DocumentCode :
2281956
Title :
Fault induced conductor motion
Author :
Ward, D.J. ; Bruce, J.D.
Author_Institution :
Dominion Virginia Power, Richmond, VA
fYear :
2007
fDate :
22-25 March 2007
Firstpage :
488
Lastpage :
492
Abstract :
In utility protective relaying, faults or short-circuits on overhead distribution lines frequently cause conductor movement, which results in a subsequent fault closer to the source. Very often a backup protective device operates for these conditions leading to the suspicion that the coordination of the protective devices is improper. Under phase-to-phase faults, the more frequent situation involving this phenomenon, the conductors are forced apart by the short-circuit forces. Even though the closest protective device (recloser) operates, the conductor motion often bring the conductors together. Thus, one would get a recloser operation as well as a circuit breaker operation. In some cases, the circuit breaker locks out for this situation. As a result, a much larger area is interrupted. This paper builds upon a modeling effort to match what happens in the field and to determine what remedies have the best chance of success in dealing with fault-induced conductor motion (FICM). The authors investigated some real-world examples that occurred on the distribution system and evaluated alternatives to deal with them.
Keywords :
fault diagnosis; overhead line conductors; power distribution faults; FICM; fault induced conductor motion; power distribution system; Circuit breakers; Circuit faults; Conductors; Digital relays; Electromagnetic forces; Fault currents; Power distribution lines; Protective relaying; Substation protection; USA Councils;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
SoutheastCon, 2007. Proceedings. IEEE
Conference_Location :
Richmond, VA
Print_ISBN :
1-4244-1029-0
Electronic_ISBN :
1-4244-1029-0
Type :
conf
DOI :
10.1109/SECON.2007.342950
Filename :
4147480
Link To Document :
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