Title :
Case study into loss-of-excitation relays during simultaneous faults. II
Author :
Dias, M.F. ; Elkateb, M.M.
Author_Institution :
Power & Energy Syst. Group, Bath Univ., UK
Abstract :
The authors investigate the seen impedance by a loss-of-excitation (LOE) relay during simultaneous faults. The simultaneous fault condition considered is a single phase to earth fault on a 400 kV EHV transmission line and a double earth fault on the excitation system of a 600 MVA synchronous generator, which causes complete LOE. Simultaneous faults which include the excitation loss would develop a spiralling dynamic seen impedance trajectory
Keywords :
synchronous generators; 400 kV; 600 MVA; EHV transmission line; double earth fault; generator protection; loss-of-excitation relays; seen impedance; simultaneous faults; single phase to earth fault; spiralling dynamic seen impedance trajectory; synchronous generator; Computer aided software engineering; Earth; Impedance; Induction generators; Power system relaying; Protective relaying; Relays; Synchronous generators; Turbines; Voltage;
Conference_Titel :
AFRICON '92 Proceedings., 3rd AFRICON Conference
Conference_Location :
Ezulwini Valley
Print_ISBN :
0-7803-0835-2
DOI :
10.1109/AFRCON.1992.624514
