Brief Adaptive nonlinear excitation control with L2 disturbance attenuation for power systems

Authors:
Tielong Shen;Shengwei Mei;Qiang Lu;Wei Hu;Katsutoshi Tamura
Affiliations:
Department of Mechanical Engineering, Sophia University, Kioicho 7-1, Chiyoda-ku, Tokyo 102-8554, Japan;Department of Electrical Engineering, Tsinghua University, Beijing 10084, China;Department of Electrical Engineering, Tsinghua University, Beijing 10084, China;Department of Electrical Engineering, Tsinghua University, Beijing 10084, China;Department of Mechanical Engineering, Sophia University, Kioicho 7-1, Chiyoda-ku, Tokyo 102-8554, Japan
Venue:
Automatica (Journal of IFAC)
Year:
2003

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Abstract

This paper presents a design approach to nonlinear feedback excitation control of power systems with unknown disturbance and unknown parameters. It is shown that the stabilizing control law with desired L"2 gain from the disturbance to a penalty signal can be designed by a recursive way without linearization. A state feedback law is presented for the case of the system with known parameters, and then the control law is extended to adaptive controller for the case when the parameters of the electrical dynamics of the power system are unknown. Simulation results demonstrate that the proposed controllers guarantee transient stability of the system regardless of the system parameters and faults.