Title :
Apparent impedance correlation of transient energy margin and time simulation
Author :
Vittal, V. ; Oh, T. ; Fouad, A.A.
Author_Institution :
Iowa State Univ., Ames, IA, USA
fDate :
5/1/1988 12:00:00 AM
Abstract :
A procedure was developed to relate the transient energy margin of a multimachine power system to the apparent impedance of a line protected by an out-of-step relay. In this procedure, only the multimachine system parameters are used, and the conventional intermediate step of forming a two-machine equivalent is eliminated. A technique for generating the swing impedance locus is described. The method is tested for a loss of generation disturbance on a 23-generator equivalent of the Florida Power & Light Co. network. The results obtained are compared with time simulation results
Keywords :
electric impedance; power systems; transients; apparent impedance; generation disturbance loss; impedance correlation; multimachine power system; out-of-step relay; swing impedance locus; time simulation; transient energy margin; Computational modeling; Equations; Error correction codes; Impedance; Power system dynamics; Power system simulation; Power system stability; Power system transients; Protection; Protective relaying;
Journal_Title :
Power Systems, IEEE Transactions on
