Abstract：Conductor icing of overhead transmission line is one of the most serious natural disasters in power systems. Studying the numerical simulation method of conductor icing and establishing a simulation platform can not only predict the growth of conductor icing scientifically, but also greatly reduce the work of field observation. However, the existing mathematical models and simulation calculation methods all ignore the torsion of conductor in icing process, so the actual ice accretion process cannot be simulated accurately and effectively. In this paper, based on the formation mechanism of conductor icing, the twisting factor is taken into account, and then the mathematical model of conductor torsion is proposed. Meanwhile, the simulation program is written by C language to realize the numerical simulation process of dynamic conductor icing growth. The simulation results show that the conductor icing growth is a dynamic process with torsion. At the same time, the distance from the tower, the span, the wind speed, and the diameter of the liquid droplets all have great influence on the torsion angle. The numerical simulation method proposed is verified at the Xuefeng-mountain Natural Icing Test Base of Chongqing University.
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2020, Vol. 35 
