To address the issues of poor dynamic adaptability in multi-unit coordination during electrolytic hydrogen production

as well as low efficiency and economic performance in the operation of wind-energy storage-hydrogen coupled systems

this paper proposes a three-stage power-state rolling optimization control strategy. First

in the initial stage

this paper develops a battery wind power smoothing strategy based on empirical mode decomposition to enhance the operational stability of the hydrogen production system. Second

based on the smoothed wind power

a multi-unit collaboration optimization model is developed in the second stage

aiming to minimize wind power curtailment

reduce the frequency of unit startups and shutdowns

maximize hydrogen production

and equalize operating time and power fluctuation carrying capacity

thereby optimizing the power distribution among hydrogen production units. In the third stage

correction strategies for the cold start process

standby

and shutdown operating states of the alkaline electrolysis unit are presented

and the optimal production plan for the system is formulated. Finally

through comparative analysis of daily and annual case studies with traditional strategies

the proposed method's effectiveness and superiority are validated in terms of wind power utilization

unit startup and shutdown frequency

operational balance

system efficiency

and economic performance.