Optimal configuration method of hydrogen energy system for coordinated operation of multi-type electrolyzers for new energy consumption

Abstract

The problem of absorption of new energy, such as wind and solar power, into the power system is becoming increasingly serious. How to improve the economic benefits of hydrogen energy system while using it to help the absorption of new energy is a practical problem that needs to be addressed in the development of hydrogen-electric coupling. The paper proposes a method for optimizing the capacity of a hydrogen energy system through the cooperative operation of alkaline electrolyzers and proton exchange membrane electrolyzers. First, a wind-solar-hydrogen energy system is constructed, and the mechanisms of each component are analyzed. Second, considering the operational characteristics of the electrolyzer, a power distribution strategy for the hybrid electrolyzers is proposed. Subsequently, the optimal configuration model of wind-solar-hydrogen energy system is established with the maximum profit of the system as the optimization objective. Finally, an industrial park system in northwest China is taken as an example to verify the feasibility of the optimal configuration method. The results indicate that the coordinated operation of alkaline electrolyzers and proton exchange membrane electrolyzers significantly enhances the absorption of wind-solar power in the power system, demonstrating promising application potential.