The paper presents a scientific comparative analysis of the development of the dielectric medium of transformer electrical equipment, its consistent evolution in the direction of energy efficiency, technical safety and environmental acceptability. Dielectric media in the form of mineral oil, synthetic oil, sulphur hexafluoride and liquid nitrogen are consistently considered on the basis of a historical excursion. Currently, mineral oil occupies a dominant position as a dielectric medium in medium-and high-power power transformers. Its role in transformer electrical equipment is very large, since it is used as insulation due to its high dielectric properties, it provides heat removal from electrical windings. However, the fire and explosion hazard, as well as the environmental impact on the habitat, requires its improvement as a dielectric. In this regard, dielectric media in the form of synthetic MIDDLe oil and sulfur hexafluoride are also presented. It is shown that the dielectric medium in the form of liquid nitrogen has significant advantages, since it allows approximately three times the weight and size parameters of transformer equipment. Along with this, with liquid nitrogen, fire and explosion hazards are excluded and environmental safety requirements are met. At the same time, it is indicated that liquid nitrogen can be obtained in a fairly simple way from the air. This is especially important for autonomous and transport power supply systems.
Comparative Analysis of Dielectric Medium of Transformer Electrical Equipment
Lect. Notes in Networks, Syst.
International Scientific Siberian Transport Forum ; 2021 May 11, 2021 - May 14, 2021
International Scientific Siberian Transport Forum TransSiberia - 2021 ; Chapter : 101 ; 912-920
2022-03-18
9 pages
Article/Chapter (Book)
Electronic Resource
English
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