基于MATLAB的广义有源电力滤波器检测方法研究  

Study of Testing Method in Generalized Active Power Filter Based on MATLAB

作　　者：吕振梅[1] 郑龙[1] 

机构地区：[1]湖南省电力公司超高压管理局,湖南长沙410076

出　　处：《电气开关》2013年第2期66-68,共3页Electric Switchgear

摘　　要：广义有源电力滤波器(GAPF)是一种普遍适用的高性能新型有源电力滤波器。基于广义瞬时无功功率理论,研究了GAPF指令电流检测的p-q-r法。为消除电流检测中电压畸变带来的检测误差,提出采用数字低通滤波器对电网畸变的电压进行滤波,提取其中的基波电压,在此基础上进行谐波和无功电流的检测。本文利用MATLAB/SIMULINK提供的SimPower工具箱对有害电流检测方案进行了建模,以此作为GAPF的指令电流。仿真结果表明,采用该方法能够精确检测谐波电流等分量,消除电压畸变对结果的影响。The p - q - r method is introduced, which is applied in three - phase four - wire system to detect harmonics. Its effect on eliminating neutral current is researched in detail. To eliminate the error of non - ideal voltage source,it re- moves the harmonic components by digital lowpass. The SimPower Blocker of SIMULINK includes all aspects of modeling and simulation in power system. In this paper, harmonic currents detection methods are built into models and simulated by the SimPower Blockset. With this method, the working process of harmonic currents detection and the correlative wave forms can be displayed exactly and in intuition, and it proves these theories successfully.

关 键 词：广义有源电力滤波器 p-q-r法 谐波电流 

分 类 号：TN713.8[电子电信—电路与系统]