Estudo do comportamento de transformadores de corrente em regime transitório, incluindo o efeito da histerese no núcleo magnético.

Abstract

In this work is presented the study of saturation in TC'S under transient regime conditions given a power system, analyzing its behavior with and without the presence of hysteresis and reclosing and its influence on the variations of the incidence angle of the defect, the inductive component of the load, the load impedance module and the residual flow, the theoretical basis is based on familiarization about the characteristics of the current transformers, either structural or electrical and their conformity according to NBR 6856, as well as the presentation of the necessary equation for the definition of the variables involved in the object of study as in the development of the model of Juhani Tellinen, concluding that some of these cases should be anticipated and avoided during TC sizing and system design.