喷口电弧动态特性的相似理论分析  

ANALYSIS OF DYNAMIC CHARACTERISTICS OF NOZZLE ARC BY SIMILARITY THEORY

作　　者：林莘[1] 王其平[1] 

机构地区：[1]西安交通大学电气工程系

出　　处：《西安交通大学学报》1990年第1期9-16,共8页Journal of Xi'an Jiaotong University

摘　　要：本文应用相似理论对喷口中气吹电弧动态过程的微分方程组进行分析.在分别考虑层流流动与紊流流动的条件下,推导出开断过程中电弧各参数之间的比例关系,并与有关文献提供的试验结果进行了验证.结果表明:利用这些比例关系,可对电弧动态特性进行定性和定量预测.由已知的少数参考点的变化特性,可以推知电弧动态过程中一些主要参数的变化特性,从而避免了常规方法中复杂的方程组求解运算.The similarity theory is used in the analysis of differential equations of nozzle are.Un- der the assumptions of laminar and turbulent flow,the similarity relations between the are parameters are obtaincd and checked With cxperimental results of relevant literatures. With these relations the dynamic characteristics of nozzle are can be explored qualitatively and quantitatively.From only a few known reference points the main characteristics of some arc parameters can be predicted,therefore it is unnecessary to solve the complicated conservation equations.

关 键 词：断路器 电弧 动态特性 相似性理论 

分 类 号：TM561.5[电气工程—电器]