Improved protection systems using symmetrical components

Author

Kojovic, Lj A. ; Witte, J.F.

Author_Institution

Cooper Power Syst., Franksville, WI, USA

Volume

1

fYear

2001

fDate

2001

Firstpage

47

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution Conference and Exposition, 2001 IEEE/PES

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-7285-9

Type

conf

DOI

10.1109/TDC.2001.971207

Filename

971207