Estudo do sistema de proteção de uma subestação.

Abstract

The electrical substations have a very important role in the power transmission and supply. Therefore, it’s necessary that each one of them works perfectly, to ensure efficiency and quality in the energy distribution. Protection system will ensure that an electrical substation works as expected; therefore, over the past years, electrical substations are increasingly automated, offering more operational and maintenance resources for the electrical systems. The student, through this final paper has, initially, the intention to describe the advantages of replacing electromechanical relays to microprocessor relays is bringing to electrical substations, ensuring better trust and safety; later, it’s shown how these relays act over the equipments and how to make its interconnections to the project.