Negative Sequence Current Detection Method Based on the Improved Instantaneous Reactive Power Theory
Abstract: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.
instantaneous reactive power theoryip-iq methodfundamental negative sequence currentactive filter
NETL
NSTL
万方数据
维普
