Single-phase transformer: transformer whose primary winding and secondary winding are both single-phase windings. In our country, single-phase transformer and single-phase power supply technology have been developing. As early as the late 1950s,
single-phase transformer was exported to foreign countries. Over the years, the development of science and technology has promoted the development of single-phase transformer. The application of coil core and amorphous core technology in single-phase transformer can greatly reduce the core loss of transformer.
According to the analysis, when the urban and rural power grid is rebuilt to a certain extent, the proportion of line loss in network loss will be greatly reduced, and the no-load loss of distribution transformer will occupy the main position of network loss. Only by substantially reducing core loss can the power loss of power grid be further reduced. Therefore, coiled core and amorphous core single-phase transformers have great potential for development.
(2) The significance of adopting this structure lies in:
First, use less material. The single-phase transformer with the same capacity is 20% less than the iron used in three-phase transformer and 10% less than the copper used in three-phase transformer. Especially when the coil core structure is used, the no-load loss of transformer can be reduced by more than 15%, and the optimal life cycle cost can be obtained.
Second, low investment in transmission lines. Using single-phase power supply system in power grid can save 33%-63% of conductors, 42% of conductor weight can be saved by calculating economic current density, and 66% of conductor consumption can be reduced by calculating mechanical strength.
Third, it is conducive to modern production. Because of its simple structure, single-phase transformer is suitable for large-scale modern production, which is conducive to improving product quality and efficiency.
