Aprimoramento de aplicativo para auxílio à configuração de relés de proteção: adição de linhas paralelas e reatores shunt

Abstract

This project had the objective to add simulation resources to the existing computer program for configuration support of the directional overcurrent protection function. The developed tool aims to assist in the configuration of digital protection relays. The new features were developed using the same theory as the base program, with twoport networks. The appliance was created using Python programming language, but the original program structure was changed to use classes to facilitate the expansion and future development of the application. The resources allowed the user to simulate circuits with parallel lines and apply single-phase, two-phase, and threephase faults in one of the lines. The possibility of inserting shunt reactors in the simulations was also added. In addition to carrying out several types of faults, there is a presentation of the results according to the short circuit type. The authors benchmark the developed application results against the PS Simul, a program already established in the electrical and academic environments. Lastly, all the simulations performed were successful compared to the software already consolidated, showing an efficiency of the calculations and the solution of the circuits by two-port networks. Just one problem was find, the calculated angle in cases of thre-phase fault, which will be studied in future works.