Title :
Intelligent reclosing for overdutied breakers
Author :
Apostolov, A.P. ; Bronfeld, J.D. ; Feltis, M.W.
Author_Institution :
New York State Electr. & Gas Corp., Binghamton, NY, USA
Abstract :
The increase in power system fault current magnitudes above the derated breaker interrupting capability requires the use of circuit breaker replacement, current limiting devices, changes in system configuration, etc. All the above solutions to the overdutied circuit breaker problem are very expensive. This paper demonstrates that by applying a combination of breaker trip with fault current control and adjusting the number of reclosing shots as a function of the fault current magnitude, breakers overdutied by fault currents between the derated and 100% of the breaker interrupting capability do not need replacement. This approach was applied in New York State Electric and Gas (NYSEG)´s system for about 30 overdutied circuit breakers
Keywords :
circuit breakers; electric current control; fault currents; intelligent control; microcomputer applications; power system computer control; power system protection; programmable controllers; relay control; relay protection; breaker trip; circuit breaker; fault current control; intelligent reclosing; interrupting capability; microprocessor relays; overduty; power system fault currents; programmable logic controllers; reclosing shots; Circuit faults; Current limiters; Fault currents; IEEE members; Logic devices; Programmable logic arrays; Programmable logic devices; Relays; Substations; Transformers;
Conference_Titel :
Transmission and Distribution Conference, 1994., Proceedings of the 1994 IEEE Power Engineering Society
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-1883-8
DOI :
10.1109/TDC.1994.328389
