人工引雷至架空线路与地面雷电流峰值估算比较  

Comparison of Lightning Peak Current Estimation Between Triggered Lightning Striking the Overhead Line and the Ground

作　　者：蔡力[1] 胡强[1] 彭向阳 陈绍东[3] 周蜜[1] 王建国[1] CAI Li;HU Qiang;PENG Xiangyang;CHEN Shaodong;ZHOU Mi;WANG Jianguo(School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China;Guangdong Power Grid Electric Power Research Institute Co.,Ltd.,Guangzhou 510080,China;Guangzhou Institute of Tropical and Marine Meteorology,China Meteorological Administration,Guangzhou 510080,China)

机构地区：[1]武汉大学电气与自动化学院,武汉430072 [2]广东电网有限责任公司电力科学研究院,广州510080 [3]中国气象局广州热带海洋气象研究所,广州510080

出　　处：《高电压技术》2023年第6期2589-2597,共9页High Voltage Engineering

基　　金：国家自然科学基金(52177154)。

摘　　要：基于2018—2019年在广州从化进行的引雷至架空线路和引雷至地面两种火箭引雷试验,分析对比了两种引雷情况下在试验现场测得的回击实测电流峰值以及由雷电定位系统提供的回击估算电流峰值和回击远电场峰值,评估了两种引雷情况下雷电定位系统的电流估算情况。引雷至地面(线路)情况下87(70)次回击实测电流峰值的几何平均值是13.4(16.4)kA。相对于引雷至地面的回击,引雷至线路情况下回击电流峰值估算误差整体更偏向纵轴的负轴,这可能是因为电流峰值相同的回击,引雷至线路时产生的远电场峰值比引雷至地面时约低14%。On the basis of two types of rocket-triggered lightning experiments,i.e.,lightning striking the overhead line and the ground,which were conducted in 2018—2019 in Conghua,Guangzhou,we comparatively analyzed the return stroke peak currents measured at the test site,the estimated return stroke peak currents,and the return stroke peak far electric fields provided by the Foshan Total Lightning Location System.Moreover,the current estimation of the lightning location system was evaluated for the two types of experiments.The geometric mean of 87(70)measured return stroke peak currents in the case of lightning striking the ground(line)is 13.4(16.4)kA.Compared with the lightning striking the ground,the estimation error of the return stroke peak current is more inclined to the negative axis of the vertical axis in the case of lightning striking to the line.The possible reason is that,for return strokes with the same peak current,the peak far electric field generated by lightning striking the line is lower by about 14%than that by lightning striking the ground.

关 键 词：雷电流 回击 雷电定位系统 人工引雷 架空线路 辐射电场 

分 类 号：TM863[电气工程—高电压与绝缘技术]