The Effect of Formation a Galloping Motion on the Electric Transmission Cables in the High Voltage Tower

Abstract

This research includes a theoretical analysis according to nonlinear Klein- Gordon equation to study the dynamic state of a specimen of an electric translation line in Iraq while it is in a galloping motion that results from: different wind velocity, material type, different tension force as well as the span between towers. This is in addition to knowing the behavior of the specimen under the effect of both the force that results from wind velocity and the altitudes formulated in the string due to the galloping motion. Reducing the effect of the galloping motion and compare it with the numerical method of a model with multi-degree of freedom by using the ANSYS workbench-12.1 is also taken care of in this work.The theoretical findings of the research have shown that they are very near to those of the numerical method; they have also shown that the material type and the length of the string are very important in determining the altitude of the galloping motion.

Keywords

• galloping motion
• string
• ANSYS Workbench-v12.1
• FEA
• wave equation
• translation line