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Thermal Behavior of Insulated Cables Under the Influence of Harmonics in Hot Countries


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DOI: https://doi.org/10.15866/irecon.v12i1.24374

Abstract


There are many factors affecting the underground power cables. These factors are the depth of burial for the cable and the ambient temperature around the cable, i.e. soil thermal resistivity around the cable, number of parallel circuits of cable, such as flat or trefoil formation, cables buried directly (in the soil or inside conduit), and dry zone around the cable. One significant factor that is usually ignored is the harmonic factor. In this work, the effects of distorted load current and voltage on the thermal behavior of underground power cables are presented. Analyzing the expected cable life is suggested. IEC and IEEE standards are taken as references. FEM is used to calculate cable temperature.
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Keywords


Harmonics Factor; Ampacity; Thermal Behavior; Underground Power Cable; Distorted Loads

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References


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