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Información tecnológica

versão On-line ISSN 0718-0764

Resumo

KANASHIRO, A.G; PIANTINI, A  e  BURANI, G.F. Model of a Three-Phase Transformer for Studies of Voltage Surges (Peaks) due to Lighting Discharges. Inf. tecnol. [online]. 2004, vol.15, n.1, pp.67-73. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642004000100011.

This paper presents a methodology for modeling three-phase distribution transformers for the analysis of the voltage surges transferred to the secondary networks when direct or indirect lightning discharges occur. The validation of the model was reached through comparisons between computer simulations and results of tests performed in the laboratory. The results showed that the voltages transferred presented by the model and by the transformer are quite similar when the voltage impulses with both standard (1.2/50m s) and typical waveforms of induced voltages are considered. The model is simple and represents the transformer reasonably well, permitting the analysis of the voltages transferred in the secondary networks.

Palavras-chave : distribution transformer; transferred voltages; lightning surges; transformer modeling.

        · resumo em Espanhol     · texto em Espanhol

 

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