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Method and system for detecting vibration and sound of transformer operating state using character spacing

A technology of running status and character spacing, which is applied in the electric power field, can solve the problems of being easily affected by environmental noise and not getting it, and achieve the effects of improving performance, simple calculation, and good robustness

Active Publication Date: 2021-09-24
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Description
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Problems solved by technology

[0004] Although the transformer vibration and sound detection method is widely used in the monitoring of transformer operation status, and the technology is relatively mature, but because the vibration and sound detection method uses the vibration signal sent by the transformer, it is easily affected by environmental noise, so this method is not suitable for practical work. Unsatisfactory results are often not obtained when applied in the environment

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  • Method and system for detecting vibration and sound of transformer operating state using character spacing
  • Method and system for detecting vibration and sound of transformer operating state using character spacing
  • Method and system for detecting vibration and sound of transformer operating state using character spacing

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[0020] 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.

[0021] 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.

[0022] figure 1 Schematic flow chart of a vibration and sound detection method for transformer operating status using character spacing

[0023] figure 1 It is a schematic flowchart of a method for detect...

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Abstract

The embodiment of the present invention discloses a method and system for detecting the vibration and sound of the transformer operating state using character spacing. The method includes: Step 1, inputting the measured vibration and sound signal sequence S; Step 2, judging the operating state of the transformer according to the nature of the character spacing . Specifically: if the character spacing of the Kth window is H K Satisfy the judgment condition|H K |≥e 0 , then at the Kth point of the signal sequence S, the transformer is in an abnormal operation state; otherwise, the transformer is in a normal operation state. Among them, e 0 Threshold for judging the running status.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a method and system for detecting vibration and sound in the operating state of a transformer. 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. [0003] The basic principle of transformer operation state detection is to extract various characteristic quantities in the operation of the transformer, analyze, identify and track the characteristic quantities to monitor the abnorma...

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Application Information

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