Electrodynamics Simulation of Overhead Power Lines

Electrical overhead power lines are important installations today. They are the main part of electric transmission and distribution systems that are vital to developed societies. A key factor for proper operation is correct clearance between conducting parts and earthed parts. These separations can be altered by the movement in the conductors caused by various phenomena and this can lead to faults and subsequent supply outages. Furthermore, these situations can increase mechanical stress on conductors and cause breakages or structural faults in supports. In this paper, a multiphysic model is presented which includes three types of phenomena together: 1) electromagnetic; 2) thermal; and 3) mechanical. This model is used to study conductor movement and mechanical stress and takes the different types of stationary and transitory disturbances into consideration.