Preliminary communication

https://doi.org/10.17559/TV-20181029214825

Effect of Solar Radiation on Current-Carrying Capacity of PVC-insulated Power Cables – the Numerical Point of View

Stanislaw Czapp* orcid.org/0000-0002-1341-8276 ; Faculty of Electrical and Control Engineering, Gdansk University of Technology, Narutowicza 11/12, PL-80-233 Gdansk, Poland
Seweryn Szultka ; Faculty of Electrical and Control Engineering, Gdansk University of Technology, Narutowicza 11/12, PL-80-233 Gdansk, Poland
Adam Tomaszewski orcid.org/0000-0003-2122-8162 ; Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14, PL-80-231 Gdansk, Poland
Agata Szultka ; Faculty of Electrical and Control Engineering, Gdansk University of Technology, Narutowicza 11/12, PL-80-233 Gdansk, Poland

Abstract

Power cables are usually buried in the soil, which results in their relatively high current-carrying capacity. However, there are cases in which the starting/final section of a cable line runs along a pole of an overhead power line. Power cables can be directly exposed to solar radiation then, and this negatively influences their current-carrying capacity as well as estimated life of the cables’ insulation. An analysis of thermal phenomena in PVC-insulated low-voltage power cables, exposed to solar radiation, is conducted in the paper. Current-carrying capacity of an example cable system, for various placements of the cables, is evaluated. The analysis has shown that solar radiation may significantly reduce current-carrying capacity of PVC-insulated cables. A possible method of protection of cables against solar radiation, and its effectiveness, is presented. To investigate the mentioned thermal phenomena, a Computational Fluid Dynamics (CFD) has been used.

Keywords

finite volume method; fluid flow; numerical simulation; power system analysis computing; thermal analysis

Hrčak ID:

228533

URI

https://hrcak.srce.hr/228533

Publication date:

27.11.2019.

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