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Method and device for vibro-acoustic detection of transformer operating state based on grayscale theory

A technology of operating state and grayscale theory, applied in the field of transformers, can solve problems such as being easily affected by environmental noise and not getting results, and achieve the effects of improved performance, good robustness, and simple calculation.

Inactive Publication Date: 2021-06-11
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Since the vibration-acoustic detection method utilizes the vibration signal sent by the transformer, it is easily affected by environmental noise, so this method often does not obtain satisfactory results when applied in the actual working environment.

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  • Method and device for vibro-acoustic detection of transformer operating state based on grayscale theory
  • Method and device for vibro-acoustic detection of transformer operating state based on grayscale theory
  • Method and device for vibro-acoustic detection of transformer operating state based on grayscale theory

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Embodiment Construction

[0045] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0046] It should be clear that the described embodiments are only some 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 creative efforts fall within the protection scope of the present invention.

[0047] For the convenience of description, the above devices are described by dividing their functions into various units / modules and describing them separately. Of course, when implementing the present invention, the functions of each unit / module can be implemented in one or more pieces of software and / or hardware.

[0048] Such as figure 1 As shown, it is a vibration and sound detection method based on the gray scale theory of the transformer operating state according to the present invention, including:

[0049]...

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Abstract

The embodiment of the present invention discloses a method and device for detecting vibration and sound of transformer operating state based on gray scale theory. The method includes: Step 1, input the data sequence of the measured vibration and sound signal of the transformer; Step 2, estimate the The distribution probability F of the data sequence m ; Step 3, according to the distribution probability F m , calculate the entropy value corresponding to each data in the data sequence; step 4, rearrange the data sequence according to the order of the entropy value of the data from large to small; step 5, according to the rearranged data sequence, calculating the gray vector point by point; step 6, judging the running state of the transformer according to the gray vector.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a vibration-acoustic detection method and device for the operating state of transformers based on gray scale theory. Background technique [0002] With the rapid development of smart grid, the safe and stable operation of power equipment is particularly important. At present, it is more and more important and urgent to carry out the operation state detection of the power equipment with ultra-high voltage and above voltage level, especially the detection of abnormal state. As an important part of the power system, the power transformer is one of the most important electrical equipment in the substation, and its reliable operation is related to the safety of the power grid. Generally speaking, the abnormal state of the transformer can be divided into iron core abnormality and winding abnormality. Iron core abnormality mainly manifests as iron core saturation, and winding abnormality u...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/62G01H17/00G06F17/18
CPCG01M13/00G01R31/00G06F17/18
Inventor 翟明岳
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH