Analysis Of ANSYS Transmission Line Tower Icing On Mechanical Characteristics

In the process of supplying electric power, the lines often suffer various complex climate and geographical environment, which will cause the failures of transmission line components and immeasurable losses. Severe cases will result in secondary disasters such as fire, which will lead to serious social reflection and disturbances for people’s normal life and order. Many researchers in institutes and universities take a lot of energy and time to study in-depth for the occurrence and prevention of icing accident of transmission line.This paper describes the research status in the structure design and theoretical analysis of transmission tower. According to the characteristics of the transmission tower construction, the deformation and damage of transmission tower impacted by environmental loads(ice, wind) were simulated and the cause of tower structural failure fault were analyzed. Using the nonlinear finite element method to analyze the transmission tower structure, a scheme for the finite element modeling program of surface displacement were determined. After its rationality being verified, the distribution of internal forces and deformation of the transmission tower structure that may arise will be probed. The height design of the maximum stress distribution curve under wind loads were also analyzed, and a conclusion were presented that transmission line weight can be ignored, but the results of the stress distribution will affect the design of maximum wind load. On the basis of this analysis, the force analysis of the transmission tower was completed.The finite element model of the cat head type linear transmission tower and the tower-line system were calculated in this paper. As the tower, ground wire, insulator strings of transmission line mainly are impacted by external loads such as icing load,wind load, seismic load etc, the environment with the ice thickness in the range of0mm-60 mm, wind speed ranging from 0m/s-30m/s and the seismic load by releasing transmission tower legs freedom were simulated in this paper. The results show that:with the ice thickness increasing, the comprehensive stress subjected by the towers and lines system model gradually became larger, and the effect of wind loads was such too, which proves that the increasing applied load was the main reason for the collapse of transmission line towers.In this paper, the static stress analysis and dynamic response of a tower were analyzed by using ANSYS finite element analysis software; the influence on the dynamic response results of the tower under icing load, wind load, seismic loads and other effects were analyzed; which has been prepared for the stability and dynamic response analysis of transmission tower.