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Managing cable thermal stress through predictive ratings

Managing cable thermal stress through predictive ratings
Managing cable thermal stress through predictive ratings
The majority of high voltage cables are sized and operated by a continuous current rating which is based on the worst-case assumptions. However, the load on the cables themselves may vary significantly depending upon the time and season. In this paper, a dynamic thermal model for a cable in air installation is built using the finite difference method. The real-time load current and ambient conditions are accessible to allow improved cable modelling. This model is then used to support the rating calculations, the accuracy of which is compared with results obtained from laboratory experiments. A prediction system has been developed to predict the rating from any point forward within the next 24 hours.
cable, dynamic thermal rating, finite difference method, thermal analysis
978-1-4799-7354-5
110-113
Huang, R.
0f0030b4-3a83-4840-a817-745087536771
Pilgrim, J.A.
50bdbf8d-4214-49e4-ad4e-80f1c8e742ad
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Scott, D.
4f3dd604-c3fc-4051-b81c-87ccdbe1ca43
Morrice, D.
224de832-eccb-454c-b24b-c86cc3d25b5d
Huang, R.
0f0030b4-3a83-4840-a817-745087536771
Pilgrim, J.A.
50bdbf8d-4214-49e4-ad4e-80f1c8e742ad
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Scott, D.
4f3dd604-c3fc-4051-b81c-87ccdbe1ca43
Morrice, D.
224de832-eccb-454c-b24b-c86cc3d25b5d

Huang, R., Pilgrim, J.A., Lewin, P.L., Scott, D. and Morrice, D. (2015) Managing cable thermal stress through predictive ratings. 2015 IEEE Electrical Insulation Conference (EIC), United States. 07 - 10 Jun 2015. pp. 110-113 .

Record type: Conference or Workshop Item (Paper)

Abstract

The majority of high voltage cables are sized and operated by a continuous current rating which is based on the worst-case assumptions. However, the load on the cables themselves may vary significantly depending upon the time and season. In this paper, a dynamic thermal model for a cable in air installation is built using the finite difference method. The real-time load current and ambient conditions are accessible to allow improved cable modelling. This model is then used to support the rating calculations, the accuracy of which is compared with results obtained from laboratory experiments. A prediction system has been developed to predict the rating from any point forward within the next 24 hours.

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More information

Published date: 7 June 2015
Venue - Dates: 2015 IEEE Electrical Insulation Conference (EIC), United States, 2015-06-07 - 2015-06-10
Keywords: cable, dynamic thermal rating, finite difference method, thermal analysis
Organisations: EEE

Identifiers

Local EPrints ID: 378057
URI: http://eprints.soton.ac.uk/id/eprint/378057
ISBN: 978-1-4799-7354-5
PURE UUID: 3c8d0e99-394e-4bf4-b3cd-451c20528b31

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Date deposited: 15 Jun 2015 14:14
Last modified: 09 Dec 2019 19:52

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Contributors

Author: R. Huang
Author: J.A. Pilgrim
Author: P.L. Lewin
Author: D. Scott
Author: D. Morrice

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