低压动态电压恢复器2种滤波器结构的比较与分析  

Comparison and analysis of two filter structures for low-voltage dynamic voltage restorer

作　　者：王有云 马保慧 张厚楷 肖国春[2] 韩笑黎 WANG Youyun;MA Baohui;ZHANG Houkai;XIAO Guochun;HAN Xiaoli(State Key Laboratory of Large Electric Drive System and Equipment Teehnology,TEDRI,Tianshui 741020,China;School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]天水电气传动研究所有限责任公司大型电气传动系统与装备技术国家重点实验室,甘肃天水741020 [2]西安交通大学电气工程学院,陕西西安710049

出　　处：《电力自动化设备》2019年第1期168-174,182,共8页Electric Power Automation Equipment

基　　金："大型电气传动系统与装备技术国家重点实验室"开放基金资助项目(SKLLDJ022016001)~~

摘　　要：动态电压恢复器(DVR)是一种重要的电压跌落补偿装置,根据LC滤波器中滤波电容接入位置的不同,将DVR分为输出滤波型和电容负载并联型,2类DVR的性能及其对电网的影响是不同的。对2类DVR控制系统进行了分析和设计,并在此基础上深入研究了电网阻抗对2类DVR的稳定性和系统性能的影响,比较了应用这2类DVR对电网造成的干扰并针对电容负载并联型DVR提出了抑制该干扰的方法。DVR( Dynamic Voltage Restorer) is an important device to compensate voltage sag.According to the connecting points of filter capacitors in LC filters,DVR can be divided into output-filtering type and capacitor-load-parallel type.The performance of the two types of DVR and their influences on power grid are different.Based on the analysis and design of the two types of DVR control system,the influence of power grid impedance on stability and system performance of the two types of DVR are studied,the interference on power grid caused by the application of these two types of DVR are compared and the method for capacitor-load-parallel DVR to suppress the interference is proposed.

关 键 词：动态电压恢复器 LC滤波器 电网阻抗 稳定性 并联电容器 

分 类 号：TN713[电子电信—电路与系统] TM761[电气工程—电力系统及自动化]