Method and system for diagnosing transformer fault by using sound feature codes

A transformer fault and sound feature technology, applied in transformer testing, information technology support systems, instruments, etc., can solve the problems of time-consuming and labor-intensive manual inspection methods, low reliability of fault diagnosis, low diagnostic accuracy, etc., and achieve diagnosis of multiple types of faults , easy to program and achieve high diagnostic accuracy

Pending Publication Date: 2022-05-24
HUNAN UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

The manual inspection method is time-consuming and laborious, and it is prone to misjudgments. The diagnosis results are closely related to the experience of technicians; the method and algorithm based on artificial intelligence are difficult to implement, and it is difficult to combine with embedded developme

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  • Method and system for diagnosing transformer fault by using sound feature codes
  • Method and system for diagnosing transformer fault by using sound feature codes
  • Method and system for diagnosing transformer fault by using sound feature codes

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Embodiment Construction

[0027] like figure 1 As shown, the method steps for diagnosing transformer faults by using sound feature coding in this embodiment include:

[0028] 1) Collect transformer sound samples;

[0029] 2) Extract various sound features of transformer sound samples;

[0030] 3) for each sound feature, obtain corresponding feature coding according to the preset transformer sound feature coding rule table, and combine the feature coding combinations of all voice features to form a feature coding combination;

[0031] 4) Query the preset transformer fault table according to the feature code combination to obtain the transformer fault diagnosis result.

[0032] In this embodiment, the preset transformer sound feature coding rule table includes the mapping relationship between the value range of the voice feature and the feature coding, and obtaining the corresponding feature coding according to the preset transformer voice feature coding rule table refers to According to the value ran...

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Abstract

The invention discloses a method and a system for diagnosing a transformer fault by using sound feature coding. The method comprises the following steps: acquiring a transformer sound sample; extracting a plurality of sound features of the transformer sound sample; for each sound feature, obtaining a corresponding feature code according to a preset transformer sound feature coding rule table, and combining the feature codes of all the sound features to form a feature code combination; and querying a preset transformer fault table according to the feature code combination to obtain a transformer fault diagnosis result. The method and the system for diagnosing the transformer fault by using sound feature coding have the advantages of simple diagnosis method, easy programming realization, multiple diagnosis fault types and high diagnosis accuracy.

Description

technical field [0001] The invention relates to the technical field of power safety monitoring, in particular to a method and system for diagnosing transformer faults by using sound feature coding. Background technique [0002] Transformer is one of the most critical equipment in the power system, and its safe operation is of great significance to ensure the reliability of power supply of the power system. The sound is produced with the operation of the transformer, and the amplitude, time-domain waveform, and spectral characteristics of the sound are closely related to its operating voltage, current, mechanical state, excitation state, and insulation state, which can reflect the changes in the operating state of the equipment in time. According to DL / T 573-2010 "Maintenance Guidelines for Power Transformers", transformer overload, unbalanced load, harmonic load, severe overheating, DC bias, partial discharge, loose winding core, loose accessories and other defects are relat...

Claims

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Application Information

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IPC IPC(8): G01R31/62G10L25/03G10L25/51
CPCG01R31/62G10L25/03G10L25/51Y04S10/52
Inventor 吴晓文卢明陈超洋贺悝谢斌谭庄熙邹莹曹浩
Owner HUNAN UNIV OF SCI & TECH
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