Experimental studies of fault location in PV module strings
Experimental studies of fault location in PV module strings
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DOI：
10.1016/j.solmat.2008.11.060
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发表时间：
2009-06
影响因子：
6.9
通讯作者：
T. Takashima;J. Yamaguchi;K. Otani;T. Oozeki;K. Kato;M. Ishida
中科院分区：
文献类型：
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作者：
T. Takashima;J. Yamaguchi;K. Otani;T. Oozeki;K. Kato;M. Ishida
对光伏组件串故障定位的两种方法进行了实验研究。一种是对地电容测量法（ECM），另一种是时域反射法（TDR）。该方法利用对地电容值来估计串中断线位置，不受辐照度变化的影响，估计误差小，可用于实际检修中断线位置的确定。另一方面，TDR可以通过响应波形的变化来检测劣化（串联电阻增加）和串中的位置。
Two methods for the fault location in PV module string were experimentally studied. One was the earth capacitance measurement (ECM) and the other was the time-domain reflectometry (TDR). By ECM, the disconnection position in the string was estimated by the earth capacitance value without the effects of the irradiance change, and the estimation error was small enough to determine the disconnection position in actual repair/maintenance operation. On the other hand, TDR could detect the degradation (series resistance increase) and the positions in the string by the change of response waveform.