新型滤波器在动态电压恢复器中的应用研究  

Application Research of a New Type of Filter for Dynamic Voltage Restorer

作　　者：郝晓弘[1] 房善新[1] 陈伟[1] 

机构地区：[1]兰州理工大学电气工程与信息工程学院,甘肃兰州730050

出　　处：《工矿自动化》2010年第8期77-81,共5页Journal Of Mine Automation

基　　金：甘肃省自然科学基金项目(0809RJZA006);甘肃省科技攻关项目(GS044-A52-001-24)

摘　　要：在分析目前应用较多的电压峰值检测法、傅里叶变换法、小波变换法、d-q变换法和pqr瞬时功率法等电压暂降检测方法的基础上,提出了基于瞬时无功功率理论的动态电压恢复器检测算法;针对传统的一个ButterWorth低通滤波器存在实时性差的问题,设计了采用一个带阻滤波器和一个高截止频率ButterWorth低通滤波器串联而成的新型滤波器。Matlab/Simulink仿真结果表明,该新型滤波器能够在保证精度的基础上将检测时间缩短到约1/3个基波周期,提高了电压暂降检测的实时性。On basis of analysis of detection methods of voltage sag such as voltage peak detection method,Fourier transform method,wavelet transform method,d-q transformation method and pqr instantaneous power method,the paper proposed a detection algorithm of dynamic voltage restorer（DVR） based on instantaneous reactive power theory.For the problem of poor real-time of a traditional ButterWorth low pass filter,it designed a new type of filter which is consisted of a band-stop filter in series with a low pass filter.The simulation results in Matlab/Simulink showed that the new type of filter can reduce the detection time to one third of fundamental cycle without reducing precise,and improve the real time of voltage sag detection.

关 键 词：动态电压恢复器 电压暂降 低通滤波器 带阻滤波器 BUTTERWORTH DVR 

分 类 号：TD611.5[矿业工程—矿山机电] TN713[电子电信—电路与系统]