Non-invasive monitoring of underground power cables using Gaussian-enveloped chirp reflectometry

被引：4

作者：

Lee, Chun Ku ^{[1
]}

Lee, Sin Ho ^{[1
]}

Chang, Seung Jin ^{[1
]}

Park, Jin Bae ^{[1
]}

Yoon, Tae Sung ^{[2
]}

机构：

[1] Yonsei Univ, Dept Elect & Elect Engn, Seoul 120749, South Korea

[2] Changwon Natl Univ, Dept Elect Engn, Chang Won, South Korea

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2013年 / 24卷 / 10期

关键词：

underground power cable; fault localization; reflectometry; MUSIC; chirp signal; inductive coupler; Wiener filtering; FREQUENCY DOMAIN REFLECTOMETRY; LOCATION; PERFORMANCE; FAULT;

D O I：

10.1088/0957-0233/24/10/105012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, we introduce non-invasive Gaussian-enveloped linear chirp (GELC) reflectometry for the diagnosis of live underground power cables. The GELC reflectometry system transmits the incident signal to live underground power cables via an inductive coupler. To improve the spatial resolution of the GELC reflectometry, we used the multiple signal classification method, which is a super-resolution method. An equalizer, which is based on Wiener filtering, is used to compensate for the signal distortion due to the propagation characteristics of underground power cables and inductive couplers. The proposed method makes it possible to detect impedance discontinuities in live underground power cables with high spatial resolution. Experiments to find the impedance discontinuity in a live underground power cable were conducted to verify the performance of the proposed method.

引用

页数：13