Title :
Transient response of interconnected power systems to single line-to-ground faults
Author :
Harrington, R.J. ; El-Mohr, Ibrahim M.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., George Washington Univ., Washington, DC, USA
Abstract :
An interconnected power system containing synchronous and induction machines has been simulated. The total fault current and the behavior of each machine have been calculated under single line-to-ground fault conditions for a fault time of 500 ms. The negative-sequence torque has been calculated for faulted and unfaulted machines. The results show the importance of the negative-sequence torque in decreasing the rotor swing amplitudes of synchronous machines during the fault period, while it has a deleterious effect on induction motor speeds which tend to run-down such that they may be unable to recover during the post-fault period
Keywords :
asynchronous generators; digital simulation; fault currents; machine theory; power system analysis computing; power system interconnection; power system transients; transient analysis; transient response; 500 ms; fault period; induction machines; interconnected power systems; motor speeds; negative-sequence torque; post-fault period; rotor swing amplitudes; single line-to-ground faults; synchronous machines; total fault current; transient response; Fault currents; Induction machines; Power system faults; Power system interconnection; Power system simulation; Power system transients; Rotors; Synchronous machines; Torque; Transient response;
Conference_Titel :
Circuits and Systems, 1993., Proceedings of the 36th Midwest Symposium on
Conference_Location :
Detroit, MI
Print_ISBN :
0-7803-1760-2
DOI :
10.1109/MWSCAS.1993.343109
