A kind of transformer oil aging degree detection method, device and equipment

Abstract

The invention discloses a method for detecting the aging degree of transformer oil. Read the turbidity of the first test sample, send the first conveying instruction to the turbidimeter, make the first test sample enter the filter, and obtain the second test sample after filtering; send the second conveying instruction to the filter, so that the second test sample is The test sample enters the conductivity meter, and reads the conductivity of the second test sample; sends a third delivery instruction to the conductivity meter, so that the second test sample enters the infrared spectrometer, and reads the infrared spectrum of the second test sample; according to the turbidity A multi-dimensional array is established based on the degree, electrical conductivity and infrared spectrum, and the multi-dimensional array is dimensionally reduced to obtain the detection result. The method provided by the invention analyzes the aging degree of the transformer oil in real time according to the multi-dimensional data, and improves the accuracy of the detection result.

Description

technical field [0001] The invention relates to the technical field of transformer oil detection and analysis, in particular to a transformer oil aging degree detection method, device and equipment. Background technique [0002] Power transformers are the most critical and expensive equipment in power transmission and transformation equipment, and the reliability of their operation is directly related to the economic operation, safety and stability of the power grid. Most of the transformer accidents are caused by the deterioration of its insulation performance, and transformer oil, as the main component of the transformer insulating material, has a crucial impact on the life of the transformer. Transformer oil is a mineral insulating oil after refining and processing petroleum products. Its main components are alkanes, naphthenes and aromatic hydrocarbons, mainly hydrocarbons. Transformer oil is the main liquid insulating medium used for insulation, cooling and arc extingu...

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Problems solved by technology

However, with the prolongation of operation time, the transformer oil will oxidize and age, and generate free radicals, alcohols, aldehydes, ketones and other degradation products, which seriously affect the insulation performance of transformer oil.

For a transformer with an average service life of about 30 to 40 years, the oxidation and aging phenomenon of transformer oil will bring serious safety hazards to the safe and stable operation of the transformer.

[0003] In the prior art, when measuring the aging degree of transformer oil, the methods adopted mainly include the acid value measurement method of insulating oil, the oil surface tension test method and the infrared spectrometer test method; among them, the acid value measurement of insulating oil and the oil surface tension test need to be carried out in During the test, the insulating oil samples were taken from the transformer and sent to the laboratory for physical and chemical property analysis, which could not be detected in real time; at the same time, because the oil samples were exposed to the air, they would be further oxidized and aged, and the oil samples were easily contaminated during transportation, which would affect Accuracy of detection results; compared with the previous two methods, although the infrared spectrometer test method can be detected online in real time, it cannot fully reflect the transformer oil due to the single reference quantity selected, that is, only based on the spectral data of transformer oil or gas as the detection index. The true degree of aging, the accuracy of the test results needs to be considered

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