滩涂光伏电站遭海水浸泡后组件失效分析*
曾 飞 林荣超 梁广文 董双丽(广东产品质量监督检验研究院,广东省佛山市 528300)
吴 淼(广东华矩检测技术有限公司,广东省佛山市 528300)
边松涛(广东产品质量监督检验研究院,广东省佛山市 528300)
李 帅(广东华矩检测技术有限公司,广东省佛山市 528300)
胡振球(广东产品质量监督检验研究院,广东省佛山市 528300)
Failure Analysis of Modules after Seawater Immersion of Tidal‑flat Photovoltaic Power Station*
ZENG Fei LIN Rongchao LIANG Guangwen DONG Shuangli
(Guangdong Testing Institute of Product Quality Supervision,Foshan 528300,Guangdong Province,China)
WU Miao(Guangdong Huaju Testing Tech. Co.,Ltd.,Foshan 528300,Guangdong Province,China)
BIAN Songtao(Guangdong Testing Institute of Product Quality Supervision,
Foshan 528300,Guangdong Province,China)
LI Shuai(Guangdong Huaju Testing Tech. Co.,Ltd.,Foshan 528300,Guangdong Province,China)
HU Zhenqiu(Guangdong Testing Institute of Product Quality Supervision,
Foshan 528300,Guangdong Province,China)
Abstract:Failure of modules after seawater immersion of a tidal‑flat photovoltaic power station in the coastal area of North China is studied. Inspections are carried out in the power station site and laboratory for testing multiple items,including appearance inspection,electroluminescent(El),maximum power,
insulation test,wet leakage current test and potential induced degradation(PID) test,and the results are statistically analyzed. The test results show that seawater immersion has a certain adverse effect on the performance of the modules.15‑day seawater immersion results in failure of some modules such as damages of junction boxes,diodes,and connectors,as well as broken glass,etc. The risk of wet leakage failure is quite high,but has limited impact on the maximum power and insulation resistance. In addition,the modules of the Project before and after seawater immersion generally do not have PID-resistant capability.
Key words:seawater immersion;photovoltaic module;visual inspection;electroluminescent(El);maximum power measurement; insulation test;wet leakage current test;potential induced degradation(PID)test
摘 要:研究华北沿海地区某个受海水浸泡的滩涂光伏电站中组件失效情况,分别在电站现场和实验室进行检测,检测项目包括外观检查、电致发光(EL)、最大功率测量、绝缘测试、湿漏电流测试和电势诱导衰减(PID)试验,并对结果进行统计分析。检测结果发现:海水浸泡对组件性能造成一定的不良影响,15天海水浸泡导致部分组件出现接线盒、二极管、接头损坏、玻璃破碎等失效,湿漏电流失效风险很高,但对最大功率和绝缘电阻的影响不大;此外,该项目海水浸泡前后的组件普遍均不具备抗PID能力。
关键词:海水浸泡;光伏组件;外观检查;电致发光;最大功率测量;绝缘测试;湿漏电流测试;电势诱导衰减试验
中图分类号:TK514 文献标识码:A
doi:10.3969 / j. issn.1003 - 8493.2021.02.013