Determinação da tensão de restabelecimento transitória em disjuntores de alta tensão no dominio da frequência

Abstract

Transient restoration voltage (TRV) analysis has become increasingly important due to the increase o electrical power systems (EPS) size. These studies are necessary for greater reliability of the systems, as it helps in the sizing of EPS equipment in order to prevent future failures. Therefore, this work sought to determine the transiente recovery voltage using simulations in the frequency domain. To facilitate the analysis of TRV data, simulation techniques were used, with ATPdraw, HarmZs and Matlab software. Results were presented for the studies of some cases in which simulations of single-phase and three-phase short circuits occurred and finally applying known concepts. It is observed, in the cases studied, that the desired results were not obtained, that is, a representation of the TRV wave. Thus, it is concluded that a complex system requires a more in-depth and detailed study so that the results found are the desired ones.