Study on Prediction Modeling of Freezing Rain Coating Thickness on Overhead Contact System of Electrified Railway

Based on the analysis of contact wire icing mechanism and the power supply principle of electrical railway, the nature glaze icing accretion model of electrical railway contact wire is given by using icing prediction model of overhead line for reference. And the equivalent ice-melting thickness of traction current is built on the basis of heat balance equation of ice melting. Then the glaze icing thickness prediction model is obtained. The effects of meteorological factors, traction current and its duration are considered in the glaze icing prediction model, which can accurately predict glaze icing thickness of electrical contact wire.