Review of the accuracy of Single Core Equivalent Thermal Model (SCETM) for Offshore Wind Farm (OWF) cables
Review of the accuracy of Single Core Equivalent Thermal Model (SCETM) for Offshore Wind Farm (OWF) cables
Cables intended to interconnect OWFs with the mainland are currently treated as SL-type (Separate Lead) cables by IEC 60287. A SCETM is implied, i.e. a thermal model accounting for 1-D (radial) heat transfer only. While this approach is expected to be reasonable when smaller cables are rated, the 1-D representation is less valid in larger cable sizes. This paper uses 2-D finite element models to reveal certain weak points of the representation of the thermal resistances in the existing SCETM. For constant losses, the IEC SCETM seems to underestimate the temperature by up to 8oC. Suitable replacement formulae are proposed which could improve the accuracy of the SCETM. Finally, the issue of non-solid fillers is considered and modelling guidelines are given.
1913-1921
Chatzipetros, Dimitrios
9874f8d6-04ee-43d9-af5d-5a80d0acf990
Pilgrim, James A.
4b4f7933-1cd8-474f-bf69-39cefc376ab7
11 May 2018
Chatzipetros, Dimitrios
9874f8d6-04ee-43d9-af5d-5a80d0acf990
Pilgrim, James A.
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Chatzipetros, Dimitrios and Pilgrim, James A.
(2018)
Review of the accuracy of Single Core Equivalent Thermal Model (SCETM) for Offshore Wind Farm (OWF) cables.
IEEE Transactions on Power Delivery, 33 (4), .
(doi:10.1109/TPWRD.2017.2770321).
Abstract
Cables intended to interconnect OWFs with the mainland are currently treated as SL-type (Separate Lead) cables by IEC 60287. A SCETM is implied, i.e. a thermal model accounting for 1-D (radial) heat transfer only. While this approach is expected to be reasonable when smaller cables are rated, the 1-D representation is less valid in larger cable sizes. This paper uses 2-D finite element models to reveal certain weak points of the representation of the thermal resistances in the existing SCETM. For constant losses, the IEC SCETM seems to underestimate the temperature by up to 8oC. Suitable replacement formulae are proposed which could improve the accuracy of the SCETM. Finally, the issue of non-solid fillers is considered and modelling guidelines are given.
Text
SCETM_DChatz_JAPilg_Final
- Accepted Manuscript
More information
Accepted/In Press date: 27 October 2017
e-pub ahead of print date: 7 November 2017
Published date: 11 May 2018
Identifiers
Local EPrints ID: 415374
URI: http://eprints.soton.ac.uk/id/eprint/415374
ISSN: 0885-8977
PURE UUID: ce2edd83-8e1d-41e9-9071-c3e031885c04
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Date deposited: 08 Nov 2017 17:30
Last modified: 16 Mar 2024 05:53
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Author:
Dimitrios Chatzipetros
Author:
James A. Pilgrim
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