporating hydrogen mixed gas turbines (HMGTs). An innovative methodology integrating economic and carbon emissions assessment with optimal dispatch is developed, in which the HMGT off-design operational characteristics and policy compensation for green hydrogen are considered. A case study in China demonstrates the feasibility of the PtH2tP system in achieving flexible energy conversion and hydrogen self-sufficiency. Particularly, a levelized cost of electricity of 0.0537 €/kWh and carbon emissions of 0.29 kg CO₂ eq/kWh are observed. The fuel consumption of HMGTs and purchased grid electricity are significant contributors to carbon emissions. A comprehensive sensitivity analysis indicates an optimal hydrogen substitution ratio of 31% as the threshold for balancing economics and environmental benefits.

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采用氢混合燃气轮机供风的大型电-氢-电系统：过程建模、优化调度及经济可行性分析

可再生能源的高比例渗透带来了波动性和间歇性的挑战，因此必须探索大规模绿色氢生产和利用的途径。在目前的工作中，提出了一种用于陆上风力调节的新型功率- h2 -功率（PtH2tP）系统，该系统包含氢混合燃气轮机（hmgt）。提出了一种将经济和碳排放评估与最优调度相结合的创新方法，该方法考虑了HMGT的非设计运行特征和绿色氢的政策补偿。中国的一个案例研究证明了PtH2tP系统在实现灵活的能量转换和氢自给方面的可行性。特别是，电力成本为0.0537欧元/千瓦时，碳排放量为0.29千克二氧化碳当量/千瓦时。HMGTs的燃料消耗和购买的电网电力是碳排放的重要贡献者。综合敏感性分析表明，平衡经济效益和环境效益的最佳氢替代率阈值为31%。

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.