College of Electrical Engineering,Zhejiang University Shanghai
State Grid ZhejiangElectric Power Co.,Ltd. Research Institute

在制氢基地中,多台并联的碱液电解槽协调控制共同参与可再生能源的调节是一种未来的主要趋势。然而,随时间变化的可再生能源会对碱液电解槽的温度产生影响,进而导致其额定功率发生变化。在这种情况下,如果持续使用具有恒定下垂系数的下垂控制器,可能会导致碱液电解槽之间出现不合理的功率分配。在现有文献中,这一问题很少被考虑到。为填补这一空白,针对含多台并联碱液电解槽的电解制氢系统提出了一种自适应功率协调控制方法。首先,建立了碱液电解槽的等效电路模型,并绘制出最大电流-温度曲线。在此基础上,提出了温度驱动的下垂系数设置策略。控制系统会定期更新碱液电解槽的模型,并结合其温度实时计算下垂系数。然后,分析了所提控制策略对碱液电解槽热力学特性的影响。最后,在所搭建的电解制氢实验平台上对所提控制策略进行了验证。实验结果表明,所提方法能够实现不同碱液电解槽之间合理的功率分配。

In hydrogen production bases,the coordinated control of multiple parallel alkaline water electrolyzers (AWEs) to jointlyparticipate in the regulation of renewable energy is a major trend in the future. However,renewable energy sources that fluctuate over timecan have an impact on the temperatures of alkaline water electrolyzers,which in turn leads to changes in their rated power. In such asituation,if the droop controller with a constant droop coefficient is continuously used,it may result in an unreasonable powerdistribution among alkaline water electrolyzers. This issue has seldom been considered in the existing literature. To fill this gap,this paperproposes an adaptive power coordination control method for the hydrogen production system with multiple parallel alkaline waterelectrolyzers. Firstly,an equivalent circuit model of alkaline water electrolyzers is established,and the maximum current-temperaturecurve is plotted. On this basis,a temperature-driven droop control strategy is proposed. The control system will periodically update themodel of alkaline water electrolyzers and calculate the droop coefficient in real time by combining with their temperatures. Then,theimpact of the proposed control strategy on the thermodynamic characteristics of alkaline water electrolyzers is analyzed. Finally,theproposed control strategy is verified on the built electrolytic hydrogen production experimental platform. The experimental results showthat the proposed method can achieve a reasonable power distribution among different alkaline water electrolyzers.

国家电网有限公司科技项目资助(4000-202499318A-1-3-ZB)

李立民,申屠磊璇,夏杨红,等.大规模碱液电解制氢系统协调控制策略[J].洁净煤技术,2025,31(3):83−93.

LI Limin,SHENTU Leixuan,XIA Yanghong,et al. Adaptive coordination control strategy for large-scale alkaline waterelectrolysis hydrogen production system[J].Clean Coal Technology,2025,31(3):83−93.