Abstract

At present, the reliability of faulted line selection of single-phase earth fault in distribution network is generally low. This paper proposes a segmented network method based faulted line selection strategy. And the strategy is verified through an emtp simulation by modeling a 10kV ungrounded distribution network. The simulation results prove that the proposed strategy can realize reliable selection of faulted line with single-phase earth fault in distribution network through a small number of switching operations, and it is helpful to deal with single-phase earth fault in distribution network automatically.

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