Wind-induced Dynamic Response For Transmission Line Tower Coupling System

The effects of transmission line tower system are electric power transmission and distribution, and ensure the safety of the tower line system operation has very important significance. Tower line system of the large span, high structure, the overall structure of flexible, the structural system is sensitive to wind load. And, under the wind load wires produce dynamic tension with tower "coupling" phenomenon. Therefore, research on transmission tower line coupling system of wind effect has important practical significance.This article is established in the ANSYS environment "three tower two line" tower line coupling system model, come up with the method of wire simulation to find form. Comparing the related data of conductor calculated by this method with the standard for the calculation results, verify the simulation to find form is correct and simple; Then modal analysis was carried out on the tower and tower-line coupled system, and work out each vibration frequency and modal characteristics. In the process of vibration, the influence of the wire is not to be ignored.In this paper, using the Davenport power spectrum and the WAWS, it analyzes the Time-History Analysis, and it is concluded that the high pulsating wind speed time history curve. On this basis, it simulate the tower and tower-line coupled system of displacement and acceleration on different wind Angle and wind attack angles, comparing the data between the tower and tower-line coupled system, so it further proves the necessity of the "decoupling". Next, It is concluded that the most unfavorable wind direction Angle and wind attack angle, and the most adverse wind conditions is one of the factors that in the process of the design of transmission line tower system need to consider. So, this paper provides certain theory basis for transmission tower under the wind engineering research.