Power system stability enhancement using PSS and UPFC Lyapunov-based controllers: a comparative study

Author

Robak, S. ; Januszewski, M. ; Rasolomampionona, D.D.

Author_Institution

Inst. of Power Eng., Warsaw Univ. of Technol., Poland

Volume

3

fYear

2003

fDate

23-26 June 2003

Abstract

Recently it has been shown that it is possible to design a power system stabilizer (PSS) as well as an unified power flow controller (UPFC) controller using a non-linear multi-machine system model in conjunction with Lyapunov´s direct method. In this paper the features of two controllers implementing the proposed control laws have been compared: the PSS constitutes a supplementary loop to the main automatic voltage regulator (AVR) and UPFC controller. Theoretical analysis is supported by the results of eigenvalues analysis and simulations tests, which highlighted the differences between the actions of compared controllers. The tests performed on a multi-machine system model have shown a good performance of both proposed controllers.

Keywords

Lyapunov methods; eigenvalues and eigenfunctions; load flow control; nonlinear control systems; power system stability; voltage regulators; Lyapunov direct method; automatic voltage regulator; eigenvalues analysis; flexible AC transmission systems; nonlinear multimachine system; power system stability; synchronous generator excitation; unified power flow controller; Analytical models; Automatic control; Automatic voltage control; Control systems; Eigenvalues and eigenfunctions; Load flow; Nonlinear control systems; Power system modeling; Power system stability; Regulators;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Tech Conference Proceedings, 2003 IEEE Bologna

Print_ISBN

0-7803-7967-5

Type

conf

DOI

10.1109/PTC.2003.1304440

Filename

1304440