Research on Stress Delamination Characteristics of Aluminum Conductor Steel Reinforced Considering Radial Temperature Difference

Abstract

In order to deeply analyze the stress state of overhead transmission lines during operation, the finite element simulation software is used to study the stress variation of each layer of strands under the coupling action of tension and temperature, and the influence of radial temperature difference on stress is mainly studied. With the increase of temperature, part of the tension of the wire is transferred to the steel core, the stress of the steel core gradually increases, and the stress of the aluminum wire gradually decreases. The stress of steel core decreases with the increase of radial temperature difference, while the stress of aluminum wire increases with the increase of radial temperature difference. Both the overall wire temperature and the radial temperature difference have a greater impact on the stress of the steel core, which reminds researchers to pay more attention to the stress state of the steel core in engineering practice, and provides a reference for maintaining the safe operation of the transmission line.