Multimachine eigenvalue sensitivities of power system parameters

Author

Wang, K.W. ; Chung, C.Y. ; Tse, C.T. ; Tsang, K.M.

Author_Institution

Dept. of Electr. Eng., Hong Kong Polytech., China

Volume

15

Issue

2

fYear

2000

fDate

5/1/2000 12:00:00 AM

Firstpage

741

Lastpage

747

Abstract

Many publications have discussed the design/tuning of controllers (e.g. PSS) to increase system damping, but the effect of general system parameters appears to be ignored. This paper enables these effects to be accurately assessed by the first and second order eigenvalue sensitivities with respect to any arbitrary system operating parameter (e.g. nodal injection, PV-voltage) or power network parameter (line impedance or transformer tap etc). Based on a highly versatile multimachine modeling technique that any practical system components (such as generators, SVC, series compensator etc) can be incorporated, the system matrix A can be expressed as a function of each system parameter of a multimachine system. The sensitivity approach is applied on an 8-machine system to discuss the system parameter effects and to take account of the range of operating condition in terms of multi-load levels by a probabilistic approach

Keywords

eigenvalues and eigenfunctions; matrix algebra; power systems; sensitivity analysis; 8-machine system; PV-voltage; SVC; controllers design; controllers tuning; dynamic stability; first order eigenvalue sensitivities; generators; line impedance; multi-load levels; multimachine eigenvalue sensitivities; multimachine modeling technique; multimachine system; nodal injection; power network parameter; power system parameters; probabilistic approach; second order eigenvalue sensitivities; sensitivity approach; series compensator; system matrix; system parameter effects; transformer tap; Control systems; Damping; Eigenvalues and eigenfunctions; Equations; Impedance; Power system analysis computing; Power system dynamics; Power system modeling; Power systems; State-space methods;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.867168

Filename

867168