Transformer diagnosis method and device based on sound wave interference

A diagnostic method and diagnostic device technology, applied to measuring devices, using ultrasonic/sonic/infrasonic waves, instruments, etc., to achieve the effects of simple device, flexible installation, and convenient signal acquisition

Pending Publication Date: 2022-05-06
SHANGQIU POWER SUPPLY CO OF STATE GRID HANAN ELECTRIC POWER CO
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This widely used diagnostic method relies heavily on the subjective judgment and personal experience of technicians, and has great uncertainty.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Transformer diagnosis method and device based on sound wave interference
  • Transformer diagnosis method and device based on sound wave interference
  • Transformer diagnosis method and device based on sound wave interference

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the invention will be clearly and completely described below in conjunction with specific embodiments.

[0036] The embodiment of the present invention provides a transformer diagnosis method based on acoustic wave interference. Sound is a mechanical wave that radiates energy from vibration to the sound transmission medium. It is the same as the signal analysis method caused by vibration and deformation. The acoustic signal contains a large amount of vibration information. It is an important indicator for analyzing the operating status of equipment. When the device is in normal operation, when the mutual motion state between the fuselage and the firmware, the parts, or the parts themselves changes, the device will make a sound, and the sound will also change when the operating state changes. The structure of the transformer is very complex and there are many kinds of compon...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a transformer diagnosis method and device based on sound wave interference. The method comprises the following steps: acquiring an acoustic signal of a transformer; performing signal enhancement and signal filtering on the acoustic signal in sequence to obtain a filtered acoustic signal; inputting the filtering acoustic signal into a fault model, and outputting a fault state and a label corresponding to the filtering acoustic signal; and realizing fault diagnosis of the transformer based on the fault state and the label. The method has the advantages that sound signals can be acquired without contacting equipment, the signals are convenient to acquire, electromagnetic signals are not generated during signal acquisition, normal operation of the equipment is not interfered, and the method is simple and convenient; in addition, the device is simple, and sensor installation is flexible.

Description

technical field [0001] The invention relates to the technical field of transformer fault detection, in particular to a transformer diagnosis method and device based on acoustic wave interference. Background technique [0002] During the operation of the transformer, mechanical deformation is generated under the joint action of internal current, magnetic field and other factors, which is transmitted through its own structure and manifested as a vibration signal. This signal propagates through the surrounding air medium and produces the sound signal of the transformer's operation. . These signals can largely reflect the operating condition of the transformer. During on-site inspection operations, experienced technicians can often use an industrial stethoscope to stick to the transformer box, listen carefully to the sound inside the transformer to judge the operating status of the transformer, find out the type of fault, and even roughly locate the fault. This widely used dia...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01B17/04
CPCG01B17/04
Inventor 郭志家田志勇刘闯阵李恒宇杨光
Owner SHANGQIU POWER SUPPLY CO OF STATE GRID HANAN ELECTRIC POWER CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap