Evaluating the Impact of Conductor Vibrations on Overhead Line Structures 12+

🔖 Master's Thesis from the year 2015 in the subject Engineering - Power Engineering, grade: Merit, University of Manchester, course: Electrical Power Systems Engineering, language: English, abstract: This dissertation introduces wind-induced vibrations that influence the performance of overhead line structures. The main focus in this study is on Aeolian vibrations and the quantities related to the calculations of its performance such as safe design tension and fatigue limits. However, there are three main methods that are proposed to evaluate conductors with respect to vibrations which are Safe Design Tension Method, Fatigue Endurance Limits Method, and Energy Balance Method. The safe design tension method is applied on Aluminium Composite Steel Reinforced (ACSR) and All Aluminium Alloy Composite (AAAC). Eventually, a relationship is established between tension of conductor and span length. The fatigue endurance limits method uses bending strain and stress to evaluate the fatigue level on the conductor. The effect of vibration dampers to overcome vibration problems on overhead line conductors is also considered. Moreover, an assessment tool based on Microsoft EXCEL is developed which allows the evaluation of overhead line system conductors based on environmental conditions, mechanical properties, and system specifications. The assessment tool evaluates the overhead line system with respect to bending amplitude or alternatively using the antinode amplitude. The analysis of f...