光伏组件参数拟合及输出特性研究  

Research on parameter fitting and output characteristics of PV module

作　　者：韩伟[1] 王宏华[1] 陈凌[1] 吴福寿[2] 

机构地区：[1]河海大学能源与电气学院,江苏南京211100 [2]国网浙江省电力公司检修分公司,浙江嘉兴314000

出　　处：《电力自动化设备》2015年第9期100-107,共8页Electric Power Automation Equipment

基　　金：江苏省研究生培养创新工程(CXZZ12_0228);国网江苏省电力公司科技项目(J2014028)~~

摘　　要：为了能够对任意光照强度和温度下的光伏组件进行准确建模,提出了一种基于参数拟合的五参数等效电路模型。分析不同工况下的光伏组件输出特性曲线,借助于改进的人工鱼群算法对模型中各个参数进行辨识;在此基础上,通过最小二乘拟合法对光伏组件各参数进行公式拟合修正,获取任意工况下对应的模型参数值。与传统参数转换公式相比,基于所提方法对光伏组件建模精确度更高,模型能够表征对应光伏组件输出特性的变化规律。实验结果进一步验证了所提建模方法的准确性和有效性。In order to build an accurate model of PV（Photo Voltaic） module under random irradiance and temperature,a five-parameter equivalent circuit model of PV module is proposed based on parameter fitting.The characteristic curves of PV module output in different working conditions are analyzed and each model parameter is identified by the improved artificial fish swarm algorithm,based on which,the least-squares fitting method is applied to obtain the corresponding correction formula for each parameter of PV model under various conditions. To represent the variation law of PV module output characteristics,the model established by the proposed method has higher precision than that by the traditional parameter conversion formula. The accuracy and effectiveness of the proposed method are further verified by the experimental results.

关 键 词：光伏组件 改进人工鱼群算法 参数辨识 最小二乘拟合法 仿真模型 光伏电池 

分 类 号：TM615[电气工程—电力系统及自动化]