摘要
分析了配电系统单相接地的故障特征,根据非故障线路故障电流行波能量只是故障线路分量的结论,提出运用在时频空间皆具有良好聚焦特性的小波包,以适当频率带宽,对故障后的零序暂态电流信号进行处理,自适应选择频带来实现配电系统接地选线的新方法。大量的Matlab仿真试验结果验证了本文提出的方法准确、可靠,适合于接地方式不同的配电系统。
A new method of faulty line identification in distribution system is proposed in this paper, in which the signal of zero-sequence transient current is dealt with the way of the the wavelet package based on analyzing the characteristics of the single-phase earth fault in distribution system. The proposed method is validated by a great number of simulation experiments in Matlab accurately and reliably for various distribution systems with different neutral grounding modes.
出处
《继电器》
CSCD
北大核心
2007年第11期1-4,20,共5页
Relay
关键词
配电系统
故障选线
暂态零序电流
小波包
distribution system
faulty line selection
transient zero-sequence current
wavelet package
