DocumentCode
1247025
Title
Before and during voltage sags
Author
Carlsson, Fredrik
Author_Institution
KTH, Stockholm, Sweden
Volume
11
Issue
2
fYear
2005
Firstpage
39
Lastpage
46
Abstract
The relationship between the voltages and the tripping level for line-operated synchronous machines is discussed. Voltage sags may cause tripping and large torque peaks in electrical machines. Tripping is caused by undervoltage protection or overcurrent protection. The ability to keep synchronism for the synchronous machines is mostly related to the loading of the machine and not very related to the voltage before and after the voltage sag.
Keywords
overcurrent protection; power supply quality; synchronous machines; line-operated synchronous machines; machine loading; overcurrent protection; synchronism; torque peaks; tripping; undervoltage protection; voltage sags; Industrial relations; Lightning; Power quality; Pressing; Protection; Shafts; Shape; Synchronous machines; Torque; Voltage fluctuations;
fLanguage
English
Journal_Title
Industry Applications Magazine, IEEE
Publisher
ieee
ISSN
1077-2618
Type
jour
DOI
10.1109/MIA.2005.1405825
Filename
1405825
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