Métodos de estimação fasorial aplicados à proteção de sistemas elétricos.

Abstract

In this work, it is performed a qualitative analysis of different phasor estimation algorithms applied to Power System Protection. The proper operation of relays (the most important element of a protection system) is directly linked to the quality of the information they receive from the Instrument Transformers. Therefore, it is essential that voltage and current go through a process of filtering the fundamental components. In order to carry out the comparison among the six phasor estimation techniques under study, it is performed an analysis of the application of each one of the methods in real situations in the Electric Power Systems. From the results obtained from the simulations, it is possible to identify which methods obtained the best performances.