The University of Southampton
University of Southampton Institutional Repository
Warning ePrints Soton is experiencing an issue with some file downloads not being available. We are working hard to fix this. Please bear with us.

Partial discharge diagnostics of defective medium voltage three-phase PILC cables

Partial discharge diagnostics of defective medium voltage three-phase PILC cables
Partial discharge diagnostics of defective medium voltage three-phase PILC cables
There are a number of medium voltage (MV) power distribution cable networks worldwide that are constructed predominantly of mass impregnated paper cables - London being one of these. Paper insulated lead covered (PILC) cables were extensively laid in the 50s and 60s before the introduction of cheaper polymeric alternatives that were sufficiently reliable. The current operational state of these networks has shown a gradual increase in failure rates of the previously reliable paper cables that are drawing to the end of their expected design life. Utilities are faced with the prospect of the impending failure of large sections of their prized asset and are keen to develop tools to better understand the health of their hardware. The analysis of partial discharge (PD) signals produced by the cables has been identified as a economically viable option to provide continuous condition monitoring of PILC cable circuits. Clearly, a comprehensive understanding of how PD activity relates to the various failure mechanisms exhibited by cable circuits in the field is required. In order to generate representative and repeatable PD signals from a number of PILC cable samples under rated conditions, an experiment was designed and commissioned. The scope of this paper is to introduce two cable degradation mechanisms that were applied to test cable and show the associated PD activity that was produced. A recently published technique for PD source discrimination was coupled with an understanding of the system and applied to the experiment data to isolate the signals specific to each degradation mechanism
978-1-4673-0487-0
Hunter, J.A.
dae3e13b-a97e-4e81-a617-20ab6965da3c
Hao, L.
e6006548-3fc1-4a7e-9df4-a4e9a9a05c45
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Walton, C.
5b542bc7-7333-4e4a-9cf5-937fb449da66
Michel, M.
560e6263-d080-4126-827a-8ad1b36764d4
Hunter, J.A.
dae3e13b-a97e-4e81-a617-20ab6965da3c
Hao, L.
e6006548-3fc1-4a7e-9df4-a4e9a9a05c45
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Walton, C.
5b542bc7-7333-4e4a-9cf5-937fb449da66
Michel, M.
560e6263-d080-4126-827a-8ad1b36764d4

Hunter, J.A., Hao, L., Lewin, P.L., Walton, C. and Michel, M. (2012) Partial discharge diagnostics of defective medium voltage three-phase PILC cables. 2012 IEEE International Symposium on Electrical Insulation (ISEI 2012), San Juan, Puerto Rico. 09 - 12 Jun 2012. 5 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

There are a number of medium voltage (MV) power distribution cable networks worldwide that are constructed predominantly of mass impregnated paper cables - London being one of these. Paper insulated lead covered (PILC) cables were extensively laid in the 50s and 60s before the introduction of cheaper polymeric alternatives that were sufficiently reliable. The current operational state of these networks has shown a gradual increase in failure rates of the previously reliable paper cables that are drawing to the end of their expected design life. Utilities are faced with the prospect of the impending failure of large sections of their prized asset and are keen to develop tools to better understand the health of their hardware. The analysis of partial discharge (PD) signals produced by the cables has been identified as a economically viable option to provide continuous condition monitoring of PILC cable circuits. Clearly, a comprehensive understanding of how PD activity relates to the various failure mechanisms exhibited by cable circuits in the field is required. In order to generate representative and repeatable PD signals from a number of PILC cable samples under rated conditions, an experiment was designed and commissioned. The scope of this paper is to introduce two cable degradation mechanisms that were applied to test cable and show the associated PD activity that was produced. A recently published technique for PD source discrimination was coupled with an understanding of the system and applied to the experiment data to isolate the signals specific to each degradation mechanism

Text
080.pdf - Version of Record
Restricted to Repository staff only
Request a copy

More information

Published date: 11 June 2012
Venue - Dates: 2012 IEEE International Symposium on Electrical Insulation (ISEI 2012), San Juan, Puerto Rico, 2012-06-09 - 2012-06-12
Organisations: EEE

Identifiers

Local EPrints ID: 340715
URI: http://eprints.soton.ac.uk/id/eprint/340715
ISBN: 978-1-4673-0487-0
PURE UUID: c5ad51ab-1500-48ef-ad2d-c1ac00ed66ab

Catalogue record

Date deposited: 04 Jul 2012 12:33
Last modified: 20 Nov 2021 12:22

Export record

Contributors

Author: J.A. Hunter
Author: L. Hao
Author: P.L. Lewin
Author: C. Walton
Author: M. Michel

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×