Corona discharge positioning method and device, electronic equipment and storage medium

A technology of corona discharge and positioning method, which is applied in the direction of testing dielectric strength, equipment, character and pattern recognition, etc., can solve the problems of inability to detect corona discharge, increase the difficulty and cost of optical coupling, and affect the accuracy of judgment, etc., to achieve The effect of high resolution, timely positioning, and good acoustic performance

Active Publication Date: 2021-04-23
INST OF ACOUSTICS CHINESE ACAD OF SCI +2
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Problems solved by technology

However, the ultra-high-frequency electromagnetic wave method is susceptible to strong interference from electromagnetic noise distributed in the frequency range (30MHz-300MHz), which affects the accuracy of judgment, and the ultraviolet imaging method needs to

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  • Corona discharge positioning method and device, electronic equipment and storage medium
  • Corona discharge positioning method and device, electronic equipment and storage medium
  • Corona discharge positioning method and device, electronic equipment and storage medium

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Embodiment Construction

[0040] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0041] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such th...

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Abstract

The invention discloses a corona discharge positioning method and device, electronic equipment and a storage medium. The method comprises the steps: acquiring a corona discharge signal received by an ultrasonic sensor array; carrying out discrete Fourier transform and focus conversion on the corona discharge signal, and establishing a covariance matrix; and determining the arrival direction of the corona discharge signal by using a multi-signal classification algorithm according to the covariance matrix. Because the sound wave excited by corona discharge has a frequency of up to 300 kHz and has strong directivity, it can cause the ultrasonic sensors disposed at various locations in the plane to generate different responses. According to the embodiment of the invention, the arrival direction of the corona discharge signal is calculated by using a multi-signal classification algorithm, the resolution is high, corona discharge can be conveniently and timely positioned, and the method is more intuitive and effective.

Description

technical field [0001] The present invention generally relates to the technical field of ultrasonic detection, in particular to a corona discharge positioning method, device, electronic equipment and storage medium. Background technique [0002] Corona discharge (Corona Discharge) is a form of self-sustained discharge unique to extremely uneven electric fields, and is one of the characteristics of extremely uneven electric fields. When the local electric field is high enough, corona discharge will greatly increase the power loss in the transmission process and seriously endanger the outdoor insulation of the high-voltage power system. [0003] At present, related technologies use an ultra-high frequency (UHF) electromagnetic wave method or an ultraviolet (UV) imaging method to detect corona discharge. However, the ultra-high-frequency electromagnetic wave method is susceptible to strong interference from electromagnetic noise distributed in the frequency range (30MHz-300MHz...

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Application Information

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IPC IPC(8): G01R31/12G06K9/62G06K9/00
CPCG01R31/1209G06F2218/06G06F2218/12G06F18/251G06F18/24
Inventor 张晗林振源沈立峰王峰郑剑锋
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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