TU Darmstadt / ULB / TUprints

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

Verschaffel-Drefke, Christoph ; Schedel, Markus ; Balzer, Constantin ; Hinrichsen, Volker ; Sass, Ingo (2022)
Heat Dissipation in Variable Underground Power Cable Beddings: Experiences from a Real Scale Field Experiment.
In: Energies, 2022, 14 (21)
doi: 10.26083/tuprints-00020074
Article, Secondary publication, Publisher's Version

Copyright Information: CC BY 4.0 International - Creative Commons, Attribution.

Download (7MB) | Preview
Item Type: Article
Type of entry: Secondary publication
Title: Heat Dissipation in Variable Underground Power Cable Beddings: Experiences from a Real Scale Field Experiment
Language: English
Date: 29 April 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: MDPI
Journal or Publication Title: Energies
Volume of the journal: 14
Issue Number: 21
Collation: 24 Seiten
DOI: 10.26083/tuprints-00020074
Corresponding Links:
Origin: Secondary publication DeepGreen

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.

Uncontrolled Keywords: ampacity rating, bedding material, field experiment, heat dissipation, thermal cable rating, underground power cable
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-200742
Classification DDC: 500 Science and mathematics > 550 Earth sciences and geology
600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 11 Department of Materials and Earth Sciences > Earth Science > Geothermal Science and Technology
Exzellenzinitiative > Graduate Schools > Graduate School of Energy Science and Engineering (ESE)
Date Deposited: 29 Apr 2022 08:59
Last Modified: 14 Nov 2023 19:04
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20074
PPN: 500234485
Actions (login required)
View Item View Item