封装胶膜的体积电阻率对光伏组件抗PID性能的影响研究STUDY ON THE INFLUENCE OF VOLUME RESISTIVITY OF ENCAPSULATION FILMS ON THE ANTI-PID PERFORMANCE OF PV MODULES
李达,肖文,郑海兴,吴潮辉,翁军华,姜鹤
摘要(Abstract):
为分析不同体积电阻率的封装胶膜对光伏组件漏电流及抗PID性能的影响,首先挑选了不同分子结构的封装胶膜,测试其体积电阻率;再分别采用不同类型的封装胶膜封装成光伏组件,通过实验设备模拟户外高温高湿恶劣环境,对比了不同类型封装胶膜封装的光伏组件的漏电流及抗PID性能差异。研究结果表明:在相同实验条件(实验箱中环境温度85℃、相对湿度85%,外接-1000 V直流电源,测试时间96 h)下,采用不同分子结构封装胶膜封装的光伏组件表现出不同的抗PID性能;封装胶膜的体积电阻率越高,水蒸气透过率越低,对应的光伏组件的漏电流绝对值越低,光伏组件的抗PID性能越好;光伏组件应用于高温高湿环境中时应优先选择共聚烯烃(POE)封装胶膜。
关键词(KeyWords): 电势诱导衰减;光伏组件;封装胶膜;体积电阻率;水蒸气透过率;抗PID性能;功率衰减率
基金项目(Foundation):
作者(Author): 李达,肖文,郑海兴,吴潮辉,翁军华,姜鹤
DOI: 10.19911/j.1003-0417.tyn20211029.01
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