DocumentCode :
998137
Title :
Combined use of definite and inverse time overcurrent elements assists in transmission line ground relay coordination
Author :
Henville, C.F.
Author_Institution :
BC Hydro, Vancouver, BC, Canada
Volume :
8
Issue :
3
fYear :
1993
fDate :
7/1/1993 12:00:00 AM
Firstpage :
925
Lastpage :
932
Abstract :
In some cases the coordination of ground time overcurrent relays in transmission line protection applications can be difficult. The combined use of definite and inverse time overcurrent characteristics sometimes provides significantly improved protection speed and sensitivity. Two cases are discussed where the use of hybrid characteristics has achieved improvements. The application of hybrid characteristics is limited by difficulties in dynamic coordination. The technology to overcome the dynamic problems would appear to be technically feasible.<>
Keywords :
earthing; overcurrent protection; power system protection; power transmission lines; relay protection; applications; definite time overcurrent; ground relay coordination; hybrid characteristics; inverse time overcurrent; power system protection; sensitivity; speed; transmission line;
fLanguage :
English
Journal_Title :
Power Delivery, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8977
Type :
jour
DOI :
10.1109/61.252619
Filename :
252619
Link To Document :
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