Configuration and Optimization Method for Multi-Group Electrolyzers With High Efficiency, Stability, and Cost-Effectiveness

With the continuous increase in the installed capacity of wind and photovoltaic (PV) renewable energy, the issue of energy consumption has become increasingly prominent. Against this backdrop, the concepts of wind-PV hydrogen production have emerged as new directions to solve the consumption problem. Based on existing engineering experience and industry demands, establishes a hydrogen production system model that comprehensively considers the joint operation of alkaline (ALK) and proton exchange membrane (PEM) electrolyzers, grouped operation of ALK electrolyzers, and rotation operation of ALK electrolyzers. The model can calculate the hourly operational status of the hydrogen production system throughout the year and reflect its technical and economic parameters. Building on this model, a multi-objective function considering hydrogen production efficiency, stability, and economic performance is proposed, and a simple yet effective sequential optimization algorithm is designed accordingly. Case studies demonstrate that the operational model can effectively accommodate highly fluctuating wind-PV power generation, while the optimization algorithm is capable of identifying optimal solutions based on different requirements.