高压电器2017，Vol.53Issue(3)：69-75,7.DOI:10.13296/j.1001-1609.hva.2017.03.011
126kV真空灭弧室3/4匝纵向磁场触头磁场特性及电弧形态研究
Research on Magnetic Field Characteristics and Arc Behaviors of 3/4 Coil-type AMF Contact for 126 kV Vacuum Interrupter
张雪敏 1王晓琴 1刘易雄 1薛从军 1关琦 1毕迎华1
作者信息
- 1. 天津平高智能电气有限公司,天津300300
- 折叠
摘要
Abstract
The objective of this paper is to determine a 3/4 coil-type axial magnetic field (AMF)contact used in 126 kV vacuum interrupters.The characteristics of magnetic field and the behaviors of vacuum arc are studied by means of electromagnetic simulation and arcing experiment.The AMF distribution and resistance are compared for eight contact plate slots positions and locations,diversion row.Two types of slot positions without the diversion row and one type structure with the diversion row are tested in the arcing experiment.The slot positions of contact type 2 and contact type 3 are left and right,respectively.Arc current is 40 kA(rms).Arc duration in first current half-wave is set as 9 ms.The simulation and experiment results show that the AMF is higher and more uniform for contact type 3,and it has higher diffuse arc mode duration before current zero.In the second half-wave peak current,vacuum arc is more intense between the contacts with the diversion row,which is in the concentrated mode.The anode jets begin to form and it reach the cathode.The experiment and simulation results show that the 3/4 coil-type contact used in 126 kV vacuum interrupter is determined as contact type 3 without the diversion row,in which the slot position is right and the installation location is that the upper contact corresponds to the lower contact.关键词
真空灭弧室/真空电弧/触头/纵向磁场Key words
vacuum interrupter/vacuum arc/electrode/axial magnetic field引用本文复制引用
张雪敏,王晓琴,刘易雄,薛从军,关琦,毕迎华..126kV真空灭弧室3/4匝纵向磁场触头磁场特性及电弧形态研究[J].高压电器,2017,53(3):69-75,7.
