Heating and cooling of insulated wires of overhead power lines with variations in wind direction

Abstract

Subject of research: heating and cooling of insulated wires of overhead lines of electric power systems.
 The purpose of the study: experimental determination of heating and cooling curves of insulated wires of overhead lines with changes in wind speed and its direction relative to the axis of the wire.
 Object of research: insulated wires of overhead lines.
 The main results of the study: an overview of an experimental stand developed for the study of non-stationary thermal modes of overhead power lines wires that occur when weather conditions and flowing currents change. The results of a study of heating and cooling of an insulated wire of overhead lines with a cross section of 16 mm2 with a change in the direction of the laminar airflow relative to the axis of the wire, provided that the current flowing through the sample is constant, are presented. The measurements were carried out using devices that record the current strength, temperature and voltage. Heating and cooling curves would be constructed based on the results. The angles of the wind direction relative to the wire were altered, at which the temperature difference is the smallest.