| 摘要: |
| 目的 旨在建立光伏波动条件下多质子交换膜（PEM）电解槽协同运行的动态模型，为规模化制氢系统优化提供理论依据。方法 根据电化学原理，采用Aspen Custom Modeler软件建立PEM电解槽模型，并将其作为子程序集成到Aspen Plus，在Aspen Plus中选用ELECNRTL物性计算方法及合适的单元模块，搭建了组合多个20 m3/h级的PEM电解制氢工艺流程。计算中将系统电流密度设置成随着光照强度变化，以电流密度的阶跃变化来模拟可再生能源波动的场景。结果 组合2、3和4个电解槽时，系统最终平均产氢速率分别为41.03、61.55和82.07 m3/h，分离与精制过程中的氢气损失均为3.9%，PEM电解槽能耗为4.504 kW·h/m3，与中国电力工程顾问集团某示范工程现场数据的4.509 kW·h/m3对比，相对误差控制在0.1%。结论 在实际运行中，利用多个电解槽组合运用机制，若因光照较弱而导致系统输入功率下降，可停用部分PEM电解槽。研究结果可为实际光伏电解水制氢工艺提供理论参考。 |
| 关键词: 质子交换膜电解 Aspen建模 光伏制氢 动态模拟 |
| DOI：10.3969/j.issn.1007-3426.2025.03.011 |
| 分类号:TK |
| 基金项目:中国电力工程顾问集团有限公司科技项目“光伏水电解制氢技术研究与应用示范” （DG3-A03-2022） |
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| photovoltaic-coupled modular PEM electrolyzer hydrogen production technology |
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WANG Lu1, XU Zhiliang1, JIN Hao2, REN Yuchen2, CHEN Xiaowei1, QI Qi1
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1.East China Electric Power Design Institute Co., Ltd., China Power Engineering Consulting Group, Shanghai, China;2.School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
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| Abstract: |
| Objective The study aims to establish a dynamic simulation model for coordinated operation of multiple proton exchange membrane(PEM) electrolyzers under photovoltaic power fluctuations, providing theoretical foundations for optimizing large-scale hydrogen production systems. Method In accordance with electrochemical principles, the Aspen Custom Modeler software was employed to develop a model for the PEM electrolysis cell. Subsequently, this model was integrated as a sub-routine into the Aspen Plus software environment. In Aspen Plus, ELECNRTL physical property calculation method and appropriate module were used to build a combination of multiple 20 m3/h level PEM electrolytic hydrogen production processes. In the calculation, the system's current density was set to change with the light intensity, and the step change of current density was used to simulate the fluctuation of renewable energy. The hydrogen production process of combining two, three, and four 20 m3/h PEM electrolysis cells. Result It was resulted in an average hydrogen production rate of 41.03 m3/h, 61.55 m3/h, and 82.07 m3/h, respectively. The hydrogen loss during separation and refining was around 3.9%, and the energy consumption of the PEM electrolysis cell was 4.504 kW·h/m3. Compared with the on-site data of 4.509 kW·h/m3 from a demonstration project of China Power Engineering Consulting Group, the relative error was controlled at 0.1%. Conclusion In actual operation, utilizing the mechanism of combining multiple electrolytic cells can make it possible to selectively disable some PEM electrolysis cells when the input power of the system decreases due to weak light, effectively deal with the uncertainty of renewable energy output, and improve the system energy conversion rate. The research results can provide a theoretical reference for the actual photovoltaic water electrolysis process for hydrogen production. |
| Key words: proton exchange membrane electrolysis Aspen modeling photovoltatic hydrogen production dynamic simulation |
