文档介绍：第卷第期
45 3
年年月月第卷第期
2009 2009 66 High Voltage Apparatus 45Jun. 20093 ·11 ·
真空中高压电极结构的单次脉冲沿面闪络耐压研究
程焰林向伟雷杨俊
, ,
中国工程物理研究院电子工程研究所四川绵阳
( , 621900)
摘要电极作为高压绝缘子的加载对象在电真空器件中有着至关重要的作用合理的电极结构设计可以有效地提高高压器件
: , ,
的沿面耐压笔者从实际的应用出发针对几种新型电极结构进行了电场仿真和实验耐压实验给出了不同电极情况下氧化铝
。, , ,
陶瓷的耐压结果结果表明新型电极结构能有效减弱氧化铝陶瓷三结合处的电场强度并在一定程度上提高绝缘子耐压能力
。, , ,
相对于平板电极其平均最高耐压提高了
, 55%。
关键词氧化铝陶瓷真空单次脉冲电极结构闪络耐压
: ; ; ; ;
中图分类号文献标志码文章编号
: TM854 : A :1001-1609(2009)03-0011-04
Single-pulsed Surface Flashover Hold-off Voltage of Electrode Geometry in Vacuum
CHENG Yan-lin, XIANG Wei, LEI Yang-jun
(Institute of Electronic Engineering of CAEP, Mianyang 621900, China)
Abstract: The electrode which is usually used as the carrier of the high-voltage insulator is very important for the vacuum
electronic devices. The reasonable design of the electrode geometry can considerably improve the surface flashover hold-off
voltage of the insulator. In this paper, the influence of several geometries on the electric field distribution at the triple
junction was simulated and experimentally studied. The single pulsed flashover hold-off voltage tests of cylindrical alumina
insulators in vacuum were conducted. The results indicate that these geometries weaken the electric field at the triple
junction, and the average hold-off voltage limit of the alumina ceramics is increased by 55% with t