Title :
A study on the effect of the Scott transformer on the three-phase unbalance in distribution network with single-phase generators
Author :
Aihara, Yasuko ; Miyazawa, Ryo ; Koizumi, Hirotaka
Author_Institution :
Dept. of Electr. Eng., Tokyo Univ. of Sci., Tokyo, Japan
Abstract :
Global environmental problem and the resources problem are getting more important. It is expected that dispersed power systems are spread widely. On the other hand, the increase of the dispersed generators may cause the three-phase unbalance in a distribution network. This study focuses on the possibility of the Scott transformer to reduce the three-phase unbalance in the distribution system. The Scott transformer transforms three phases to two phases. It has been used as a feeding transformer in electric traction system. The difference of behavior between the distribution systems with the Scott transformer and the V-connected transformer is observed in simulation with PSIM. For the secondary side loads of the transformer, resistive loads and dispersed generations are given under the balanced/unbalanced three-phase condition. The simulation results show that the Scott transformer has a better effect on a current and a voltage balancing than the V-connected transformer.
Keywords :
distributed power generation; distribution networks; electric generators; power transformers; traction; PSIM; Scott transformer; V-connected transformer; balanced-unbalanced three-phase condition; current balancing; dispersed generators; dispersed power systems; distribution network; electric traction system; feeding transformer; global environmental problem; resistive loads; resources problem; single-phase generators; three-phase unbalance; voltage balancing; Distributed power generation; Integrated circuit modeling; Joining processes; Load modeling; Phase transformers; Power electronics; Resistance; Scott transformer; Three-phase unbalance; V-connected transformer; power distribution network;
Conference_Titel :
Power Electronics for Distributed Generation Systems (PEDG), 2012 3rd IEEE International Symposium on
Conference_Location :
Aalborg
Print_ISBN :
978-1-4673-2021-4
Electronic_ISBN :
978-1-4673-2022-1
DOI :
10.1109/PEDG.2012.6254015