DocumentCode
1540770
Title
A current-based solution for transformer differential protection. I. Problem statement
Author
Guzmán, Armando ; Zocholl, Stan ; Benmouyal, Gabriel ; Altuve, Héctor J.
Author_Institution
Schweitzer Eng. Labs., Pullman, WA, USA
Volume
16
Issue
4
fYear
2001
fDate
10/1/2001 12:00:00 AM
Firstpage
485
Lastpage
491
Abstract
This paper analyzes the problem of transformer differential protection. First, the authors review the concept of transformer differential protection. They then analyze magnetizing inrush, overexcitation and current transformer (CT) saturation phenomena as possible causes of relay misoperation. Finally, they summarize the existing methods for discriminating internal faults from inrush and overexcitation conditions
Keywords
current transformers; magnetisation; power system faults; power system protection; power system relaying; power transformer protection; relay protection; current transformer saturation; current-based transformer differential protection; inrush conditions; internal faults discrimination; magnetizing inrush; overexcitation conditions; problem statement; relay misoperation; Circuit faults; Current transformers; Magnetic analysis; Magnetic flux; Power system harmonics; Power system protection; Power transformers; Protective relaying; Relays; Surge protection;
fLanguage
English
Journal_Title
Power Delivery, IEEE Transactions on
Publisher
ieee
ISSN
0885-8977
Type
jour
DOI
10.1109/61.956726
Filename
956726
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