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The temperature dependence of insulation mechanical properties and its effect on interface pressure in cable joints

The temperature dependence of insulation mechanical properties and its effect on interface pressure in cable joints
The temperature dependence of insulation mechanical properties and its effect on interface pressure in cable joints
Contact pressure is a vital factor that controls the interfacial electrical breakdown strength. Loss of interface pressure between cable insulation and joint insulation must be avoided in practice to ensure a long life span of power cable joints.
The contact pressure depends on the temperature profile in the bulk material, the thermal characteristics and the mechanical properties of the insulation materials. In this paper, a mathematical model using the thermo-elastic equations was developed to estimate the contact pressure taking into account how the mechanical properties (elastic modulus and thermal expansion) change with temperature, along with a realistic radial temperature profile. Two
different approaches are compared, one using finite element analysis and the other using a set of differential equations which may be solved without the need for proprietary software.
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) The temperature dependence of insulation mechanical properties and its effect on interface pressure in cable joints. 2nd International Conference on Dielectrics, Danubius Hotel Helia, Budapest, Hungary. 01 - 05 Jul 2018. 4 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Contact pressure is a vital factor that controls the interfacial electrical breakdown strength. Loss of interface pressure between cable insulation and joint insulation must be avoided in practice to ensure a long life span of power cable joints.
The contact pressure depends on the temperature profile in the bulk material, the thermal characteristics and the mechanical properties of the insulation materials. In this paper, a mathematical model using the thermo-elastic equations was developed to estimate the contact pressure taking into account how the mechanical properties (elastic modulus and thermal expansion) change with temperature, along with a realistic radial temperature profile. Two
different approaches are compared, one using finite element analysis and the other using a set of differential equations which may be solved without the need for proprietary software.

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The Temperature Dependance of Insulation Mechanical Properties and its Effect on Interface Pressure in Cable Joints_Final - Accepted Manuscript
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More information

Published date: 1 July 2018
Venue - Dates: 2nd International Conference on Dielectrics, Danubius Hotel Helia, Budapest, Hungary, 2018-07-01 - 2018-07-05

Identifiers

Local EPrints ID: 423208
URI: http://eprints.soton.ac.uk/id/eprint/423208
PURE UUID: 54d77aa2-e4c9-4989-8ded-1c8424ab48f7
ORCID for James Pilgrim: ORCID iD orcid.org/0000-0002-2444-2116
ORCID for Paul Lewin: ORCID iD orcid.org/0000-0002-3299-2556

Catalogue record

Date deposited: 19 Sep 2018 16:30
Last modified: 03 Dec 2021 02:35

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Contributors

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

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