基于最优传感器配置的光伏阵列故障诊断  

Photovoltaic(PV) Array Fault Diagnosis Strategy Based on Optimal Sensor Placement

作　　者：胡义华[1] 陈昊[1] 徐瑞东[1] 李瑞[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏省徐州市221008

出　　处：《中国电机工程学报》2011年第33期19-30,共12页Proceedings of the CSEE

基　　金：江苏省"六大人才高峰"资助项目(07-D-024);江苏省研究生培养创新工程(CX09B_114Z)~~

摘　　要：对光伏阵列在不同故障态下的输出特性进行仿真,总结了光伏阵列在故障下输出特性的变化规律。分析了基于支路电流检测与电池板电压检测相结合的故障诊断策略,对比了3种电压传感器放置方法,优化设计了传感器放置策略。将光伏阵列等效为矩阵,建立了权值节点矩阵,提出了基于权值边覆盖的最优电压传感器放置方法,并在此基础上以3×3光伏阵列为例,分析了各种故障下电压传感器的特征值。在故障诊断的基础上,提出了阴影影响下光伏阵列多极值点最大功率点跟踪控制策略。通过搭建光伏阵列对所提的最优传感器配置方法和最大功率点跟踪方法进行了验证,实验结果验证了所提方法的正确性。Photovoltaic （PV） array output characteristics under fault conditions were simulated, the changing regularity of them was summarized. Fault diagnosis method based on branch current and PV module voltage detection was studied, three different voltage sensor placement methods were compared and the optimal sensors placement method was designed. PV array was equivalent to matrix, and weight matrix was established. This paper proposed a method of optimal voltage sensor placement based on covering all weight nodes. By the proposed method, a 3x3 PV array was researched, and voltage sensor characteristic values under different fault conditions were also measured. On the base of PV array fault diagnosis method, this paper also proposed maximum power point tracking （MPPT） strategy under shadow. Experimental results were presented to validate the proposed method.

关 键 词：光伏阵列 阴影 故障诊断 最大功率点跟踪 

分 类 号：TM914[电气工程—电力电子与电力传动]