垂直電界測定に基づく雷撃点推定

カテゴリ: 部門大会

論文No: 76

グループ名: 【B】平成19年電気学会電力・エネルギー部門大会講演論文集

発行日: 2007/09/12

タイトル(英語): Estimation of Lightning Striking Points Based on Measurements of Vertical E-Field

著者名: 道下 幸志(静岡大学),西平 賢行(静岡大学),本郷 保二(東北電力),横山 茂(電力中央研究所)

著者名(英語): Koji Michishita|Takayuki Nishihira|Yasuji Hongo|Shigeru Yokoyama

キーワード: 雷|帰還雷撃|電界|到来時間差方式|Lightning|Return stroke|Erectric Field|TOA(time of arrival)

要約(日本語): Accurate estimation of the lightning striking points is practically important to find the fault location of the power line. Recent progress of the lightning locating technique has made it possible to estimate the striking points with the accuracy of less than 500m. To enhance the location accuracy, the authors measure the vertical electric field at six points around Shirakawa area in Fukushima prefecture. The base line of measuring points is about 10km, which is less than one tenth of the base line of the lightning location system. In this paper, the authors estimated the locations of the lightning striking points by using the time of arrival technique and compared with the results obtained by the lightning location system. Furthermore, the cause of the discrepancy between estimated lightning striking points is discussed, and the location accuracy by the authors’ method is roughly evaluated.

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