The Development of Generator Modeling Techniques for Multimode Oscillations and Study of Generator H ∞ Control Design Method for Robust Control

The modern electric power system of our country is high density, large-scale and complication. The multimode oscillations occurs in the generator connected with this system. It is being mixed to high-and low-frequency oscillations between the power systems and many other oscillations, such as the SSR and cross-compound machine oscillations, which is specific mode oscillations of generator. In this paper, first the generator actual model that realizes the multimode oscillations is constructed. Next, model reduction of this actual model is done, and design model to use for the control design is composed. Then, the H∞ control design in modern control theory is presented by using this design model which derives damping of power system oscillations and robust stabilization of other multimodes. Finally, a goal for control design is verified by simulation on the actual model with H∞ controller