A method and system for judging transformer winding deformation

A technology for transformer windings and winding deformation, applied in transformer testing, electrical winding testing, etc., can solve the problems of low detection efficiency, large safety hazards, and long detection period, and achieve high detection efficiency, high safety, and short detection process. Effect
CN108693437BActive Publication Date: 2020-12-25STATE GRID HUNAN ELECTRIC POWER +2
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Patent Information

Authority / Receiving Office
CN Ā· China
Patent Type
Patents(China)
Current Assignee / Owner
STATE GRID HUNAN ELECTRIC POWER
Publication Date
2020-12-25

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Abstract

The invention discloses a method and a system for judging the deformation of a transformer winding. The method comprises the steps: acquiring a vibration acceleration signal of a to-be-detected transformer; extracting independent characteristic parameters according to the vibration acceleration signal of the to-be-detected transformer; inputting the independent characteristic parameters into a trained machine learning model to obtain a current winding deformation state of the to-be-detected transformer, wherein the machine learning model is trained to include a mapping relationship between theindependent feature parameters and the winding deformation state. The system includes a computer device programmed to execute the above method. The method and system can effectively detect the deformation state of the transformer winding under the condition that the transformer is not stopped, and have the advantages that the system does not make contact with an electrified device and can achievethe live-line detection, and the test is convenient and efficient.
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Description

technical field

[0001] The invention relates to the field of transformer operation state detection, in particular to a method and system for judging transformer winding deformation. Background technique

[0002] Transformer is an important part of the power system, which undertakes the task of power transmission between power networks of different voltage levels. Its safe operation is of great significance to provide stable and reliable power supply to power users. Transformer windings are one of the most frequently failed components. As of the end of 2006, the number of damage accidents caused by external short-circuit faults in 110kV and above power transformers in the country reached 50% of the total number of accidents. Judging from the dismantling of the transformer after the accident, the transformer faults caused by winding deformation accounted for the vast majority. Therefore, it is necessary to effectively detect the deformation of the transformer winding. At p...

Claims

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