可再生能源电解制氢宽范围运行控制策略  

WIDE RANGE OPERATION CONTROL STRATEGY FOR ELECTROLYSIS HYDROGEN PRODUCTION BASED ON RENEWABLE ENERGY

作　　者：夏杨红 胡致远 韦巍[1,2] 赵波 章雷其 Xia Yanghong;Hu Zhiyuan;Wei Wei;Zhao Bo;Zhang Leiqi(College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China;Zhejiang Province Marine Renewable Energy Electrical Equipment and System Technology Research Laboratory,Hangzhou 310027,China;State Grid Zhejiang Electric Power Corporation Research Institute,Hangzhou 310014,China)

机构地区：[1]浙江大学电气工程学院,杭州310027 [2]浙江省海洋可再生能源电气装备与系统技术研究重点实验室,杭州310027 [3]国网浙江省电力公司电力科学研究院,杭州310014

出　　处：《太阳能学报》2024年第8期34-43,共10页Acta Energiae Solaris Sinica

基　　金：国家重点研发计划(2020YFB1506800);国网科技项目(52110421005H);浙江省“领雁”计划(2022C01161)。

摘　　要：首先分析碱液电解制氢低载低效率的机理,发现通过重塑激励电场可有效提升系统低载效率。基于此,提出多模态自寻优(MMSO)电解制氢变流技术及其对应的变流器原理样机,并将所提控制策略应用于光伏直驱的2 Nm^(3)/h碱液电解槽(约10 kW)。发现相比于传统直流供电策略,所提策略具有以下优势:1)低载工况下,MMSO电解制氢变流控制策略最大效率提升超过两倍;2)效率≥50%约束下,系统运行范围从30%~100%扩大至10%~100%;3)碱液电解槽可全范围跟踪可再生能源出力。This paper analyzes the inefficiency mechanism of low-load alkaline water electrolyzers(AWEs).It is found that through modifying the excitation electric field,the low-load performance of AWEs can be greatly enhanced.Based on this,a multi-modal selfoptimization(MMSO)control strategy and the corresponding prototype converter are proposed.The effectiveness of the proposed method is verified by a 2 Nm^(3)/h AWE(about 10 kW)directly driven by PV arrays.Experimental results show that compared to the conventional DC power supply,1)the maximum efficiency improvement can exceed two times,2)under the constraint of efficiency≥50%,the system operation is enhanced from 30%-100%to 10%-100%of rated load;3)the AWE can follow the fluctuating PV power well.

关 键 词：可再生能源 制氢 电解槽 能量效率 波动制氢 宽范围运行 

分 类 号：TK91[动力工程及工程热物理]