Analysis and Calculation of High-Frequency De-icing in Electric Railway Catenary

The ice-covered of the electric railway catenary is one of the significant factors affecting railway operations. Aiming at the problems of low efficiency of traditional de-icing methods, this paper proposes to use the de-icing method based on high-frequency current. By enhancing the current frequency to enhance the conductor skin effect, increase the resistance value per unit length of the conductor, and effectively increase the heating power under the same energizing current. According to the physical process of high-frequency de-icing of ice-covered conductors in electric railway catenary, the calculation method of high-frequency de-icing critical current is deduced, and the effects of the thickness of the ice-covered, ambient temperature and external wind speed on the critical current of high-frequency de-icing are analyzed.