摘要
提出一种新的适合工程应用的光伏故障检测方法,以光伏电流电压I-V输出特性为基础,通过光伏阵列等效电路模型中的串联等效电阻来判断阵列中是否存在故障组件。进一步地,该文总结了2种确定光伏阵列存在故障的判定条件,即基于光伏阵列等效电路模型拟合得到的串联等效电阻值为负数或者拟合值与参考值偏差较大时,则认为存在故障组件,最后经实验验证所提出方法的准确性和可行性。
This paper presents a novel photovoltaic(PV)fault detection method suitable for engineering applications.Based on the PV current and voltage(I-V)output characteristics,the series equivalent resistance in the equivalent circuit model of PV array is used to determine whether there is a faulty component in the array.Furthermore,this paper summarizes the two determination conditions for determining the faults of in the PV array,that is,if the series equivalent resistance value obtained from the PV array equivalent circuit model is negative or its deviation from the reference value is large,which shows there are faulty components.Finally,the hardware experimental tests are carried out verifying the accuracy and feasibility of the proposed method.
作者
刘强
郭珂
毛明轩
万怡浩
周思宇
吴昊
Liu Qiang;Guo Ke;Mao Mingxuan;Wan Yihao;Zhou Siyu;Wu Hao(School of Electrical Engineering,Chongqing University,State Key Laboratory of Power Transmission Equipment&System Security and New Technology,Chongqing 400044,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2020年第10期119-126,共8页
Acta Energiae Solaris Sinica
基金
国家自然科学基金面上项目(51477021)
国家自然科学基金青年科学基金(5170070424)。
关键词
太阳电池
电流电压特性
故障检测
等效电路
串联等效电阻
solar cell
current voltage characteristics
fault detection
equivalent circuit
series equivalent resistance
