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

A technology of corona discharge and positioning method, which is applied in the direction of testing dielectric strength, instruments, calculations, etc., can solve the problems of increasing the difficulty and cost of optical coupling, not being able to detect corona discharge, and affecting the accuracy of judgment, so as to achieve timely positioning, The effect of high resolution, good acoustic performance

Active Publication Date: 2022-02-01
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 be implemented in the shutter area (200nm-280nm) of the ultraviolet spectrum. Increases the difficulty and cost of optical coupling, and the method cannot detect corona discharge when there is confusion between the UV detection device and the discharge source

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

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[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 present application discloses a corona discharge positioning method, device, electronic equipment and storage medium. The method includes acquiring a corona discharge signal received by an ultrasonic sensor array; performing discrete Fourier transform and focusing on the corona discharge signal converting, and establishing a covariance matrix; according to the covariance matrix, using a multi-signal classification algorithm to determine the direction of arrival of the corona discharge signal. Since the sound wave excited by the corona discharge has a frequency up to 300kHz and has strong directivity, this can cause different responses of the ultrasonic sensors arranged at various positions in the plane. The embodiment of the present application uses a multi-signal classification algorithm to calculate the arrival direction of the corona discharge signal, which has a high resolution, and can locate the corona discharge conveniently and in a timely manner, which 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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Patent Type & Authority Patents(China)
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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