电网技术2026，Vol.50Issue(1)：中插158,355-364,中插159,12.DOI:10.13335/j.1000-3673.pst.2025.0818
质子交换膜电解槽内部短路故障特性分析及保护策略
Analysis of Internal Short-circuit Characteristics and Protection Strategies for PEM Electrolyzers
摘要
Abstract
Internal short-circuit faults in proton exchange membrane(PEM)electrolyzers develop rapidly and pose severe hazards.Rapid and reliable fault identification is crucial for enhancing hydrogen production system safety.Therefore,this paper investigates the characteristics and protection methods for internal short-circuit faults in PEM electrolyzers.Firstly,based on the fundamental principles of electrolytic hydrogen production and polarization characteristics,an equivalent circuit model for the PEM electrolyzer,which accounts for the electric double-layer capacitance effect,is established.Building upon this,combined with DC-DC converter control strategies,a precise calculation method for the transient and steady-state characteristics of electrolyzer internal short-circuit faults is proposed.Based on fault characteristics,protection criteria utilizing steady-state current variation and the sign feature of power variation are proposed,with their operating boundaries analyzed.Finally,extensive simulations demonstrate that the proposed fault analysis method achieves an average relative error below 5％for transient current and below 1％for steady-state current.The proposed protection strategy accurately identifies internal short-circuit faults in PEM electrolyzers.关键词
可再生能源制氢/质子交换膜电解槽/短路特性/保护策略Key words
hydrogen production from renewable sources/PEM electrolyzer/short-circuit characteristic/protection strategy分类
信息技术与安全科学引用本文复制引用
李斌,范辉,何佳伟,李晔,吴张曦,王海洋..质子交换膜电解槽内部短路故障特性分析及保护策略[J].电网技术,2026,50(1):中插158,355-364,中插159,12.基金项目
国家自然科学基金"双碳"专项项目(52241702) （52241702）
国家自然科学基金青年科学基金项目(52207088).Project Supported by the National Natural Science Foundation of China(No.52241702) （52207088）
the National Natural Science Foundation of China(52207088). （52207088）
