Distribution network single-phase ground fault location method and system based on frequency sweep injection
A single-phase ground fault, positioning system technology, applied in the direction of fault location, information technology support system, fault detection according to conductor type, etc., can solve the problem of fault location failure and other problems, achieve high accuracy, adjustable amplitude, and wide frequency Effect
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[0032] The invention provides a single-phase ground fault location system and method of a distribution network based on sweep frequency injection, so as to improve the positioning accuracy of a single-phase ground fault of a three-phase neutral point ungrounded system distribution network line. The following will be described in the form of an embodiment.
[0033] The distribution network single-phase ground fault location system based on frequency sweep injection provided by the present invention includes several lines to be located, and the input ends of the several lines to be located are respectively connected to the output ends of the three-phase bus bars of the distribution network. The output ends of the plurality of lines to be positioned are electrically connected to three-phase voltage transformers and three high-voltage switches in sequence. It also includes a centralized processor electrically connected to the three-phase voltage transformer and the three high-volt...
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