一种观测空气电弧开断过程的激光补光成像技术  

Laser Compensating Light Technology for Observing Arc and Electrode Motion

作　　者：邢刚 屈建宇[2] 原帅[2] 李兴文[2] 

机构地区：[1]神华国能(神东电力)集团,北京100033 [2]西安交通大学电力设备电气绝缘国家重点试验室,陕西西安710049

出　　处：《电器与能效管理技术》2016年第15期64-68,共5页Electrical & Energy Management Technology

摘　　要：搭建了基于连续激光器和高速摄影仪的激光补光成像系统,旨在解决由于电弧光照强度过高造成电极区域成像困难的问题。利用成像系统,结合高压探头和罗氏线圈,研究了断路器的电弧开断过程。针对一小型断路器,获得了电弧开断过程中电弧形态演变和动触头运动图像,同时还从图像中测量出触头开距时间曲线发现,动触头回落达到了最大开距的1/3,而且动触头回落是引起动静触头间隙背后击穿的一个重要原因。In order to overcome the d iffic u lty o f im aging both the arc and electrode in the co n d itio n o f high arclig h t in te n s itie s , th is paper introduce d an im aging system w ith laser com pensating lig h t technology. C ontacts, arcrunners and arc chutes are illu m in a te d con tinuou sly by an expanded laser b e a m ,w h ic h makes it possible to capturearc and electrodes m otion sim ultaneously. The in te rru p tin g process o f a c irc u it breaker was investigated by using thisim aging system ,a high voltage probe and Rogowski coils. A rc evo lu tion and contact m otion were cle a rly captured inthe fra m e s,a n d the curve o f movable contact tra vel versus tim e was also obtained. It is found that the m ovablecontact rebounds seriously about 1 /3 o f the stroke le n g th ,w h ic h is the m ain reason o f back com m utation between theseparated contacts.

关 键 词：补光成像技术 连续激光 电弧演变 电弧开断 电弧电极相互作用 背后击穿 

分 类 号：TM501.2[电气工程—电器]