Power distribution network fault intelligent searching and positioning method based on multi-source data fusion

Abstract

The invention discloses a power distribution network fault intelligent searching and positioning method based on multi-source data fusion, and relates to the field of the power distribution network fault diagnosis. The method comprises the following steps: determining a fault occurrence high-probability region, establishing a fault data matrix related to the fault occurrence high-probability region and a network topological node according to the multi-source data of the power distribution network for fault region positioning; constructing a fault description matrix by utilizing the uploaded information of monitoring terminals of a circuit breaker, a section switch and an interconnection switch at the fault moment by the fault data matrix, then performing fault region layer positioning; performing line layer positioning in the determined fault section range, and calculating by utilizing electric quantity information of the nodes at two ends of the fault section, thereby obtaining the precise fault location. Under the support of a judgment result of the region layer, the precise positioning of the fault can be quickly realized, the adopted fault positioning principle is simple and reliable, and the strong anti-transition resistance capacity is provided; a sampling frequency requirement is low, and the fault positioning precision can be improved by improving the sampling frequency.

Description

technical field [0001] The invention belongs to the field of distribution network fault diagnosis, in particular to an intelligent search and location method for distribution network faults based on multi-source data fusion. Background technique [0002] With the development of modern power systems, the safe and normal operation of distribution networks has become a key link in serving grid users. Fast and accurate distribution network fault location technology is the premise of quickly isolating faults and restoring power supply, and plays an important role in improving the reliability and intelligence level of distribution network power supply. Feeder Automation (FA) uses automatic terminal equipment such as Feeder Terminal Unit (FTU) to obtain the operating status of the distribution network in real time, finds and isolates the faulty section based on the current over-limit information monitored by the FTU, and quickly restores the non-faulty section Power supply for los...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a distribution network fault intelligent search and location method based on multi-source data fusion, so as to overcome the shortcomings of the existing distribution network fault location method, such as poor fault tolerance and poor numerical stability

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