Stabilization of inter-area modes by controllable phase shifter

Author

So, P.L. ; MacDonald, D.C.

Author_Institution

Dept. of Electr. & Electron. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK

Volume

1

fYear

1996

fDate

24-27 Sep 1996

Firstpage

419

Abstract

This paper presents an application of a fast, fully controllable phase shifter (CPS) for stabilizing unstable or poorly damped inter-area oscillatory modes in an interconnected system. The study is based on eigenvalue analysis of a linearized interconnected system model. Inter-area modes are first identified for an oscillation incident and then stabilization of these modes using a CPS is obtained. The best location for installing a CPS is determined by analyzing the mode controllability. A decentralized control scheme using tie line power deviation as the feedback signal for the CPS control system is shown to be effective in damping inter-area modes of oscillation. Computer simulation of an interconnected study system is used to validate the proposed CPS controller

Keywords

controllability; damping; decentralised control; feedback; oscillations; phase shifters; power system control; power system interconnection; power system stability; state-space methods; computer simulation; controllable phase shifter; decentralized control; feedback signal; inter-area modes identification; inter-area modes stabilisation; interconnected system; linearised state space model; linearized interconnected system model; mode controllability; poorly damped inter-area oscillatory modes; tie line power deviation; Computer simulation; Control systems; Controllability; Damping; Distributed control; Eigenvalues and eigenfunctions; Feedback; Interconnected systems; Phase shifters; Power system modeling;

fLanguage

English

Publisher

ieee

Conference_Titel

AFRICON, 1996., IEEE AFRICON 4th

Conference_Location

Stellenbosch

Print_ISBN

0-7803-3019-6

Type

conf

DOI

10.1109/AFRCON.1996.563149

Filename

563149