New Method for Calculating the Heating of the Conductor

Žiga Voršič, Robert Maruša and Jože Pihler
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Žiga Voršič: SODO d.o.o., Minařikova ulica 5, SI-2000 Maribor, Slovenia
Robert Maruša: ELES d.o.o., Hajdrihova 2, SI-1000 Ljubljana, Slovenia
Jože Pihler: Faculty of Electrical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia

Energies, 2019, vol. 12, issue 14, 1-14

Abstract: The paper describes the core heating of ACSR (aluminum conductor steel—reinforced) conductor in stable operation under different environmental conditions. The calculations are greatly simplified in a steady state—we can calculate on a balance of power instead of a balance of energies. At a known surface, the temperature of the conductor due to solar radiation, natural convection, and joules heating as well as the temperature of the steel core were calculated, which is relevant for the tensile strength of the rope. Measurements of the surface of the conductor and the core rejected a simple model of heat transfer—it is also necessary to take into account empty air spaces between the wires of a rope. On the basis of measurements, a new model has given satisfactory compliance with the measured values.

Keywords: conductor; ACSR rope; mathematical model; temperature; temperature gradient; calculation; measurements (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
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