Current rating methodology for mass impregnated HVDC cables
Current rating methodology for mass impregnated HVDC cables
Calculating the current rating of HVDC cable systems is less straightforward than for ac cables, which are always thermally limited. While the permissible current in an HVDC cable circuit may be limited by the operating temperature of the dielectric, it may also be restricted by the electric stress within the dielectric. Conventional current rating calculations such as IEC 60287 are thus ill suited to HVDC applications. This paper demonstrates the importance of the electric stress constraint through the application of finite element modeling techniques which permit a coupling of the thermal and electrical properties within the cable. The results obtained demonstrate that changes within the installation environment cause the limiting factor to switch from thermal to electrical under steady state conditions, demonstrating the importance of developing calculation methods which can represent both cases.
978-1-4673-4739-6
513-517
Huang, Z.Y.
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Pilgrim, J.A.
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Lewin, P.L.
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Swingler, S.G.
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Payne, D.
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2 June 2013
Huang, Z.Y.
d9ec7ad6-0803-411d-81c5-3969f419fd44
Pilgrim, J.A.
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Swingler, S.G.
4f13fbb2-7d2e-480a-8687-acea6a4ed735
Payne, D.
9a783127-bf02-4dfd-9a73-501a091a80df
Huang, Z.Y., Pilgrim, J.A., Lewin, P.L., Swingler, S.G. and Payne, D.
(2013)
Current rating methodology for mass impregnated HVDC cables.
IEEE 2013 Electrical Insulation Conference, Ottawa, Canada.
02 - 05 Jun 2013.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Calculating the current rating of HVDC cable systems is less straightforward than for ac cables, which are always thermally limited. While the permissible current in an HVDC cable circuit may be limited by the operating temperature of the dielectric, it may also be restricted by the electric stress within the dielectric. Conventional current rating calculations such as IEC 60287 are thus ill suited to HVDC applications. This paper demonstrates the importance of the electric stress constraint through the application of finite element modeling techniques which permit a coupling of the thermal and electrical properties within the cable. The results obtained demonstrate that changes within the installation environment cause the limiting factor to switch from thermal to electrical under steady state conditions, demonstrating the importance of developing calculation methods which can represent both cases.
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Published date: 2 June 2013
Venue - Dates:
IEEE 2013 Electrical Insulation Conference, Ottawa, Canada, 2013-06-02 - 2013-06-05
Organisations:
EEE
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Local EPrints ID: 353306
URI: http://eprints.soton.ac.uk/id/eprint/353306
ISBN: 978-1-4673-4739-6
PURE UUID: d2c16829-7236-4f77-8fba-61552f8e573b
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Date deposited: 04 Jun 2013 14:43
Last modified: 15 Mar 2024 03:25
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Contributors
Author:
Z.Y. Huang
Author:
J.A. Pilgrim
Author:
P.L. Lewin
Author:
S.G. Swingler
Author:
D. Payne
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