Statistical Analyses of Cloud-to-ground Flash Activities in Hunan Province

摘要：

The laws of cloud-to-ground flash activities are the important fundamental data of lightning protection engineering, which can provide reference for the selection of transmission line route and for the effectual lightning protection measures.Based on the lighting data of the lightning location system (LLS) in Hunan Province from 2002 to 2010, the probability distribution of lightning current magnitude is analysed in this paper.The temporal and spatial distribution of lightning activities in Hunan Province is acquired by counting the cloud-to-ground flashes in different time and different regions with geographic information system (GIS) and grid method.Statistical results show that there exist obvious differences of cloud-to-ground flashes in different time and different regions for the lightning activities in Hunan Province.The lightning activities in some regions are intensive and the cloud-to-ground flash density reached 6.9 flashes per square kilometer per year.The probability distribution of lightning current magnitude in Hunan Province accords with a lognormal distribution approximatively.

关键词： cloud-to-ground flash cumulative probability of lightning current magnitude temporal and spatial distribution of lightning cloud-to-ground flash density

作者: Zhenglong Jiang Jiazheng Lu Chun Zhao Zhishu Shen Junjia He

作者单位: Power Transmission and Distribution Equipment Anti-icing& Reducing-disaster Technology LaboratoryHun College of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan

会议类型: 国际会议

会议名称: 第七届亚太防雷国际会议

会议地点: 成都

会议语种:英文

页码: 1-4

在线出版日期: 2011-11-01（万方平台首次上网日期，不代表论文的发表时间）