Single-pulsed Surface Flashover Hold-off Voltage of Electrode Geometry in Vacuum

CHENG Yan-lin; XIANG Wei; LEI Yang-jun

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Single-pulsed Surface Flashover Hold-off Voltage of Electrode Geometry in Vacuum

更新时间：2025-04-26

- Single-pulsed Surface Flashover Hold-off Voltage of Electrode Geometry in Vacuum
- High VoltageApparatus Vol. 45, Issue 3, Pages: 11-14(2009)
- 作者机构：
  
  中国工程物理研究院电子工程研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM854
- Published：2009
- 稿件说明：
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[1]程焰林,向伟,雷杨俊.真空中高压电极结构的单次脉冲沿面闪络耐压研究[J].高压电器,2009,45(03):11-14.

CHENG Yan-lin, XIANG Wei, LEI Yang-jun. Single-pulsed Surface Flashover Hold-off Voltage of Electrode Geometry in Vacuum[J]. High voltageapparatus, 2009, 45(3): 11-14.
[1]程焰林,向伟,雷杨俊.真空中高压电极结构的单次脉冲沿面闪络耐压研究[J].高压电器,2009,45(03):11-14. DOI：

CHENG Yan-lin, XIANG Wei, LEI Yang-jun. Single-pulsed Surface Flashover Hold-off Voltage of Electrode Geometry in Vacuum[J]. High voltageapparatus, 2009, 45(3): 11-14. DOI：

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%。

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 the concave electrode compared to the plate electrode.

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