Automatic defect identification method and device for high-voltage cable grounding system

Abstract

The invention discloses an automatic defect identification method and device for a high-voltage cable grounding system. The method comprises the following steps: collecting current construction sample data of a plurality of cable line sheaths; dividing the sample data into a training set and a test set; training the constructed automatic defect identification model of the high-voltage cable grounding system by adopting the training set; inputting a test sample in a test set into the trained model, comparing a state number output by the model with an actual state number of the test sample, and judging the performance of the defect automatic identification model; acquiring the sheath current of the cable line to be detected; and inputting the sheath current of the cable line to be detected into the trained defect automatic identification model to obtain a state number identification result corresponding to the sheath current of the cable line to be detected. The technical problems that the defect identification and diagnosis process of an existing high-voltage cable grounding system highly depends on experience of inspection personnel, and automatic identification of the defects of the cable grounding system is not achieved are solved.

Description

technical field [0001] The present application relates to the technical field of defect identification of a high-voltage cable grounding system, in particular to a method and device for automatic defect identification of a high-voltage cable grounding system. Background technique [0002] High-voltage power cables are widely used in urban power transmission systems because they not only meet the large-capacity power transmission requirements of urban power grids, but also avoid damage to the original urban appearance. Although the failure probability of cable lines is much lower than that of traditional urban overhead transmission lines, since power cables are mostly laid in trenches, it is difficult to locate after a fault occurs and it takes a long time to restore power supply, which often has a great impact on the social economy. [0003] The grounding system is an important part of the cable line and can provide a diversion path in the event of a cable fault. Engineerin...

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Problems solved by technology

[0005] This application provides a method and device for automatic defect identification of high-voltage cable grounding systems, which solves the problem that the defect identification and diagnosis pro...

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