35kV配电线路防雷击断线措施的应用研究  

Application of the Measures against Lightning-Caused Breaking of 35kV Distribution Line

作　　者：黄石[1] 卫志农[1] 吴国梁[2] 王华芳[2] 靳宏伟[2] 

机构地区：[1]河海大学能源与电气学院,南京210098 [2]南京供电公司,南京210013

出　　处：《华东电力》2012年第9期1571-1575,共5页East China Electric Power

基　　金：国家自然科学基金(50877024;51107032;61104045)~~

摘　　要：介绍了雷击断线机理。应用电磁暂态计算程序对35 kV配电线路架设避雷线、安装过电压保护器的耐雷水平进行了分析计算。具体分析了接地电阻对架设避雷线的耐雷水平的影响,不同安装密度不同冲击电阻值下的过电压保护器的耐雷水平。结合线路架设避雷线、安装过电压保护器的改造难易度比较,提出上述两种防雷措施在配电线路的具体应用方案。In this paper,the mechanism of lightning stroke breakage is introduced.Then by using electromagnetic transient program（EMTP）,the lightning withstand level（LWL） of 35kV distribution line,installed with overhead ground wire and over-voltage protector,is calculated and analyzed,with a focus on the impact of grounding resistance on the LWL of overhead ground wire and the LWL of over-voltage protector under different installing density and different impulse resistance value.By comparing the renovation expenses and difficulty between installing overhead ground wire and over-voltage protector,the specific scheme is presented to apply these two lightning protection measures in distribution lines.

关 键 词：过电压保护器 避雷线 耐雷水平 35KV配电线路 

分 类 号：TM726[电气工程—电力系统及自动化]