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Low computational cost model for convective heat transfer from submarine cables

Low computational cost model for convective heat transfer from submarine cables
Low computational cost model for convective heat transfer from submarine cables
The ampacity of submarine cable circuits is strongly influenced by heat transfer in the marine environment surrounding the cable. It has been demonstrated in previous work that for high permeability sediments convective heat transfer can play a significant role using both bespoke two dimensional models and experimental investigations [1,2]. This paper introduces a one dimensional model which is capable of calculating cable temperatures within both convective and conductive sediments. Agreement between the one dimensional model and a two dimensional simulation was found to be within 1.5°C. The model is used to demonstrate that the ampacity of power cables may be significantly increased due to convective heat transfer. Further, the one dimensional model offers significant savings in computational time and cost compared to the two dimensional equivalent model. This allows the analysis of large DTS data sets in order to calculate: dynamic ratings; burial depths; and the long-term (annual to decadal) performance of the cable.
0885-8977
Callender, George
4189d79e-34c3-422c-a601-95b156c27e76
Ellis, Daniel
f15e8463-b832-4719-a749-ddf88de8bec5
Goddard, Kevin
fe2a2194-8b55-43c1-bdca-341691b71b2d
Dix, Justin
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Pilgrim, James
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Erdmann, Matthias
3d96f444-3be1-4fa4-b211-6eb102a2aa21
Callender, George
4189d79e-34c3-422c-a601-95b156c27e76
Ellis, Daniel
f15e8463-b832-4719-a749-ddf88de8bec5
Goddard, Kevin
fe2a2194-8b55-43c1-bdca-341691b71b2d
Dix, Justin
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Pilgrim, James
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Erdmann, Matthias
3d96f444-3be1-4fa4-b211-6eb102a2aa21

Callender, George, Ellis, Daniel, Goddard, Kevin, Dix, Justin, Pilgrim, James and Erdmann, Matthias (2020) Low computational cost model for convective heat transfer from submarine cables. IEEE Transactions on Power Delivery. (doi:10.1109/TPWRD.2020.2991783).

Record type: Article

Abstract

The ampacity of submarine cable circuits is strongly influenced by heat transfer in the marine environment surrounding the cable. It has been demonstrated in previous work that for high permeability sediments convective heat transfer can play a significant role using both bespoke two dimensional models and experimental investigations [1,2]. This paper introduces a one dimensional model which is capable of calculating cable temperatures within both convective and conductive sediments. Agreement between the one dimensional model and a two dimensional simulation was found to be within 1.5°C. The model is used to demonstrate that the ampacity of power cables may be significantly increased due to convective heat transfer. Further, the one dimensional model offers significant savings in computational time and cost compared to the two dimensional equivalent model. This allows the analysis of large DTS data sets in order to calculate: dynamic ratings; burial depths; and the long-term (annual to decadal) performance of the cable.

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e-pub ahead of print date: 6 May 2020

Identifiers

Local EPrints ID: 440988
URI: http://eprints.soton.ac.uk/id/eprint/440988
ISSN: 0885-8977
PURE UUID: 18b673e0-786a-4f7a-8207-bdcc9c5aef2b
ORCID for James Pilgrim: ORCID iD orcid.org/0000-0002-2444-2116

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Date deposited: 27 May 2020 16:30
Last modified: 07 Oct 2020 07:41

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