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A Pattern Recognition Method for Partial Discharge Signals in Ultrasonic Detection Considering Phase Difference

An ultrasonic detection and discharge signal technology, applied in character and pattern recognition, testing dielectric strength, computer parts, etc., can solve the problems of inability to discharge pattern recognition, recognition function failure, etc., to facilitate secondary evaluation and high recognition accuracy. Effect

Active Publication Date: 2021-02-09
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Therefore, the discriminant function processes the ultrasonic detection partial discharge data, and the system may not be able to recognize the discharge pattern of the field measured data of the electrical equipment in the substation, and the recognition function will be invalid.

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  • A Pattern Recognition Method for Partial Discharge Signals in Ultrasonic Detection Considering Phase Difference
  • A Pattern Recognition Method for Partial Discharge Signals in Ultrasonic Detection Considering Phase Difference
  • A Pattern Recognition Method for Partial Discharge Signals in Ultrasonic Detection Considering Phase Difference

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0039] A mode discrimination method for ultrasonic detection of partial discharge signals considering phase difference, such as figure 2 As shown, including the high-voltage test defect model, ultrasonic pulse waveform signal acquisition, peak time series, PRPD spectrum, feature parameter extraction (statistical calculation), discharge fingerprint library, training sample library, intelligent algorithm, discriminant function, identification results, and E...

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Abstract

The invention relates to a method for pattern recognition of ultrasonic detection partial discharge signals considering phase difference, comprising the following steps: 1) carrying out the pattern recognition process of partial discharge signals with accurate reference phase ultrasonic detection under laboratory conditions; The electrification detection device or the online monitoring system conducts the ultrasonic detection partial discharge signal pattern recognition process considering the phase difference. Compared with the prior art, the present invention has the advantages of high recognition accuracy and the like.

Description

technical field [0001] The invention relates to a method, in particular to a pattern recognition method for ultrasonic detection partial discharge signals considering phase difference. Background technique [0002] At present, the ultrasonic method has the advantages of live measurement and easy fault location, so it is very suitable for the insulation defect detection of electrical equipment. like figure 1 As shown, the current main process of ultrasonic detection system processing partial discharge signal data is as follows: ① collect pulse waveform-time sequence, perform peak hold conversion into peak-phase sequence; ② produce various PRPD discharges based on phase window based on peak-phase sequence Spectrum; ③Using statistical operators to extract characteristic parameters of each discharge spectrum to form a discharge fingerprint; ④All defect models form a discharge fingerprint library with accurate phases under high-voltage tests in the laboratory to form a training ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12G06K9/00
Inventor 司文荣傅晨钊陆启宇黄华高凯胡正勇陈璐
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO