Aging Condition Quantitative Evaluation Method of Composite Insulators with NMR and FLIR

In this paper, the composite insulators with different operating times were used as samples. The relationship between transverse relaxation time, Si-CH3 absorption peak area and operating time was analyzed by NMR and IR spectroscopy. The normalized method was used to compare transverse relaxation time and Si-CH3 absorption peak area, where the results showed that the two have obvious linear correlation, reflecting the consistency of the aging of insulators. Finally, according to the hydrophobicity grade test, the aging grade of insulator samples was divided, and the mathematical statistics was used to calculate the aging grade division from the sample data, which provided a reference for the quantitative evaluation of the aging degree of the composite insulator.