Transformer tap switch fault monitoring method, system and device

Abstract

The invention relates to a transformer tap switch fault monitoring method, system and device and a computer readable storage medium. The method comprises the steps of obtaining a first detection spectrogram if the transformer tap switch remains unchanged within a preset duration after gear shifting adjustment is completed; the first detection spectrogram being a detection spectrogram of target gas in the transformer tap switch oil chamber; selecting the peak top of the spectrum peak of the first detection spectrogram and a preset number of data points on the two sides of the peak top of the spectrum peak of the first detection spectrogram to obtain a first data set; obtaining the smoothness of the peak top of the spectrum peak of the first detection spectrogram according to the first data set; obtaining the content of the target gas according to the smoothness of the peak top of the spectral peak of the first detection spectrogram and the conversion coefficient of the target gas; and under the condition that the content of the target gas exceeds a preset threshold value, judging that the transformer tap switch has a fault. The method can quickly and accurately judge whether the transformer tap switch has a fault or not, can find abnormity at the early stage of the fault, and timely intervenes to avoid accident expansion.

Description

technical field [0001] The present application relates to the technical field of transformer fault monitoring, in particular to a transformer tap changer fault monitoring method, system and device, and a computer-readable storage medium. Background technique [0002] Transformers play an extremely important role in power systems. Taking the high-voltage DC transmission technology as an example, the converter transformer is the most important primary power equipment, and the main function of the converter transformer is to provide the power supply for special requirements. The converter transformer is subjected to AC voltage on the grid side and DC voltage on the valve side, so the converter transformer works in harsher conditions than traditional AC transformers and is more prone to failure. [0003] The tap changer of the converter transformer is a component that is more prone to failure among the components of the converter transformer. In the traditional technology, the...

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Problems solved by technology

In the traditional technology, the water in oil, oil withstand voltage test, and dissolved gas analysis in oil are mainly carried out on the oil sample of the switch, which belongs to manual sampling detection, which has the problems of slow detection speed and low efficiency, and cannot realize the on-line analysis of the oil sample of the tap changer. monitor

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