Abstract

The simulation model for study on grounding faults of distribution network is often too simple, such as the problems of the incomplete access devices, the oversimplified network structure and the incorrect components parameters, which may lead to incorrect understanding of electrical characteristics of grounding fault. Aiming at single-phase grounding fault analysis, on basis of extensive investigation of typical network structure and access equipment, equipment selection and parameter calculation are carried out according to the design standard and specification. Then the system simulation model of system reflecting the engineering practice is established by adopting the accurate element and the network model. What’s more, the influence of access equipment on grounding fault is defined.

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