12 kV户外跌落式喷射熔断器开断试验失败原因分析  

Failure Analysis of 12 kV Drop-Out Spray Fuse Breaking Test

作　　者：王金辉 王飞鸣 赵义松 郎福成 金鑫 WANG Jinhui;WANG Feiming;ZHAO Yisong;LANG Fucheng;JIN Xin(Liaoning Dongke Power Co.,Ltd.,Shenyang,Liaoning 110179,China;Electric Power Research Institute of State Grid Liaoning Electric Power Co.,Ltd.,Shenyang,Liaoning 110006,China;State Grid High Voltage and Large Current Laboratory,Shenyang,Liaoning 110006,China)

机构地区：[1]辽宁东科电力有限公司,辽宁沈阳110179 [2]国网辽宁省电力有限公司电力科学研究院,辽宁沈阳110006 [3]国网高电压强电流实验室,辽宁沈阳110006

出　　处：《东北电力技术》2020年第9期39-41,44,共4页Northeast Electric Power Technology

基　　金：辽宁东科电力有限公司科技项目(1913)。

摘　　要：对30支户外跌落式喷射熔断器(以下简称熔断器)进行开断试验方式1“零角度合闸试验”,开断均失败,通过对开断失败原因分析,发现除个别产品存在质量缺陷外,主要原因为熔断器缺少重要部件“电弧缩短杆”。建议对安装于非常靠近主配电站变压器以及配电网线路分支线上的熔断器合理配置电弧缩短杆,及时排除隐患,在发生大电流短路故障时能够可靠开断故障线路,保障系统安全。研究结果可为国家电网有限公司物资采购提供技术支持。Through the analysis of 30 outdoor drop-out spray fuses,it is found that apart from the defects in the quality of individual products,the main reason for the failure of the fuse is the outdoor drop-out spray fuses lacking the important component“arc shortening rod”.Therefore,in order to eliminate hidden dangers in a timely manner,it is recommended that the outdoor drop-out spray fuses installed near the main distribution transformer and distribution line branch lines be reasonably equipped with arc shortening rods.When a large current short-circuit fault occurs,it can reliably break the faulty line and ensure the safety of the system.The research results provide technical support for the procurement of materials by state grid Co.Ltd.

关 键 词：配电网 户外跌落式喷射熔断器 开断试验 电弧缩短杆 

分 类 号：TM727[电气工程—电力系统及自动化]