Analysis of voltage stability enhancement by robust nonlinear STATCOM control

Author

Chen, H. ; Zhou, R. ; Wang, Y.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore

Volume

3

fYear

2000

fDate

2000

Firstpage

1924

Abstract

This paper discusses robust nonlinear control of static compensator (STATCOM) to improve power system voltage stability. Direct feedback linearization (DFL) technique is employed to transform the nonlinear STATCOM model into a linear one. A robust approach is used to eliminate the effect of parametric uncertainties. Simulation results show that the proposed controller achieves good voltage regulation in the presence of parameter uncertainties. The impact of the controller on voltage stability is studied on a three-machine system. It is shown that the feasibility region has been enlarged

Keywords

feedback; linearisation techniques; power system control; power system dynamic stability; robust control; static VAr compensators; voltage control; direct feedback linearization; feasibility region; linear STATCOM model; nonlinear STATCOM model; parametric uncertainties effect elimination; power system voltage stability; robust nonlinear STATCOM control; three-machine system; voltage regulation; voltage stability; voltage stability enhancement; Automatic voltage control; Control systems; Nonlinear control systems; Power system modeling; Power system simulation; Power system stability; Robust control; Robust stability; Stability analysis; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society Summer Meeting, 2000. IEEE

Conference_Location

Seattle, WA

Print_ISBN

0-7803-6420-1

Type

conf

DOI

10.1109/PESS.2000.868828

Filename

868828