Protective Effects of Surge Arresters on Power Distribution Lines against Direct Lightning Hits to Overhead Ground Wire

Imai, Yasutomo; Matsuura, Tatsukichi; Itoh, Kazumi; Ishibe, Shinji; Azuma, Masahiro; Shimomura, Tetsuro

doi:10.1541/ieejpes1990.111.6_619

Cited by 14 publications

(9 citation statements)

References 2 publications

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“…In this context, indirect lightning strikes have long been studied [1,2], and the appropriate countermeasures have essentially been established. Recent experimental research has shown the feasibility of protection against direct lightning strokes [3], and lightning surge analysis using EMTP (ElectroMagnetic Transients Program) has been applied to the lightning protection effects of overhead ground wires and surge arresters [4,5], burnout of surge arresters [6,7], grounding optimization of surge arresters [8,9], and the like.…”

Section: Introductionmentioning

confidence: 99%

Lightning surge characteristics of an actual distribution line and validation of a distribution line model for lightning overvoltage studies

Matsuura

Noda

Asakawa

et al. 2010

Electrical Engineering Japan

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SUMMARYFor distribution lines in Japan, protection measures against lightning-induced overvoltages have been taken and can be considered almost complete. The focus of lightning protection measures has moved to overvoltages due to direct lightning strokes. Studies of such overvoltages require simulations using the EMTP (Electro-Magnetic Transients Program), and components of a distribution line must be modeled appropriately in the EMTP simulation environment. The authors have proposed an EMTP model of a distribution line in a separate paper. This paper consists of two parts. The first part presents surge characteristics of a distribution line obtained by measurement using an actualscale test distribution line. In particular, the result reveals noteworthy characteristics of the surge impedance of a reinforced concrete pole and the wavefront-time dependence of insulator voltages. The second part presents a validation of the distribution line model previously proposed by the authors. The validation shows that the distribution line model accurately reproduces the measured voltage and current waveforms for various wavefront times of the injected currents.

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Section: Introductionmentioning

confidence: 99%

Lightning surge characteristics of an actual distribution line and validation of a distribution line model for lightning overvoltage studies

Matsuura

Noda

Asakawa

et al. 2010

Electrical Engineering Japan

View full text Add to dashboard Cite

show abstract

“…Indirect lightning strikes have long been studied [1,2], and appropriate countermeasures have been basically established. In recent years, the focus of lightning protection research has shifted to direct lightning strikes, and lightning surge analysis using EMTP (Electro-Magnetic Transients Program) has been applied to lightning protection effects of overhead ground wires and surge arresters [3,4], burnout of surge arresters [5,6], grounding optimization of surge arresters [7,8], etc.…”

Section: Introductionmentioning

confidence: 99%

“…Most available studies of direct lightning strikes on distribution lines [3][4][5][6][7][8] consider mild lightning currents with wavefront length of several microseconds, and no reports on steep lightning currents have been published. In many actual waveforms of lightning current, the wavefront rises gradually at first but then rises steeply [9].…”

Section: Introductionmentioning

confidence: 99%

A distribution line model for lightning overvoltage studies

Matsuura

Noda

Asakawa

et al. 2010

Electrical Engineering Japan

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SUMMARYRecently, the focus of lightning protection measures for distribution lines has moved from a nearby lightning stroke to a direct lightning stroke. Studies of direct lightning stroke countermeasures are generally carried out by digital simulations using the EMTP (Electro-Magnetic Transients Program). Thus, components of a distribution line must be modeled appropriately in the EMTP for accurate simulations.The authors have previously clarified the surge response of a distribution line by pulse tests using a reducedscale distribution line model. In this paper, first, the results of the pulse tests are simulated in the EMTP using a conventional model which represents a distribution pole by a single lossless distributed-parameter line model, and comparisons with the test results show that transient overvoltages generated at the insulators cannot accurately be reproduced by the conventional model. This indicates that a special treatment is required to represent the transient response of a distribution pole and wires. Then, this paper proposes new EMTP models of the pole and wires which can reproduce the transient overvoltages at the insulators. The parameter values of the proposed models can be determined based on a pulse test result.

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“…Analytical techniques for induced lightning voltages [5] and experimental and analytical studies of direct lightning strokes [6,7] have been developed. As a result, it has been made clear that countermeasures against the induced lightning voltage become possible by the installation of surge arresters at appropriate intervals, and that countermeasures against direct lightning strokes, hitherto considered difficult, have become possible by the installation of surge arresters and equipment with built-in lightning protection elements.…”

Section: Introductionmentioning

confidence: 99%

Distribution arrester outages caused by lightning backflow current flowing from customer's facility into power distribution lines

et al. 1999

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Direct lightning strokes are considered to be a main cause of damage to surge arresters on power distribution lines. Recently, lightning performance of distribution lines has been observed using still cameras, and lightning‐caused distribution outages on hilltop areas on the coast of the Sea of Japan have been investigated. This research has shown a possibility that lightning backflow current flowing from customer facilities into distribution lines causes damage to surge arresters on the distribution lines. We have investigated the lightning backflow current flowing from customer facilities into distribution lines as a cause of damage to surge arresters. The main results are as follows: (1) The electric charge of the backflow current flowing into distribution lines is more than 60% of that of the lightning stroke current. (2) If the grounding resistance of the customer's facility is not low, the failure rates of a surge arrester caused by backflow current due to winter lightning is more than 90% of that caused by direct lightning strokes. © 1999 Scripta Technica, Electr Eng Jpn, 126(3): 9–20, 1999

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Protective Effects of Surge Arresters on Power Distribution Lines against Direct Lightning Hits to Overhead Ground Wire

Cited by 14 publications

References 2 publications

Lightning surge characteristics of an actual distribution line and validation of a distribution line model for lightning overvoltage studies

Lightning surge characteristics of an actual distribution line and validation of a distribution line model for lightning overvoltage studies

A distribution line model for lightning overvoltage studies

Distribution arrester outages caused by lightning backflow current flowing from customer's facility into power distribution lines

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