Title :
Simulation of breakdown in Cu-Cr metal vapor after vacuum arc extinctions
Author :
Zhenxing Wang ; Yunbo Tian ; Yingsan Geng ; Zhiyuan Liu
Author_Institution :
State Key Lab. of Electr. Insulation & Power Equip., Xi´an Jiaotong Univ., Xi´an, China
Abstract :
Metal vapor has a significant influence on dielectric recovery behaviors after interrupting a high vacuum arc. The objective of this paper is to study breakdowns in copper, chromium and copper-chromium vapors employing the PIC-MCC method. A 2d model with a given DC voltage is applied to study the breakdown processes in the metal vapor after vacuum arc extinctions taking into account thermal-field emission, secondary electron emission, plasma and neutral transport. The results confirm that the breakdown voltage decreased with the increase of the surface temperature. At the same surface temperature, the breakdown voltages for different metal vapors follow the trend of copper> chromium > copper-chromium.
Keywords :
Monte Carlo methods; chromium; copper; vacuum arcs; vacuum breakdown; vacuum interrupters; 2D model; Cu-Cr; PIC-MCC method; breakdown voltage; copper-chromium metal vapors; dielectric recovery behaviors; high vacuum arc interruption; neutral transport; plasma transport; secondary electron emission; surface temperature; thermal-field emission; vacuum arc extinctions; Chromium; Copper; Electric breakdown; Electron emission; Plasma temperature; Surface treatment;
Conference_Titel :
Electric Power Equipment - Switching Technology (ICEPE-ST), 2013 2nd International Conference on
Conference_Location :
Matsue
DOI :
10.1109/ICEPE-ST.2013.6804311
