A significant majority of overhead transmission lines' (OHLs) outages is due to backflashovers caused by direct lightning strikes: the realistic assessment of the lightning performance is thus an important task. The paper presents the analysis of the lightning performance of an existing 150kVItalian OHL, namely, its backflashover rate (BFOR), carried out by means of anATP-EMTP-based Monte Carlo procedure. Among other features, the procedure makes use of a simplified pi-circuit for line towers' grounding system, allowing a very accurate reproduction of transient behaviours at a very low computational cost. Tower grounding design modifications, aimed at improving the OHL lightning performance, are also proposed and discussed.

Lightning performance evaluation of Italian 150 kV sub-transmission lines / Gatta, F. M.; Geri, A.; Lauria, S.; Maccioni, M.; Palone, F.. - In: ENERGIES. - ISSN 1996-1073. - 13:9(2020), pp. 1-22. [10.3390/en13092142]

Lightning performance evaluation of Italian 150 kV sub-transmission lines

Gatta F. M.;Geri A.;Lauria S.;Maccioni M.
;
2020

Abstract

A significant majority of overhead transmission lines' (OHLs) outages is due to backflashovers caused by direct lightning strikes: the realistic assessment of the lightning performance is thus an important task. The paper presents the analysis of the lightning performance of an existing 150kVItalian OHL, namely, its backflashover rate (BFOR), carried out by means of anATP-EMTP-based Monte Carlo procedure. Among other features, the procedure makes use of a simplified pi-circuit for line towers' grounding system, allowing a very accurate reproduction of transient behaviours at a very low computational cost. Tower grounding design modifications, aimed at improving the OHL lightning performance, are also proposed and discussed.
2020
backflashover rate; grounding system; lightning performance; Monte Carlo; sub-transmission lines
01 Pubblicazione su rivista::01a Articolo in rivista
Lightning performance evaluation of Italian 150 kV sub-transmission lines / Gatta, F. M.; Geri, A.; Lauria, S.; Maccioni, M.; Palone, F.. - In: ENERGIES. - ISSN 1996-1073. - 13:9(2020), pp. 1-22. [10.3390/en13092142]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1443217
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