Impact Patterns of Transmission Line Icing in Microterrain and Micrometeorological Environments

Abstract

The icing of transmission lines poses significant challenges to the stability of the power system, leading to increased loads, imbalanced tensions, and galloping. This paper specifically investigates the icing formation on braided wire cylinders. A three-dimensional braided conductor icing finite-element model is developed based on the icing theory model. Wind field simulations are conducted over mountainous terrains, and wind field acceleration ratio contour maps are analyzed. In order to investigate the effects of different factors on the icing morphology of conductors, the paper finally simulates and computes the icing of conductors under microterrain and micrometeorological conditions under varying ambient temperatures, wind speeds, median volume diameters, and liquid water content in the air. The findings demonstrate that the amount of conductor icing has a negative association with temperature and a positive correlation with wind speed, median volume diameter, and air liquid water content. Temperature and median volume diameter have less of an effect on the icing morphology than wind speed and the amount of liquid water in the air.