Wavelets: A new tool for the resonant grounded power distribution systems relaying

被引：164

作者：

Chaari, O ^{[1
]}

Meunier, M ^{[1
]}

Brouaye, F ^{[1
]}

机构：

[1] SUPELEC,SIGNAUX & SYST LAB,GIF SUR YVETTE,FRANCE

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 1996年 / 11卷 / 03期

关键词：

resonant grounded system; power distribution system; Earth fault; transients wavelets; recursive algorithm; signal analysis;

D O I：

10.1109/61.517484

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper introduces wavelets and shows that they may be efficient and useful for the power distribution relaying. The wavelet transform of a signal consists in measuring the ''similarity'' between the signal and a set of translated and scaled versions of ''mother wavelet''. The ''mother wavelet'' is a chosen fast decaying oscillation function. Wavelets are used to analyse transient earth fault signals in a 20 kV resonant grounded network as generated by EMTP. It is shown that wavelets may be employed for analysing records to study efficiently the faulted network. Moreover, this new technique can actually be implemented in real time for protection devices. Thus, it is suitable for application to protective relays.

引用

页码：1301 / 1308

页数：8

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