Title :
Improved protection systems using symmetrical components
Author :
Kojovic, Lj A. ; Witte, J.F.
Author_Institution :
Cooper Power Syst., Franksville, WI, USA
Abstract :
This paper presents an analysis that demonstrates how symmetrical components can improve protection system performance. A sensitivity analysis showing how phase and symmetrical component currents develop during faults is presented. Application of negative-sequence overcurrent elements for improved protection is described. A source-to-load coordination method is proposed and demonstrated using relay-relay, relay-recloser and recloser-fuse coordination examples
Keywords :
overcurrent protection; power system faults; power system protection; power system relaying; relay protection; sensitivity analysis; faults; negative-sequence overcurrent elements; phase currents; power network protection systems improvement; protection system performance; recloser-fuse coordination; relay-recloser coordination; relay-relay coordination; sensitivity analysis; source-to-load coordination method; symmetrical component currents; symmetrical components; Costs; Impedance; Performance analysis; Power system analysis computing; Power system faults; Power system protection; Power system relaying; Protective relaying; Sensitivity analysis; System performance;
Conference_Titel :
Transmission and Distribution Conference and Exposition, 2001 IEEE/PES
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-7285-9
DOI :
10.1109/TDC.2001.971207
