非線形連成振動モデルを用いた多機くし形系統における Hopf 分岐特性の解析

概要

論文の詳細を見る
Power system is a large dynamic system, which includes a lot of nonlinear elements. According to the nonlinear analyses using Hopf bifurcation theory, it can be detected that a limit cycle exists around an operating point, which may affect the global stability of power system significantly. The authors have proposed a numerical method to analyze the nonlinear characteristics in power systems by observing the power swing after some perturbation where the coefficients of nonlinear terms are determined by the least squares method. In this paper the method is modified for the application to a longitudinally interconnected power system including an excitation system to consider the inuence of the modal interaction on the nonlinear phenomena. In this method the system is approximated by a nonlinear coupled vibration model. Then the bifurcation characteristics are evaluated numerically based on the approximate model. The method has been applied to the low-frequency oscillation in IEEJ WEST10-machine system.
社団法人電気学会の論文
2003-12-01