Estudo dos impactos da inserção de geração distribuída no sistema de proteção da rede elétrica do Campus do Pici utilizando o software ATPDraw.

Abstract

There is a growing need from society for reliable, safe and quality power supply. New solutions and evolutions, such as the insertion of distributed generation in an electrical system, are caused by factors such as environmental impacts, the emergence of new technologies and the increase in energy demand. This work, from simulations using the ATPDraw software, performs an analysis effects and impacts of the insertion of distributed generations in the distribution network of the Campus do Pici. This study is necessary because the distributed generations cause impacts on the electrical system that can cause a malfunction in the protections of this system, for example, in the timed overcurrent protection relays. In this work, the time delayed overcurrent protection relays with instantaneous adjustment, three-phase circuit breaker, voltage source, distribution line, potential transformer, loads, ammeters, distributed generation from a synchronous machine, photovoltaic solar generation and three-phase short circuit were modeled. Through ATPDraw, where the UFC - Campus do Pici electric network was modeled, simulations were performed, without and with the presence of distributed generation, analyzing the effects realized by the insertion of these sources. This work also shows that ATPDraw is a useful tool for the execution of studies in the academic environment, in order to increase the learning of students in areas such as protection of electrical power systems. The simulations made in this work show that the distributed generations change the behavior of the waveform of the currents of each distribution feeder, increase the level of short-circuit of each section and uncoordinate the protections of the same.