This paper analyzes the overvoltages associated with direct strokes to a hybrid overhead line (138 kV and 13.8 kV circuits sharing the same structures). The voltages are calculated using the EMTP-RV, and their dependence on parameters such as the stroke current front time, soil resistivity, and impedance of the grounding system is discussed. Emphasis is given to the voltages on the medium-voltage circuit. A 1:20 scale model of a hybrid line has been implemented, and a good agreement has been found between measured and calculated voltages.

Moraes, L.B., Piantini, A., Shigihara, M., Borghetti, A., Napolitano, F., Nucci, C., et al. (2022). Analysis of Lightning Overvoltages on Overhead Hybrid Lines [10.1109/ICLP56858.2022.9942662].

Analysis of Lightning Overvoltages on Overhead Hybrid Lines

Borghetti, A.;Napolitano, F.;Nucci, C. A.;Tossani, F.
2022

Abstract

This paper analyzes the overvoltages associated with direct strokes to a hybrid overhead line (138 kV and 13.8 kV circuits sharing the same structures). The voltages are calculated using the EMTP-RV, and their dependence on parameters such as the stroke current front time, soil resistivity, and impedance of the grounding system is discussed. Emphasis is given to the voltages on the medium-voltage circuit. A 1:20 scale model of a hybrid line has been implemented, and a good agreement has been found between measured and calculated voltages.
2022
Proc. 36th International Conference on Lightning Protection
529
534
Moraes, L.B., Piantini, A., Shigihara, M., Borghetti, A., Napolitano, F., Nucci, C., et al. (2022). Analysis of Lightning Overvoltages on Overhead Hybrid Lines [10.1109/ICLP56858.2022.9942662].
Moraes, L. B.; Piantini, A.; Shigihara, M.; Borghetti, A.; Napolitano, F.; Nucci, C.A.; Tossani, F.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/916679
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