作者：郭珂, 袁丹夫, 温浚铎, 王瀚笠

作者单位：重庆大学, 重庆 400044

关键词：光伏阵列;等效串联电阻;新型计算模型;工程应用

摘要：

该文提出一种新型光伏阵列等效串联电阻的简化计算模型，同时在该模型的基础上，提出一种等效串联电阻的工程应用模型。该模型基于光伏电池的工程电路模型，通过推导光伏阵列最大功率点时的输出电压和电流关系以求得光伏阵列运行在最大功率点时的等效串联电阻；基于光伏阵列实时运行参数与环境参数、标准情况下运行参数的关系，通过简化计算模型计算获取实时的光伏阵列等效串联电阻。现场实验结果表明：以上两种模型的计算值误差均在8%以下，满足工程精度要求，具有较高的实际工程应用价值。

Calculation model of equivalent series resistance of new photovoltaic array
GUO Ke, YUAN Danfu, WEN Junduo, WANG Hanli
Chongqing University, Chongqing 400044, China
Abstract: A new type of simplified calculation model of the equivalent series resistance of photovoltaic array is proposed. Meanwhile, based on the model, an engineering application model of equivalent series resistance is proposed. The model is based on the engineering circuit model of the photovoltaic cell. By deducing the correlation between the output voltage and current at the maximum power point of the PV array, the model can obtain the equivalent series resistance of the PV array operating at the maximum power point. Based on the correlation between real-time operating parameters and the parameters of environment and of the PV array which operates under standard condition, the real-time equivalent series resistance of photovoltaic array can be obtained by this model. The field experiment results showed that the calculation error of the above two models are all below 8%, which meets the engineering requirements of precision and has high practical engineering application value.
Keywords: photovoltaic array;equivalent series resistance;new calculation model;engineering application
2019, 45(12):126-131  收稿日期: 2019-03-22;收到修改稿日期: 2019-05-05
基金项目: 
作者简介: 郭珂(1973-),男,四川彭州市人,高级工程师,硕士生导师,研究方向为新能源发电控制与并网技术、电力电子技术在电力系统中的应用
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