Distribution transformer winding defect identification method, system and device and storage medium

Abstract

The invention discloses a distribution transformer winding defect identification method, system and device and a computer readable storage medium. The method comprises the following steps: injecting a detection voltage signal of a specified parameter into a to-be-detected distribution transformer; acquiring a frequency response signal, corresponding to the detection voltage signal, of the distribution transformer to be detected; making a current control chart according to the frequency response signal and a preset abnormal frequency response signal; judging whether the difference between the current control chart and a preset standard control chart exceeds a preset judgment standard or not; and if the difference exceeds the judgment standard, determining that the winding of the to-be-detected distribution transformer has defects, and generating a detection result. The corresponding standard control chart is made in advance when the distribution transformer to be detected is normal, the detection voltage signal is injected again during commissioning detection to obtain the current control chart, and whether the difference between the two control charts exceeds the preset judgment standard or not is judged. Therefore, whether the to-be-detected distribution transformer has defects or not can be accurately, quickly and efficiently judged.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a method, system, device, and computer-readable storage medium for identifying a winding defect of a distribution transformer. Background technique [0002] Distribution transformers are an important part of power supply, and their reliability is of great significance to the safe and efficient operation of the power grid. The mechanical and electrical stress of the winding will affect the performance of the transformer. When there is a defect in the transformer winding, it is necessary to be able to detect it in time and carry out power-off maintenance, so as to avoid the further development of the defect and the expansion of the scope of the accident, or even damage to the transformer. [0003] Therefore, there is an urgent need for a method capable of identifying winding defects. Contents of the invention [0004] In view of this, the purpose of the present invention is to provid...

AI Technical Summary

Problems solved by technology

The mechanical and electrical stress of the winding will affect the performance of the transformer. When there is a defect in the transformer winding, it is necessary to be able to detect it in time and carry out power-off maintenance, so as to avoid the further development of the defect and the expansion of the scope of the accident, or even damage to the transformer.

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