Abstract：In order to study the mechanism of the voltage instability of the power system including doubly fed induction generator wind turbine (DFIG WT), the simplified model of a three-node power system with doubly fed induction generator wind turbine was developed, and the equilibrium manifold was tracked using the locally parameterized continuation method. Based on the bifurcation theory and the simulation, the processes of going from stability to voltage instability and voltage collapse were analyzed. From the nonlinear dynamics point of view, the nature of the voltage instability and the solution structure variation caused by varying the system parameters were illustrated. The critical points of the bifurcation and voltage collapse at different wind speeds were identified and the impact of the wind speed on the voltage collapse point was presented. The results show that Hopf, homoclinic, static and saddle-node bifurcations have been observed and they essentially induce the voltage instability even the voltage collapse of the studied system. Moreover, the wind speed can have influence on the voltage stability margin of the system.
杨黎晖, 马西奎. 基于分岔理论的含双馈风电机组的电力系统电压稳定性分析[J]. 电工技术学报, 2012, 27(9): 1-8.
Yang Lihui, Ma Xikui. Analysis on Voltage Stability of Power System with Doubly Fed Induction Generator Wind Turbine Based on Bifurcation Theory. Transactions of China Electrotechnical Society, 2012, 27(9): 1-8.
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