Transmission Tower Stress Analysis and Online Monitoring Scheme

Abstract

So far, the theoretical study of the transmission tower line is not enough for the research and analysis of the transmission line under the wire icing and strong wind load. The understanding of the disaster load mechanism, structural analysis method and vibration control is still insufficient, resulting in the accidents of broken towers caused by ice coating, wind load and geological disasters still occur frequently, which is one of the main hazards of safe operation of power grids. First of this paper, the failure mechanism of transmission towers in various environments is studied in depth. Then, the mechanical characteristics of towers under environmental load are analyzed by finite element simulation results. Finally, an online monitoring method which is based on the mechanical characteristics of transmission tower, is proposed to detect the stress state and determine if there is a fault will occur or has occurred. Under these circumstances, the force of transmission towers will be known in real time, and power grid disaster can be prevented in advance.