开关设备
电场
电弧闪光
表面电荷
材料科学
绝缘体(电)
电荷密度
电压
六氟化硫
电气工程
电极
高压
复合材料
化学
物理
工程类
有机化学
物理化学
量子力学
作者
Shaocong Wu,Hao Xu,Xuanning Zhang,Yanyu Liang,Yuming Shao,Mohammed Shaiea,Youping Tu,Yongsheng Xu
出处
期刊:Physica Scripta
[IOP Publishing]
日期:2022-06-10
卷期号:97 (7): 072001-072001
被引量:4
标识
DOI:10.1088/1402-4896/ac6f25
摘要
Abstract Under DC voltage, the interface charge of the spacer in gas-insulated metal-enclosed transmission lines (GIL) and gas-insulated metal-enclosed switchgear (GIS) is prone to accumulate, and the charge is an important factor to induce surface flashover. On different spacers, the distribution of the electric field can be varied and affect the flashover greatly. This paper concentrates on the surface flashover induced by solid-gas interface charge accumulation in DC GIL/GIS. The electric field distribution of the real insulator and the electrode structure commonly used in research are analyzed and summarized into two distribution forms: the tangential-component dominant type and the hybrid type. According to the electric field distribution forms, how the density distribution and electric field distortion of interface charge influence the flashover voltage of spacer is reviewed, and the influence of metal particles on charge and surface flashover is reviewed as well. Efforts to understand the mechanism of the surface flashover have alse been tracked.
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