Análisis de Ferroresonancia en Transformadores de Tensión Inductivos para Uso Metrológico

E. J. Toledo, UNaM University, M. O. Oliveira, IEEE Member, O. E. Perrone, UNaM University, J. H. Reversat, UNaM University, R. S. Orellana Paucar, Osinergmin

Abstract

Ferroresonance is a phenomenon usually initiated by transients in power networks resulting from e.g. switching operations or ground faults. Non linear behavior of the core of an inductive voltage Transformer results in magnetic saturation. In this context, this paper presents the numerical simulation developed with ATP/EMTP software on the ferroresonance phenomenon in inductive voltage transformer to metrological use. The analyzed results arise from the interaction between the applied voltage transformer and the shunt capacitance of the switch. The results show the influence of these variables on the phenomenon of ferroresonance.

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Principales Características de la Corriente Inrush en Transformadores

M. O. Oliveira, IEEE Member, A. S. Bretas, IEEE Senior Member, O. E. Perrone, UNaM University J. H. Reversat, UNaM University, H. E. Muñoz, UNaM Univeristy, R. S. Orellana Paucar, Osinergmin

Abstract  Constant switching occur in transformers due to imbalances between power generation and load served. This fact generates a magnetizing transient current on the transformer called “inrush current” resulting in numerous problems. Thus, this paper addresses the basictheoretical study of inrush currents and shows its influence in the transformer protection systems. Moreover, it also presented a list of major works that address this transient phenomenon.

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