Research On The Impact Of Large-scale Wind Power Integration On The Security And Stability Of Power System

The development of social economy and the improvement of people's living standard depend on energy consumption,and the reserves of oil,coal and other major fossil fuels are decreasing.To achieve sustainable development,various countries in the world study and develop a variety of renewable energy sources.As a rich and mature technology,wind energy has become the mainstream of new energy development and utilization.Wind power has the characteristics of volatility,stochastic,intermittent,large-scale wind power grid security and stability of power system,the dispatching operation caused great influence,the influence law of exploration and research is very urgent.Based on the model of wind turbines,wind speed model and the establishment of mathematical model and simulation analysis,in regional grid as an example on a large scale wind power grid after research on the influence of the power system security and stability.Firstly,this paper has carried on the wind turbines principle and model analysis,on the basis of the research on wind speed model is introduced,the types of the current commonly used wind turbines are including fixed pitch generator and variable pitch generator.A fan system model is built for the turbine wind turbine with variable pitch and double feed generator,which is the theoretical basis for the analysis of system operation characteristics.Then the paper introduces the safety and stability calculation method of power system after wind power connection.The method of safe and stable calculation in wind power environment is analyzed.Lastly,the analysis of the safety and stability of the wind power grid in regional grid is carried out,it analyzes the power flow,work Angle,voltage and other operating characteristics of power grid from two aspects of the delivery system and the terminal system after fully understanding the connection of wind power.The general characteristics of power system running after wind power grid are obtained which is of guiding significance for future wind power grid work.