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Induced losses in non-magnetically armoured HVAC windfarm export cables

Induced losses in non-magnetically armoured HVAC windfarm export cables
Induced losses in non-magnetically armoured HVAC windfarm export cables
Presently, IEC 60287-1-1 is used to calculate the ratio of induced loss in a cable’s metal sheath to its conductor loss (λ1), considering uniform current density in both conductors and sheaths. Although this assumption is reasonable for smaller cables, it becomes questionable for larger cables in close proximity, such as three-core (3C) export cables in Offshore Wind Farm (OWF) projects. The present study employs 2-D Finite Element (FE) models to evaluate how accurate the Standard method for calculating the λ1 factor is in cables with non-magnetic armour. Their validity is further enhanced by measurements in a 3x1000 mm2 155 kV unarmoured cable. IEC 60287 appears to overestimate the temperature, particularly for larger conductor sizes, by up to 7°C. Finally, suitable Reductive Factors (RFs) are derived which could improve the accuracy of the IEC method.
Chatzipetros, Dimitrios
9874f8d6-04ee-43d9-af5d-5a80d0acf990
Pilgrim, James
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Chatzipetros, Dimitrios
9874f8d6-04ee-43d9-af5d-5a80d0acf990
Pilgrim, James
4b4f7933-1cd8-474f-bf69-39cefc376ab7

Chatzipetros, Dimitrios and Pilgrim, James (2018) Induced losses in non-magnetically armoured HVAC windfarm export cables. ICHVE International conference on high voltage engineering 2018, Athens, Athens, Greece. 10 - 13 Sep 2018. 4 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Presently, IEC 60287-1-1 is used to calculate the ratio of induced loss in a cable’s metal sheath to its conductor loss (λ1), considering uniform current density in both conductors and sheaths. Although this assumption is reasonable for smaller cables, it becomes questionable for larger cables in close proximity, such as three-core (3C) export cables in Offshore Wind Farm (OWF) projects. The present study employs 2-D Finite Element (FE) models to evaluate how accurate the Standard method for calculating the λ1 factor is in cables with non-magnetic armour. Their validity is further enhanced by measurements in a 3x1000 mm2 155 kV unarmoured cable. IEC 60287 appears to overestimate the temperature, particularly for larger conductor sizes, by up to 7°C. Finally, suitable Reductive Factors (RFs) are derived which could improve the accuracy of the IEC method.

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ICHVE Full Paper Rev 1 D Chatzipetros J A Pilgrim - Accepted Manuscript
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Submitted date: 5 August 2018
Published date: 13 September 2018
Venue - Dates: ICHVE International conference on high voltage engineering 2018, Athens, Athens, Greece, 2018-09-10 - 2018-09-13

Identifiers

Local EPrints ID: 423009
URI: http://eprints.soton.ac.uk/id/eprint/423009
PURE UUID: 7b753e69-201e-43be-b2db-63ee6d35ed5f
ORCID for James Pilgrim: ORCID iD orcid.org/0000-0002-2444-2116

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Date deposited: 09 Aug 2018 16:30
Last modified: 12 Dec 2021 03:33

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Contributors

Author: Dimitrios Chatzipetros
Author: James Pilgrim ORCID iD

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