基于链式的爆炸气流场耦合电弧动态模型  

A Dynamic Chain Arc Model for Coupling of Explosion Airflow Field

作　　者：王巨丰[1] 黄志都[2] 王嬿蕾[1] 陈智勇[2] 潘坤年[1] 

机构地区：[1]广西大学电气工程学院,广西壮族自治区南宁市530004 [2]广西电网公司电力科学研究院,广西壮族自治区南宁市530023

出　　处：《中国电机工程学报》2012年第7期154-160,204,共7页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50867002);Project Supported by National Natural Science Foundation of China(50867002)

摘　　要：为研究大电场条件下有效熄灭电弧的优良方法,在开放空间下,考虑爆炸产生的冲击波及强烈气流耦合电磁场等因素的影响,基于电弧链式思想和经典激波理论分析电弧在爆炸气流影响下的受力情况,推导出电弧运动速度控制方程。在此基础上,结合能量平衡方程及热交换原理,建立耦合场的电弧模型。通过有限差分法求解模型,分析气流耦合电磁场下电弧熄灭的运动过程和物理特性变化,并得出电弧状态相关参数(温度、电导率等)和熄灭时间的特性。试验结果表明电弧熄灭效果具有工程应用价值。In order to study the excellent method to extinguish the arc effectively under the strong electric field, movement governing equation of the electric arc was inferred in the open space by considering the effects of the shock-wave produced by detonation and the electromagnetic field coupling air current. Meanwhile, the force situation of electric are was analyzed based on the electric arc chain idea and the classical shock-wave theory. Energy balance equation and heat change principle were also combined to establish the coupled field electric arc model. The model was solved with the finite differential method to simulate the state of arc under the electromagnetic field coupling air current and then acquire the relevant parameters （temperature, conductivity, etc.） of arc states and electric arc extinguishment time response. Finally, the experimental results indicated that the electric arc extinguishment effect has values of engineering application.

关 键 词：电弧 电弧薄层 爆炸气流 链式模型 温度分布 

分 类 号：TM50[电气工程—电器]