Dynamic Analysis of Overhead Power Lines after Ice–Shedding Using Finite Element Method

Abstract

In this paper, the analysis of ice-shedding from ACSR conductors to its swing up height and vibration using Finite Element Method (FEM) is presented. For the numerical simulations the effective material properties of the ACSR conductor are calculated using the homogenisation method. Numerical analysis concerning vibration of one and triple-bundle conductors with icing for a whole range or on their certain parts are performed. The impact of ice-shedding to the mechanical tension in the conductors at the points of attachment is investigated and evaluated. Identification of the impact of ice-shedding from the ACSR conductors on its mechanical state may contribute to increasing the safety and quality of an electrical transmission system.

Study on the Bouncing Process Induced by Ice Shedding on Overhead Conductors under Strong Wind Conditions

“…The numerical simulation results were compared with the experimental values, and it was found that the deformation of the conductor depended on the excitation frequency, the quality of the conductor, and the excitation conditions. Justín Murín et al used ANSYS software (https://www.bentley.com/ software/adina/, 12 May 2024) to build finite element models of a single conductor and a three-split conductor, simulated ice shedding at different locations, and investigated the similarities and differences between a single conductor and a three-split conductor in their dynamic responses to ice shedding with respect to the height of ice shedding jumps and the tension change [13]. Yan B et al used ABAQUS software (https://www.ansys.com/, 12 May 2024) to investigate a seven span continuous transmission line numerical model, and analyzed the dynamic responses of multiple-span transmission lines with different structural parameters after different rates of ice shedding, and proposed a quantitative relationship and linear calculation formula between the sag difference and the maximum ice bouncing height according to the simulation results [14].…”