Abstract: By analyzing the relationship between the efficiency of electrolyzer and hydrogen production power,this paper proposes a strategy to improve the efficiency of electrolyzer array based on subsection fuzzy control. Based on the scenario of large-scale wind power to hydrogen system,an optimal adjustment model of wind power to hydrogen system considering the efficiency of electrolyzer is established,and the optimal power of hydrogen production is calculated by an artificial bee colony algorithm. The simulation results show that the control strategy proposed in this paper can not only ensure the operation safety of the electrolyzer,but also improve the efficiency of the electrolyzer,providing a theoretical basis for the large-scale electrolyzer of application in the power system. Finally,based on the previous research results,a modular optimization strategy is added to the electrolyzer,enabling the established subsection fuzzy controller to coordinate the safety,economy and energy efficiency,and providing a theoretical basis for the large-scale application of hydrogen energy in the power system.