Desenvolvimento de software interativo para coordenação de sistemas de proteção de redes de distribuição

Abstract

This paper presents the development of an open source software for calculating the protection device adjustments of a medium voltage radial distribution network considering selectivity and coordination known as MyGrid.protect.Designed to be the union of a graphical interface that presents the network topology and a library that models the behavior of devices in fault situations, MyGrid.protect was driven by the deficiency of these features in MyGrid (JUREMA, 2019), API for topological representation of radial networks in Node-Depth Encoding (NDP) with power flow and short circuit calculation functions by phase components, implemented by the Intelligent Electrical Networks Group (GREI) of the Department of Electrical Engineering (DEE) of the Federal University of Ceará (UFC). Both software programs are free and developed in Python by the Object Oriented Programming (OOP) paradigm. This makes them attractive to use for academic purposes because they are free to use and implement, also because they guarantee the flexibility and expandability of their libraries, adding functions and devices along with the advancement of new protection technologies. MyGrid.protect allows the analysis of both existing networks and those in the design phase, allowing feasibility studies, expansion and operation of the power system with great time savings, requiring only that the network in question be modeled partially or fully by MyGrid. At the end of the work a case study is presented where the protection of a distribution network is calculated by the coordinated and selective philosophies of MyGrid.protect using the power flow and short circuit data calculated by MyGrid.