Table of Contents
Chinese Journal of Engineering
Volume 2014, Article ID 131680, 6 pages
Research Article

Transient Stability Improvement of a Power System with Parametric Uncertainties Using a Robust Optimal H2 State Feedback Controller

1Department of Engineering, Shahrekord University, P.O. Box 115, Shahrekord 8818634141, Iran
2Department of Electrical Engineering, Khomeinishahr Branch, Islamic Azad University, P.O. Box 84175-119, Isfahan 8418148499, Iran

Received 13 September 2013; Accepted 15 January 2014; Published 11 March 2014

Academic Editors: J. Deng and I. Ortiz

Copyright © 2014 Mehdi Mohseni Mirabadi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In recent years, improvement of dynamic behavior of power systems has interested many researchers and to achieve it, various control methods are proposed. In this paper, in order to improve transient stability of power system, a robust optimal H2 state feedback is employed. In order to appropriate formulation of the problem, linear matrix inequality (LMI) theory is used. To achieve the best answer, controller parameters are tuned using particle swarm algorithm. The obtained results of the proposed method are compared to conventional power system stabilizer.