Transformer oil water content-absorption coefficient standard curve fitting method, water content detection method, device, and storage medium

Abstract

The invention discloses a transformer oil water content-absorption coefficient standard curve fitting method, a water content detection method, a device, and a storage medium; wherein the standard curve fitting method includes: collecting THz transmitting waves of different standard water content transformer oil samples; acquiring frequency spectrum of the THz transmitting waves; calculating the absorption coefficients corresponded to different angular frequency points on the frequency spectrum; according to the water content of the transformer oil samples and the absorption coefficients corresponded to different angular frequency points, performing curve fitting to acquire a water content-absorption coefficient fitting curve in correspondence of the same frequency point; calculating the correlation coefficient of every water content-absorption coefficient fitting curve; selecting the water content-absorption coefficient fitting curve, with the maximum correlation coefficient, to be awater content-absorption coefficient standard curve. The water content detection method is to compare the absorption coefficient of to-be-tested transformer oil with the standard curve so as to acquire the transformer oil water content. The method can reduce complexness of operation of detection on the transformer oil water content, increase detection efficiency and improve detection precision.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a transformer oil water content-absorption coefficient standard curve fitting method, a water content detection method, a device and a storage medium. Background technique [0002] The moisture content of transformer oil has a very important influence on the insulation performance of transformer oil, so it is necessary to accurately detect the moisture content of transformer oil. In the prior art, the water content of transformer oil is usually detected by Coulomb method, which uses chemical reagents such as pyridine, sulfur dioxide, iodine, and methanol in the measurement process. Considering that some chemical reagents are toxic to the human body and the measurement operation It is more complicated and generally can only be carried out in the laboratory, and changes in the measurement environment will inevitably lead to low accuracy of the measurement results. Contents o...

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Problems solved by technology

In the prior art, the water content of transformer oil is usually detected by Coulomb method, which uses chemical reagents such as pyridine, sulfur dioxide, iodine, and methanol in the measurement process. Considering that some chemical reagents are toxic to the human body and the measurement operation It is more complicated and generally can only be carried out in the laboratory, and changes in the measurement environment will inevitably lead to low accuracy of the measurement results

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