全球能源互联网（英文）2021，Vol.4Issue(4)：371-383,13.DOI:10.14171/j.2096-5117.gei.2021.04.003
基于电-氢耦合能源模型的氢储能灵活性价值评估
Flexibility improvement evaluation of hydrogen storage based on electricity–hydrogen coupled energy model
摘要
Abstract
To achieve carbon neutrality by 2060, decarbonization in the energy sector is crucial. Hydrogen is expected to be vital for achieving the aim of carbon neutrality for two reasons: use of power-to-hydrogen (P2H) can avoid carbon emissions from hydrogen production, which is traditionally performed using fossil fuels; Hydrogen from P2H can be stored for long durations in large scales and then delivered as industrial raw material or fed back to the power system depending on the demand. In this study, we focus on the analysis and evaluation of hydrogen value in terms of improvement in the flexibility of the energy system, particularly that derived from hydrogen storage. An electricity–hydrogen coupled energy model is proposed to realize the hourly-level operation simulation and capacity planning optimization aiming at the lowest cost of energy. Based on this model and considering Northwest China as the region of study, the potential of improvement in the flexibility of hydrogen storage is determined through optimization calculations in a series of study cases with various hydrogen demand levels. The results of the quantitative calculations prove that effective hydrogen storage can improve the system flexibility by promoting the energy demand balance over a long term, contributing toward reducing the investment cost of both generators and battery storage and thus the total energy cost. This advantage can be further improved when the hydrogen demand rises. However, a cost reduction by 20％ is required for hydrogen-related technologies to initiate hydrogen storage as long-term energy storage for power systems. This study provides a suggestion and reference for the advancement and planning of hydrogen storage development in regions with rich sources of renewable energy.关键词
氢存储/电-氢耦合/优化模型/电制氢/碳中和Key words
Hydrogen storage/Electricity–hydrogen coupling/Optimization model/Power-to-Hydrogen/Carbon neutrality引用本文复制引用
金晨,肖晋宇,侯金鸣,吴晓庆,张瑾轩,杜尔顺..基于电-氢耦合能源模型的氢储能灵活性价值评估[J].全球能源互联网（英文）,2021,4(4):371-383,13.基金项目
This work was supported by National Natural Science Foundation of China(program number 51707108)and Global Energy Interconnection Group Co.,Ltd.Science and Technology Project(2700/2020-75001B). （program number 51707108）
