浅谈雷电流效应在雷电防护设计中的应用

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英文篇名：Application of Lightning Current Effect in Lightning Protection Design 作者：陈腊生 ; 聂武夫 ; 陈太龙 ; 刘伟峰 ; 马岗 英文作者：Chen Lasheng;Nie Wufu;Chen Tailong;Liu Weifeng;Ma Gang;SINOPEC Catalyst Co.,Ltd.Changling Branch;Yueyang Weather Bureau; 关键词：雷电流 ; 热效应 ; 雷电防护 ; 电磁屏蔽 英文关键词：lightning current;;heating effect;;lightning protection;;magnetic shielding 中文刊名：SAFE 英文刊名：Safety Health & Environment 机构：中国石化催化剂有限公司长岭分公司;湖南省岳阳市气象局; 出版日期：2019-03-15 出版单位：安全、健康和环境 年：2019 期：v.19 语种：中文; 页：SAFE201903003 页数：5 CN：03 ISSN：37-1388/X 分类号：15-19

摘要

对雷电流在雷击点和雷电流流经金属体阶段的热效应和机械效应进行计算分析,重点计算分析各金属材料截面积对导体温升的影响。计算在雷击点雷电流对铝、钢、铜等金属材料的熔化破坏效应,指出雷电流的温升效应对金属结构自身不具备伤害性且可逆;而雷电流在雷击点对金属体会有明显的熔化破坏效应,故具有承重、受力等结构力学性质的金属构件不适合作为接闪器直接承受雷击。对雷击的电磁感应效应进行实例分析,说明其在电子信息系统电磁屏蔽中的应用。
        The thermal and mechanical effects of lightning current at the lightning strike point and the metal body were calculated and analyzed,to figure out the influence of cross-section area of different metal materials on conductor 's temperature rise. The melting damage effect of lightning current on aluminum,steel,copper and other metal materials at the lightning strike point was calculated. It was pointed out that the temperature rise caused by the lightning current washarmlessto the metal structure and was reversible. But lightning current had obvious melting damage effect on the metal body at the lightning strike point,therefore metal component with structural mechanical properties such as load-bearing and stress should not be a choice for lightning arrester.The electromagnetic induction effect of the lightning strike was analyzed and its application in the electromagnetic shielding of electronic information system wasdemonstrated.

引文

[1] GB50057-2010建筑物防雷设计规范[S].
    [2]潘忠林.现代防雷技术与工程[M].成都:电子科技大学出版社,2012.
    [3]周闯,刘全桢,高鑫,等.雷电电磁脉冲的效应试验及其防护措施[J].安全、健康和环境,2013,13(03):41-43.
    [4]李建伟,刘全桢,阎明,等.石化企业35kV输电线路防雷对策研究[J].安全、健康和环境,2015,15(03):11-14.
    [5]高剑,刘全桢,刘宝全,等.新型雷电预警系统在石化行业的应用[J].安全、健康和环境,2017,17(07):14-16.