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Impact of moisture migration on the current rating of high operating temperature power cables

Impact of moisture migration on the current rating of high operating temperature power cables
Impact of moisture migration on the current rating of high operating temperature power cables
Operating temperatures of conventional high voltage transmission cables are generally restricted to 90°C in order to prevent thermal damage occurring to the XLPE dielectric. However new polymeric dielectrics may allow higher conductor temperatures, potentially increasing the current rating of the cable circuit. For buried cables this increases the rate of moisture migration away from the cable circuit, thus increasing the ground thermal resistivity. This paper outlines the development of a dynamic backfill model which permits moisture migration to be modelled explicitly. The model is then used to determine the likely magnitude of rating increase available from the deployment of high temperature cables on the transmission network.
current ratings, moisture migration, finite element analysis
222-227
Pilgrim, James
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Swaffield, David
a49c59cd-9f76-456a-a948-a479b9a1c154
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Swingler, Steve
4f13fbb2-7d2e-480a-8687-acea6a4ed735
Waite, Francis
e7553037-3072-46ea-9bf4-b9dc9e006abb
Payne, David
1101532b-f1a6-4da9-a451-1e3666d63458
Pilgrim, James
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Swaffield, David
a49c59cd-9f76-456a-a948-a479b9a1c154
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Swingler, Steve
4f13fbb2-7d2e-480a-8687-acea6a4ed735
Waite, Francis
e7553037-3072-46ea-9bf4-b9dc9e006abb
Payne, David
1101532b-f1a6-4da9-a451-1e3666d63458

Pilgrim, James, Swaffield, David, Lewin, Paul, Swingler, Steve, Waite, Francis and Payne, David (2011) Impact of moisture migration on the current rating of high operating temperature power cables. 8th International Conference on Insulated Power Cables, France. 19 - 23 Jun 2011. pp. 222-227 .

Record type: Conference or Workshop Item (Other)

Abstract

Operating temperatures of conventional high voltage transmission cables are generally restricted to 90°C in order to prevent thermal damage occurring to the XLPE dielectric. However new polymeric dielectrics may allow higher conductor temperatures, potentially increasing the current rating of the cable circuit. For buried cables this increases the rate of moisture migration away from the cable circuit, thus increasing the ground thermal resistivity. This paper outlines the development of a dynamic backfill model which permits moisture migration to be modelled explicitly. The model is then used to determine the likely magnitude of rating increase available from the deployment of high temperature cables on the transmission network.

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More information

Published date: 22 June 2011
Venue - Dates: 8th International Conference on Insulated Power Cables, France, 2011-06-19 - 2011-06-23
Keywords: current ratings, moisture migration, finite element analysis
Organisations: EEE

Identifiers

Local EPrints ID: 272528
URI: http://eprints.soton.ac.uk/id/eprint/272528
PURE UUID: b09f6cff-36d2-4f52-954a-74ba721abbf6
ORCID for James Pilgrim: ORCID iD orcid.org/0000-0002-2444-2116

Catalogue record

Date deposited: 27 Jun 2011 09:21
Last modified: 06 Jun 2018 12:41

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Contributors

Author: James Pilgrim ORCID iD
Author: David Swaffield
Author: Paul Lewin
Author: Steve Swingler
Author: Francis Waite
Author: David Payne

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