摘要
分析研究了SF_6/N_2混合气体电弧阻塞现象。结果显示,相同电弧电流下,SF_6/N_2混合气体弧柱和热边界区直径分别大于SF_6气体,在电流半波中阻塞时间延长。此外,混合气体电弧能量密度高于SF_6,而弧柱焓流率则低于SF_6的相应值,因而在电流峰值附近更易造成能量在上游的聚积,使电弧对喷口的阻塞作用加强,影响灭弧与介质恢复过程。为了提高混合气体灭弧室的气吹灭弧能力,应对灭弧室结构参数和其他工作条件重新予以调整和确定。
The behaviour of arc clogging with the medium of SF6/N2 mixtures has been investigated,The diameters of both arc column and the thermal boundary region of arc are larger for SF6/N2 than that for SF4.This results in that the duration of arc clogging is longer for SF6/N2 in the current cycle.Also there are a large value of ph and a less value of pob.for SF6/N2.The effect of arc clogging are strengthened further and might be harmful to the arc extinction under this condition.In order to increase the interrupting capability of GCB with SF6/N2 mixtures the configuration of arc chamber should be modified.
出处
《高压电器》
CAS
CSCD
北大核心
1993年第6期19-22,共4页
High Voltage Apparatus
关键词
混合气体
六氟化硫
电弧
mixtures of gases,SF6,electrical arc,clogging,research,arc chamber
