Heat Dissipation in Variable Underground Power Cable Beddings: Experiences from a Real Scale Field Experiment

To prevent accelerated thermal aging or insulation faults in cable systems due to overheating, the current carrying capacity is usually limited by specific conductor temperatures. As the heat produced during the operation of underground cables has to be dissipated to the environment, the actual curr...

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Autores principales:	Christoph Verschaffel-Drefke, Markus Schedel, Constantin Balzer, Volker Hinrichsen, Ingo Sass
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	ampacity rating bedding material field experiment heat dissipation thermal cable rating underground power cable Technology T
Acceso en línea:	https://doaj.org/article/9603490335e0413083cbb83665cc000a
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spelling	oai:doaj.org-article:9603490335e0413083cbb83665cc000a2021-11-11T15:57:39ZHeat Dissipation in Variable Underground Power Cable Beddings: Experiences from a Real Scale Field Experiment10.3390/en142171891996-1073https://doaj.org/article/9603490335e0413083cbb83665cc000a2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7189https://doaj.org/toc/1996-1073To prevent accelerated thermal aging or insulation faults in cable systems due to overheating, the current carrying capacity is usually limited by specific conductor temperatures. As the heat produced during the operation of underground cables has to be dissipated to the environment, the actual current carrying capacity of a power cable system is primarily dependent on the thermal properties of the surrounding porous bedding material and soil. To investigate the heat dissipation processes around buried power cables of real scale and with realistic electric loading, a field experiment consisting of a main field with various cable configurations, laid in four different bedding materials, and a side field with additional cable trenches for thermally enhanced bedding materials and protection pipe systems was planned and constructed. The experimental results present the strong influences of the different bedding materials on the maximum cable ampacity. Alongside the importance of the basic thermal properties, the influence of the bedding’s hydraulic properties, especially on the drying and rewetting effects, were observed. Furthermore, an increase in ampacity between 25% and 35% was determined for a cable system in a duct filled with an artificial grouting material compared to a common air-filled ducted system.Christoph Verschaffel-DrefkeMarkus SchedelConstantin BalzerVolker HinrichsenIngo SassMDPI AGarticleampacity ratingbedding materialfield experimentheat dissipationthermal cable ratingunderground power cableTechnologyTENEnergies, Vol 14, Iss 7189, p 7189 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ampacity rating bedding material field experiment heat dissipation thermal cable rating underground power cable Technology T
spellingShingle	ampacity rating bedding material field experiment heat dissipation thermal cable rating underground power cable Technology T Christoph Verschaffel-Drefke Markus Schedel Constantin Balzer Volker Hinrichsen Ingo Sass Heat Dissipation in Variable Underground Power Cable Beddings: Experiences from a Real Scale Field Experiment
description	To prevent accelerated thermal aging or insulation faults in cable systems due to overheating, the current carrying capacity is usually limited by specific conductor temperatures. As the heat produced during the operation of underground cables has to be dissipated to the environment, the actual current carrying capacity of a power cable system is primarily dependent on the thermal properties of the surrounding porous bedding material and soil. To investigate the heat dissipation processes around buried power cables of real scale and with realistic electric loading, a field experiment consisting of a main field with various cable configurations, laid in four different bedding materials, and a side field with additional cable trenches for thermally enhanced bedding materials and protection pipe systems was planned and constructed. The experimental results present the strong influences of the different bedding materials on the maximum cable ampacity. Alongside the importance of the basic thermal properties, the influence of the bedding’s hydraulic properties, especially on the drying and rewetting effects, were observed. Furthermore, an increase in ampacity between 25% and 35% was determined for a cable system in a duct filled with an artificial grouting material compared to a common air-filled ducted system.
format	article
author	Christoph Verschaffel-Drefke Markus Schedel Constantin Balzer Volker Hinrichsen Ingo Sass
author_facet	Christoph Verschaffel-Drefke Markus Schedel Constantin Balzer Volker Hinrichsen Ingo Sass
author_sort	Christoph Verschaffel-Drefke
title	Heat Dissipation in Variable Underground Power Cable Beddings: Experiences from a Real Scale Field Experiment
title_short	Heat Dissipation in Variable Underground Power Cable Beddings: Experiences from a Real Scale Field Experiment
title_full	Heat Dissipation in Variable Underground Power Cable Beddings: Experiences from a Real Scale Field Experiment
title_fullStr	Heat Dissipation in Variable Underground Power Cable Beddings: Experiences from a Real Scale Field Experiment
title_full_unstemmed	Heat Dissipation in Variable Underground Power Cable Beddings: Experiences from a Real Scale Field Experiment
title_sort	heat dissipation in variable underground power cable beddings: experiences from a real scale field experiment
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/9603490335e0413083cbb83665cc000a
work_keys_str_mv	AT christophverschaffeldrefke heatdissipationinvariableundergroundpowercablebeddingsexperiencesfromarealscalefieldexperiment AT markusschedel heatdissipationinvariableundergroundpowercablebeddingsexperiencesfromarealscalefieldexperiment AT constantinbalzer heatdissipationinvariableundergroundpowercablebeddingsexperiencesfromarealscalefieldexperiment AT volkerhinrichsen heatdissipationinvariableundergroundpowercablebeddingsexperiencesfromarealscalefieldexperiment AT ingosass heatdissipationinvariableundergroundpowercablebeddingsexperiencesfromarealscalefieldexperiment
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Heat Dissipation in Variable Underground Power Cable Beddings: Experiences from a Real Scale Field Experiment

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