DocumentCode
1410310
Title
Large mill power outages caused by potential transformer ferroresonance
Author
Crane, D. Ray ; Walsh, George W.
Author_Institution
Weyerhauser Paper Co., Columbus, MS, USA
Volume
24
Issue
4
fYear
1988
Firstpage
635
Lastpage
640
Abstract
Investigative procedures relating to a subtle 30 Hz ferroresonant instability of high-voltage potential transformers, which has caused several costly power outages to a large paper mill are reported. Included are unusual field oscillograms of this instability. Corrective measures were developed which have been implemented. An alternate recommended approach is to be incorporated in a similar high-voltage supply to a new mill to eliminate this instability as a possible jeopardy to selective ground-relay protection
Keywords
paper industry; potential transformers; power transformers; 30 Hz; field oscillograms; ground-relay protection; instability; paper mill; potential transformer ferroresonance; power outages; power transformers; Circuit faults; Ferroresonance; Milling machines; Petroleum; Power system protection; Power system relaying; Protective relaying; Relays; Voltage control; Voltage transformers;
fLanguage
English
Journal_Title
Industry Applications, IEEE Transactions on
Publisher
ieee
ISSN
0093-9994
Type
jour
DOI
10.1109/28.6115
Filename
6115
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