Transformer oil leakage detection method based on terahertz time-domain spectroscopy technology

Abstract

The application discloses a transformer oil leakage detection method based on a terahertz time-domain spectroscopy technology. The method comprises the following steps of establishing a standard database, measuring terahertz time-domain spectrums of an unused oil absorption test paper and the oil absorption test paper coated with the transformer oil, and establishing a spectrum comparison databaseof a reference sample; obtaining a sample spectrum: taking the unused oil absorption test paper as a sample oil absorption test paper, pasting the sample oil absorption test paper on the surface of ato-be-detected part, keeping the sufficient contact of the surface of the test paper and the to-be-detected part, and measuring the terahertz time-domain spectrum of the sample oil absorption test paper; and judging: comparing the characteristic absorption peak of the terahertz time-domain spectrum of the sample oil absorption paper with the standard database, and judging whether the abnormal dirt accumulation part of the transformer has oil gas leakage or not. Through the transformer oil leakage detection method disclosed by the invention, the accurate and effective oil gas leakage detectioncan be realized at the abnormal dirt accumulation part of the oil-immersed transformer by adopting the terahertz time-domain spectroscopy technology.

Description

technical field [0001] The present application relates to the technical field of transformers, in particular to a transformer oil leakage detection method based on terahertz time-domain spectroscopy technology. Background technique [0002] Immersed transformers are widely used in metallurgy, machinery, chemical industry and power transmission and transformation because of their advantages such as low manufacturing cost, high overload capacity and large environmental adaptability. transformer. In the actual operation process, oil-immersed transformers will experience oil leakage or dripping in different degrees due to the influence of multiple factors such as working environment, load status, and later maintenance. [0003] The leakage of transformer oil is more harmful than the leakage of other equipment media. On the one hand, the main components of transformer oil are alkanes, naphthenic saturated hydrocarbons, aromatic unsaturated hydrocarbons and other compounds. Oil ...

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Problems solved by technology

[0006] This application provides a transformer oil leakage detection method based on terahertz time-domain spectroscopy technology to solve the technical problem that it is difficult to accurately judge the slight oil and gas leakage of transformers

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