Please use this identifier to cite or link to this item:
Title: Robust decentralized nonlinear controller design for multimachine power systems
Authors: Wang, Y.
Guo, G. 
Hill, D.J.
Keywords: Decentralized control
Nonlinear systems
Power system control
Robust control
Issue Date: Sep-1997
Citation: Wang, Y., Guo, G., Hill, D.J. (1997-09). Robust decentralized nonlinear controller design for multimachine power systems. Automatica 33 (9) : 1725-1733. ScholarBank@NUS Repository.
Abstract: In this paper, a robust decentralized excitation control scheme is proposed for multimachine power system transient stability enhancement. First, a direct feedback linearization (DFL) compensator through the excitation loop is designed to eliminate the nonlinearities and interconnections of the multimachine power system. Then, a robust decentralized controller is proposed to guarantee the asymptotic stability of the DFL compensated system considering the effects of plant parametric uncertainties and remaining nonlinear interconnections. The design procedure for an n-machine power system involves in solving n Riccati equations. In the design of the robust nonlinear decentralized controller, only the bounds of generator parameters need to be known, but not the transmission network parameters, system operating points or the fault locations. Since the proposed robust nonlinear decentralized controller can guarantee the stability of the large scale power system within the whole operating region for all admissible parameters, transient stability of the overall system can be greatly enhanced. The design procedure is tested on a three-machine example power system. Simulation results show that the proposed control scheme can greatly enhance the transient stability of the system regardless of the network parameters, operating points and fault locations. © 1997 Elsevier Science Ltd.
Source Title: Automatica
ISSN: 00051098
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

checked on Apr 11, 2021

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.