Evaluation of Lightning Fault Rate of Transmission Line on the Coastal Area of the Sea of Japan in Winter

Saito, Mikihisa; Ishii, Masaru; Fujii, Fumiyuki; Matsui, Michihiro; Kawamura, Hironao; Itamoto, Naoki

doi:10.1541/ieejpes.129.157

Cited by 9 publications

(7 citation statements)

References 5 publications

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“…The estimated double-circuit outage rate of a fictitious 500 kV transmission line with the average tower height of 90 m is 1.5 to 2, based on Fig. 1 and 2 [10]. This number far better agrees to the actual performance than that of the conventional prediction model, which only postulates downward lightning strokes.…”

Section: B Estimation Of Lightning Performance Of Transmission Line mentioning

confidence: 81%

Probability of lightning hits to tall structures taking account of upward lightning

Ishii

Saito

Fujii

et al. 2010

2010 Asia-Pacific International Symposium on Electromagnetic Compatibility

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It was revealed that serious lightning faults of high voltage power transmission lines in winter along the coastal area of the Sea of Japan were due to upward lightning initiated from transmission towers. Wind turbines in the same region, reportedly suffer from high lightning fault rate, must also generate frequent upward lightning. Taking account of the aerological data which indicate the heights of the charged region in thunderclouds, a method to evaluate frequency of upward lightning from tall structures in cold regions of Japan in winter is proposed. With this new method, it is possible to evaluate the probability of lightning hits to tall structures in Japan through the year.

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Section: B Estimation Of Lightning Performance Of Transmission Line mentioning

confidence: 81%

Probability of lightning hits to tall structures taking account of upward lightning

Ishii

Saito

Fujii

et al. 2010

2010 Asia-Pacific International Symposium on Electromagnetic Compatibility

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“…(4) and the increase rate (l ei ) estimated by Eq. (9). The correlation coefficient of 0.07 obtained with Eq.…”

Section: Factors Affecting Increase Rate Of Upward Lightning Strikesmentioning

confidence: 98%

“…l i (km 2 ) is the rate at which the number of strikes per unit density detected by the LLS in the hot spot area increases due to the presence of high structure. The dimension is km 2 because formally, this value expresses the area in which lightning strikes concentrate, just as in the case of the previously defined lightning rate [9]. Table 1 lists 10 locations with high increase rates of upward lightning strikes observed by the JLDN in winter on the Sea of Japan side of Honshu.…”

Section: Hot Spots Located By Jldnmentioning

confidence: 99%

“…3) improves to 0.86 when using Eq. (9). The decline in the increase rate can be attributed to factors such as the distance from the coastline, the surrounding terrain, the prevailing wind direction, and so on.…”

Section: Factors Affecting Increase Rate Of Upward Lightning Strikesmentioning

confidence: 99%

“…We set the surrounding areas and hot spot area as squares, 9 km and 3 km on a side, respectively, but l i and N u remained unchanged as the size of the surrounding area and hot spot area were varied, so long as upward strikes (N u ) were observed only within the hot spot area, and the surrounding density D b was the same. However, the parameters of lightning discharges depend on the distance from the coastline of the Sea of Japan . Thus, the lightning density, current distribution, and polarity ratio are affected by the distance.…”

Section: Hot Spots Located By Jldnmentioning

confidence: 99%

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Frequency of Upward Lightning Hits to Wind Turbines in Winter

Saito

Ishii

Ohnishi

et al. 2014

Electrical Engineering Japan

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SUMMARYIn recent years, frequent damage to wind turbines by winter lightning has been reported in the region along the Sea of Japan. It is a serious finding that lightning hits concentrate on wind turbines in this region. The authors investigated the increase rate of the frequency of lightning hits on wind turbines due to wind turbine construction by using LLS (lightning location system) data. As a result, an experimental formula to estimate the increase rate of the frequency of lightning hits on wind turbines as a function of parameters related to the construction conditions, namely the height of wind turbines, the height above sea level, and the latitude, is proposed. C⃝ 2014 Wiley Periodicals, Inc. Electr Eng Jpn, 190(1): 37-44, 2015; Published online in Wiley Online Library (wileyonlinelibrary.com).

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Estimation of the current peak value distribution of all lightning to the ground by electro‐geometric model

Sakata¹,

Yamamoto

Sekioka

et al. 2013

Electrical Engineering Japan

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When we examine the lightning frequency and the lightning shielding eﬀect of the electro‐geometric model (EGM), we need the current distribution of all lightning to the ground. The distribution of lightning current to structures is diﬀerent from this distribution, but it has been used in EGM conventionally. We assumed the lightning striking distance coeﬃcient related to the height of structures in order to obtain a result which corresponds to the observed frequency of lightning to structures, and estimated the current distribution of all lightning to the ground from data listed in the IEC 62305 series of EGM. The estimated distribution adjusted by the LLS detection eﬃciency agreed well with the distribution observed by LLS. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 184(3): 14–26, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22356

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Evaluation of Lightning Fault Rate of Transmission Line on the Coastal Area of the Sea of Japan in Winter

Cited by 9 publications

References 5 publications

Probability of lightning hits to tall structures taking account of upward lightning

Probability of lightning hits to tall structures taking account of upward lightning

Frequency of Upward Lightning Hits to Wind Turbines in Winter

Estimation of the current peak value distribution of all lightning to the ground by electro‐geometric model

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