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摘要
In order to eliminate the influence of neutral grounding modes, transition resistance and the blind spot of linear correlation method on the location accuracy, when the single-phase grounding fault occurs in the system, a fault location method based on amplitude feature and Hausdorff distance algorithm is proposed. Firstly, the fault feature of zero-sequence current transient components are analyzed, and the relationship between the amplitude characteristics of zero-sequence current transient components at both ends of the section is summarized. Secondly, the amplitude feature matching degree of the zero-sequence current transient components at both ends of the feeder section is measured by introducing the Hausdorff distance algorithm, and the fault section can be effectively distinguished by comparing with the set threshold. Finally, the simulation rusults verify that the proposed method has no location blind zone, and the fault zone can be accurately located in different system grounding modes and different grounding transition resistances.
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