线路避雷器安装方案及效果分析  

Analysis on Installation and Effect of Transmission Line Surge Arresters

作　　者：詹花茂[1] 李成榕[1] 陈秀娟[1] 李信[1] 

机构地区：[1]华北电力大学电气工程学院,北京102206

出　　处：《电瓷避雷器》2004年第3期32-35,共4页Insulators and Surge Arresters

摘　　要：输电线路的雷害事故不仅会造成危险的雷电过电压,还可能扰乱电力供应。推荐采用有选择地加装线路避雷器的做法来减少雷电引起的绝缘闪络。以一条110kV传输线路为例,说明制定线路避雷器安装方案的原则:首先区分线路绝缘子闪络是由反击还是绕击引起的;线路避雷器的安装主要以保护易遭受雷击的个别杆塔为目的,除此之外,应兼顾整条线路耐雷水平的提高。The lightning strokes on transmission lines not only cause dangerous overvoltages but also disturb the power supply.To reduce the probability of occurrence of insulation flashover caused by lightning,a selective installation of transmission line surge arresters is recommended. With an example of a 110kV transmission line,some principles for installation of surge arresters are described.At first,whether shielding failures or backflashovers causing the line insultor flashover should be ascertained.Then,the main objective of installation of surge arresters is to afford protection for towers liable to lightning stroke and besides,the improvement of the lightning withstand level should be considered.

关 键 词：线路避雷器 反击 绕击 耐雷水平 

分 类 号：TM862[电气工程—高电压与绝缘技术]