计及秒级响应特性的混合电解制氢系统功率分配策略

In view of the fact that the existing electrolyzer models mostly describe their operational characteristics at the hour-levelor minute-level timescales, and fail to fully explore their second-level response characteristics, leading to low operation efficiencyand insufficient capacity for renewable energy accommodation, an optimal power allocation strategy for alkaline (ALK) electrolyzerand proton exchange membrane (PEM) electrolyzer combined hydrogen production system considering the second-level responsecharacteristics of the electrolyzers is proposed. Firstly, the operation mechanisms of ALK and PEM electrolyzers are analyzed, andtheir power-efficiency curves are drawn. Secondly, based on the highest efficiency point, rated power point and overload powerpoint on the curves, and considering the operation costs, single-cell capacity, response performance of the two types ofelectrolyzers, as well as the second-level start-stop and second-level regulating characteristics of PEM electrolyzers, an optimalpower allocation strategy for the ALK-PEM hybrid electrolytic hydrogen production system is formulated. On this basis, combinedwith the dual-layer array rotation operation rules of multi-electrolyzer, the reasonable power distribution of the array betweengroups in the hybrid electrolytic hydrogen production system is achieved. Finally, by taking the actual data of a demonstrationproject in Heilongjiang Province of China as an example, it is verified that the proposed optimal power allocation strategy for ALKPEM electrolyzers can promote renewable energy accommodation while increasing the hydrogen production revenue. © 2026 Automation of Electric Power Systems Press.