Electric Power Research Institute of State Grid Jiangsu Electric Power Corporation
Compared with electricity, hydrogen is easier to store and can play an important role in the high renewable energy integration. This paper focuses on the influence of hydrogen demand (flexible hydrogen demand) at different time scales on the optimization of regional integrated energy systems. In the modelling of regional integrated energy systems, the uncertainty of renewable energy output, demand-side response and flexible hydrogen demand are mainly considered. Based on hourly annual electricity load demand and photovoltaic output data, we studied the impact of hydrogen demand at different time scales under different photovoltaic penetration levels on the optimal dis-patch of regional integrated energy systems, with the goal of minimizing the annual operating cost of the system. The results show that as the time scale of hydrogen demand gradually increases (the storage capacity of the terminal gradually increases), the system economy gradually improves, and the effect is significant in terms of equipment operation, transaction with the upper-level grid, and demand-side response.