基于扰动谐波注入法的阻抗测量实验系统  

Impedance Measurement Experimental System Based on Perturbation Harmonic Injection

作　　者：李晗[1] 赵建勇 年珩[1] 李萌[1] LI Han;ZHAO Jian-yong;NIAN Heng;LI Meng(Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《电力电子技术》2022年第7期1-3,共3页Power Electronics

基　　金：浙江大学实验技术研究项目(SJS202006)。

摘　　要：目前新能源发电设备大量接入电网,需要测量不同类型新能源发电设备的阻抗来进行并网稳定性分析。测量系统以Venable-7001频率响应分析仪为基础平台,设计了三相独立灵活配置的扰动信号发生电路以及基于通用串行总线(USB)接口的信号采集电路。通过LabVIEW设计了与系统硬件电路对应的图形化控制界面,方便用户下达操作指令和监控数据。该平台能够根据测量需要灵活调整扰动信号频率,并能够实时测量电压、电流信号计算待测设备阻抗,通过实验测量获取了三相RL电路电感阻抗证明了平台的可用性。At present,a large number of new energy power generation equipment is connected to the grid,and it is necessary to measure the impedance to analyze the stability of the grid-connected system.The measurement system is based on the Venable-7001 analyzer.It can flexibly generate three-channel sinusoidal disturbance signals and collect data with universal serial bus(USB) interface.The graphical control interface corresponding to the system hardware circuit is designed through Lab VIEW,which is convenient for users to operate instructions and monitor data.The platform can measure the voltage and current signals in real time to calculate the impedance of the device under test.The inductance impedance of the three-phase RL circuit is obtained through experimental measurement,which proves the usability of the platform.

关 键 词：阻抗测量 新能源发电设备 谐波注入 

分 类 号：TM930.1[电气工程—电力电子与电力传动]