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Transformer vibration sound signal filtering method and system utilizing nonlinear regularization

A nonlinear and acoustic signal technology, applied in the field of electric power, can solve problems such as insufficient attention, and achieve the effect of simple calculation and good robustness

Inactive Publication Date: 2019-12-06
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current commonly used methods have not paid enough attention to this problem, and have not taken effective measures to solve this problem

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  • Transformer vibration sound signal filtering method and system utilizing nonlinear regularization
  • Transformer vibration sound signal filtering method and system utilizing nonlinear regularization
  • Transformer vibration sound signal filtering method and system utilizing nonlinear regularization

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but 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 making creative efforts belong to the protection scope of the present invention.

[0022] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] figure 1 Schematic flow chart of a transformer vibro-acoustic signal filtering method using nonlinear regularization

[0024] figure 1 It is a schematic flowchart of a transformer vibration-acousti...

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Abstract

The embodiment of the invention discloses a transformer vibration sound signal filtering method and system using nonlinear regularization. The method comprises the following steps: step 1, inputting an actually measured vibration sound signal sequence S; 2, performing noise filtering processing on the signal sequence S according to a nonlinear regularization principle, wherein the signal sequenceafter noise filtering is SNEW, specifically, SNEW is equal to [I + H (CG-I)]-1HCS, I is an N * N-dimensional unit matrix, H is a nonlinear factor matrix, C is a regularization matrix, and G is a constraint matrix.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a filtering method and system for transformer vibration-acoustic signals. 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 usually includes winding deformation, wind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H17/02G01H17/00
CPCG01H17/00H03H17/0219
Inventor 翟明岳
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH