单相电路谐波和无功电流的同步检测原理及实现  

Principle and Realization of Synchronism Detection Approach to Harmonic and Reactive Currents of a Single-Phase System

作　　者：张义兵[1] 戴瑜兴[2] 

机构地区：[1]湘潭大学信息工程学院,湖南湘潭411105 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《低压电器》2004年第8期47-50,54,共5页Low Voltage Apparatus

基　　金：湖南省自然科学基金资助项目(0 3JJY5 0 2 3 )

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 ,给出一种实时、准确检测单相负载电流中的谐波电流和无功电流的方法。通过理论分析和仿真实验论证 ,表明该算法可以解决目前常用谐波电流检测方法存在的问题 ,特别是能有效解决单相负载和三相不平衡系统的谐波电流、无功电流的检测难点 ,并给出了该方法的硬件实现方案。Aim at the detection to harmonic current and reactive current in single-phase power system, a me- thod to detect harmonic current and reactive current in the single-phase load current with accuracy in real time were given. Through theoretical analysis and simulation experiment, it was indicated that these two new algorithms could solve the existing problem of the typical harmonic current detection method at present, especially could effectively solve the difficulties about the harmonic current and reactive current detection in single-phase load and three-phase unbalanced system. And a scheme realized by hardware was proposed.

关 键 词：实时检测 谐波电流 无功电流 有功功率 有源电力滤波器 

分 类 号：TM933[电气工程—电力电子与电力传动]