光伏组件形状参数工程解析模型

发布时间：2018-05-09 19:10

本文选题：物理参数 + 形状参数　；参考：《电网技术》2015年06期

【摘要】：光伏组件由光伏电池串联组成,光伏电池的经典单二极管模型物理参数意义明确,但输出特性隐式超越方程求解困难;通过拟合外特性建立的新型解析数学模型方程形式简洁,但所取形状参数物理意义不明确。结合上述2种模型的优点,提出了形状参数工程解析模型。考虑到光伏组件的物理性能会随工作年限逐渐变化,该模型用当前实际测试条件(real test conditions,RTC)下实测输出数据替换出厂前标准测试条件(standard test conditions,STC)下输出数据,拟合得到RTC下形状参数。基于形状参数与物理参数相互间的解析关系,根据环境变化修正后的物理参数解析求取相应形状参数,得到任意环境下输出特性的解析结果。通过单晶硅光伏组件在典型室外环境下输出特性的实测,验证了该模型的准确性。
[Abstract]:The photovoltaic module is composed of photovoltaic cells in series. The physical parameters of the classic single diode model of photovoltaic cells are clear, but the output characteristics are difficult to solve by implicit transcendental equations. But the physical meaning of the shape parameter is not clear. Combining the advantages of the above two models, an engineering analytical model of shape parameters is proposed. Considering that the physical performance of photovoltaic module will change gradually with the working life, the model replaces the output data under standard test conditions under the current real test conditions (RTCs) with the output data under the pre-factory standard test conditions. The shape parameters under RTC are obtained by fitting the model. Based on the analytic relationship between the shape parameters and the physical parameters, the corresponding shape parameters are obtained according to the modified physical parameters, and the analytical results of the output characteristics in any environment are obtained. The accuracy of the model is verified by measuring the output characteristics of monocrystalline silicon photovoltaic module in typical outdoor environment.
【作者单位】：山东大学电气工程学院;北京电力经济技术研究所;国家电网山东省电力公司;
【分类号】：TM914.4

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