Desenvolvimento de um programa livre com código aberto para construção de coordenogramas para relés de proteção.

Abstract

The protection of the power electrical system is extremely important for maintaining the supply of electricity to consumers and for the safety of the equipment that make up the electrical system. Over the years this area has developed and is developing with the emergence of new technologies and new studies that enable the digital protection of the system. This work presents an open source computational tool for the elaboration of overcurrent coordinograms called Overcurrent Protection - Coordinogram (OCP - COORD). The purpose of this computational tool is the analysis of coordination and selectivity, an area of fundamental study for application in the protection sector. The developed softwares have a characteristic of having their resources paid, making the works and studies in the area of system protection and selectivity difficult. The PSC - COORD with the purpose of being an open source computational tool comes as a way to encourage studies and analysis of the coordination and selectivity in a free way, contributing to the academic sector. In this work will be found a vision about the electrical protection system, a determining factor for the development of the work, as well as the PSC - COORD is presented as a tool developed through the C++ computer language. At the end of the work, a case study is presented for the protection of a 3-bar distribution network, developed with an academic perspective, in which the studies and calculations aiming protection and selectivity are presented. The data of the protected system are inserted in PSC - COORD for the elaboration of the resulting coordenogram in the case study. Finally, from the elaboration of the software and the case study, it is expected that the work developed will contribute to the Electrical Engineering graduation students, in the Electric System Protection subjects, making available in their teaching this computational tool as a way to contribute to their knowledge.