Fundamental research of uniform vacuum arc control by magnetic field and its application to VCB

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI:10.1109/DEIV.2016.7764004

Y. Niwa, N. Asari, W. Sakaguchi, A. Daibo, Y. Sekimori

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引用次数: 3

Abstract

The vacuum arc behavior and high current interruption ability of electrodes applied in the uniform vacuum arc control method are presented. The axial magnetic field (AMF) distribution of this method is unlike that of the conventional AMF distribution. For extremely high interruption current, the arc of the conventional AMF electrode concentrates, causing local heating of the electrode, but the arc of this method diffuses over the whole contact area thus avoiding local heating. The interruption characteristic is investigated. The relationship between the arc energy and the electrical field after the current zero was estimated. The relation among the electrode structure, the arc behavior and the magnetic field distribution between the electrodes is investigated. The vacuum interrupter with this vacuum arc control method is applied for Solid Insulated Switchgear (SIS). These vacuum interrupters are demonstrated to be higher interruption ability than the conventional AMF vacuum interrupter.

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磁场控制均匀真空电弧的基础研究及其在真空断路器中的应用

介绍了均匀真空电弧控制方法中电极的真空电弧特性和高电流中断能力。该方法的轴向磁场分布与传统的轴向磁场分布不同。对于极高的中断电流，传统AMF电极的电弧集中，引起电极局部发热，而该方法的电弧扩散到整个接触区域，从而避免了局部发热。对其中断特性进行了研究。估计了电流为零后电弧能量与电场的关系。研究了电极结构、电弧行为与电极间磁场分布的关系。采用这种真空电弧控制方法的真空灭弧器应用于固体绝缘开关设备。实验证明，该真空灭弧器比传统的AMF真空灭弧器具有更高的中断能力。

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2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)

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