Improved Detection of Winter Lightning in the Tohoku Region of Japan using Vaisala's LS700x Technology

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カテゴリ: 論文誌(論文単位)グループ名: 【B】電力・エネルギー部門発行日: 2012/06/01タイトル(英語): Improved Detection of Winter Lightning in the Tohoku Region of Japan using Vaisala's LS700x Technology著者名: Kenneth L. Cu mmins (Department of Atmospheric Sciences, University of Arizona), Noriyasu Honma (Research & Development Center, Tohoku Electric Power Company, Inc.), Alburt E. Pifer (Vaisala), Tim Rogers (Vaisala), Masataka Tatsumi (Sankosha Corporation)著者名(英語): Kenneth L. Cummins (Department of Atmospheric Sciences, University of Arizona), Noriyasu Honma (Research & Development Center, Tohoku Electric Power Company, Inc.), Alburt E. Pifer (Vaisala), Tim Rogers (Vaisala), Masataka Tatsumi (Sankosha Corporation)キーワード: winter lightning，lightning detection要約(英語): The demand for both data quality and the range of Cloud-to-Ground (CG) lightning parameters is highest for forensic applications within the electric utility industry. For years, the research and operational communities within this industry in Japan have pointed out a limitation of these LLS networks in the detection and location of damaging (high-current and/or large charge transfer) lightning flashes during the winter months (so-called "Winter Lightning"). Most of these flashes appear to be upward-connecting discharges, frequently referred to as "Ground-to-Cloud" (GC) flashes. The basic architecture and design of Vaisala's new LS700x lightning sensor was developed in-part to improve detection of these unusual and complex flashes. This paper presents our progress-to-date on this effort. We include a review of the winter lightning detection problem, an overview of the LS700x architecture, a discussion of how this architecture was exploited to evaluate and improve performance for winter lightning, and a presentation of results-to-date on performance improvement. A comparison of GC detection performance between Tohoku's operational 9-sensor IMPACT (ALDF 141-T) LLS and its 6-sensor LS700x research network indicates roughly a factor-of-two improvement for this class of discharges, with an overall detection of 23/24 (96%) of GC flashes.本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.132 No.6 （2012） 特集：冬季雷，正極性雷，高建造物への落雷（ISWL）本誌掲載ページ: 529-535 p原稿種別: 論文／英語電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/132/6/132_529/_article/-char/ja/ Show more