Title: A comparison and simulation study of robust excitation control strategies for single-machine infinite bus power system

Authors: Zhaozhun Zhong, Jingcheng Wang

Addresses: Department of Automation, Shanghai Jiaotong University, Shanghai, 200240, China. ' Department of Automation, Shanghai Jiaotong University, Shanghai, 200240, China

Abstract: In this paper, the robust excitation control strategies for single-machine infinite bus power system are studied and compared. Effort has been concentrated on comparisons between the linear guaranteed cost robust control strategy and the non-linear robust passive control strategy. It is shown through simulations that both the strategies are effective in improving power system transient stability under bounded uncertainties, but the linear strategy experiences a sustained low-frequency oscillation and on the other hand, the non-linear strategy results in a very complex control law and presents a peaking phenomenon.

Keywords: linear guaranteed cost control; nonlinear passive control; single-machine infinite bus power system; stability; robust control; excitation control.

DOI: 10.1504/IJMIC.2009.027888

International Journal of Modelling, Identification and Control, 2009 Vol.7 No.4, pp.351 - 356

Published online: 14 Aug 2009 *

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