Abstract:

The fault section of a distribution network can be judged by the zero sequence current phase fault location.The article uses the simulation module in Matlab/Simulink to simulate the non-ground neutral system.It introduces the building of the simulation model,then simulates and analyses the ground fault in different conditions such as changing the size of the grounding resistance and the length of the line,and with or without load.The simulation results agree with the theoretical one,thus laying the basis for practical applications.

Key words: zero sequence current phase;fault location;Matlab simulation;single-phase ground fault