配电网单相故障仿真计算及分析

SINGLE PHASE FAULT SIMULATION AND ANALYSISOF DISTRIBUTION SYSTEMS

相分量法可用于全面、准确地描述电力系统中不对称元件的电气特性。文中采用相分量法的数学模型来描述配电网结构参数和负荷的不对称性 ,在此基础上利用电力系统综合仿真计算软件NETOMAC,对配电网单相接地故障进行了较为全面的仿真计算和理论分析 ,得到了配电网单相接地故障的相关结论 ,为配电网故障分析提供了定量分析依据。

Because of some components included the distribution network configuration are asymmetrical, it's hard to analyze the asymmetrical faults in a symmetrical system by the symmetrical component method. The electrical characteristics of the asymmetrical components in power systems can be exactly described by the models based on the co-ordinate phase. The co-ordination phase models are applied to represent the asymmetry of parameters and framework in distribution network in this paper. A lot of simulating study and theory analysis are realized by using NETOMAC which is a powerful simulating software applied in power systems. Some interesting conclusions are made for the quantitative analysis of distribution system faults.