真空开关的触发失效与主电极烧蚀特性研究  

Investigation to Trigger Failure and Main Electrode Ablation of Vacuum Switch

作　　者：吴昊 周志成 吉亚民 刘洋 陈娜 孙秋芹 马勇 

机构地区：[1]江苏省电力公司电力科学研究院,南京211103 [2]江苏省电力公司检修分公司,南京211102

出　　处：《高压电器》2015年第1期115-120,共6页High Voltage Apparatus

摘　　要：通过对真空开关的导通与失效机理进行研究,将其分为触发机构和主电极两个部分。关于触发机构的失效机理,主要研究绝缘电阻、触发电流和主放电电流大小的变化对触发极烧蚀的影响;用真空电弧的机理分析主电极烧蚀,对导通过程中电弧的发展进行仿真,了解主电极烧蚀特性。通过对真空开关的触发失效和主电极烧蚀特性进行研究,更好地了解真空开关的导通机理。The conduction and failure mechanisms of a vacuum switch are analyzed by dividing the switch into a trigger mechanism and a main electrode. To understand the failure mechanism of the trigger electrode, the effects of insulation resistance, triggering current and main discharge current on trigger electrode ablation are investigated. The main electrode ablation is analyzed with vacuum arc theory, and the arc development is simulated to observe the main electrode ablation characteristics. The investigation to the trigger failure and the main electrode ablation characteristics can help to deeply understand the conduction mechanism of the vacuum switch.

关 键 词：真空开关 触发失效 烧蚀 寿命 

分 类 号：TM564[电气工程—电器]