Análise de sensibilidade de fatores que influenciam o desempenho de métodos de localização de faltas em linhas de transmissão.

Abstract

The fault location procedure consists in estimate the location of the disturbance by treating the voltage and/or current signals monitored at the transmission line terminals. According to the processing performed, the means of locating the fault may be classified as fundamental frequency or traveling wave based techniques, making some applications preferable to others due to the ability of being immune to certain factors present in the electric power system as the dynamic behavior of the coupling capacitor voltage transformers, the characteristics of the short-circuits and the sampling rate. In this way, the analysis proposed here looks for the factors that influence the performance of fault location methods, two of them based on fundamental components and one based on traveling wave theory. Therefore, a comparison is made between the performance of the evaluated methods, highlighting the main factors capable of influencing a fault location process in a precise way.