Overview and structural principle of Scott Transformer

Overview of Scott Transformers:

The Scott transformer is a 3-phase to 2-phase transformer. The structure capacity of the low-voltage winding is the same as that of two ordinary single-phase transformers of the same capacity. The transformer connected by Scott is a special transformer usually composed of two single-phase transformers. .

Scott Transformer Structural Features:

The transformer connected by Scott is a special transformer usually composed of 2 single-phase transformers. The end of the high-voltage winding of one transformer is connected to the center of the other high-voltage winding to form a 3-phase "T" junction. High-voltage windings. Each low-voltage winding is a simple single-phase winding, and there is no electrical connection between them. Their voltage and current are the same as ordinary single-phase transformers. But each high-voltage winding and current are different from ordinary single-phase transformers.

Its main principle:

The transformer connected by Scott is usually composed of 2 single-phase transformers. The end of the primary winding of one transformer is connected to the center of the primary winding of another transformer to form a T-connected 3-phase primary winding. This connection The 2 single-phase transformers can be used as 3-phase 2-phase transformers. These 2 single-phase transformers, the former is called a teaser transformer, referred to as a ladder or T change, and the latter is called a main (Main) ) transformer, referred to as the main transformer or M transformer. The inverse Scott transformer is to connect its 2 single-phase power supply to the Scott transformer 2 single-phase power supply or other 2 single-phase power supplies with a phase difference of 90 degrees, which is about to be in the station. The 27.5KV 2-phase power supply output by the traction transformer is converted into a transformer of 3-phase symmetrical power supply.