结构保留电力系统多变量频域反馈模型

A Structure Preserving Multi-variable Feedback Model of a Power System in the Frequency Domain

本文建立了一个新颖的结构保留电力系统反馈模型,并以多变量奈魁斯特(Nyquist)判据分析了实际的电力系统小干扰稳定性问题,验证了该模型的优越性。

A new model is proposed for the study of small disturbance stability where the block diagram (transfer function) of a power system is in feedback system form and the structure of the system is preserved. Since the new model keeps the sparsity of the system, it can save the CPU time a great deal. A numerical example, in which the small distu- rbance stability of a power system is investigated using the multi-variable Nyquist criteria, is included to show the advantages of the proposed model.