摘要
在IEC 61215-2:2021标准中,已明确规定热斑耐久性试验的详细测试方法(MQT 09),不过该标准中关于电池片漏电流的测试方法,仅针对串联型组件做出规范,对于采用串并串联型镜像并联电路结构的光伏组件而言,此方法的适用性存在局限。为探究这一问题,本文选取具有镜像并联电路结构的半片光伏组件作为研究样本,通过对组件中并联电池串实施完全遮挡的操作,对比分析并联电池串在组件热斑耐久性试验中对电池片漏电流测试结果的影响。试验结果显示,当组件内电池片的漏电流出现显著偏离平均水平的极大值或极小值时,并联电池串的存在不会干扰电池片的选片判断,IEC 61215-2:2021标准中规定的串联型组件热斑耐久性试验方法,同样适用于镜像并联半片组件。
IEC 61215-2:2021(MQT 09)specifies a detailed test method for the hot-spot endurance test,though its cell leakage current measurement is only defined for series-connected PV modules.In this study,a half-cell PV module with a series-parallel-series(SPS)mirrored parallel configuration was selected as the research subject.The impact of parallel cell strings on cell leakage current testing during the hot-spot endurance test was verified by comparing results obtained through complete shading of parallel cell strings.The results show that parallel cell strings do not affect cell selection when dealing with cells whose leakage current significantly deviates from the average(either extremely high or low values).Therefore,the hot-spot endurance test method for series-connected modules specified in IEC 61215-2:2021 is also applicable to half-cell PV modules with SPS mirrored parallel configurations.
作者
叶行方
李沛泽
巫资龙
吴亚盼
焦福强
李旭东
刘丁璞
YE Xingfang;LI Peize;WU Zilong;WU Yapan;JIAO Fuqiang;LI Xudong;LIU Dingpu(China Academy of Information and Communication Technology,Beijing 100080)
出处
《中国建材科技》
2025年第S2期54-59,共6页
China Building Materials Science & Technology
关键词
光伏组件
串并串联
热斑
漏电流
PV module
series-parallel-series connection
cell string
hot-spot
leakage current
