风氢耦合发电系统建模与分析

Modeling and analysis of wind-hydrogen coupled power generation system

通过分析风氢耦合发电系统和各关键设备的工作原理,建立了风力发电模型、碱式电解槽模型、压缩机储氢罐模型以及质子交换膜燃料电池模型。研究了碱式电解槽工作温度对其输出电压、电流和功率的影响,质子交换膜燃料电池工作温度和阴阳两极气体压力对其输出电压和功率的影响,从而分析了制氢模块和发电模块的工作性能对风氢耦合发电系统性能的影响。通过模拟仿真研究风速、碱式电解槽工作温度和质子交换膜燃料电池工作温度对系统发电量的影响。结果表明:适当提高碱式电解槽的工作温度可增大其工作电流,从而提高制氢模块的制氢量;提高质子交换膜燃料电池的工作温度和阴阳两极气体压力可提高其输出电压和输出功率,从而增加发电模块的发电量,进而提升风氢耦合发电系统的工作性能。

By analyzing the working principle of wind-hydrogen coupled power generation system and key equipment,the wind power generation model,basic electrolyzer model,compressor hydrogen storage tank model and proton exchange membrane fuel cell model are established.The influences of the working temperature of the basic electrolyzer on its output voltage,current and power,and the influences of the working temperature of the proton exchange membrane fuel cell and the gas pressure at the anode and cathode on its output voltage and power,are studied.Thus,the influences of the working performance of the hydrogen production module and the power generation module on the performance of the wind hydrogen coupled power generation system are analyzed.The influences of wind speed,working temperature of basic electrolyzer and working temperature of proton exchange membrane fuel cell on power generation of the system are studied through simulation.The results show that,properly increasing the working temperature of the basic electrolyzer can increase its working current,thus to increase the hydrogen production capacity of the hydrogen production module.Increasing the working temperature and gas pressure at the anode and cathode can increase the output voltage and power of the proton exchange membrane fuel cell,thus to improve the power generation capacity of the power generation module and enhance the working performance of the wind hydrogen coupled power generation system.