The Electric Discharge Detection Method in the Low Vacuum Region of Vacuum Interrupter

被引:3
作者
Abe, Junichi [1 ]
Tanabe, Tomoko [2 ]
Yano, Tomotaka [2 ]
Yoshida, Satoru [3 ]
Inoue, Naoaki [3 ]
机构
[1] Mitsubishi Electr Corp, Adv Technol R&D Ctr, Switch Device Grp, Dept Elect Syst Engn, Tokyo, Japan
[2] Mitsubishi Electr Corp, Adv Technol R&D Ctr, Tokyo, Japan
[3] Mitsubishi Electr Corp, Power Distribut Syst Ctr, Tokyo, Japan
关键词
vacuum circuit breaker; vacuum switch tube; vacuum discharge; vacuum-insulation; condition based maintenance; antenna;
D O I
10.1002/ecj.11922
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The vacuum circuit breaker (VCB) achieves the high current interrupting capability in the pressure lower than 10 Pa to 5 Pa. When gas pressure increases, the breakdown voltage of a VCB decreases according to Paschen's law, and in the case of small leak, the partial discharge will occur in the VCB and the high frequency electromagnetic waves are radiated. So, we have developed the partial discharge detection system using an antenna with the region from 200 MHz to 300 MHz placed inside the VCB. However, if the partial discharge occurs outside the VCB, the detection system leads to misdetection as the partial discharge inside the VCB. In order to improve the performance of partial discharge detection, the outputs of antenna voltages inside and outside the VCB are investigated.
引用
收藏
页码:59 / 66
页数:8
相关论文
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