[1]廖晓辉,梁恒娜,丁倩..基于小波变换的电力电缆故障测距研究[J].郑州大学学报(工学版),2013,34(03):6-9.[doi:10.3969/j.issn.1671-6833.2013.03.002]
　LIAOXiao-hui,LIANGHengna,DING Qian.Research of Power Cable Fault Location Based on Wavelet TransfeIrm[J].Journal of Zhengzhou University (Engineering Science),2013,34(03):6-9.[doi:10.3969/j.issn.1671-6833.2013.03.002]
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基于小波变换的电力电缆故障测距研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
34
期数:
2013年03期
页码:
6-9
栏目:
出版日期:
2013-05-31

文章信息/Info

Title:
Research of Power Cable Fault Location Based on Wavelet TransfeIrm
作者:
廖晓辉; 梁恒娜; 丁倩.
郑州大学电气工程学院,河南郑州,450001, 郑州大学电气工程学院,河南郑州,450001, 郑州大学电气工程学院,河南郑州,450001
Author(s):
LIAOXiao-hui; LIANGHeng—na; DING Qian
Schoolof Electrical Engineering，Zhengzhou University，Zhengzhou450001，China
关键词:
电力电缆;  小波变换;  模极大值;  行波故障测距
Keywords:
power cable; wavelet transform; modulus maximam; travelingwave fault location
分类号:
TM743
DOI:
10.3969/j.issn.1671-6833.2013.03.002
文献标志码:
A
摘要:
随着电力电缆的广泛应用,对电缆故障测距的精确度要求也日益提高.为了实现电缆故障的精确定位,引入小波变换的方法对电缆故障行波信号进行检测和分析,根据信号的奇异性检测原理,采用搜索模极大值的方法确定行波信号起始脉冲和反射脉冲时间点,应用单端行波在线故障测距方法进行测距,实验结果表明,利用小波变换的时频局部化特性可有效聚焦到电缆行波信号的奇异点,从而得到精确的脉冲到达时刻.该方法不受电缆故障类型的影响,测距误差小,可获得较高的故障定位精度.
Abstract:
Withwide application ofpower cable in transmission anddistribution systems，the demandforcable fault location accuracy is improved．In orderto locate cable fault accurately，thewavelet transform is appliedin detectingthe travelingwave signal of power cable．According to the principle of singularity detection of signals，the travelingwave starting pulse andreflection pulse time point is determined bysearchingmodulusmax— imum，andthen locatingbysingle terminal travelingwavemethodforthe online fault location．The experimental results show that the traveling wave singularity point can be detected by using localized time——frequency characteristic of wavelet transform，thereby the accurate time of pulse arrival is obtained．This method is not affected by fault type andthe range error is small，which can achieve ahigher fault location accuracy．

参考文献/References:

[1]徐丙垠，李胜祥，陈宗军．电力电缆故障探测技术[M]．北京：机械工业出版社，1999．

[2]刘嫣，汪梅．一种新的电缆单端故障测距方法研究[J]．仪器仪表学报，2006，27(6)：44—45．

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更新日期/Last Update: 1900-01-01