摘要详情

ID / 提交时间

196 / 2024-04-15 22:56:28

标题

Improvement of surface flashover voltage of Vacuum Interrupter by surface coating

关键字

vacuum surface flashover, surface coating, field emission, vacuum interrupter

主题及专题

1)Emerging HV Switching Technologies

状态

终稿

作者

Minglu Feng / Xi’an Jiaotong University；State key laboratory of electrical insualtion and power equipment

Haomin Li / Xi’an Jiaotong University；State Key Laboratory of Electrical Insulation and Power Equipment

Jingshi Wang / State Key Laboratory of Electrical Insulation and Power Equipment；Xi‘an Jiaotong University

zhiyuan liu / State Key Laboratory of Electrical Insulation and Power Equipment； Xi’an Jiaotong University

Yingsan Geng / Xi’an Jiaotong University；State Key Laboratory of Electric Power Equipment

Jianhua Wang / Xi'an Jiaotong University

摘要

Surface flashover phenomenon prevents vacuum interrupter from applying to higher voltage level. The surface flashover phenomenon in the vacuum interrupter begins at the shielding ring. At present, only through the geometric shape optimization of the shielding ring can not break through the insulation bottleneck of the high-voltage level vacuum interrupter. This paper innovatively proposes to apply dielectric coating on the end of the shielding ring to improve the dielectric strength of the vacuum interrupter. Flashover tests were carried out for samples changing the thickness of the dielectric coating and the roughness of the shield ring. The voltage and cathode current waveforms were measured under a positive standard lighting impulse. The field emission current is filtered out from the cathode current. Detailed results and analysis will be shown in the following full text.