中文摘要：

随着光伏发电系统大力发展并投入运行，光伏系统故障诊断成为急需解决的问题。总结了当前国内外在光伏系统故障诊断方面的研究成粜，并且根据文献侧重点的不同，将这些方法进行归纳分类，分别是：基于电路结构法、基于数学模型法、基于电气测量法、基于智能检测法、基于红外图像分析法和基于监控系统法。同时对这些故障诊断方法的优、缺点进行了分析和比较。最后探讨了光伏系统故障诊断方法的发展趋势，并总结了一些有待解决的问题。以期为光伏系统故障诊断的研究提供一定的指导和参考。

英文摘要：

In recent years, a large number of photovoltaic power generation systems were put into operation, and it becomes an urgent matter to diagnose photovoltaic devices. Fault diagnosis of photovoltaic system was surveyed systematically. According to the different focus of the documents, these fault diagnosis methods were classified. There are several different methods based on circuit structure, based on analytic model, based on electrical measurement, based on intelligent detection, based on infrared image analysis and based on monitoring system, respectively. Advantages and disadvantages of the methods were summarized. Finally, the trends of the fault diagnosis technologies were discussed and some problems were pointed out to be solved in order to provide guidance to the research of the fault diagnosis in photo voltaic system.