检测单相系统谐波电流和无功电流的一种新方法  

A Novel Detection Approach to Harmonic and Reactive Currents of a Single-phase System

作　　者：戴瑜兴[1] 张义兵[2] 陈际达[1] 

机构地区：[1]中南大学信息科学与工程学院,长沙410083 [2]湖南大学电气与信息工程学院,长沙410082

出　　处：《电工技术学报》2004年第2期93-97,19,共6页Transactions of China Electrotechnical Society

基　　金：湖南省自然科学基金项目(03JJY5023)。

摘　　要：针对单相系统谐波电流和无功电流检测中存在的问题,提出一种新的检测方法:基于瞬时无功功率的虚拟三相法。通过理论分析和仿真实验论证,表明这种算法能有效解决单相系统和三相不平衡系统中谐波电流和无功电流检测中存在的问题,且检测精度高,动态响应快。In order to detect the harmonic and reactive currents of a single-phase power system, a new method is proposed in this paper. Our active power measurement is based on the virtual three-phase method and instantaneous reactive power theory. The theoretical analyses and simulation experiments indicate that the new algorithm can accurately detect the typical harmonic currents, especially for the harmonic current and reactive current detection of a single-phase load or a three-phase unbalanced system.

关 键 词：单相系统 谐波电流 无功电流 检测 有源电力滤波器 

分 类 号：TM714[电气工程—电力系统及自动化]