摘要
针对基于瞬时无功理论提出的ip-iq法不能直接检测系统负序电流,将两种改进之后可以检测三相系统基波负序电流的方法,分不同的情况进行了仿真分析;研究了两种方法在4种情况下检测系统三相基波负序电流的适用条件,得出基于提取基波正序电流的负序电流检测方法更优;并根据有源滤波器的补偿原理提出了相应的补偿方法。
The ip-iq method based on instantaneous reactive power theory can not directly detect the negative sequence current in power system. After improvement, the fundamental negative sequence current of three-phase system can be detected, and the method has been simulated in different situations. Both methods were studied about the conditions applicable for three-phase system fundamental negative sequence current detection under four kinds of situations. It is concluded that the detection method based on the extraction of fundamental positive sequence current is better. And according to the principle of active filter compensation, the corresponding compensation methods are proposed.
出处
《华东电力》
北大核心
2014年第3期541-546,共6页
East China Electric Power
基金
国家自然科学基金(51267017)~~
关键词
瞬时无功理论
IP-IQ法
基波负序电流
有源滤波器
instantaneous reactive power theory
ip-iq method
fundamental negative sequence current
active filter
