Implementação de um relé virtual de proteção diferencial de transformadores: Avaliação de cenários de curtos-circuitos, inrush e saturação de TCs

The transformer is one of the main pieces equipment in electrical system, being vital importance for delivery energy to consumer centers. Therefore, care must be taken, and these equipment’s carefully protected. One way protect it against internal faults apply differential protection function. response this function analyzed short circuit conditions, which designed, conditions that can cause act improperly, such as external circuits, current saturation energization. Thus, work implementation a virtual relay evaluate presented. For this, Matlab software used elaborate all processing steps make up numerical relay. results are presented confronted with state art related theme.