Simulation and analysis of circumferential temperature distribution for overhead conductor

Conductor temperature is an important factor that influences the transmission capacity. It is usually assumed that the conductor is an isothermal cylinder in most studies, which is not consistent with the real situation. Due to the difference of air velocity around the conductor, there is a circumferential temperature difference of the conductor. Therefore, a simulation model for temperature was established based on fluid dynamics theory. The circumferential velocity field and temperature field were simulated. Finally, the influence of wind velocity, environmental temperature and current on the circumferential temperature difference was analyzed. The results show that with the increase of wind velocity and environmental temperature, the circumferential temperature difference decreases gradually, while with the increase of current, the circumferential temperature difference of conductor increases continuously.