DocumentCode
1052856
Title
A Half Cycle Bus Differential Relay and its Application
Author
Forford, T. ; Linders, J.R.
Author_Institution
ASEA
Issue
4
fYear
1974
fDate
7/1/1974 12:00:00 AM
Firstpage
1110
Lastpage
1120
Abstract
The principles of a new high speed bus differential relay which operates for an internal fault condition within 1 to 2 ms and initiates tripping of circuit breakers in about 7 ms is described. The relay is self-powered and requires no auxiliary voltage other than that needed for the output tripping and alarm functions. It is shown to be insensitive to remanence and saturation of current transformers and to systems fault levels and X/R ratios.
Keywords
Circuit faults; Couplers; Current transformers; Fault currents; Impedance; Power system protection; Power system relaying; Protective relaying; Relays; Testing;
fLanguage
English
Journal_Title
Power Apparatus and Systems, IEEE Transactions on
Publisher
ieee
ISSN
0018-9510
Type
jour
DOI
10.1109/TPAS.1974.294057
Filename
4075467
Link To Document