Fault location and diagnosis in medium voltage shielded power cable

Alistair Reid; Chengke Zhou; Donald Hepburn; Martin D. Judd; Wah Hoon Siew; Philip  Withers

doi:10.1109/TDEI.2013.6451336

Fault location and diagnosis in medium voltage shielded power cable

Alistair Reid, Chengke Zhou, Donald Hepburn, Martin D. Judd, Wah Hoon Siew, Philip Withers

Research output: Contribution to journal › Article › peer-review

Abstract

This paper presents a case study on fault location, characterization and diagnosis in a length of shielded 11 kV medium voltage ethylene-propylene rubber (EPR) power cable. The defect was identified on-site as a low resistance fault occurring between the sheath and the core. A 43 m section was removed for further analysis. The fault resistance was characterized and the location of the defect pinpointed to within a few cm using a combination of time-difference-of-arrival location and infra-red imaging. A combination of X-ray computed tomography, scanning electron microscopy and energy dispersive X-ray spectroscopy were then applied to characterize any abnormalities in the dielectric surrounding the breakdown region.

Original language	English
Pages (from-to)	10-18
Number of pages	9
Journal	IEEE Transactions on Dielectrics and Electrical Insulation
Volume	20
Issue number	1
DOIs	https://doi.org/10.1109/TDEI.2013.6451336
Publication status	Published - Feb 2012

Keywords

condition monitoring
power system faults
dielectric breakdown
power cable insulation
X-ray imaging

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abstract = "This paper presents a case study on fault location, characterization and diagnosis in a length of shielded 11 kV medium voltage ethylene-propylene rubber (EPR) power cable. The defect was identified on-site as a low resistance fault occurring between the sheath and the core. A 43 m section was removed for further analysis. The fault resistance was characterized and the location of the defect pinpointed to within a few cm using a combination of time-difference-of-arrival location and infra-red imaging. A combination of X-ray computed tomography, scanning electron microscopy and energy dispersive X-ray spectroscopy were then applied to characterize any abnormalities in the dielectric surrounding the breakdown region.",

keywords = " condition monitoring , power system faults, dielectric breakdown , power cable insulation , X-ray imaging",

author = "Alistair Reid and Chengke Zhou and Donald Hepburn and Judd, {Martin D.} and Siew, {Wah Hoon} and Philip Withers",

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AU - Zhou, Chengke

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AU - Siew, Wah Hoon

AU - Withers, Philip

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AB - This paper presents a case study on fault location, characterization and diagnosis in a length of shielded 11 kV medium voltage ethylene-propylene rubber (EPR) power cable. The defect was identified on-site as a low resistance fault occurring between the sheath and the core. A 43 m section was removed for further analysis. The fault resistance was characterized and the location of the defect pinpointed to within a few cm using a combination of time-difference-of-arrival location and infra-red imaging. A combination of X-ray computed tomography, scanning electron microscopy and energy dispersive X-ray spectroscopy were then applied to characterize any abnormalities in the dielectric surrounding the breakdown region.

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