Structure Reliability Analysis of Disaster Protection of Catenary for Railway Traction Power Supply System

In this paper, simulations of railway catenary supporting system have been performed with finite element method (FEM) in different wind and ice-coating disasters with or without a locomotive passing by. The results of stress and displacement indicate that existing catenary supporting structure is capable of meeting the requirement on strength and stiffness in most cases, though, the contact wire will have an excessive deflection if the wind velocity is at 37m/s and higher or the thickness of ice-coating exceeds 20mm. Measures shall be taken in such cases and the junction between inclined cantilever tube on supporting brace and strut shall also be reinforced. Achievements of this paper will be theoretical reference for disaster prevention design and operation of traction power supply system in relative engineering area.