DocumentCode :
283701
Title :
Non-damage fuse operations on 11kV overhead lines
Author :
Aubrey, D.R.
Author_Institution :
Electr. Council Res. Centre, Capenhurst, Chester, UK
fYear :
1988
fDate :
1988
Firstpage :
42522
Lastpage :
42524
Abstract :
Most 11 kV overhead line fuses are connected to spurs beyond a ground mounted circuit-breaker or, beyond a pole mounted circuit-breaker that is being operated as a source circuit-breaker. Group fusing, as above, has replaced the use of fuses in series and, largely, the fusing of individual transformers. However, even with group-fusing and the wide implementation of auto-reclosing, most fuse operations are still nondamage. The task for the fuse is that it should operate when the circuit-breaker recloses if a fault remains on the spur. Simple as this seems, it requires the circuit-breaker to operate before the fuse for the first protection operation, but the fuse to operate before the circuit-breaker for the second. The difficulty of placing the fuse characteristic between the instantaneous and delayed characteristics of the circuit-breaker is discussed by the author
Keywords :
power overhead lines; power system protection; switchgear; 11 kV; HV fuses; circuit-breaker; fault; fuse characteristic; power overhead lines; power system protection; switchgear; transformers;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Improving Supply Security on 11kV Overhead Networks, IEE Colloquium on
Conference_Location :
London
Type :
conf
Filename :
209777
Link To Document :
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