Desenvolvimento de um software proprietário de uso acadêmico para cálculo de curto-circuito simétrico e assimétrico em sistemas elétricos de potência

Abstract

The present work presents a computational application development for short circuit calculation in the Electric Power System – EPS. This computational program, called SHOT-C, calculates and displays the admittance matrices and bus impedances of a small number bus systems, in radial and ring topology. In addition, this application provides the sequence currents as well as the phase currents, for the four most common types of short circuits: single-phase-to-ground, two-phase, two-phase-to-ground and three-phase. The computational application is a software built with the C language and the IUP graphical library user interfaces. The software design was developed for academic purpose, but can also be used by professors and protection engineers to study and deepening of projects, reason why the entries are real values, later converted into values per unit (p.u.). Several computer simulations were performed using the SHOT-C software. The obtained results were compared with the results of bibliographic references, obtaining an equivalence between them with an error margin smaller than 1%.