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Raman spectrum-based aging diagnosis method for oil-paper insulation equipment

A technology of Raman spectroscopy and oil-paper insulation, applied in the direction of testing dielectric strength, etc., can solve the problems of multi-preprocessing work and long time consumption, and achieve the elimination of preprocessing work, small environmental factors, and efficient and time-saving diagnostic methods Effect

Active Publication Date: 2021-03-26
CHONGQING UNIV +1
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  • Application Information

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Problems solved by technology

[0004] At present, the methods for detecting the aging state of oil mainly include high performance liquid chromatography (HPLC), gas chromatography (GC), etc., but these methods can only measure limited samples, and require a lot of pretreatment work, which is time-consuming. long

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  • Raman spectrum-based aging diagnosis method for oil-paper insulation equipment
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  • Raman spectrum-based aging diagnosis method for oil-paper insulation equipment

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Embodiment Construction

[0057] The application will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present application.

[0058] The invention discloses a method for diagnosing the aging of oil-paper insulation equipment based on Raman spectroscopy. The method includes:

[0059] Step A: Establish the corresponding relationship between the aging stage and the degree of polymerization of the oil-paper insulation aging sample: Obtain the oil-paper insulation aging sample through the oil-paper insulation thermal aging experiment, periodically interrupt the heating according to the set sampling time, and measure the degree of polymerization after cooling;

[0060] Step B: Obtain the Raman spectral data of the aging oil sample in the known aging stage in step A, standardize the data, and screen the information bands accordi...

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Abstract

The invention provides a Raman spectrum-based aging diagnosis method for oil-paper insulation equipment. According to the method, a large number of oil-paper insulation aging samples are obtained through an accelerated thermal aging experiment, and the polymerization degree of the aging sample insulation paper is measured, so that the corresponding relation between the aging stage and the polymerization degree of the oil-paper insulation aging samples is established; therefore, the aging stages of the to-be-detected insulation sample are classified and returned quickly and effectively, so thatthe real-time diagnosis of the aging condition of the oiled paper insulation equipment is realized. The diagnosis method is efficient and time-saving, the pretreatment work of chromatography is omitted, the model does not need to be trained, and non-contact continuous measurement can be realized; besides, influence of environmental factors is low and online monitoring is easy to realize.

Description

technical field [0001] The invention belongs to the field of electric equipment safety state assessment, and in particular relates to a method for diagnosing the aging of oil-paper insulation equipment based on Raman spectroscopy. Background technique [0002] Oil-paper composite insulation is an important and excellent insulation combination method, which has been widely used in large transformers, bushings, transformers, capacitors, cables and other power equipment. During the operation of oil-paper insulated power equipment, its oil-paper insulation has been subjected to various external stresses such as heat, electricity, machinery, and chemistry for a long time, resulting in a gradual decline in its own insulation and mechanical properties, and equipment aging problems. Cause equipment failure and affect the reliable operation of the power system. Therefore, accurately diagnosing the aging degree of oil-paper insulation materials and timely grasping the insulation agin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/12
Inventor 陈伟根周永阔陈钰杨定坤韩丙光万福史海洋王希若王泽伟张薷月
Owner CHONGQING UNIV