Coordinated decentralized control of AC/DC power systems

Author

Li, H. ; Wang, Y.

Author_Institution

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

Volume

1

fYear

2005

fDate

26-29 June 2005

Firstpage

491

Abstract

A coordinated decentralized controller for hybrid AC/DC system is proposed to attain fast stabilization against transient oscillations. A direct feedback law (DFL) for the generator excitation is found to linearize and decouple the hybrid system. Robust nonlinear control theory and linear matrix inequality (LMI) techniques are employed to design the guaranteed performance excitation controller. DC power modulation control is applied to enhance AC system stability. The proposed coordinated controller is decentralized and based on local measurements. Simulation tests and results show that the proposed controller is effective in enhancing power system transient stability despite operating conditions, fault locations and network parameters.

Keywords

AC generators; DC generators; control system synthesis; controllers; decentralised control; feedback; hybrid power systems; linear matrix inequalities; linearisation techniques; nonlinear control systems; power system control; power system transient stability; robust control; AC system stability; DC power modulation control; coordinated decentralized control; direct feedback law; excitation controller; generator excitation; hybrid AC/DC system; linear matrix inequality; power system transient stability; robust nonlinear control theory; system decoupling; system linearization; transient oscillation; Control systems; Control theory; Distributed control; Feedback; Hybrid power systems; Power system control; Power system stability; Power system transients; Power systems; Robust control;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Automation, 2005. ICCA '05. International Conference on

Print_ISBN

0-7803-9137-3

Type

conf

DOI

10.1109/ICCA.2005.1528169

Filename

1528169