GIS internal defect ultrasonic imaging identification method

Abstract

The invention discloses a GIS (Geographic Information System) internal defect ultrasonic imaging identification method, which comprises the steps of collecting GIS internal defect discharge, carrying out simulation research on typical GIS defects, establishing an imaging database, carrying out a neural network fingerprint identification technology and carrying out imaging processing, and is characterized in that the neural network fingerprint identification technology comprises network nerves and fingerprint identification; the neural network comprises information processing, information parallel processing, distributed storage and high-speed operation, and the fingerprint identification comprises fingerprint image identification, fingerprint feature extraction, fingerprint graph preprocessing, a fingerprint image algorithm and a fingerprint image matching algorithm; compared with a traditional GIS internal defect ultrasonic imaging recognition method, the GIS internal defect ultrasonic imaging recognition method has the advantages that the composite ultrasonic sensor is adopted, the accuracy of receiving transient signals is improved, GIS defects can be found as early as possible and accurately positioned through ultrasonic imaging, and therefore maintenance work can be carried out in a planned mode, the maintenance time is shortened, the maintenance cost is saved, and the maintenance efficiency is improved. The operation reliability is improved.

Description

technical field [0001] The invention relates to the technical field of software analysis, and more particularly, the invention relates to an ultrasonic imaging identification method for internal defects of GIS. Background technique [0002] With the rapid development of the national economy, the electric power industry is also developing rapidly and continuously. GIS has been widely used in the power grid with the development of electric power. The reason is that the internal defects of GIS cause the reduction of insulation performance. As we all know, GIS has a computer system for centralizing, storing, operating, processing, analyzing, retrieving and displaying geographic reference information, which can identify data at the location of the database, and the internal defects of GIS cause partial discharge. Fault, the internal partial discharge of GIS is an unstable signal source, and the discharge time is short, usually nanosecond duration. The acquisition card used in tra...

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Problems solved by technology

[0002] With the rapid development of the national economy, the electric power industry is also developing at a high speed. GIS has been widely used in the power grid with the development of electric power. The reason is that the internal defects of GIS cause the insulation performance to decrease. As we all know, GIS has a computer system for centralization, storage, operation processing, analysis, retrieval and display of geographic reference information, which can identify the data at the location of the database. Internal defects of GIS cause partial discharge. Fault, the internal partial discharge of GIS is an unstable signal source, and the discharge time lasts for a short time, usually at the nanosecond level. The acquisition card used in traditional GIS has low accuracy and low sampling rate. The internal defects of traditional GIS adopt Ultrasound is used in conjunction with sensors. The transmitting sensor and the receiving sensor are two independent entities. The accuracy of triggering and receiving transient signals is not high, and the controller’s imaging processing efficiency for transient signals is low.

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