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Method for detecting fault of oil-immersed transformer

An oil-immersed transformer and fault technology, applied in the field of transformer fault detection, can solve the problems of time-consuming, labor-intensive and long-time

Active Publication Date: 2022-08-02
SHANDONG HUASHANG ELECTRIC
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Problems solved by technology

And this method is undoubtedly a very complicated process, which takes a long time and is time-consuming and labor-intensive.

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  • Method for detecting fault of oil-immersed transformer
  • Method for detecting fault of oil-immersed transformer
  • Method for detecting fault of oil-immersed transformer

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Embodiment Construction

[0029] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the following describes a method for detecting faults of an oil-immersed transformer according to the present invention with reference to the accompanying drawings and preferred embodiments. , structure, characteristics and efficacy, detailed descriptions are as follows. In the following description, different "one embodiment" or "another embodiment" are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0031] The specific scheme of a method for detecting a fault of an oil-immersed transformer p...

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Abstract

The invention relates to the technical field of transformer fault detection, in particular to a method for detecting faults of an oil-immersed transformer, which comprises the following steps of: acquiring a fault edge image of the transformer, extracting a closed edge region, fitting a minimum circumcircle and a maximum incircle of the region, and acquiring a fault edge image of the transformer; calculating an evaluation index of the closed edge area according to the circle center coordinate and the radius; recording the minimum circumcircle of one closed edge area and the minimum circumcircle of the adjacent closed edge area as a combined circular ring; according to the gray difference and the gradient difference between the two circles in the combined circular ring and the relative position distance, the contour evaluation index of the combined circular ring is calculated; and obtaining a possibility index of the combined ring according to the evaluation index of the closed edge area and the evaluation index of the contour, and if the possibility index of the combined ring is smaller than a possibility threshold value, determining that the transformer has an eddy current loss heating fault. According to the invention, the fault of the transformer can be accurately and rapidly obtained.

Description

technical field [0001] The invention relates to the technical field of transformer fault detection, in particular to a method for detecting faults of oil-immersed transformers. Background technique [0002] With the rapid development of the national economy and the rapid expansion of the power grid, substation equipment, as the core and hub of energy transmission in the power grid, must ensure its continuous, stable and reliable operation to prevent major power grid failures. The oil-immersed transformer in the substation equipment is the core of the substation, and its safe and reliable operation is the basis for the normal and stable operation of the power grid. [0003] In order to ensure the normal and stable operation of the power grid, it is necessary to replace or repair the oil-immersed transformer before it fails, so as to avoid its failure affecting the power grid operation. The most widely used method for transformer fault detection is oil chromatography, that is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/11G06T7/13G06T7/187G06T7/66G06T7/90G06V10/762G06K9/62
CPCG06T7/0004G06T7/13G06T7/66G06T7/187G06T7/11G06T7/90G06V10/763G06F18/2321Y04S10/52
Inventor 陈尔奎肖正峰黄雅婷杨艳艳曹振华侯颜军
Owner SHANDONG HUASHANG ELECTRIC
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