基于等效电路模型参数计算的光伏组件隐裂故障诊断方法

高剑; 郭倩; 卫东; 顾鑫磊

doi:10.19912/j.0254-0096.tynxb.2023-0095

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (5) : 481-489. DOI: 10.19912/j.0254-0096.tynxb.2023-0095

基于等效电路模型参数计算的光伏组件隐裂故障诊断方法

高剑¹, 郭倩¹, 卫东², 顾鑫磊¹

作者信息 +

METHOD OF PHOTOVOLTAIC MODULE CRACKED FAULT DIAGNOSIS BASED ON EQUIVALENT CIRCUIT MODEL PARAMETER CALCULATION

Gao Jian¹, Guo Qian¹, Wei Dong², Gu Xinlei¹

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文章历史 +

摘要

基于等效电路模型参数计算,提出一种光伏组件隐裂故障诊断方法。通过分析隐裂、热斑、电势诱导衰减（PID）和老化故障的产生和演化机理,研究不同故障对光伏组件输出特性的影响作用、模型参数的变化规律及其差异性。建立包含正/反向特性的光伏组件等效电路模型,根据模型参数计算结果,确定故障诊断特征量,提出隐裂故障的诊断方法。实验结果表明：所得光伏组件等效电路模型参数计算结果能够较高精度地拟合实验获得的I-V特性曲线;所确定的故障诊断特征量能够有效表征隐裂的发生和演化过程;所提故障诊断方法能够实现可靠的隐裂故障原因判定和程度估算。

Abstract

Using equivalent circuit model parameter calculations, a new method is proposed to diagnose hidden cracks in photovoltaic modules. It analyzes hidden crack, hot spot, potential induced attenuation （PID）, and aging fault mechanisms, studying their impact on module output characteristics and parameter variations. An equivalent circuit model incorporating forward/reverse characteristics is established. From the calculated parameters, diagnostic features for hidden crack diagnosis are determined. Experimental results demonstrate precise fitting of computed parameters to experimental I-V curves. The identified diagnostic features effectively represent hidden crack occurrence and evolution. This method reliably identifies causes and estimates the severity of hidden crack faults.

导出引用

高剑, 郭倩, 卫东, 顾鑫磊. 基于等效电路模型参数计算的光伏组件隐裂故障诊断方法[J]. 太阳能学报. 2024, 45(5): 481-489 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0095

Gao Jian, Guo Qian, Wei Dong, Gu Xinlei. METHOD OF PHOTOVOLTAIC MODULE CRACKED FAULT DIAGNOSIS BASED ON EQUIVALENT CIRCUIT MODEL PARAMETER CALCULATION[J]. Acta Energiae Solaris Sinica. 2024, 45(5): 481-489 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0095

中图分类号： TM615

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