Analysis of Lightning Activity in Area of Triggering Lightning Tower Based on Spatial-temporal Clustering

被引：0
|
作者：
Wang Y. [1 ]
Xiang M. [1 ]
Deng Y. [1 ]
Chen X. [1 ]
Peng X. [2 ]
Wang R. [2 ]
机构：
[1] School of Electrical Engineering and Automation, Wuhan University, Wuhan
[2] Electric Power Research Institute, Guangdong Power Grid Company Ltd., Guangzhou
来源：
Gaodianya Jishu/High Voltage Engineering | 2021年 / 47卷 / 12期
关键词：
Cloud-to-ground lightning data; Cluster analysis; Lightning activity track; Lightning location system; Triggering lightning tower;
D O I：
10.13336/j.1003-6520.hve.20201322
中图分类号：
学科分类号：
摘要：
In recent years, based on the characteristics of leading and actively triggering lightning, the scheme to protect the safe operation of the adjacent transmission lines by using triggering lightning tower has been gradually applied in practice. However, the research on the law of the influence of lightning pylons on regional lightning activities is rarely available in the literature, resulting in a gap in the research on the effect and principle of active triggering lightning towers. Cloud-to-ground (CG) lightning activity has the characteristics of clustering in time and space. In order to study the law of lightning activity in the triggering lightning tower area, the grid method is used to delimit the area based on the 2011-2017 lightning activity data in Gaoming area of Foshan(a south city of China), which is collected by the lightning location system. The massive lightning data in the area are clustered in time and space, and the algorithm of Density-Based Spatial Clustering of Applications with Noise is used to extract the track of lightning activity in thunderstorm time zone and to process the split and aggregation phenomenon in the process of lightning movement. Then, the intensity, the trajectory, and the trend of CG lightning activity are compared and analyzed before and after the lightning tower is put into production. The results show that the triggering lightning tower has certain attraction to the lightning activities, and the probability of lightning striking and discharging in the area greatly increases. Also, the absorption effect of the triggering lightning tower on the lightning cloud charge will reduce the current amplitude to a certain extent after passing through covered area. The direction and proportion of the main lightning corridor have been changed by the construction of triggering lightning tower to some extent. The conclusions can provide reference for the selection of triggering lightning tower project location in the future. © 2021, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：4255 / 4264
页数：9
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