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Design of nonlinear robust excitation control for multimachine power systems

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4 Author(s)
Sun, C. ; Dept. of Electr. Eng., Tsinghua Univ., Beijing, China ; Zhao, Z. ; Sun, Y. ; Lu, Q.

The nonlinear robust control problem of power systems is investigated in the paper. A novel controller for the generator excitation system is set up, based on a combination of H control theory and an exact feedback linearisation approach. The properties of the controller are its complete decentralisation and robustness. The design is well suited to a multimachine system in that it is not based on a infinite bus approximation. Simulation performed on a 13-machine system shows that the proposed controller can not only improve the dynamic performance of the power system but also enhance the system stability, especially the large disturbance stability

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Generation, Transmission and Distribution, IEE Proceedings-  (Volume:143 ,  Issue: 3 )