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Flexibility improvement evaluation of hydrogen storage based on electricity-hydrogen coupled energy model

Global Energy Interconnection 2021年第4期4卷 371-383页

作者： Chen Jin Jinyu Xiao Jinming Hou Xiaoqing Wu Jinxuan Zhang Ershun Du Global Energy Interconnection Group Co. Ltd.Beijing 100031P.R.China Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Jinan 250061P.R.China Laboratory of Low Carbon Energy Tsinghua UniversityBeijing 100084P.R.China

To achieve carbon neutrality by 2060,decarbonization in the energy sector is *** 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 *** 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 *** electricity-hydrogen coupled energy model is proposed to realize the hourly-level operation simulation and capacity planning optimization aiming at the lowest cost of *** 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 *** 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 *** advantage can be further improved when the hydrogen demand ***,a cost reduction by 20%is required for hydrogen-related technologies to initiate hydrogen storage as long-term energy storage for power *** 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： hydrogen storage electricity-hydrogen coupling Optimization model Power-to-hydrogen Carbon neutrality

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