A relevância do efeito corona por tempo bom para a escolha do condutor fase ótimo em linhas de transmissão

Abstract

This work was made in order to demonstrate how the Corona effect losses in Fair Weather are relevant to the optimal phase conductor choice and how they should be calculated. To build a transmission line (LT) with an optimized project, the conductor with lesser losses and lower cost must be chosen. In this work, the Itabirito 2 Vespasiano 2 LT, in 500 kV, which will be commissioned in 2013, was used as an example, there all the technical premises for optimal phase conductor definition were used. There are few technical studies that relate optimal phase conductor choice with Corona effect losses in Fair Weather, because most studies state that this choice should be made by Systemic and Joule Losses. In this work were made simulations of several kinds of configurations and conductor cables using the ATP software on the single frequency output model. The results indicate that the Fair Weather Corona Effect are important, mainly in the beginning years of the enterprise, though the systemic losses should not be disregarded.