电力系统保护与控制2012，Vol.40Issue(2)：88-92,105,6.
基于Hilbert-Huang变换的行波法高压输电线路故障定位
A traveling wave fault location method for high voltage power transmission lines based on Hilbert-Huang transform
徐俊明 1汪芳宗 1尹星 1夏沛1
作者信息
- 1. 三峡大学电气与新能源学院,湖北宜昌443002
- 折叠
摘要
Abstract
When a short circuit fault of transmission lines happens, it will produce transient state traveling wave, which is a non-linear and non-stationary signal. To accurately extract the wave head is the key to traveling wave fault location. This paper applies Hilbert-Huang transform, a non-stationary signal processing tool, to detect the wave head to realize fault location. Make use of GPS to synchronously acquire the current signals at both ends of the transmission lines before and after the fault happened. The high frequency modal component can be obtained after Empirical Mode Decomposition (EMD) for these signals. And then we can get a time-frequence figure by Hilbert Transform from the high frequency modal component. The mutational site of the frequence on the figure is the arrive time of the wave head. The results of simulations by Matlab show that this method can accurately extract the arrive time of wave head, and also has high accuracy.关键词
行波/故障定位/Hilbert-Huang变换/GPS/经验模态分解Key words
traveling wave/ Hilbert-Huang transform/ fault location/ GPS/ EMD分类
信息技术与安全科学引用本文复制引用
徐俊明,汪芳宗,尹星,夏沛..基于Hilbert-Huang变换的行波法高压输电线路故障定位[J].电力系统保护与控制,2012,40(2):88-92,105,6.
