E3S Web Conf.
Volume 216, 2020Rudenko International Conference “Methodological problems in reliability study of large energy systems” (RSES 2020)
|Number of page(s)||5|
|Published online||14 December 2020|
Application of IR spectroscopy to control oxidation inhibitor (ionol) concentration in mineral transformer oils
1 Kazan State Power Engineering University, Department of Electric Power Systems and Networks, 420066 Kazan, Krasnoselskaya str., 51, Russia
2 Yamalo-Nenetsky PMES - branch of Federal Grid Company of Unified Energy System, Chemical laboratory diagnostic service, 629800 Noyabrsk, Enthusiasts str., 10, Russia
3 EC «Energoprogress», Department of electrical equipment, 420080 Kazan, Volgogradskaya, str., 34, Russia
* Corresponding author: firstname.lastname@example.org
Mineral insulating oils used as dielectric and heat dissipating agent in high voltage oil-filled equipment are subject to oxidation. Oxidation results in the appearance of undesirable substances that reduce the electrical insulating properties of liquids. Therefore, to inhibit the oxidation process, an antioxidant additive is introduced into transformer oils. In the overwhelming majority, 2,6-di-tert-butyl-4-methylphenol (ionol) is used as an inhibitor. Residual concentration of ionol is a regularly monitored parameter. In Russia, the main method for determining the concentration of ionol in oil is gas chromatography. However, fourier-transform infrared spectroscopy should be considered as an alternative method for monitoring the ionol content as it has a number of advantages over the gas chromatographic method. The paper compares the results of the determination of ionol in operational transformer oils using gas chromatography and the IR method. We justified that the method of IR spectroscopy has no limitations as applied to oils from power transformers equipped with adsorption purification systems.
© The Authors, published by EDP Sciences, 2020
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