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Determination of current and temperature distribution in overhead conductors by using electromagnetic-field analysis tools

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3 Author(s)
Zunec, M. ; Fac. of Electr. Eng., Univ. of Maribor, Slovenia ; Ticar, I. ; Jakl, F.

This paper discusses the issue of skin-effect impact on a current's distribution. It presents an analytical approach for determining temperature distribution by using the Electromagnetic Field Analysis Tool's two-dimensional (2-D) program (ELEFANT 2D) over the cross sections of tube-type conductors. Using this implemented model, the authors determine the conductor's current density by taking into account the skin-effect impact on a multilayered bare conductor by the overhead power transmission lines of the ACSR 490/65 mm2 type, and the optical cable of the optical ground wire (OPGW) type. An ELEFANT 2D is given an enabling determination of temperature distribution over the tube-type conductor cross section. The authors have developed, using this program, a computerized mathematical model for temperature determination by considering the skin effect in a multilayer ACSR 490/65 mm2 conductor, and the optical cable of the OPGW type. The results show temperature distribution in individual layers of the ACSR 490/65 mm2 conductor and the OPGW cable by adiabatic heating at different short-circuit currents.

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Power Delivery, IEEE Transactions on  (Volume:21 ,  Issue: 3 )