Nonsustained disruptive discharges in vacuum interrupters
Nonsustained disruptive discharges in vacuum interrupters
复制标题
真空灭弧室中的非持续破坏性放电
DOI：
10.1109/deiv.2000.879035
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
M. Leusenkamp
中科院分区：
文献类型：
--
作者：
M. Leusenkamp
许多研究人员研究了真空灭弧室（维斯）电流中断后的击穿现象，但只有少数人区分了工频电流和与灭弧室局部（杂散）电容相关的高频电流流动后的击穿。后者被称为非持续性破坏性放电（NSDD），实际上现在也被国际电工委员会（IEC）认可。到目前为止，只有短路测试联络（STL）在其用于解释IEC出版物60056（1987）的指南中提到了这种现象。他们将NSDD的发生解释为VI中显示出一些痛苦的迹象，并接受在整个系列测试任务期间最多发生三次这种现象。在本文中，讨论了这一问题，并深入研究了迄今为止对NSDD的了解。对这种现象的众所周知的解释被讨论为，例如，解决了驱动机构的机械冲击，该机械冲击可以从电极或内壁释放微粒，但也解决了可以在文献中找到的其它解释。最后，实用的重要性发生的NSDDs的公用电网进行了讨论。
Many researchers have studied breakdown phenomena after current interruption of vacuum interrupters (VIs), but only a few made a distinction between breakdowns followed by the flow of the power-frequency current and a high-frequency current flow which is related to (stray) capacitance local to the interrupter. The latter is called a nonsustained disruptive discharge (NSDD) which in fact is now also being recognised by the International Electrotechnical Commission (IEC). Up till now, only the Short-Circuit Testing Liaison (STL) mentioned this phenomenon in its guide used for interpretation of IEC-publication 60056(1987). They interpret the occurrence of a NSDD as showing some signs of distress in the VI and accepted the occurrence of this phenomenon to a maximum of three during an entire series of test duties. In this paper this matter is discussed and looked deeper into detail what is known about NSDDs until today. Well known explanations for this phenomenon are discussed as, e.g., mechanical shocks of the driving mechanism which could release micro-particles from the electrodes or inner walls but also other explanations, which can be found in literature, are addressed. Finally, the practical importance of an occurrence of a NSDDs on the utility grid is discussed.