Desenvolvimento de módulo de proteção de sobrecorrente no Matlab para aplicação acadêmica

Abstract

This work presents the modeling of a digital overcurrent protection relay for distribution lines, intended for academic use. Using MATLAB/Simulink software, an electric power system was modeled, representing a distribution line, an overcurrent protection relay, and a current signal acquisition module. The developed protection module includes a graphical user interface for curve visualization and relay parameter configuration for short-circuit event protection. The relay logic was verified through the application of single-phase, two-phase, two-phase-to-ground, and three-phase faults. The module demonstrated satisfactory results, with flexible parameterization capabilities in the developed protection system, as well as ease of use due to its human-machine interface. This ease of use supports the educational development of the user and contributes to future research in electric power system protection.