To enhance the safety and energy conversion efficiency of renewable energy-coupled hydrogen production systems
this study proposes an optimization control method for dual-channel hydrogen production systems in multi-source scenarios based on Petri nets. Considering the varying adaptability of different hydrogen production equipment to fluctuating inputs
a hybrid hydrogen production system architecture comprising alkaline electrolyzers
proton exchange membrane electrolyzers
and fuel cells is constructed. A robust empirical mode decomposition algorithm is employed to decompose the coupled wind-solar output power. Based on the lower limit value value of the power carried by the electrolyzers and cold start time of the electrolyzers
dual-channel electrolyzer start-stop control rules are formulated
establishing a Petri net-based optimization control model for dual-channel electrolyzers. The effectiveness of this method is validated through simulation examples using actual operational data from a wind and photovoltaic power plant. Compared to single-channel hydrogen production systems
the dual-channel approach enhances energy conversion efficiency to 61.52%
reduces alkaline electrolyzer start-stop frequency
and improves both safety and economic performance of the hydrogen production system.
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School of Environmental & Biological Science & Technology,Dalian University of Technology,Key Laboratory of Industrial Ecology and Environmental Engineering,MOE