Power equipment partial discharge identification method, system and equipment and storage medium

Abstract

The invention discloses a power equipment partial discharge identification method, system and equipment and a storage medium. The method comprises the following steps: acquiring sampling data of power equipment within a certain time by adopting a broadband high-speed sampling mode; the sampling data are converted into a PRPD spectrogram, and signal feature extraction and classification are carried out on the PRPD spectrogram; statistical features in the signal features extracted from each type of PRPD spectrogram are substituted into a pre-trained partial discharge identification model corresponding to the type, and whether partial discharge exists in the power equipment or not and the partial discharge type to which the power equipment belongs are obtained; the partial discharge identification model is obtained by training the statistical characteristics extracted from each type of PRPD spectrogram and the discharge type to which the statistical characteristics belong by using a neural network. Broadband high-speed sampling is adopted to collect sampling data, complete partial discharge waveforms are obtained, signal feature extraction and classification are carried out on the PRPD spectrogram, and the pre-trained partial discharge identification model is adopted to carry out partial discharge identification, so that the equipment partial discharge monitoring precision is improved, and false alarms and missing alarms are reduced.

Description

technical field [0001] The invention relates to the field of signal identification, in particular to a method, system, equipment and storage medium for identifying partial discharge of electric equipment. Background technique [0002] Partial Discharge (PD): It means that only a local area of ​​the insulation system discharges without breakdown, that is, the discharge does not penetrate between the conductors to which the voltage is applied. Partial discharges can occur inside an insulator, at the interface between an insulator and a conductor, and on the surface of an insulator. When the conductor is surrounded by gas, the PD at the edge of the conductor is also called corona. [0003] With the development of social science and technology, the economic level continues to improve, and the demand for electricity continues to increase. As the last link in the power network, the distribution network is directly oriented to end users, and is directly related to the reliability...

AI Technical Summary

Problems solved by technology

[0013] In order to solve the problem that the electromagnetic interference existing in the prior art is easy to annihilate the partial discharge signal, and the neural network algorithm for identifying and classifying the partial discharge signal in the prior art has low work efficiency and convergence accuracy, the present invention provides a A method for identifying partial discharge of electric power equipment, comprising:

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