高层建筑引发的闪电——回顾

G. Diendorfer
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引用次数: 6

摘要

塔式触发雷击的电流参数对高空物体(如风力涡轮机)的防雷具有重要意义。向上闪电的发生条件仍是研究的主题,可能需要考虑当地的条件。本文总结了奥地利盖斯伯格塔(GBT)向上闪电的测量结果,并与其他一些塔或火箭触发闪电的测量结果进行了比较。在GBT观测到的向上闪电中,由正向上引线引发的向上闪电是最常见的类型(93%),然而,3%的放电是双极的,4%的塔闪光是将正电荷降至地面。正极闪光由带负电荷的先导触发,观察到与步进先导过程相关的短电流脉冲。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Lightning initiated from tall structures — A review
Current parameters of tower triggered lightning are of interest for the lightning protection of high objects, such as wind turbines. Initiation conditions of upward lightning are still subject of ongoing research and probably needs consideration of local conditions. In this paper results of measurements of upward lightning from the Gaisberg Tower (GBT) in Austria are summarized and compared with some other measurements on towers or rocket-triggered lightning. Upward lightning initiated by a positive upward leader is the most common type (93%) of lightning observed at the GBT, nevertheless 3% of the discharges are bipolar and 4% of the tower flashes are lowering positive charge to ground. Positive flashes are initiated by a negatively charged leader and short current pulses associated with the stepping leader process are observed.
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