Transformer is one of the main equipment in the power transmission and transformation system. Although its efficiency is very high, because of its large total capacity and more stages of transformation in the transmission and distribution system, its loss can take up the line. 17% of the total consumption. Although the capacity of a single medium and small distribution transformer is small, the number is large. Our country requires the promotion of the use of low-consumption transformers in the short term, so transforming high-consumption transformers has become an effective way to save energy and tap potential and improve economic benefits.
Generally speaking, there are four methods for energy-saving transformation of transformers: capacity reduction, capacity preservation, capacity increase and capacity adjustment.
(1) Winding reformation method: change the high and low voltage winding capacity reduction method, change the high and low voltage winding capacity adjustment method, change the high and low voltage winding drop and capacity adjustment method, change the high and low voltage winding capacity preservation method, and change the high and low voltage winding Quality method, change the high and low voltage winding capacity increase method.
(2) Iron core reforming method: replacing all core method, replacing part of core method, replacing part of core method, replacing all yoke method, replacing part of yoke method, increasing or decreasing core column series method, increasing or decreasing core diameter method, Single-chip overlapping iron core method, iron core silicon steel sheet overlap method, iron core silicon steel sheet re-insulation method.
(3) Winding and core full modification method: full modification winding, core increase method, full modification winding, core capacity preservation method, full modification winding, core reduction method.