Analysis of Transient Dominant Frequency Signal for Single-Phase Earthed Fault Based on Prony Algorithm

摘要：

The fact of a dominant resonance frequency existed in the transient process of short-circuit fault is discovered by analyzing transient characteristics of single-phase earthed fault. At this frequency, the amplitude of zero modal current in faulty feeder is much larger than that in healthy feeder, and their polarity is approximately opposite. Transient dominant frequency zero modal current in faulty feeder is 90° lagged behind zero modal voltage of bus bar, while for healthy feeder it is 90° leading zero modal voltage of bus bar. Vast simulations under diverse fault conditions have been done by using ATP program. The transient dominant frequency signal is extracted based on Prony algorithm and the corresponding fit data and wave-form is obtained, which completely proved the above conclusions.

关键词： Non-solidly grounded system single-phase earthed fault faulty feeder selection Prony algorithm dominant resonance frequency

作者: Xin-hui Zhang Shu-xian Fan Hao Duan Bing-yin Xu

作者单位: School of Electrical & Electronic Engineering,Shandong University of Technology,Zibo 255049,China School of Electrical Engineering,Shandong University,Jinan 250061,China

会议类型: 国际会议

会议名称: 2008 China International Conference on Electricity Distribution (CICED 2008)(2008中国国际供电会议)

会议地点: 广州

会议语种:英文

页码: 1-6

在线出版日期: 2008-12-10（万方平台首次上网日期，不代表论文的发表时间）