中国电机工程学报2025，Vol.45Issue(13)：5074-5085,中插11,13.DOI:10.13334/j.0258-8013.pcsee.232612
波动工况下PEM电解槽负荷一维机理建模及动态响应
One-dimensional Mechanism Modeling and Dynamic Response of PEM Electrolysis Load Under Fluctuating Conditions
摘要
Abstract
To address the lack of dynamic models for proton exchange membrane electrolyzers that balance high accuracy with computational efficiency when integrated into power systems,this paper proposes a one-dimensional mechanistic modeling method for PEM electrolyzer loads based on fluid dynamics conservation equations.A multiphysics coupled model is established,incorporating U-I characteristic equations,mass transport,and energy transfer processes.The model is solved iteratively using the fourth-order Runge-Kutta method.Simulation results under steady-state,dynamic step,and wind power fluctuation scenarios demonstrate:under steady-state conditions,the cell voltage exhibits positive and negative correlations with pressure and temperature,respectively;the hydrogen in the oxygen stream increases along the flow channel and peaks at the anode outlet.Under dynamic step conditions,the hydrogen content in oxygen presents a non-monotonic transient response,characterized by a rapid increase dominated by electrochemical reactions,followed by a slower stage governed by hydrogen permeation.In wind power fluctuation scenarios,the hydrogen in oxygen is primarily governed by reaction kinetics.Short-term sharp power fluctuations may cause concentration spikes exceeding safety thresholds,while coordinated control of flow rate can mitigate the risk of hydrogen concentration overshoot and reduce potential operational safety hazards of the PEM electrolyzer.关键词
波动工况/质子交换膜电解槽/一维机理模型/偏微分方程组/动态响应Key words
fluctuating condition/proton exchange membrane(PEM)electrolyzer/one-dimensional mechanism model/system of partial differential equations/dynamic response分类
能源科技引用本文复制引用
孔令国,孙佳琦,王士博,韩子娇,闫华光,刘闯,蔡国伟..波动工况下PEM电解槽负荷一维机理建模及动态响应[J].中国电机工程学报,2025,45(13):5074-5085,中插11,13.基金项目
国家自然科学基金项目(52377170). Project Supported by National Natural Science Foundation of China(52377170). （52377170）
