Form Finding and Ice-Shedding Analysis of Transmission Lines

Ensuring the safe operation of transmission line engineering is an important means to achieve efficient energy transportation. However, with the frequent occurrence of extreme weather, transmission line operation faults caused by icing and ice-shedding often occur. In order to obtain the initial weightless configuration of the transmission line quickly and accurately, and realize the nonlinear simulation of the dynamic response of ice-covered conductor ice-shedding, the catenary theory is used to obtain the configuration of the conductor under gravity. The elastic deformation of the conductor under gravity is calculated based on the theory of linear elasticity, and then the original length of the conductor without gravity is obtained. Based on the original length, the corresponding finite element model is established, and the dynamic response of the ice-covered conductor under ice-shedding load is calculated by the implicit dynamic method. Combined with the example verification, the ice-shedding amplitude is in good agreement with the experimental results, which verifies the accuracy and practicability of this form-finding method and the simulation method of ice-covered and ice-shedding.