DocumentCode
1165259
Title
A Microprocessor Based Three-Phase Transformer Differential Relay
Author
Thorp, J.S. ; Phadke, A.G.
Author_Institution
Cornell University
Issue
2
fYear
1982
Firstpage
426
Lastpage
432
Abstract
This paper presents an algorithm for digital protection of a three-phase, three-winding power transformer. Simple recursive expressions are given for the harmonics using a sampling rate of 12 times a cycle. These expressions are used as the basis for a one cycle algorithm which is compatible with proposed digital line protection schemes. The algorithm was tested on data obtained from a model transformer. Test results are given for 19 cases of energizations and faults.
Keywords
Circuit faults; Current transformers; Microprocessors; Phase transformers; Power system protection; Power transformers; Protective relaying; Relays; Substations; Surge protection;
fLanguage
English
Journal_Title
Power Apparatus and Systems, IEEE Transactions on
Publisher
ieee
ISSN
0018-9510
Type
jour
DOI
10.1109/TPAS.1982.317124
Filename
4111342
Link To Document