Fault Line Selection in Non-solidly Earthed Network Based on Modulus Mazimum Polarity

摘要：

Despite the big progress made in recent years In the research on transient fault line selection methods in non-solidly earthed network, these methods are still far from perfect. A new scheme for fault line selection in non-solidly earthed network based on the singularity detection and modulus maximum polarity theory is proposed. This scheme applies wavelet packet transform to fractionize the frequency bands of the zero sequence transient current and picks out the characteristic band according to energy maximum principle. Not affected by line parameters and the neutral grounding manner, the criterion also has the ability of enduring high transition resistance. Its validity has been verified by the EMTP/MATLAB simulation results.

关键词： modulus mazimum polarity fault line selection wavelet packet transform characteristic frequency band nonsolidly earthed network

作者: Yuanyuan Zhang Qingwu Gong Daojun Chen

作者单位: School of Electrical Engineering Wuhan University Wuhan,China

会议类型: 国际会议

会议名称: 2009 International Conference on Measuring Technology and Mechatronics Automation(ICMTMA 2009)(2009年检测技术与机械自动化国际会议)

会议地点: 长沙

会议语种:英文

页码: 661-664

在线出版日期: 2009-04-11（万方平台首次上网日期，不代表论文的发表时间）