Time-scale decomposition in voltage stability analysis of power systems

Author

Vournas, C.D. ; Sauer, P.W. ; Pai, M.A.

Author_Institution

Lab. of Electr. Energy Syst., Nat. Tech. Univ. of Athens, Greece

Volume

4

fYear

1995

fDate

13-15 Dec 1995

Firstpage

3459

Abstract

Singular perturbation analysis is applied to a number of power system problems related to voltage stability: 1) the generator dynamics in a multimachine power system are accurately decomposed into voltage and frequency (electromechanical) dynamics; 2) the quasi-steady state representation of generators for the simulation of slow voltage transients is explained and justified; and 3) the singularity of algebraic constraints leading to what is called “loss of causality” is found to be equivalent to the instability of faster, unmodeled dynamics of network and loads

Keywords

dynamics; perturbation techniques; power system stability; time-domain analysis; transient analysis; transient response; voltage control; algebraic constraints; frequency dynamics; generator dynamics; instability; multimachine power system; power systems; singular perturbation analysis; state representation; time-scale decomposition; voltage dynamics; voltage stability; voltage transients; Analytical models; Frequency; Power generation; Power system analysis computing; Power system dynamics; Power system simulation; Power system stability; Power system transients; Stability analysis; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 1995., Proceedings of the 34th IEEE Conference on

Conference_Location

New Orleans, LA

ISSN

0191-2216

Print_ISBN

0-7803-2685-7

Type

conf

DOI

10.1109/CDC.1995.479120

Filename

479120