Design of a robust power system stabilizer over a wide range of load characteristics

Author

Reza, Mohammad A. ; Choudry, M.A.

Author_Institution

Dept. of Electr. & Comput. Eng., West Virginia Univ., Morgantown, WV, USA

fYear

1990

fDate

15-16 Oct 1990

Firstpage

8

Lastpage

13

Abstract

The authors present a novel method for designing a power system stabilizer to improve the dynamic stability of AC power systems. the static load is modeled as a nonlinear function of load bus voltage and the dynamic load is modeled by an equivalent induction motor load. The rotor speed and angle deviations of the synchronous generator are used as a stabilizing signal to the power system stabilizer (PSS). The stabilizer gains are selected based on the eigenvalue sensitivity of electromechanical mode of the closed loop system with respect to the load characteristics. Eigenvalue analysis and simulation results show that the proposed PSS improves the system response over a wide range of load characteristics

Keywords

closed loop systems; control system synthesis; eigenvalues and eigenfunctions; induction motors; power system control; sensitivity; stability; synchronous generators; AC; PSS; angle; bus voltage; closed loop system; control system synthesis; dynamic stability; eigenvalue sensitivity; eigenvalues; equivalent induction motor load; load characteristics; power system stabilizer; response; rotor; synchronous generator; Design methodology; Eigenvalues and eigenfunctions; Load modeling; Nonlinear dynamical systems; Power system dynamics; Power system modeling; Power system simulation; Power system stability; Power systems; Robustness;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Symposium, 1990., Proceedings of the Twenty-Second Annual North American

Conference_Location

Auburn, AL

Print_ISBN

0-8186-2115-X

Type

conf

DOI

10.1109/NAPS.1990.151350

Filename

151350