Motion Characteristics and Partial Discharge Characteristics of Submillimeter Metal Particles on the Surface of AC GIS Spacer

被引：0

作者：

Xu Y. ^{[1
]}

Liu W. ^{[2
]}

Chen W. ^{[3
]}

Li X. ^{[2
]}

Yin Y. ^{[4
]}

Bi J. ^{[4
]}

Cui B. ^{[4
]}

Gong Y. ^{[4
]}

机构：

[1] School of Electrical & Electronic Engineering, North China Electric Power University, Changping District, Beijing

[2] Department of Electrical Engineering, Tsinghua University, Haidian District, Beijing

[3] State Grid Corporation of China, Xicheng District, Beijing

[4] China Electric Power Research Institute, Haidian District, Beijing

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2019年 / 39卷 / 14期

基金：

国家重点研发计划;

关键词：

Gas insulated switchgear (GIS); Motion characteristics; Partial discharge characteristics; Submillimeter metal particles; Surface of GIS spacer; Ultra-high frequency test;

D O I：

10.13334/j.0258-8013.pcsee.190555

中图分类号：

学科分类号：

摘要：

The spacer flashover in gas insulated switchgear (GIS) is a serious threat to power supply safety. The cause of failure is usually attributed to the metal particles on the surface of the GIS spacer. The size of the metal particles in the GIS is mainly submillimeter. The partial discharge characteristics and motion characteristics of the particles are the problems that cannot be avoided by analyzing the flashover incentives of GIS spacers. However, due to the difficulty of research, the partial discharge characteristics and motion characteristics of submillimeter metal particles on the surface of GIS spacers have not been grasp. Therefore, based on the previous research, a comprehensive PD measurement system and motion observation system with sensitivity up to 0.02pC were established. The motion characteristics and partial discharge characteristics of single, two and large number submillimeter metal particles on the surface of GIS spacer were obtained. Finite element method and electromagnetic field theory were used to analyze the motion mechanism and partial discharge mechanism of submillimeter metal particles on the surface of GIS spacers, and the relationship between the two was revealed. Finally, the failure problems of ultra-high frequency on-site detection technology on detecting submillimeter metal particles on the surface of spacers in GIS were discussed. © 2019 Chin. Soc. for Elec. Eng.

引用

页码：4315 / 4324

页数：9

共 25 条

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