Application of joint time-frequency domain reflectometry for electric power cable diagnostics

J. Wang, P. E.C. Stone, Y. J. Shin, R. A. Dougal

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

The integrity of the electric power cables is vital to the safety of an entire electrical system. To ensure the health of the cables, a technique is needed for both detecting/locating defects, and predicting hard defects before they occur. The theory and limitations of the classical wiring diagnostic techniques time domain reflectometry (TDR) and frequency domain reflectometry (FDR) are discussed. This study then introduces joint time-frequency domain reflectometry (JTFDR) as a unique solution for the cable diagnostics and prognostics. By employing an interrogating incident signal and advanced post-processing of the reflected signals, JTFDR is shown to be capable of overcoming those limitations. JTFDR is experimentally proven to be successful for detecting and locating both hard and incipient defects. The prognostic capabilities of JTFDR are also demonstrated via accelerated ageing tests of an electric power cable. By utilising the incident/reflected signal information in the time and frequency domains simultaneously, JTFDR is proven to be a more effective diagnostic technique than the classical TDR and FDR. JTFDR can also be used to monitor incipient defects and better predict hard defects before they occur.2010

Original languageEnglish
Pages (from-to)395-405
Number of pages11
JournalIET Signal Processing
Volume4
Issue number4
DOIs
Publication statusPublished - 2010 Aug 1

Fingerprint

Cables
Defects
Electric wiring
Aging of materials
Health
Processing

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Electrical and Electronic Engineering

Cite this

Wang, J. ; Stone, P. E.C. ; Shin, Y. J. ; Dougal, R. A. / Application of joint time-frequency domain reflectometry for electric power cable diagnostics. In: IET Signal Processing. 2010 ; Vol. 4, No. 4. pp. 395-405.
@article{29d41b84160c4be2867684c88b0a6952,
title = "Application of joint time-frequency domain reflectometry for electric power cable diagnostics",
abstract = "The integrity of the electric power cables is vital to the safety of an entire electrical system. To ensure the health of the cables, a technique is needed for both detecting/locating defects, and predicting hard defects before they occur. The theory and limitations of the classical wiring diagnostic techniques time domain reflectometry (TDR) and frequency domain reflectometry (FDR) are discussed. This study then introduces joint time-frequency domain reflectometry (JTFDR) as a unique solution for the cable diagnostics and prognostics. By employing an interrogating incident signal and advanced post-processing of the reflected signals, JTFDR is shown to be capable of overcoming those limitations. JTFDR is experimentally proven to be successful for detecting and locating both hard and incipient defects. The prognostic capabilities of JTFDR are also demonstrated via accelerated ageing tests of an electric power cable. By utilising the incident/reflected signal information in the time and frequency domains simultaneously, JTFDR is proven to be a more effective diagnostic technique than the classical TDR and FDR. JTFDR can also be used to monitor incipient defects and better predict hard defects before they occur.2010",
author = "J. Wang and Stone, {P. E.C.} and Shin, {Y. J.} and Dougal, {R. A.}",
year = "2010",
month = "8",
day = "1",
doi = "10.1049/iet-spr.2009.0137",
language = "English",
volume = "4",
pages = "395--405",
journal = "IET Signal Processing",
issn = "1751-9675",
publisher = "Institution of Engineering and Technology",
number = "4",

}

Application of joint time-frequency domain reflectometry for electric power cable diagnostics. / Wang, J.; Stone, P. E.C.; Shin, Y. J.; Dougal, R. A.

In: IET Signal Processing, Vol. 4, No. 4, 01.08.2010, p. 395-405.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Application of joint time-frequency domain reflectometry for electric power cable diagnostics

AU - Wang, J.

AU - Stone, P. E.C.

AU - Shin, Y. J.

AU - Dougal, R. A.

PY - 2010/8/1

Y1 - 2010/8/1

N2 - The integrity of the electric power cables is vital to the safety of an entire electrical system. To ensure the health of the cables, a technique is needed for both detecting/locating defects, and predicting hard defects before they occur. The theory and limitations of the classical wiring diagnostic techniques time domain reflectometry (TDR) and frequency domain reflectometry (FDR) are discussed. This study then introduces joint time-frequency domain reflectometry (JTFDR) as a unique solution for the cable diagnostics and prognostics. By employing an interrogating incident signal and advanced post-processing of the reflected signals, JTFDR is shown to be capable of overcoming those limitations. JTFDR is experimentally proven to be successful for detecting and locating both hard and incipient defects. The prognostic capabilities of JTFDR are also demonstrated via accelerated ageing tests of an electric power cable. By utilising the incident/reflected signal information in the time and frequency domains simultaneously, JTFDR is proven to be a more effective diagnostic technique than the classical TDR and FDR. JTFDR can also be used to monitor incipient defects and better predict hard defects before they occur.2010

AB - The integrity of the electric power cables is vital to the safety of an entire electrical system. To ensure the health of the cables, a technique is needed for both detecting/locating defects, and predicting hard defects before they occur. The theory and limitations of the classical wiring diagnostic techniques time domain reflectometry (TDR) and frequency domain reflectometry (FDR) are discussed. This study then introduces joint time-frequency domain reflectometry (JTFDR) as a unique solution for the cable diagnostics and prognostics. By employing an interrogating incident signal and advanced post-processing of the reflected signals, JTFDR is shown to be capable of overcoming those limitations. JTFDR is experimentally proven to be successful for detecting and locating both hard and incipient defects. The prognostic capabilities of JTFDR are also demonstrated via accelerated ageing tests of an electric power cable. By utilising the incident/reflected signal information in the time and frequency domains simultaneously, JTFDR is proven to be a more effective diagnostic technique than the classical TDR and FDR. JTFDR can also be used to monitor incipient defects and better predict hard defects before they occur.2010

UR - http://www.scopus.com/inward/record.url?scp=79952942219&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79952942219&partnerID=8YFLogxK

U2 - 10.1049/iet-spr.2009.0137

DO - 10.1049/iet-spr.2009.0137

M3 - Article

AN - SCOPUS:79952942219

VL - 4

SP - 395

EP - 405

JO - IET Signal Processing

JF - IET Signal Processing

SN - 1751-9675

IS - 4

ER -