Improving the efficiency of power transformers by intensifying their cooling during operation

Objective . The aim of the study is to develop recommendations for optimizing cooling systems for power transformers in order to increase their efficiency and reduce losses during electric power transformation. Method . The study included a thermodynamic and comparative analysis of existing methods of cooling electric transformers in order to identify the advantages and disadvantages of cooling systems. Result . Various cooling schemes and transformation heat recovery systems are presented. It is substantiated that there are low-temperature systems that can significantly improve the technical characteristics of a transformer without resorting to such low temperatures. Considering the peculiarity of freon refrigeration machines, when a refrigerating agent, for example, R134a and lubricating oil mutually dissolve in each other, forming a "two-layer cake", and fill the entire refrigeration system, a transformer can be considered an element of a refrigeration machine (evaporator). Conclusion . The use of innovative cooling methods can significantly improve the efficiency of electric transformers while simultaneously increasing their efficiency.

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