Identificação das correntes de inrush em transformadores de potência através do gradiente da corrente

Abstract

Assuming that every electrical power system must meet their demand efficiently and safely, that is, all equipment must be in full harmony with the protection devices to provide coordination for the system. Due to increasingly size and demands, research into new methodologies is incentivized, with the goal of applications in equipment that increases safety for the system, since they are used to protect the system itself as well as its equipment, which are often costly. Thus, this work aims to propose a method for differentiation of inrush and short circuit currents in transformers. The theoretical basis needed to understand the topic will also be presented, as well as the software and visual aids used. Finally, the simulations results will be shown, showing the effectiveness of the method. The method is effective and generated the expected results. Keywords: electrical power system, gradient vector, inrush current, Protection relays.