The Biased Cable Detection Based on Probability Density Distribution of the Surface Temperature

Abstract

In this paper, a 3-D electromagnetic-thermal coupling analysis model of cable was established. Through the simulation, surface temperature of the cable has been gotten. Using the principle of statistics, this paper analyzes the temperature of the cable surface and draws the probability density curve. Under two different circumstances (normal and eccentric), the probability density curve present one peak and two peaks respectively. Further study indicates that there is a certain relation between the parameter of the probability density curve and the eccentric degree. Finally, this paper sets up an experimental platform to measure the surface temperature of the cable. The experimental result agrees with the simulation results, which verifies the accuracy of the model.