00601naa#a2200181#i#450# EN\\bibl\52974 20250122185414.3 2223-9987 20220922b2022####ek#y0engy0150####ca RU Innovative Approach to the Creation of Power Transformer Theory Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2022 16 с. Journal article local Трансформаторы. 621.314.21 Shakirov M. A. Tkachuk A. A. itt-pgups.ru