Measurement of Electrode Surface Temperature and Post-Arc Current in Vacuum Interrupter

IF 1.3 4区 物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS
Akira Daibo;Yoshimitsu Niwa;Yo Sasaki;Takuya Saito;Takeshi Yoshida
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引用次数: 0

Abstract

In vacuum interrupters, plasma remains between the electrodes after the current zero because of arcs generated by the interruption of short-circuit current. This residual plasma consisting of ions, electrons, and metal vapor affects the insulation recovery process after the short-circuit current interruption. The ion and electron densities can be attributed to the post-arc current and the electrode surface temperature. Therefore, direct measurement of the post-arc current and electrode surface temperature is crucial for a fundamental understanding of the insulation recovery process after the short-circuit current interruption. In this study, a prototype spiral electrode was mounted in a vacuum chamber, and the electrode surface temperature and the post-arc current were measured. The electrode was made of Cu-Cr material, and the interruption current above 10–24 kArms was applied. The electrode surface temperature was measured two-dimensionally using a two-color pyrometer method. The melting area increased with an increase in the interruption current above 20 kArms. The post-arc current and its charge also increased with increasing the interruption current, but they did not increase as dramatically as the melting area.
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来源期刊
IEEE Transactions on Plasma Science
IEEE Transactions on Plasma Science 物理-物理:流体与等离子体
CiteScore
3.00
自引率
20.00%
发文量
538
审稿时长
3.8 months
期刊介绍: The scope covers all aspects of the theory and application of plasma science. It includes the following areas: magnetohydrodynamics; thermionics and plasma diodes; basic plasma phenomena; gaseous electronics; microwave/plasma interaction; electron, ion, and plasma sources; space plasmas; intense electron and ion beams; laser-plasma interactions; plasma diagnostics; plasma chemistry and processing; solid-state plasmas; plasma heating; plasma for controlled fusion research; high energy density plasmas; industrial/commercial applications of plasma physics; plasma waves and instabilities; and high power microwave and submillimeter wave generation.
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