LUMINESCENT PROPERTIES OF TRANSFORMER OIL DURING ITS PURIFICATION

Abstract

The adsorption method makes it possible to regenerate transformer oil with great efficiency, while constant monitoring of its parameters is necessary. The method of optical spectral luminescent diagnostics is promising. (Research purpose) The research purpose is studying the spectral luminescent characteristics of various transformer oil during its purification. (Materials and methods) A study of the spectral luminescent characteristics of transformer oil was carried out on a multifunctional spectrofluorimeter device «Fluorat-02-Panorama» with the Rapogama Rgo software installed on a laptop and an external dark camera for the study of oil samples. The spectral characteristics of excitation and luminescence of spent and regenerated GC transformer oil were measured using a diffraction spectrofluorimeter. Integral energy and static parameters of the spectra were calculated. (Results and discussion) It was determined that during oil regeneration, the maxima of the excitation spectrum at wavelengths of 355, 396 and 443 nanometers significantly increase. It has been shown that the greatest absorption capacity is observed in the area of 370-428 nanometers. It was found that for λb = 396 nanometers, the luminescence of the purified oil is greater than for λb = 355 nanometers. It was found that the statistical parameters of crude oil differ markedly from the parameters of regenerated oils (this trend is observed for both excitation and photoluminescence spectra), the statistical parameters of regenerated oil differ slightly among themselves. It was noted that all the spectra have a right-sided asymmetry. (Conclusions) Indicated that photoluminescence of transformer oil during purification at an excitation wavelength of 396 nanometers is the most suitable for diagnostics. It was stated that the results obtained can be used in the development of an optoelectronic quality control system for transformer oil purification.