| Wind energy, is rich, wind energy is a pollution-free renewable energy. In order to effectively cope with the increasingly severe energy shortages and environmental pollution problems, wind power and other clean, renewable energy, large-scale power grid will become inevitable. However, the wind resources are intermittent, random and volatile, the safe and stable operation of the power grid has brought serious challenges. This paper introduces the present situation of wind power development at home and abroad, and studies the influence of large-scale wind field on the voltage stability after power system. Combined with the actual wind power planning in Ningxia, the wind- The Influence of Voltage Stability of Power System. The topic has important academic value and application significance.In this paper, the influence of wind power grid on the stability of voltage is studied deeply. Firstly, the present situation of wind power development in the world is summarized, the development history and future development direction of wind turbine technology are summarized, the challenge of wind power grid voltage stability is summarized. The work laid the foundation. Then, the analysis methods of voltage stability are introduced, including small interferometric eigenvalue analysis method, long - term voltage stability analysis methods such as PV curve, QV curve and QV modal analysis. Then, the analysis process of the small interference stability is described in detail. In order to analyze the small interference stability of the doubly fed fan, the modeling process of the controller is introduced in detail, and a single machine is set up in DIgSILENT/Power Factory. The system is composed of the eigenvalue and the correlation factor of the system. The system is a small interfering stable system. Finally, the influence of Ningxia power grid on the voltage stability of power system is analyzed. The voltage stability is closely related to the active power and reactive power. By setting up the global model of Ningxia power grid and setting different simulation conditions, the static voltage stability And the dynamic voltage stability of the two aspects of the doubly - fed wind field on the power grid voltage steady - state impact, the results show that the whole system in all types of failures have shown a better voltage stability. |
