Fault diagnosis method of power distribution network
A technology of distribution network fault and diagnosis method, which is applied in the field of power grid, can solve problems such as high work intensity, delayed repair time, and influence on power supply reliability, so as to improve reliability and work efficiency, reduce maintenance outage time, and reduce manual setting. Check the effect of the project
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[0016] A distribution network fault diagnosis method, comprising the following steps:
[0017] S1: Obtain equipment status information and switch action information. The equipment status information includes output current information, output voltage information, signal reception information and signal generation information. The switch action information includes switch-on information, switch-off information, live information and power-off information information.
[0018] S2: Collect the current on the primary side of the transmission line, including the AC current and zero-sequence current on the primary side;
[0019] S3: Compare the collected AC current value and zero-sequence current value with the preset short-circuit fault current threshold and grounding fault current threshold, respectively. If the sampled AC current value reaches or exceeds the short-circuit fault current threshold, or when the sampling When the zero-sequence current value exceeds the ground fault c...
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