Estudo de coordenação e seletividade das proteções

Abstract

This course conclusion work is based on a technical report referring to a real substation, developed during the internship period, in which there was a demand to determine the settings of the protection devices (relays), located in several panels placed since the common coupling point (CCP) between the company and the energy utility. To ensure that the safety devices operate as efficiently as possible, the study was carried out using the software package called PSP-UFU (Power Systems Platform ± ªUniversidade Federal de Uberlândia”). It includes a set of programs developed at Federal University of Uberlândia designed to carry out load flow, short circuit and transient stability analyses. This work presents studies related to short circuits, overload currents, equipment supportability and the coordination and selectivity of protection equipment. In this context, a single-line diagram with the busbars present in the company’s electrical system is shown, from which all the parameters required to meet the objectives of this work are calculated.