Grounding fault type identification of distribution network can provide guidance for fault line inspection and shorten the time of fault line inspection. Aiming at different grounding fault types of 10 kV distribution network lines

a fault identification method based on phase-space reconstruction and average conductance characteristics is proposed. According to the arc characteristics of zero sequence current in different dielectric grounding faults

the phase plane trajectory is reconstructed by phase-space reconstruction. The information dimension and attractor area characteristics are calculated. The faults are divided into reliable grounding faults and unreliable grounding faults according to the feature recognition quantity. Furthermore

by calculating the average conductance of various types of faults as the criterion of fault identification

the faults can be divided into different types of faults. The test results show that the proposed method can effectively identify the types of grounding faults in different media.