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A Filtering Method for Transformer Vibration and Acoustic Detection Signal

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

Active 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

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

Method used

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  • A Filtering Method for Transformer Vibration and Acoustic Detection Signal
  • A Filtering Method for Transformer Vibration and Acoustic Detection Signal
  • A Filtering Method for Transformer Vibration and Acoustic Detection Signal

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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 filtering method for vibration-acoustic detection signal of transformer operating state using low-rank matrix restoration

[0024] figure 1 It is a schematic flow...

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Abstract

The embodiment of the present invention discloses a method and system for detecting vibration and sound signals in the operating state of a transformer using low-rank matrix recovery. The method includes: Step 1, inputting the measured vibration and sound signal sequence S; The signal sequence S is processed to filter out noise, and the data sequence S after filtering out the noise is generated NEW ; Specifically: wherein, is an N-dimensional intermediate parameter vector; represents the Frobenius norm of *; λ is a low-rank matrix restoration factor; η(X i ; α) represents the penalty function; X i is the ith element in the N-dimensional intermediate parameter vector X; α represents the penalty factor.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a filtering method and system for a vibration-acoustic detection signal of a transformer operating state. 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 in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/62G01H17/00G06F17/16
CPCG01H17/00G06F17/16G01R31/62
Inventor 翟明岳
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH