高土壤电阻率地区喷射气体灭弧防雷效果分析  

Analysis on Lightning Protection Effect of Jet Gas Arc Extinguishing in High Soil Resistivity Area

作　　者：李继强[1] 毛成程 王成全[1] 徐国强[1] 刘宗杰[1] 王巨丰[2,3] 孟伟航 LI Ji-qiang;MAO Cheng-cheng;WANG Cheng-quan;XU Guo-qiang;LIU Zong-jie;WANG Ju-feng;MENG Wei-hang(State Grid Jining Power Supply Company,Jining 272111,China;Guangxi University,Nanning 530004,China;Guangxi Electric Power Transmission and Distribution Network Lightning Protection Engineering Research Center,Nanning 530004,China)

机构地区：[1]国网济宁供电公司,山东济宁272111 [2]广西大学,广西南宁530004 [3]广西电力输配网防雷工程技术研究中心,广西南宁530004

出　　处：《通信电源技术》2019年第10期77-80,共4页Telecom Power Technology

摘　　要：电力系统稳定安全的运行是国民经济发展的重要保证,而雷击跳闸事故则对其产生严重影响。实际上,耐雷水平主要受接地电阻的影响,但高土壤电阻率地区耐雷设计水平普遍不足,且降阻方式繁琐、降阻程度不明显。喷射气体灭弧装置是一种具有主动灭弧能力的新型并联间隙。此防雷装置的防雷能力不受其他条件如土壤电阻率高等因素的影响。基于此,首先通过实验得到其有效灭弧率,又基于规程法建立了在安装喷体灭弧装置情况下的雷击跳闸率计算模型,最后选取典型的220kV线路进行合理验算,为将来工程安装提供依据。With the rapid development of national economy,the stable and safe operation of power system is an important guarantee for the development of national economy.Lightning tripping accident has a serious impact on it,and the lightning resistance level is mainly affected by grounding resistance.The lightning resistance design level in high soil resistivity areas is generally insufficient,and the way of reducing resistance is cumbersome and the degree of reducing resistance is not obvious. Jet gas arc extinguishing device is a new type of parallel clearance with active arc extinguishing capability.The lightning protection capability of this lightning protection device is not affected by other factors such as high soil resistivity.On this basis, we first get its effective arc extinguishing rate through experiments,and then establish a calculation model of lightning tripping rate under the condition of installing spray gas arc extinguishing device based on the regulation method.Finally,the 220 kV transmission line is checked reasonably to provide basis for future engineering installation.

关 键 词：高土壤电阻率 防雷间隙 喷射气流 主动灭弧 雷击跳闸率 计算模型 

分 类 号：TM863[电气工程—高电压与绝缘技术]