延弧回路参数对延弧效果影响的分析 

李伟昭，刘祥云，李威 
中机国际(西安)技术发展有限公司，陕西 西安 710054 
 

摘 要：介绍了RC延弧回路的工作原理，分析了延弧回路各参数对电弧电流过零点斜率、延弧电流峰值大小、延弧电流峰值后时间常数的影响。利用Matlab软件计算分析可知，电弧电流过零点斜率受延弧电容的影响可以忽略，延弧电流峰值大小主要由充电电压与延弧电阻决定，峰值后时间常数主要决定于延弧电阻和延弧电容。根据各因素的影响程度，结合实际延弧回路参数，即可优化延弧效果。
关键词：延弧回路；RC回路；电流上升率
中图分类号：TM835 文献标识码：A 文章编号：1007-3175(2015)08-0027-03

Analysis of Arc Prolong Circuit Parameter Impacts on Arc Prolong Results 

LI Wei-zhao, LIU Xiang-yun, LI Wei 
CNME International Co., Ltd, Xi’an 710054, China 
 

Abstract: Introduction was made to the working principle of RC arc prolong circuit. This paper analyzed the impacts of arc prolong circuit parameters on the slope of arc current passing through zero point, the peak value of arc prolong current and the time constant after the arc prolong peak value. The software Matlab calculation shows that the impacts of arc prolong capacitance on the slope of arc current passing through zero point could be ignored. The peak value of arc prolong current mainly depends on charging voltage and arc prolong resistance and the time constant after the arc prolong peak value mainly depends on arc prolong resistance and capacitance. According to the influence degree of various factors, combined with actual arc prolong circuit parameters, the effectiveness of arc prolong could be optimized.
Key words: arc prolong circuit; RC circuit; current increase rate

参考文献
[1] 徐国政，张节容，钱家骊，等.高压断路器原理和应用[M].北京：清华大学出版社，2000.
[2] 邱关源.电路[M].5版.北京：高等教育出版社，2006.
[3] 李庆余，李玉春，杨海芳，等.合成试验的延弧回路设计及延弧效能研究[J].华通技术，2006(2)：11-15.
[4] 李炜，杨海芳，吴盛刚.网络合成试验回路及实施中的一些问题[J].华通技术，2005(3)：11-15.
[5] GB/T 4473-2008 高压交流断路器的合成试验[S].
[6] IEC 62271-101：2006 High-Voltage Switchgear and Controlgear-Part101：Synthetic Testing[S].