刚性吊弦尼龙护套在电分相处击穿机理分析及解决措施  

Analysis of Breakdown Mechanism and Solutions for Rigid Dropper Nylon Sheath at Phase Separation

作　　者：李晓军 吴进桐 LI Xiaojun;WU Jintong

机构地区：[1]中铁高铁电气装备股份有限公司

出　　处：《电气化铁道》2023年第1期29-32,共4页Electric Railway

摘　　要：目前国内使用的刚性吊弦的尼龙护套在关节式电分相处出现了电弧击穿现象,同时承力索也有被电弧烧蚀痕迹。本文通过对电弧产生机理、尼龙护套击穿的成因进行分析,试验定量测量击穿护套的电弧电压,并针对既有线路和新建线路提出切实可行的解决方案。At present,the phenomenon of breakdown caused by arcing has been occurred for the nylon sheaths of rigid droppers at phase separations of electrified railways in China,and the messenger wire has also been burned by the arcing.The paper analyzes the mechanism of arc generation and the cause of breakdown of nylon sheath,tests and quantitatively measures the arc voltage of nylon sheath breakdown,and proposes practical solutions for the existing and newly constructed railway lines.

关 键 词：关节式电分相 过电压 PA66尼龙护套 击穿 

分 类 号：U225.4[交通运输工程—道路与铁道工程]