考虑地形地貌影响的云南省落雷孕灾环境敏感性分析  

Sensitivity Analysis on Hazard-pregnant Environment of Lightning Activity in Yunnan Province Considering Effects of Topography

作　　者：周仿荣 潘浩 马仪 邓冶强 王羽[2] 黄顺勇 ZHOU Fangrong;PAN Hao;MA Yi;DENG Yeqiang;WANG Yu;HUANG Shunyong(Joint Laboratory of power remote sensing technology(Electric Power Research Institute,Yunnan Power Grid Co.,Ltd.),Kunming 650217,Yunnan Province,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,Hubei Province,China)

机构地区：[1]电力遥感技术联合实验室(云南电网有限责任公司电力科学研究院),云南省昆明市650217 [2]武汉大学电气与自动化学院,湖北省武汉市430072

出　　处：《电网技术》2022年第7期2834-2841,共8页Power System Technology

基　　金：直流输电技术国家重点实验室开放基金(SKLHVDC-2020-KF-11)。

摘　　要：地形地貌特征是影响区域雷电特征的重要因素之一,明确地闪活动与地形地貌的定量关系是评估孕灾环境危险性高低并采取主动防护措施的前提。该文融合利用云南省2010-2019年雷电定位观测数据、30m分辨率数字高程模型数据以及10m分辨率地表覆盖数据,利用数理统计方法分析了海拔高度、坡度、坡向、地形位置指数、地表覆盖类型与地闪密度的统计特性。利用熵权法构建落雷孕灾环境敏感度综合指标,对不同因子的定量化评估得到地形位置指数的影响权重最大,海拔次之,坡度的权重最小。通过地闪密度与敏感度的相关性分析得到两者之间的相关系数为0.473,说明了用落雷孕灾环境敏感度评估区域落雷风险的有效性。Topography is one of the important factors that affect the regional lightning characteristics.Clarifying the correlation between the ground lightning activity and the local topography is a prerequisite for assessing the level of lightning hazards in the hazard-pregnant environment and taking active protections.In this paper,the lightning location observation data from 2010 to 2019,the 30m resolution digital elevation model data and the 10m resolution surface coverage data in Yunnan Province are used to analyze the statistical characteristics of altitudes,slopes,aspects,terrain location indexes,surface coverage types and lightning density by using the mathematical statistics.The entropy weight method is used to construct the comprehensive indexes of environmental sensitivity of lightning disasters.The quantitative evaluation of different factors shows that the terrain location index has the biggist weight,followed the altitude,and the slope has the smallest weight.Through the correlation analysis between the lightning density and the sensitivity,the correlated coefficient between them is 0.473,which shows the effectiveness of using the environmental sensitivity to assess the regional lightning risks.

关 键 词：地闪活动 地形地貌特征 熵权法 落雷孕灾环境 敏感性 

分 类 号：TM721[电气工程—电力系统及自动化]