DocumentCode
915687
Title
An adaptive scheme for digital protection of power transformers
Author
Girgis, Adly A. ; Hart, David G. ; Chang, W. Bin
Author_Institution
Dept. of Electr. & Comput. Eng, Clemson Univ., SC, USA
Volume
7
Issue
2
fYear
1992
fDate
4/1/1992 12:00:00 AM
Firstpage
546
Lastpage
553
Abstract
The development of an adaptive scheme for digital differential protection of power transformers is described. The transformer status is monitored to decide if the transformer is disconnected or is in normal operating condition. When the transformer is energized, a two-state Kalman filter model monitors the transformer during normal operating conditions. The current transformer ratios and tap values are included in the algorithm to obtain an adaptive percentage differential characteristic. This adaptive scheme was tested on data obtained in the laboratory and proved to be highly accurate and fast
Keywords
power transformers; transformer protection; adaptive scheme; current transformer ratios; differential protection; digital protection; power transformers; transformer monitoring; transformer tap values; two-state Kalman filter model; Computerized monitoring; Condition monitoring; Current transformers; Digital relays; Filtering; Kalman filters; Power harmonic filters; Power transformers; Protective relaying; Surge protection;
fLanguage
English
Journal_Title
Power Delivery, IEEE Transactions on
Publisher
ieee
ISSN
0885-8977
Type
jour
DOI
10.1109/61.127047
Filename
127047
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