雷击引发低压系统冲击电流研究  

Study on Impulse Current of Low-voltage Systems Initiated by Lightning Stroke

作　　者：洪友白 

机构地区：[1]厦门合道工程设计集团有限公司,福建省厦门市361004

出　　处：《建筑电气》2014年第6期11-17,共7页Building Electricity

摘　　要：以IEC标准和GB 50054-2010《建筑物防雷设计规范》为指导,从雷击损害源、雷击损害类型、雷击电磁脉冲、雷击电涌电流、冲击电流、最大冲击电流入手,逐步深入研究低压系统雷击冲击电流发生的种种情况,进而推断最大冲击电流的起因,作出"雷击建筑物时引发低压系统的最大冲击电流缘于电气系统与防雷系统‘共地’,应在最靠近引来线路入户处安装Ⅰ级试验的SPD"的重要结论及与此结论紧密相关的三条重要推论。IEC standard and GB 50054 - 2010 Code for Design Protection of Structures against Lightning are used as a guidance to gradually and deeply study various occurrences of lightning impulse current of low-voltage systems via damage sources, damage types, lightning electromagnetic impulse, lightning surge current, impulse current, maximum impulse current. An important conclusion that “the maximum impulse current of the low-voltage systems when the lightning strikes buildings is caused due to‘common ground’ of an electrical system and a lightning protection system, so Class I test SPD shall be set at an entrance closest to the lead-in line” is presented. And three important inferences closely related to the conclusion of this paper are also presented.

关 键 词：损害源 损害类型 雷击电磁脉冲 电涌电流 冲击电流 电阻耦合 共用接地装置 

分 类 号：TU895[建筑科学]