Design and implementation of a multifunction DSP-based-numerical relay

摘要

This paper is aimed at proposing a multifunction numerical relay (MNR) for protection against over current, over-and under-voltage and over-and under-frequency. The MNR serves also as a directional relay. The performance of the MNR is investigated through simulation using MATLAB/Simulink and implementation of a prototype using TMS320F28335 Experimenter Kit. The MNR trips a circuit breaker at abnormal conditions of current, voltage and frequency. The novelty of the proposed relay lies on being a numerical compact-sized relay serving multi protection functions. (C) 2016 Elsevier B.V. All rights reserved.