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

摘要

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 nonlinear 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 nonlinear strategy results in a very complex control law and exists a peaking phenomenon.