Power equipment acoustic imaging method and system based on boundary element method

A technology of power equipment and boundary element method, which is applied in the field of acoustic imaging method and system of power equipment based on boundary element method, and can solve problems such as the reduction of imaging effect

Inactive Publication Date: 2021-09-07
STATE GRID ZHEJIANG HAIYAN POWER SUPPLY
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the current acoustic imaging method for electric power equipment is susceptible to the technical problem that the imaging effect is reduced due to the influence of ambient noise

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  • Power equipment acoustic imaging method and system based on boundary element method
  • Power equipment acoustic imaging method and system based on boundary element method

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Embodiment Construction

[0026] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE INVENTION DETAILED DESCRIPTION OF THE INVENTION

[0027] Sound imaging method based on boundary element method, such as figure 1 As shown, including the following steps:

[0028] S1: Analyze the surface closure of the power equipment; the analysis process of the surface closure of the power equipment includes: determining whether the surface of the power device is closed, labeled a power device that is closed by the surface structure as a B. When determining the surface closure of the power device, multiple analyzing units can be set at the same time to simultaneously analyze the plurality of power devices, facilitate use in a power device distribution-intensive environment.

[0029]S2: selection of corresponding data corresponding BEM collected electric device according to the analysis result; data collection method electrical equipment is: by direct methods acquisition unit is marked as a data electric device; indire...

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Abstract

The invention discloses a power equipment acoustic imaging method and system based on a boundary element method. The method comprises the following steps of S1, analyzing the surface sealing condition of power equipment, according to an analysis result, selecting a corresponding boundary element method to collect corresponding data of the power equipment, performing reconstruction calculation of the sound field according to the collected data, and analyzing the accuracy of the reconstructed sound field through an image analysis method. The surface structure analysis module judges the sealing condition of the surface structure of the power equipment, the power equipment data acquisition module selects a corresponding data acquisition mode according to the surface structure of the power equipment, the reconstructed sound field calculation module calculates the radiation sound field of the power equipment within a certain range by using a boundary element method, comprehensive analysis of the acoustic radiation characteristics of power equipment, and then, the accuracy analysis module evaluates the similarity between the reconstructed sound field and the field measurement sound field through an image analysis method, and the accuracy of the calculation method is determined.

Description

Technical field [0001] The present invention relates to the field of power devices detection, and more particularly to an acoustic imaging method and system based on boundary element method. Background technique [0002] The power device will make a sound at runtime, and the sound contains a lot of status information. The acquisition of the acoustic signal does not have to contact the device, so that the sound signal is flexible with the sound signal, the device is flexible, the device is simple, the equipment has a small impact, and the measurement is simple and fast, suitable for distribution, high voltage power equipment fault recognition. At present, the method of power equipment imaging has a near field measurement method, surface strength method, a sound intensity method, and a visual noise source identification method based on microphone array, but due to power equipment installation area, in particular transformer, power supply, etc. There are more, and the noise of radia...

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Application Information

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IPC IPC(8): G01N29/06G01N29/44G01H5/00G01H17/00
CPCG01N29/0654G01N29/069G01N29/44G01H5/00G01H17/00
Inventor 汪泽州陈刚鲍建飞储建新陆萍陆建琴雷健新李豹胡燕伟杨春环龚书能陈宁宁胡松松孙豪豪张依辰孙帅董子奕李伟操晨润张建荣郑涛陈玉峰曹志勇刘群钱若晨魏信伍沈哲刘斌王晨波
Owner STATE GRID ZHEJIANG HAIYAN POWER SUPPLY
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