A Detailed Field Study of Lightning Stroke Effects on Distribution Lines

Miyazaki, Teru; Okabe, Shigemitsu

doi:10.1109/tpwrd.2008.2002672

Cited by 25 publications

(7 citation statements)

References 7 publications

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“…However, it is difficult to determine whether a direct or indirect stroke caused a distribution line fault, since the damage to facilities, caused by direct strokes, produces similar effects to those from indirect ones (Miyazaki & Okabe, 2009), and this aspect complicates the analysis of causality of the fault.…”

Section: The Lightning and The Electrical Distribution Systemmentioning

confidence: 99%

Proposal for an automatic system correlation between failures on electrical distribution lines and atmospheric lightning discharges

Céspedes¹,

Plata²,

Cadavid³

2015

ing.inv.

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This paper presents a proposal for the development of an automatic system correlation between two variables, one represented by the failures on the electrical distribution lines during a storm process and another one represented by atmospheric discharges (lightning) that happen in this process. Initially, in order to define if the failure is caused directly or indirectly by an electrical impact generated by lightning, a space-time correlation is proposed. With the obtained data a decision matrix is proposed, using an entropy method to assign weights to the failures in order to determine its severity and therefore its priority of attention. On the other hand, taking into account that the time window of observation is perhaps the most relevant parameter in the proposed correlation system, this article shows part of a simulation proposed for its calculation as well as the mathematical bases that were used as a support for it.Keywords: Lightning, correlation, failures in distribution lines, method of entropy, decision making. RESUMENEl presente artículo plantea una propuesta para el desarrollo de un sistema automático de correlación entre dos variables, una representada por las fallas acaecidas en las líneas de distribución eléctrica en un proceso de tormenta y otra representada por las descargas atmosféricas (rayos) presentadas en dicho proceso. Inicialmente, para definir si la falla es causada directa o indirectamente por un impacto eléctrico generado por un rayo, se propone una correlación espacio-temporal. Con los datos obtenidos se propone elaborar una matriz de decisión usando, a su vez, un método de entropía para asignar pesos a las fallas con el fin de determinar su gravedad y por lo tanto su prioridad de atención. Por otro lado, considerando que la ventana de tiempo de observación es quizás el parámetro más relevante en el sistema de correlación propuesto, el artículo muestra parte de una simulación planteada para su cálculo, así como las bases matemáticas utilizadas como soporte de esta simulación.Palabras clave: Descarga atmosférica, correlación, fallas en líneas de distribución, método entrópico, toma de decisiones.

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Section: The Lightning and The Electrical Distribution Systemmentioning

confidence: 99%

Proposal for an automatic system correlation between failures on electrical distribution lines and atmospheric lightning discharges

Céspedes¹,

Plata²,

Cadavid³

2015

ing.inv.

View full text Add to dashboard Cite

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“…Lightning performance of 6.6-kV distribution lines has been the subject of field studies in Japan [162]- [164].…”

Section: A Lightning Protection Of Distribution Linesmentioning

confidence: 99%

Overview of Recent Progress in Lightning Research and Lightning Protection

Rakov

Rachidi

2009

IEEE Trans. Electromagn. Compat.

204

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Abstract-This review paper, prepared for this second special issue on lightning of the IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, summarizes major publications on lightning and lightning protection since the first special issue published in November 1998, i.e., during the last decade. The review is organized in the following five sections: lightning discharge-observations, lightning discharge-modeling, lightning occurrence characteristics/lightning locating systems, lightning electromagnetic pulse and lightning-induced effects, and protection against lightning-induced effects.

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“…Although field observations suggest that many of the lightning-related disturbances occurring in MV-lines are due to lightning striking the ground near the line [1], [5], direct events are possible cause of line faults as well, unless surge arresters (SAs) are regularly installed at close distance [6], [7], [8]. In several studies e.g., [9], EMTP (electromagnetic transient program) calculation models, in which the lightning strike is represented by an equivalent generator, i.e., a current source in parallel with the wave impedance of the lightning channel [4], [10], are shown to be adequately accurate for reproducing overvoltages originated by direct lightning strikes.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Effects of the Electromagnetic Pulse on the Response of Overhead Distribution Lines to Direct Lightning Strikes

Borghetti

Ishimoto

Napolitano

et al. 2021

IEEE Open J. Power Energy

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In the usual practice, the evaluation of overvoltages due to direct lightning strikes to overhead power lines is focused on the representation of the effects of the lightning current injection, whilst the effects of the coupling between the conductors and the lightning electromagnetic pulse (LEMP) is disregarded. Motivated by recent results obtained for the case of a medium voltage line configuration with a shield wire, this paper extends the analysis to assess the contribution of the LEMP on the lightning performance of an overhead distribution line with and without periodically grounded wires and surge arresters. Moreover, the paper deals with the LEMP effect on the occurrence probability of flashovers on different phases, which is an important information on the service continuity of networks with isolated or compensated neutral earthing. A validation of the results is obtained by comparing the overvoltages calculated by the electromagnetic transient program including the model of the line illuminated by the LEMP and those obtained by a three-dimensional finite difference time-domain approach.Index Terms--distribution line, direct lightning, lightning electro-magnetic pulse, flashover rate, lightning protection NOMENCLATURE i(t) current waveform at the channel base I0, τ1, τ2, η, n Heidler function parameters Ip, tf, Sm, th peak value, equivalent front time, maximum steepness, and time to half value of i(t) v(t) voltage across insulators at time t D(t) value of the flashover model integral at time t V0, t0, k parameters of the integration model DE* flashover value of D Fp annual number of flashovers A, ntot, nd Monte Carlo events: collecting area, total number and number of direct events causing a flashover.

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A Detailed Field Study of Lightning Stroke Effects on Distribution Lines

Cited by 25 publications

References 7 publications

Proposal for an automatic system correlation between failures on electrical distribution lines and atmospheric lightning discharges

Proposal for an automatic system correlation between failures on electrical distribution lines and atmospheric lightning discharges

Overview of Recent Progress in Lightning Research and Lightning Protection

Assessment of the Effects of the Electromagnetic Pulse on the Response of Overhead Distribution Lines to Direct Lightning Strikes

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