Optimal Scheduling of Hydrogen Energy Storage IES with Dual-fuel Cells

Compared with the traditional integrated energy system (IES), the IES with hydrogen as the energy storage medium combines electrolytic hydrogen storage and fuel cell cogeneration, which can achieve large-scale consumption of renewable energy and obtain considerable carbon emission reduction benefits and economic benefits. In the scenario of regional power supply, solid oxide fuel cell (SOFC) have attracted extensive attention due to their fuel flexibility and high reliability. However, as high-temperature fuel cells, their preheating process takes a long time, which reduces the flexibility of operation and scheduling. In contrast, proton exchange membrane fuel cell (PEMFC) have low operating temperature and good start-stop capability, but poor fuel adaptability. According to the operation characteristics of the two fuel cells, this paper proposes a hydrogen energy storage IES architecture combined with SOFC and PEMFC to play the complementary advantages of the two fuel cells. Firstly, the mathematical model of each equipment is established. Then the day-ahead optimal scheduling model of the system is put forward with economy as the optimization objective. Finally, the advantages of the proposed dual-fuel cells hydrogen energy storage IES are verified based on simulation analysis.