CHT Prediction of Thermal State of Underground Conductor in Power Distribution Networks
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Date
2019-02-24
Journal Title
Journal ISSN
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Publisher
Universty Of El-oued جامعة الوادي
Abstract
This research aims at a deeper understanding of the
steady-state thermal behavior of underground cables using
Computational Heat Transfer (CHT) techniques modeling. The
results concern the thermal study of 33 kV single and multiple
copper conductors with a nominal conductor cross-section of 615
mm2 buried in the ground for a single cable, two cables and for
three cables in horizontal position. The most unfavorable
summer conditions, the burial depth as well as the physical
properties of the soil as a function of the moisture content, are
studied. The operating current of the conductors is taken 940 A.
The results show that the temperature of the cables decreases
with the burial depth, a compromise temperature/cost of
installation corresponds to 80 cm of burial depth. Further, the
maximum temperature of a single cable buried in the ground is
considerably lower than that allowed (363 K) for a good use,
namely 313 K in summer conditions, so there is a considerable
margin to increase its ampacity, also the temperature decrease
with increase of water content of the soil surrounding the cable of
approximately 2 to 5 degrees. The results obtained are in good
agreement with those of the literature.
Description
Intervention
Keywords
—underground cables, ampacity, thermal state, power distribution networks, CHT modeling
Citation
Sid Ali Koubili .M’hamed Beriache .Nor Azwadi Che Sidik .Meziane Nasreddine .Belarbi Abdelillah Abed .Mokhtar Saïdia Leila .CHT Prediction of Thermal State of Underground Conductor in Power Distribution Networks .. International Symposium on Technology & Sustainable Industry Development, ISTSID’2019. Faculty Of Technology. University Of Eloued. [Visited in ../../….]. Available from [copy the link here].