Phase-Shifting Transformer tests
A phase-shifting transformer is a specific form of electrical transformer used to manage the flow of active power on 3Ø electric transmission lines. It is often called a phase angle regulating (PAR) in the US and a quadrature booster in the UK. In this application note, we will use the phase-shifting (PST) term. Physically, phase-shifting transformers are static machines whose general construction characteristics are in some respects similar to conventional transformers with two separate transformers: A Shunt unit or Exciting unit (EU) and a series unit (SU). Due to their internal connections, they make it possible to obtain a phase shift between the input and output voltages. The phase shift between the input and output [...]