Optimal Capacity Configuration of Hydrogen Storage Systems Connecting the Electricity-Heat Network

The goals of emission peak and carbon neutrality dictate the importance for the development of the new power system based on the renewable energy sources (RESs). It is significant to install the large-scale energy storages (LESs) because of the peak and frequency modulation problems, causing by the substantial increase of RESs in the power system. Compared with the traditional LESs, the hydrogen storage system (HSS) lies in the ability of cogeneration, fast response, long-term and clean storage. Whitin this context, in order to investigate the role of the HSS in the new power system, an optimal capacity configuration for seasonal HSS in electricity-heat network (EHN) is proposed in this paper. What's more, the seasonal storage ability of HSS is considered and analyzed in terms of the carbon emissions, investment cost and operation cost. Finally the corresponded case studies are analyzed. Simulation results reveal that, compared with the conventional storage the HSS can effectively improve the comprehensive energy efficiency and renewable energy comsumption of the EHN, reduce carbon emissions and energy consumption simultaneously.