屏蔽套内雷电感应电压分析  

Analysis of lightning-induced voltage inside shielding sleeve

作　　者：周秧[1] 周晓虎[1] 

机构地区：[1]国网浙江省电力公司培训中心浙西分中心,浙江建德311600

出　　处：《黑龙江电力》2014年第6期502-505,共4页Heilongjiang Electric Power

摘　　要：为了研究直击雷的雷电流沿金属管传输时在3种不同材质屏蔽管内的金属线上产生的感应电压,笔者应用一个简单的电阻电路图,对3种不同金属屏蔽管内金属线上的感应电压进行分析、计算,得到不同的感应电压数值,并对电子设备防雷提出了建议。数值计算结果表明,影响导线上感应电压的关键因素是屏蔽管的转移阻抗,不同金属材质屏蔽管的屏蔽效果有差异。In order to study the induced voltage generated on the wires in shielding pipe made of 3 different materi- als when the current of direct lightning transmits through metal pipes, the author works out the value of the induced voltage by analyzing and calculating with a simple resistance circuit diagram , and advises on lightning protection for electronic equipment. The result of numerical calculation shows that the key factor that influences induced voltage is the transfer impedance of shielding pipe, and the shielding effect varies from different metal materials.

关 键 词：雷电 屏蔽 防雷 转移阻抗 

分 类 号：TM863[电气工程—高电压与绝缘技术]