Oiled paper insulation aging diagnosis method based on fluorescence color

A technology of oil-paper insulation and diagnostic methods, which is applied in the directions of fluorescence/phosphorescence, material excitation analysis, and dielectric strength testing, etc. It can solve the problems of limited field application and difficulty in accurately separating moisture, aging, and loss of related characteristic quantities of dielectric response , to achieve the effect of convenient operation
CN113985218APending Publication Date: 2022-01-28CHONGQING UNIV +2
0 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2022-01-28

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention relates to a fluorescent color-based oil paper insulation aging diagnosis method. The method comprises the following steps of S1, simulating a thermal aging process of oil paper insulation in a transformer, carrying out an oil paper insulation accelerated thermal aging test by adopting insulating oil and aromatic amide insulating paper to simulate the thermal aging process of the oil paper insulation in the transformer, different aging times being selected for sampling testing; S2, extracting aged amide fibers in the insulating oil; S3, testing fluorescence color characteristics of the aged amide fibers in the insulating oil, testing optimal excitation and emission intensity characteristics of the aged amide fibers in the insulating oil at different aging times, and obtaining CIE coordinates of fiber samples at different aging times; and judging the aging degree of oil paper insulation by taking fluorescence colors of the fiber samples at different aging times as characteristic quantities. The method is advantaged in that correlation between the fluorescence characteristic and the aging degree is directly and observably reflected through color conversion, the method is clearer, simpler and more convenient, and the overall service life of the transformer is judged more accurately.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of liquid insulation, in particular to a method for diagnosing aging of oil-paper insulation based on fluorescent colors. Background technique

[0002] The life of paper insulation determines the overall life of the transformer, and the aging assessment of paper insulation is of great significance to the operation and maintenance, maintenance and decommissioning of transformers. The power transformer is the core equipment of the power system. It is connected with the power generation, transmission and distribution links in the power system. Its safe and stable operation determines the safety and reliability of the power grid. is of great significance. At present, many transformers in my country have been operating for more than 20 years, and some have even exceeded 30 years. The paper insulation of these transformers is aging, the mechanical and insulation performance is degraded, and the probability of tra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More