Research on the Constitutive Model for Load Point Displacement in Large Span Towers Due to Long-Span Conductor Galloping

Abstract

This paper establishes an intrinsic function model for the displacement of the mounting point under the wind load of the conductor. This paper mainly takes the K1 cross-tower transmission line of 500kV transmission and substation project as the research object. Finite element analysis is used to establish the model and modal analysis is performed on the large-span tower-line coupling model to obtain the vibration modal data. Then, the average wind load is converted to the equivalent static load acting on the tower-line coupled system, and the transmission tower and conductor are mechanically analyzed. The loads at the tower suspension points are determined and a constitutive model of the displacements at these points is constructed. Error analyses of the model and simulated data provide a new perspective on the subsequent study of conductor dancing in transmission lines.