Modelagem de um relé de distância em um simulador digital em tempo real.

Abstract

This work presents the modeling process of a distance relay in a real-time digital simulator. The model contains: i) the main features of a digital relay architecture, including anti-aliasing filter and phasor estimation; ii) mho and quadrilateral operating characteristics, with two protection zones; iii) fault diagnosis, which informs the main features of the disturbance. For the fault diagnosis, detection, classification and location methods were evaluated using batch mode simulation of different fault scenarios in a transmission line. From the obtained results, the best methods were selected to be part of the modeled relay. At the end, the operation and diagnosis of the modeled relay were compared with the results presented by the distance relay model provided by the simulator manufacturer and by a digital relay.