CÁLCULO DE CORRENTE DE CURTO-CIRCUITO

Abstract

A Electric Power System - SEP is a complex mesh consists of a Generation Network, Processing, Transmission and Distribution of Electric Energy and aims to engage the operation, control, maintenance, management and other operational processes and related uses this energy produced by sector, through different processing procedures, transmitted at high voltage and distributed under the most diverse operational forms. With size and characteristics indicating that it unique worldwide, the system of production and transmission of electricity in Brazil is a large hydrothermal system, with a strong predominance of hydroelectric plants and multiple owners who require high standard of technical competence , synergy between the teams and the definition of guidelines and strategies. Given these facts, the electric power system is susceptible to electrical failures caused by many reasons, these failures commonly called "short circuit" or "faults" that occurs most often in transmission lines due to their exposure and extension. The objective of this work is to develop an algorithm using a computational tool via Matlab software able to assist academic and engineering professionals in short circuit current calculations demonstrating their efficiency for analysis and possible failures solutions. Therefore this work is based on the methodological literature of the electric power system, detailing on transmission lines and short circuit as well as the development of an algorithm. Among the possible causes of failures in the electric power system there are the failures due to natural phenomena such as, for example, from lightning. Once all the necessary information, the work was completed with the development of an algorithm to perform calculations quickly and effectively short-circuit current using the method of symmetrical components in three-phase systems in transmission lines after the entry of network parameters to be analyzed.