基于矩阵扰动法和传感器优化配置的光伏阵列故障定位方法  

PHOTOVOLTAIC ARRAY FAULT LOCATION METHOD BASED ON MATRIX PERTURBATION METHOD AND SENSOR OPTIMAL CONFIGURATION

作　　者：陈伟[1] 丁聪 裴婷婷 张馨尹 Chen Wei;Ding Cong;Pei Tingting;Zhang Xinyin(College of Electrical and Information Engineering,Lanzhou University Of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学电气工程与信息工程学院,兰州730050

出　　处：《太阳能学报》2025年第1期641-653,共13页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51767017,51867015);甘肃省基础研究创新群体项目(18JR3RA133);甘肃省自然科学基金(21JR7RA258)。

摘　　要：针对现有光伏阵列故障定位方法难以同时考虑组件的定位精度与成本的问题,提出一种基于信息熵原理的传感器优化配置法和矩阵扰动法的光伏阵列故障定位方法。首先根据光伏系统在不同故障状态下的特征数值,通过基于信息熵的传感器配置方法布置传感器并获取光伏阵列侧的输出值;然后构建响应矩阵并将矩阵的迹与谱半径作为故障特征,以响应矩阵的迹与谱半径随光伏阵列输出值在不同故障状态下的对应关系准确定位故障的位置;最后通过实验和仿真对提出的传感器配置和矩阵扰动法进行验证,实验与仿真结果验证所提方法的可行性和有效性。Aiming at the problem that the existing fault location methods of photovoltaic array are difficult to consider the positioning accuracy and cost of components at the same time,a fault location method of photovoltaic array based on information entropy principle and matrix perturbation method is proposed.Firstly,according to the characteristic values of the photovoltaic system under different fault conditions,the sensors are arranged and the output values of the photovoltaic array side are obtained by the sensor configuration method based on information entropy.Then,the response matrix is constructed and the trace and spectral radius of the matrix are used as fault features.The corresponding relationship between the trace and spectral radius of the response matrix and the output value of the photovoltaic array under different fault conditions can accurately locate the fault location.Finally,the proposed sensor configuration and matrix perturbation method are verified by experiments and simulations.The experimental and simulation results verify the feasibility and effectiveness of the proposed method.

关 键 词：光伏系统 故障定位 传感器 最小二乘拟合 矩阵扰动 

分 类 号：TM615[电气工程—电力系统及自动化]