A DYNAMIC ANALYSIS OF OVERHEAD POWER LINES AFTER ICE-SHEDDING USING FINITE ELEMENT METHOD

Justín Murín – Juraj Hrabovský – Roman Gogola – František Janíček

   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.

Keywords: overhead power lines, ice-shedding, finite element method, transient analysis

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