A new hybrid SVC scheme with Scott transformer for balance improvement
A new hybrid SVC scheme with Scott transformer for balance improvement
- Neue Suche nach: Chu, Wen-Shyan
- Neue Suche nach: Gu, Jyh-Cherng
- Neue Suche nach: Chu, Wen-Shyan
- Neue Suche nach: Gu, Jyh-Cherng
Due to the dynamic characteristics of traction load and unevenly train dispatch schedule, the unbalances currents are generally presented at point of common coupling (PCC). To suppress the degree of unbalance, a specially connected transformer or/and reactive power compensation device can be applied. Traditionally, a phase-shifted Scott transformer type SVC was installed in front of Scott connection transformer to improve the voltage fluctuation which is caused by high speed railway (HSR) systems. However, this solution is the most effective only in case that the power factor angle of each phase load equals pi /6 lagging; otherwise, a quite severe negative sequence current still presented at PCC. In this investigation, a new hybrid SVC scheme is proposed to improve this disadvantage. The results show that the proposed scheme can effectively restrict the negative sequence current to zero no matter what power factor of traction load.
Dokumentinformationen
A new hybrid SVC scheme with Scott transformer for balance improvement
2006
8 Seiten, 11 Quellen
Aufsatz (Konferenz)
Englisch
Ähnliche Titel
JRC2006-94005 A New Hybrid SVC Scheme With Scott Transformer for Balance Improvement
| British Library Conference Proceedings | 2006
Online Contents | 1997