摘要
以电路理论为基础,对RLRh串联电路进行分析计算,提出一种以电弧电流为输出的新型电弧数学模型。此模型以电弧电阻为变量,将电弧电阻看成时间的周期函数,并对电弧电阻进行分区域处理,给出了各区域电弧电阻的变化规律与数学表达式。应用新模型进行计算,并将计算结果与Cassie电弧模型和Stokes电弧模型仿真结果进行对比,验证了新型电弧模型优于Cassie电弧模型和Stokes电弧模型,研究可为串联故障电弧的诊断提供可靠的理论依据。
Based on the circuit theory,this paper carried out analysis and calculation for the RLRh series circuit and proposed a kind of new type of arc mathematical model with arc current output.This model regarded the arc resistance as the variable,which was the periodic function of time.The arc resistance was carried out regional treatment.This paper gave the variation law and the mathematical expression of each regional resistance.This paper calculated the new type of model and the calculation result was compared with Cassie arc model and Stokes arc model to show excellent agreement.It is verified that the new arc model is better than the Cassie arc model and the Stokes arc model,which provides the reliable theoretical basis for the diagnosis of series fault arc.
作者
王建鹏
韩浩
WANG Jian-peng;HAN Hao(Shouguang City Power Supply Company, State Grid Shandong Electric Power Company, Shouguang 262700, China)
出处
《电工电气》
2017年第12期33-36,50,共5页
Electrotechnics Electric
关键词
电弧模型
电弧电阻
串联
特性分析
arc model
arc resistance
series circuit
characteristic analysis
