基于三端法的HHT行波故障测距研究

输电线行波故障定位的技术关键在于提高捕捉故障行波波头信号到达时间的精确度以及行波波速度的确定。小波变换（Wavelet Transform,WT）是目前主要采用的波头识别算法,而希尔伯特-黄变换（HilbertHuang Transform,HHT）作为分析非平稳和非线性信号一种强大的工具值得深入研究,文章提出了基于三端测距法的HHT行波测距方法。采用Simulink建立输电线路仿真模型,通过haar、db4小波和HHT分析对比,结果表明HHT能更有效地提高故障定位精度,且克服了小波变换需要选择小波基函数和分解尺度的缺点。...

Full description

Saved in:
Bibliographic Details
Published in电测与仪表 Vol. 52; no. 21; pp. 11 - 16
Main Author 艾颖梅 陈剑云 何军娜 冯秋实 林鹏 黄玉萍
Format Journal Article
LanguageChinese
Published 华东交通大学电气与电子工程学院,南昌,330013 2015
Subjects
Hilbert-Huang变换
三端法
小波变换
故障定位
行波
输电线路
traveling wave
小波变换
Hilbert-Huang变换
故障定位
行波
fault location
wavelet transform
输电线路
三端法
three-ended method
Hilbert-Huang transform
transmission line
Online AccessGet full text
ISSN1001-1390

Cover

More Information
Summary:输电线行波故障定位的技术关键在于提高捕捉故障行波波头信号到达时间的精确度以及行波波速度的确定。小波变换（Wavelet Transform,WT）是目前主要采用的波头识别算法,而希尔伯特-黄变换（HilbertHuang Transform,HHT）作为分析非平稳和非线性信号一种强大的工具值得深入研究,文章提出了基于三端测距法的HHT行波测距方法。采用Simulink建立输电线路仿真模型,通过haar、db4小波和HHT分析对比,结果表明HHT能更有效地提高故障定位精度,且克服了小波变换需要选择小波基函数和分解尺度的缺点。
Bibliography:23-1202/TH
transmission line, fault location, traveling wave, three-ended method, wavelet transform, Hilbert-Huang transform
The key technology of the traveling wave fault location of transmission line is to capture the accuracy of fault traveling wave signal arrival time and the determination of the traveling wave velocity. The wavelet transform （Wavelet Transform, WT） is currently adopted by the main wave head identification algorithm, and the Hilbert- Huang Transform （Hilbert-Huang Transform, HHT） as a new and powerful analysis tool is worth further researching, which is used for the analysis of non-stationary and nonlinear signal. Based on the theory of three-ended traveling wave fault location, the transmission line simulation model of the simulink is established in the paper, by means of Haar, db4 wavelet and HHT analysis, the results show that HHT can effectively improve the precision of fault location, and overcome the shortcomings that the wavelet transform need to choose the wavelet function and the d
ISSN:1001-1390