Self-tuning control scheme for stability enhancement of multimachine power systems

Author

Lim, C.M. ; Hiyama, T.

Author_Institution

Dept. of Electron. Eng., Ngee Ann Polytech., Singapore

Volume

137

Issue

4

fYear

1990

fDate

7/1/1990 12:00:00 AM

Firstpage

269

Lastpage

275

Abstract

A decentralised self-tuning control scheme for the stability enhancement of multimachine power systems is presented. The dynamic performance of each machine in the study multimachine system is described by a discrete-time model for the purpose of stabiliser design. Each stabiliser is designed using this discrete-time model and a performance index which enhances the damping characteristic of the overall multimachine system is defined. Nonlinear simulation tests show that the proposed self-tuning control scheme is suitable for the stability enhancement of two multimachine power systems, both for small and large disturbances and for different operating conditions. It is also demonstrated that the proposed self-tuning stabiliser can effectively co-operate with the conventional fixed parameter stabiliser, to improve the system stability

Keywords

adaptive control; decentralised control; power system control; self-adjusting systems; stability; damping characteristic; decentralised self-tuning control scheme; discrete-time model; disturbances; dynamic performance; multimachine power systems; nonlinear simulation tests; performance index; stability enhancement;

fLanguage

English

Journal_Title

Generation, Transmission and Distribution, IEE Proceedings C

Publisher

iet

ISSN

0143-7046

Type

jour

Filename

103260