光伏逆变器电压穿越特性研究及参数辨识  

Study on Voltage Traversal Characteristics and Parameter Identification of PV Inverter

作　　者：吴辅朝 陈众[1] 徐翼 WU Fuchao;CHEN Zhong;XU Yi(Key Laboratory of Smart Grid Operation and Control,Changsha University of Science and Technology,Changsha 410004,China)

机构地区：[1]智能电网运行与控制重点实验室(长沙理工大学),湖南长沙410004

出　　处：《电工材料》2025年第2期65-70,共6页Electrical Engineering Materials

基　　金：云南电网有限责任公司电力科学研究院项目(0562002023030301XT00010)。

摘　　要：为了获取光伏逆变器的低穿、高穿故障控制模型参数,提出了一种基于对称、不对称下的故障集的光伏逆变器故障模型参数测试和辨识方法。首先,分析光伏逆变器的机电仿真模型结构,明确了待辨识的参数。然后,根据光伏逆变器运行中可能发生的各种类型、各种幅值的电压扰动,设计了测试故障集,并且针对厂家给出的封装电磁计算进行了全面的测试。最后,根据测试结果分析得出厂家的故障控制模型,并且根据PSD-BPA模型参数对其进行了最小二乘法的辨识,通过时域仿真验证了测试、辨识结果的正确性。In order to obtain the parameters of control model of LVRT and HVRT of PV inverter,a method for testing and identifying parameters of photovoltaic inverter fault model based on symmetrical and asymmetric fault sets was proposed.Firstly,the electromechanical simulation model structure of photovoltaic inverter was analyzed,and the parameters to be identified were clarified.Subsequently,according to various types and amplitude voltage disturbances that may occur in the operation of PV inverter,a test fault set was designed,and a comprehensive test was carried out for the packaging electromagnetic calculation given by the manufacturer.Finally,according to the analysis of the test results,the model of fault control of the manufacturer was obtained,and the least square method was used to identify the parameters of the PSD-BPA model.The correctness of the test and identification results was verified by time domain simulation.

关 键 词：光伏逆变器 电压穿越特性 参数辨识 

分 类 号：TM614[电气工程—电力系统及自动化]