小型断路器灭弧室的仿真与实验分析  

Simulation and Experimental Analysis of Arc Extinguish Chamber in Miniature Circuit Breaker

作　　者：孙志强[1] 吴翊[1] 荣命哲[1] 杨飞[1] 郭瑾[1] 

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,陕西西安710049

出　　处：《低压电器》2010年第3期1-3,22,共4页Low Voltage Apparatus

基　　金：国家自然科学基金项目资助(50537050);国家杰出青年科学基金项目资助(50527222)

摘　　要：针对某小型断路器产品的灭弧室,建立了三维电弧仿真模型并进行了动态特性仿真,仿真结果揭示了灭弧室内电弧的运动规律,电弧弧根从动触头到跑弧道的转移,电弧沿跑弧道向栅片运动并被铁质栅片切割的过程。在此过程中,电弧多次出现背后击穿,电弧在跑弧道拐点长时间停滞,使该位置的电极被强烈烧蚀。此现象得到了实验的验证,同时仿真得到的电弧电压和电流与实验结果较为一致。For a certain product of miniature circuit breakers,a 3D arc extinguish chamber model was built and the dynamic characteristic simulation was calculated.The simulation results revealed the movement rule of arc in the chamber.Firstly the arc roots transferred from contacts to arc runners,then the arc moved along runners under the effect of the ferromagnetic plate.Finally,the arc column was divided into several pieces by the ferromagnetic splitters.Several back commutations were observed in the process of current interruption.The arc root stagnated on the turning point of runner and caused strong ablation of electrodes.The phenomenon was validated by experimental results.Moreover,the arc voltage and current of simulation were consistent with experimental results.

关 键 词：灭弧室 电弧 分断 仿真 

分 类 号：TM561[电气工程—电器]