TY - JOUR
T1 - Robust decentralized control for multimachine power systems
AU - Wang, Youyi
AU - Hill, David J.
AU - Guo, Guoxiao
N1 - Funding Information:
Manuscript received November 27, 1995; revised January 20, 1997. This work was supported by Nanyang Technological University Research Fund. This paper was recommended by Associate Editor Uwe Helmke. Y. Wang is with the School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Republic of Singapore (e-mail: [email protected]). D. J. Hill is with the University of Sydney, Sydney, Australia. G. Guo is with Data Storage Institute of Singapore, Singapore, Republic of Singapore. Publisher Item Identifier S 1057-7122(98)00236-0.
PY - 1998
Y1 - 1998
N2 - In this paper, a new robust linear decentralized controller is proposed to enhance the transient stability of nonlinear niultiniachine power systems. Only local measurements are required in the proposed controller. The feedback gain of each generator is obtained by solving an algebraic Riccati equation based on the bounds of the machine parameters. The stability analysis shows that the decentralized controller can guarantee the system stability over the whole operating region and regardless of fault locations or parameter uncertainties of the transmission network. Compared with nonlinear controllers, linear controllers are of simpler structure and easier to be implemented. A threemachine power system is considered as an application example. Simulation results show that despite the interconnections between different generators, nonlinearities in the system, different operating points, and different fault locations, the proposed robust decentralized controller can greatly enhance power system transient stability.
AB - In this paper, a new robust linear decentralized controller is proposed to enhance the transient stability of nonlinear niultiniachine power systems. Only local measurements are required in the proposed controller. The feedback gain of each generator is obtained by solving an algebraic Riccati equation based on the bounds of the machine parameters. The stability analysis shows that the decentralized controller can guarantee the system stability over the whole operating region and regardless of fault locations or parameter uncertainties of the transmission network. Compared with nonlinear controllers, linear controllers are of simpler structure and easier to be implemented. A threemachine power system is considered as an application example. Simulation results show that despite the interconnections between different generators, nonlinearities in the system, different operating points, and different fault locations, the proposed robust decentralized controller can greatly enhance power system transient stability.
KW - Feedback linearization
KW - Nonlinear systems
KW - Power system control
KW - Robust control
KW - Stability enhancement
UR - http://www.scopus.com/inward/record.url?scp=0032028914&partnerID=8YFLogxK
U2 - 10.1109/81.662700
DO - 10.1109/81.662700
M3 - Article
AN - SCOPUS:0032028914
SN - 1057-7122
VL - 45
SP - 271
EP - 279
JO - IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications
JF - IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications
IS - 3
ER -