基于Matlab的小电流接地系统单相故障仿真分析

小电流接地系统故障如果不能及时切除，有可能进一步扩大为相间短路故障，对电力系统造成重大损失。本文以Matlab软件Simulink和SimPowerSystem工具箱为平台，对小电流接地系统中性点不接地方式的单相接地故障进行建模，并利用零序电流的幅值、相位判别出故障线路和故障相，从而验证了零序电流比幅比相法对中性点不接地方式单相接地故障判别的有效性。

The Simulation and Analysis on Single-phase Fault of Small Current Grounding Power System Based on Matlab

The small current grounding System fault if not removed in time,there may be a further expand the short-circuit fault for alternate with,to power System caused heavy loss based on the Matlab software Simulink and SimPower System toolbox for platform,in the small current grounding System non-ground neutral way one-phase ground fault model,and by using the amplitude of zero sequence current phase discrimination fault line and the fault phases,which testified the zero sequence current ratio than the method of photograph of non-ground neutral way one-phase ground fault the effectiveness of discrimination.