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Effect of short circuit currents on thermo-mechanical properties of insulated cables

Effect of short circuit currents on thermo-mechanical properties of insulated cables
Effect of short circuit currents on thermo-mechanical properties of insulated cables
Cables are expected to have the ability to safely carry the rated short circuit current during abnormal dynamic conditions, such that a through fault does not damage the whole cable. For XLPE insulated cables, the maximum temperature during short circuits should not exceed 250 °C. This temperature must not adversely affect the conductor or the lead sheath. However, the effect of the thermo-mechanical stresses generated on the speed of degradation of the insulation system is of great importance. This paper analyses the influence of short circuit current on the interface between the cable sheath and insulation. Based on the theory of elasticity, a finite element thermomechanical model is proposed of a single core cable, incorporating temperature-dependent properties. The model demonstrates the importance of the mechanical properties of the insulation material, which plays a critical role in understanding the internal thermomechanical stresses within a cable.
414-417
IEEE
Hamdan, Mohammad, Anan
639f4b40-1f39-487d-9d46-9b4e38208dd4
Pilgrim, James
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Hamdan, Mohammad, Anan
639f4b40-1f39-487d-9d46-9b4e38208dd4
Pilgrim, James
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e

Hamdan, Mohammad, Anan, Pilgrim, James and Lewin, Paul (2018) Effect of short circuit currents on thermo-mechanical properties of insulated cables. In 2018 IEEE CEIDP Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2018. vol. 2018-October, IEEE. pp. 414-417 . (doi:10.1109/CEIDP.2018.8544740).

Record type: Conference or Workshop Item (Paper)

Abstract

Cables are expected to have the ability to safely carry the rated short circuit current during abnormal dynamic conditions, such that a through fault does not damage the whole cable. For XLPE insulated cables, the maximum temperature during short circuits should not exceed 250 °C. This temperature must not adversely affect the conductor or the lead sheath. However, the effect of the thermo-mechanical stresses generated on the speed of degradation of the insulation system is of great importance. This paper analyses the influence of short circuit current on the interface between the cable sheath and insulation. Based on the theory of elasticity, a finite element thermomechanical model is proposed of a single core cable, incorporating temperature-dependent properties. The model demonstrates the importance of the mechanical properties of the insulation material, which plays a critical role in understanding the internal thermomechanical stresses within a cable.

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Effect of Short Circuit Currents on Thermo mechanical Properties of Insulated Cables _1155_final - Accepted Manuscript
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Accepted/In Press date: 30 June 2018
Published date: 26 November 2018
Venue - Dates: Conference on Electrical Insulation and Dielectric Phenomena, Iberostar Cancun, Cancun, Mexico, 2018-10-21 - 2018-10-24

Identifiers

Local EPrints ID: 423207
URI: http://eprints.soton.ac.uk/id/eprint/423207
PURE UUID: 223ab2e5-d2fd-43e7-99ea-551baef321fe
ORCID for James Pilgrim: ORCID iD orcid.org/0000-0002-2444-2116

Catalogue record

Date deposited: 19 Sep 2018 16:30
Last modified: 26 Nov 2021 02:50

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Contributors

Author: Mohammad, Anan Hamdan
Author: James Pilgrim ORCID iD
Author: Paul Lewin

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