触头片结构对新型带铁心的杯状纵磁真空灭弧室磁场影响仿真

doi:10.19595/j.cnki.1000-6753.tces.170700

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Abstract

Design of the contacts structure in the vacuum interrupter has an important influence on their internal electromagnetic field distribution. In order to do researches on the influence of contact plates structure on the electromagnetic field distribution, a new type of cup-shaped axial magnetic field (AMF) vacuum interrupter with iron core is used. In this study, Ansoft Maxwell software is adopted to simulate the electromagnetic field characteristics in the new vacuum interrupter. Influences of slot length, the slot deflection angle, the diameter of the center hole of contact plates, and the depth of the hole on the magnetic field distribution are got by utilizing the software . Besides, Magnetic induction intensity distribution at the time of peak current and over zero current are obtained. From the results we can see: The slot length, deflection angle and the center process aperture of contact plate have much influence on the magnetic field distribution while the aperture depth has little influence on the magnetic field distribution. The length of the slot and the increase of the center process aperture can reduce the magnetic induction intensity distribution. The increase of the slot deflection angle of the contact plate will increase the current intensity at the time of current peak and the current zero crossing, and the optimal angle is 25°. The contact plate slot and center open hole can reduce the residual magnetic field strength when the current is zero.

Key words： Vacuum interrupter contact plate geometry electromagnetic field distribution magnetic induction

Received: 24 May 2017 Published: 13 June 2018

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TM561

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	Dong Huajun
	Si Mingyue
	Yingjie
	Li Chunxiao
	Guo Fangzhun

Cite this article:

Dong Huajun,Si Mingyue,Yingjie等. Influence of Contact Plate Structure on Magnetic Field Strength of a New Type of Cup-Shaped Axial Magnetic Field Vacuum Interrupter with Iron Core[J]. Transactions of China Electrotechnical Society, 2018, 33(11): 2448-2455.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.170700 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I11/2448

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