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A field-applicable health monitoring method for photovoltaic system

机译:光伏系统的现场健康监测方法

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Solar cell modules are connected in series and parallel in a photovoltaic system. All the solar cell modules degrade over time and the most degraded module in a string decides the output level of the string. In this study, we suggest a health monitoring method which enables to detect the most degraded module in a string without separating the module from the string. The method places a non-transparent film on a module in a string to make an artificial shading effect and monitors the current-voltage curve of the string while placing the film to the next one. We show analytically that the most degraded module can be detected by comparing all the string current-voltage curves. We demonstrate the method on an outdoor photovoltaic string. (C) 2018 Elsevier Ltd. All rights reserved.
机译:太阳能电池模块在光伏系统中串联和并联连接。所有太阳能电池模块均会随着时间的流逝而退化,而串中退化程度最高的模块将决定该串的输出水平。在这项研究中,我们建议一种健康状况监视方法,该方法可以检测字符串中降解最严重的模块,而无需将模块与字符串分离。该方法将不透明的膜以串的形式放置在模块上,以产生人工遮蔽效果,并在将膜放置到下一个膜的同时监视串的电流-电压曲线。我们通过分析表明,通过比较所有串电流-电压曲线,可以检测出性能最差的模块。我们在室外光伏串上演示了该方法。 (C)2018 Elsevier Ltd.保留所有权利。

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