A novel transfer switching strategy of solid static for duplex feeding

Voltage sag has become the main culprit to high quality power supply. Solid Static Transfer Switch (SSTS) for duplex feeding is a kind of power device which can effectively alleviate the voltage sags. SSTS will switch sensitive loads to the alternate source with better power quality when the preferr...

Full description

Saved in:
Bibliographic Details
Published in2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT) pp. 558 - 562
Main Authors Yao Shu-jun, Wang Yan, Wang Quan-tao, Han Min-xiao
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2011
Subjects
Commutation and Gating Strategy
Power quality
Solid Static Transfer Switch
Switches
Thyristors
Transfer Time
Voltage control
Voltage fluctuations
Voltage Sags(Dips)
Online AccessGet full text

Cover

More Information
Summary:Voltage sag has become the main culprit to high quality power supply. Solid Static Transfer Switch (SSTS) for duplex feeding is a kind of power device which can effectively alleviate the voltage sags. SSTS will switch sensitive loads to the alternate source with better power quality when the preferred source is suffering voltage sags or interruption. In this paper, the operational principle of SSTS is introduced at first. The dq transfer + low frequency pass filter will be employed for voltage sag detection. The detection technique finds a balance between the fast response and robustness. Authors will give a novel switching technique to speed up the switching performance based on forced commutating and thyristor voltage detection. Finally, the validity and efficiency of the strategy is verified by using the electromagnetic transients simulation. The switching period can be limited within 5 ms which will not cause malfunction of sensitive loads.
ISBN:9781457703645
1457703645
DOI:10.1109/DRPT.2011.5993955