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广东野外雷电综合观测试验十年进展
  • ISSN号:0577-6619
  • 期刊名称:《气象学报》
  • 时间:0
  • 分类:P427.3[天文地球—大气科学及气象学]
  • 作者机构:[1]中国气象科学研究院灾害天气国家重点实验室/雷电物理和防护工程实验室,北京100081, [2]中国气象局广州热带海洋气象研究所/广东省区域数值天气预报重点实验室,广州510080, [3]从化市气象局,广州510900
  • 相关基金:国家重点基础研究发展计划项目(2014CB441405)、国家自然科学基金项目(51420105011)、中国气象科学研究院基本科研业务费项目(20152006、2014R015). 致谢:中国气象科学研究院、广东省气象局、广州市气象局、从化市气象局的很多工作人员和研究生参加了野外试验工作,在此表示衷心感谢.
中文摘要:

雷电野外科学试验是认识雷电发生、发展物理过程及其致灾机理的重要途径,也是开展真实雷电电磁环境下雷电防护技术测试的重要方式。自2006年开始,中国气象科学研究院和广东省气象局在广州野外雷电试验基地,持续合作开展了雷电野外综合观测试验,在人工触发闪电和自然闪电物理过程及其雷电防护技术测试试验等方面取得了若干研究结果。十年期间共成功触发闪电94次,回击电流峰值最大值为42kA,平均值为16kA;分析给出了自然闪电预击穿过程电场变化脉冲特征类型和差异;观测发现高建筑物上行连接先导可达几百米甚至超过1km,其发展速度可达106^m/s量级,下行先导与上行连接先导的连接呈多样性;雷电防护技术测试试验表明人工触发闪电近距离电磁场耦合在架空线路上的感应电压达到千伏量级,多回击、长连续电流和地电位抬升是造成浪涌保护器(SPD)损害的主要因素;闪电定位系统探测性能的评估结果显示粤港澳闪电定位系统的闪电和回击的探测效率分别为96%和89%,定位误差算术平均值为532m,回击电流强度的估算值约为真实值的0.63倍。

英文摘要:

Lightning field experiment is an important approach to understand physical processes involved in the occurrence and development of lightning as well as its disaster-causing mechanism. It is also an important way to carry out tests of lightning protection technology under real lightning electromagnetic environment. Since 2006, comprehensive lightning field observation experiments have been jointly conducted by Chinese Academy of Meteorological Sciences and Guangdong Meteorological Bu- reau. Research results of physical processes of artificially triggered lightning and natural lightning as well as tests of lightning protection technology are reviewed in this paper. A total of 94 flashes were successfully triggered during the ten-year period, and the maximum and average peak current of return stroke is 42 kA and 16 kA, respectively. Types and difference characteris- tics of electric field change pulse involved in the preliminary breakdown process of natural lightning are analyzed. It is found that the length of upward connecting leader initiated from tall structures can be several hundred meters or even more than 1 km, and its speed can reach up to the magnitude of 106 m/s. Great diversity is found in the attachment of downward leader and up- ward connecting leader. Tests of lightning protection technology show that the voltage on the overhead lines induced by close- distance electromagnetic wave coupling from artificially triggered lightning could be up to the magnitude of kV. Multiple return strokes, continuing current and ground potential rise are the main factors that cause damages to surge protective device (SPD). Results of performance evaluation for the Lightning Location System of Guangdong-Hongkong-Macau show that the detection efficiency of flash and stroke are 96% and 89 %, respectively; the arithmetic mean value of location error is 532 m; the esti- mated value of return stroke current intensity is about 63 % of the true value.

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期刊信息
  • 《气象学报》
  • 北大核心期刊(2011版)
  • 主管单位:中国气象局
  • 主办单位:中国气象学会
  • 主编:丁一汇
  • 地址:北京市中关村南大街46号
  • 邮编:100081
  • 邮箱:qxxb@cms1924.org
  • 电话:010-68406942
  • 国际标准刊号:ISSN:0577-6619
  • 国内统一刊号:ISSN:11-2006/P
  • 邮发代号:2-368
  • 获奖情况:
  • 第三届中国出版政府奖提名奖
  • 国内外数据库收录:
  • 美国化学文摘(网络版),日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),中国北大核心期刊(2000版)
  • 被引量:21756