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Rating of cables in unfilled surface troughs

Rating of cables in unfilled surface troughs
Rating of cables in unfilled surface troughs
Cable circuits installed in unfilled troughs must often support high current ratings. To achieve higher ratings in unfilled troughs in the U.K., trough lids can be replaced by ventilated grilles, provided that the trough is within a substation site. While several methods exist for rating the traditional covered trough design, no standard method exists for naturally ventilated installations. To examine the possible uprating available, a coupled numerical model has been created for cable trough installations. Following successful benchmarking tests where the covered trough was modelled, the method has been extended to troughs with full natural ventilation. The results have been compared to commonly used engineering assumptions in order to validate simpler analytical methods. It was found that by allowing full natural ventilation of existing covered troughs, the continuous rating could be increased by as much as 28%.
power cable thermal factors, power transmission
0885-8977
993-1001
Pilgrim, James
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Larsen, Steffen
1104102d-0462-4464-8ab1-1cb43cf113ac
Waite, Francis
e7553037-3072-46ea-9bf4-b9dc9e006abb
Payne, David
1101532b-f1a6-4da9-a451-1e3666d63458
Pilgrim, James
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Larsen, Steffen
1104102d-0462-4464-8ab1-1cb43cf113ac
Waite, Francis
e7553037-3072-46ea-9bf4-b9dc9e006abb
Payne, David
1101532b-f1a6-4da9-a451-1e3666d63458

Pilgrim, James, Lewin, Paul, Larsen, Steffen, Waite, Francis and Payne, David (2012) Rating of cables in unfilled surface troughs. IEEE Transactions on Power Delivery, 27 (2), 993-1001. (doi:10.1109/TPWRD.2012.2186593).

Record type: Article

Abstract

Cable circuits installed in unfilled troughs must often support high current ratings. To achieve higher ratings in unfilled troughs in the U.K., trough lids can be replaced by ventilated grilles, provided that the trough is within a substation site. While several methods exist for rating the traditional covered trough design, no standard method exists for naturally ventilated installations. To examine the possible uprating available, a coupled numerical model has been created for cable trough installations. Following successful benchmarking tests where the covered trough was modelled, the method has been extended to troughs with full natural ventilation. The results have been compared to commonly used engineering assumptions in order to validate simpler analytical methods. It was found that by allowing full natural ventilation of existing covered troughs, the continuous rating could be increased by as much as 28%.

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Troughs_Journal_R2finalPOSTPRINT.pdf - Accepted Manuscript
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More information

Published date: April 2012
Keywords: power cable thermal factors, power transmission
Organisations: EEE

Identifiers

Local EPrints ID: 336805
URI: http://eprints.soton.ac.uk/id/eprint/336805
ISSN: 0885-8977
PURE UUID: a099cbc0-43ca-49f6-ac0e-a911c199332e
ORCID for James Pilgrim: ORCID iD orcid.org/0000-0002-2444-2116

Catalogue record

Date deposited: 05 Apr 2012 09:07
Last modified: 21 Nov 2021 02:57

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Contributors

Author: James Pilgrim ORCID iD
Author: Paul Lewin
Author: Steffen Larsen
Author: Francis Waite
Author: David Payne

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