移动基站共址架空输电塔专用防雷系统研究  

Research on Special Co-site Lightning Protection System for Overhead Transmission Towers of Mobile Base Stations

作　　者：邵明驰 Shao Mingchi(State Grid Jiangsu Electric Power Co., Ltd. Nanjing Power Supply Branch, Nanjing Jiangsu 210019, China)

机构地区：[1]国网江苏省电力有限公司南京供电分公司,江苏南京210019

出　　处：《电气自动化》2021年第2期16-18,共3页Electrical Automation

基　　金：国网江苏省电力有限公司科技项目+无线通信电力共塔建设关键技术研究(J2019067)。

摘　　要：架空输电塔上的防雷系统只针对架空输电塔而设计,未能很好地保护移动基站。为达到保护架空输电塔的同时也能保护移动基站目的,设计了一种移动基站共址架空输电塔专用防雷系统。在正负极性标准雷电波的作用下,获取闪络电压,并计算雷电流超出概率。根据计算结果,抑制雷击过电压,完成系统软件设计。通过系统测试可知,使用移动基站共址架空输电塔专用防雷系统后,接地电阻由6.75Ω降到了0.54Ω以下,且瞬时电压呈平稳状态,降低了线路雷击跳闸率,提高了耐雷水平。The lightning protection system on the overhead transmission tower,designed only for the tower itself,cannot provide a good protection for mobile base stations.In order to protect both of the tower and the mobile base station,a special co-site lightening protection system was designed for overhead transmission towers of mobile base stations.Flashover voltage was obtained under the action of the standard positive/negative lightning waves,and lightning current overstepping probability was calculated.According to calculation results,the lightning overvoltage was suppressed,and system software design was completed.System testing indicated that after adoption of the special lightning protection system,the grounding resistance dropped from 6.75Ωto less than 0.54Ωand instantaneous voltage was maintained in a stable condition,so that line lightning trip-out rate was reduced and lightning resistance was enhanced.

关 键 词：移动基站共址 架空输电塔 防雷系统 共用接地装置 闪络电压 

分 类 号：TN55.6[电子电信]