Design of decentralized power system stabilizer for multi-machine power system using periodic output feedback technique

Author

GUPTA, Rajieev ; Bandyopadhyay, B. ; Kulkarni, A.M. ; Manjunath, T.C.

Author_Institution

Syst. & Control Eng., Indian Inst. of Technol., Mumbai, India

Volume

3

fYear

2002

fDate

2-5 Dec. 2002

Firstpage

1676

Abstract

Power System Stabilizer (PSS) are added to excitation system to enhance the damping of electric power system during low frequency oscillations. Design of decentralized PSS for 4 machines with 10 buses using periodic output feedback is proposed. The nonlinear model of multi-machine system is linearized and linear state space model is obtained. An output injection gain is obtained using LQR technique. A decentralized periodic output feedback gain which realizes this output injection gain is obtained using LMI approach. This method doesn´t require state of the system for feedback. It uses only the output for feedback. Thus it is easily implementable.

Keywords

controllers; damping; feedback; linear matrix inequalities; linear quadratic control; multivariable systems; nonlinear systems; periodic control; power system stability; LMI approach; LQR technique; damping; decentralised power system stabilizer; electric power system; linear state space model; low frequency oscillations; multimachine system; nonlinear model; output feedback gain; output injection gain; Control systems; Frequency; Optimal control; Output feedback; Power generation; Power system modeling; Power system stability; Power systems; State feedback; State-space methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Control, Automation, Robotics and Vision, 2002. ICARCV 2002. 7th International Conference on

Print_ISBN

981-04-8364-3

Type

conf

DOI

10.1109/ICARCV.2002.1235027

Filename

1235027