摘要
潜供电弧是特高压输电线路亟待解决的关键问题之一。首先从潜供电弧本质出发,并基于分段法建立了电弧数学模型。其次,采用不同的数学方法对电弧模型进行求解,并基于电磁暂态仿真软件PSCAD/EMTDC建立了精确的一次、二次电弧动态特性模型进行仿真研究,较真实地模拟了特高压线路发生单相接地故障时的暂态过程。所建立模型较真实地描述了实际故障时的电弧过程,并且模型精度高,所需参变量简单易求,计算过程简单,能够广泛应用于特高压交流输电系统潜供电弧熄灭研究。
Secondary arc is one of the key problems to be solved urgently for UHV transmission lines.Firstly,a mathematical model of the arc is established based on the essence of the secondary arc and subsection method.Secondly,different mathematical methods are used to solve the arc model.Based on the electromagnetic transient simulation software PSCAD/EMTDC,the accurate dynamic model of the primary and secondary arc is established for simulation research,and the transient process of the single phase ground fault of the UHV line is simulated.The established model can accurately describe the arc process in the case of actual faults.It has high accuracy,simple parameters and simple calculation process,and can be widely used in the study of secondary arc extinction in UHV ACtransmission systems.
作者
王建
WANG Jian(State Grid Qingpu Power Supply Company,SMEPC,Shanghai 201799,China)
出处
《电力与能源》
2023年第4期335-339,共5页
Power & Energy
