Oil paper insulation equipment aging state identification method based on Raman spectrum clustering analysis

Abstract

The invention provides an oil-paper insulation equipment aging state identification method based on Raman spectrum clustering analysis. The method comprises the following steps: respectively acquiringa plurality of oil-paper insulation samples of a known aging stage and an unknown aging stage through an oil-paper insulation thermal aging experiment; acquiring Raman spectrum data of a plurality ofoil paper insulation samples in a known aging stages and unknown aging stage, and carrying out standardization processing; adopting a principal component analysis method to extract Raman spectrum characteristic quantity of the standardized oiled paper insulation samples in the known aging stage, and establishing an oiled paper insulation aging evaluation model based on a clustering analysis method; and inputting the Raman spectrum characteristic quantity of the oiled paper insulation sample in the unknown aging stage into the model for clustering analysis to obtain the aging stage of the oiled paper insulation sample in the unknown aging stage. According to the invention, on the basis of Raman spectrum measurement, the oilpaper insulation aging evaluation model is established, aging stateanalysis is carried out, and diagnosis of the overall aging state of the on-site oilpaper insulation equipment can be rapidly and effectively realized.

Description

technical field [0001] The invention relates to the technical field of electrical equipment safety state assessment, in particular to a method for identifying the aging state of oil-paper insulation equipment based on Raman spectrum cluster analysis. Background technique [0002] The safe and reliable operation of electrical equipment is the first line of defense to avoid major accidents in the power grid, and oil-paper insulation equipment is an important part of the power grid. The long-term operation of oil-paper insulation equipment will cause the aging of Karamay No. 25 mineral oil paper, which will easily 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 aging status of oil-paper insulation equipment can provide a basis for the insulation status and life cycle management of oil-paper insulation equipment and ensure the safe operation ...

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Problems solved by technology

[0005] The invention provides a method for identifying the aging state of oil-paper insulation equipment based on Raman spectrum cluster analysis, which utilizes the superiority of cluster analysis in dealing with uncertain and inaccurate problems, and combines Raman spectrum to classify oil-paper insulation samples , to solve the problems in the prior art that the specific aging stage of the oil-paper insulation sample cannot be accurately obtained and the aging state of the oil-paper insulation equipment in practical applications cannot be judged

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