Sag-temperature characteristic analysis of stranded carbon fiber composite conductor based on finite element method

Abstract

As a new type of augmented capacity conductor, the current standards on sag-temperature characteristic is not applicable to the carbon fiber composite conductor. This paper proposed a method for analyzing the sag-temperature characteristics of stranded carbon fiber composite conductor based on finite element method. A 3D finite element model of the conductor system has been established. Considering the inflection point temperature, the method of calculating the conductor sag at different temperatures was given, and experiments were carried out to verify the results. Finally, the sag-temperature characteristics under different span and conductor type have been analyzed. The simulation results show that the inflection point temperature and the range of sag with temperature increases with the increase of the span. The cross-sectional area of the conductor has an effect on the variation range of the sag, but has no effect on the variation rate of the sag with temperature and the inflection point temperature.The research results of this paper has practical engineering significance for the dynamic capacity increase and design of the stranded carbon fiber composite conductor.