两种单相电路无功电流实时检测方法分析  

Analysis of Two Real-time Detecting Methods of Reactive Current in Single-phase Circuit

作　　者：陈坤鹏[1] 谢运祥[1] 邓衍平[1] 龚臣[1] 

机构地区：[1]华南理工大学,广东广州510640

出　　处：《电力电子技术》2004年第6期50-52,共3页Power Electronics

摘　　要：针对单相电路无功补偿器对无功电流检测的要求,提出了两种无功电流检测方法,它们是基于时域分析的有功电流分离法和基于瞬时无功功率理论的谐波分离法。前者算法简单,后者对低通滤波器(LPF)的要求相对较低。理论分析、仿真与试验结果证明,两种方法都能实时精确地检测出单相电路中的无功电流。This paper presentes two methods for detecting the reactive current in single-phase circuit in order to meet the demand of reactive power compensator.They are the former was active current separate method based on time domain,and the latter was harmonic current separate method based on instantaneous re-active power theory.The former method is simpler in algorithm and implement,and the latter has lower require-ment of low pass filter(LPF).Theory analysis,simulation and experiment results verify that two methods can both detect reactive current in single-phase precisely in real time.

关 键 词：无功功率补偿 滤波器/晶闸管投切电容器 无功电流 

分 类 号：TM714.3[电气工程—电力系统及自动化]