Optimization Model For Spinning Reserve Capacity Considering The Wind Speed Correlation Of Complex Terrain Wind Farm

In order to promote the development and utilization of clean energy wind power,the penetration rate of wind power increases year by year.With wind power connected to the power system widely,the wind turbines have the ability to participate in the power system frequency modulation.The more reserve capacity can enhance the stability of the power system.The volatility and uncertainty of wind power raise new challenges.The more spinning reserve capacity left,the more stable the system was.While the more spinning reserve capacity left by the wind turbine,the higher the amount of abandoned wind.Therefore,this paper is devoted to finding the balance point of the two to optimize the reserve capacity.In this paper,the wind farm can provide the power system frequency modulation standby capacity support as the background of the wind power system,using the fan to work in the load shedding mode,combined with changing the inertia kinetic energy generated by the rotating speed to increase the reserves reserve.The main contents of this paper are as follows:Firstly,the WAsP is used to construct the wind farm model,and the wind speed forecast data are obtained by considering the wake effect,surface roughness and obstacle obstruction.Wind speed prediction model of wind farm under complicated terrain environment was established.The wind speed data were obtained by using WAsP software.The wind turbine shape parameters and scale parameters were obtained by using historical data,which was used as the data base of wind turbine equivalent aggregation.Then Copula theory is used to analyze the wind speed of the wind farm in complex terrain,and the wind farm is equivalently aggregated according to the correlation.The mixed-Copula function is constructed to describe the combined distribution of wind speeds of two wind turbines,and the equivalent clustering of wind turbines is carried out by the rank correlation coefficient test.Finally,two wind turbines are simulated to validate the fitting wind speed of complex geomorphic features.Data and take into account the characteristics of wind speed correlation.Finally,based on the wind speed forecast data and the wind turbine wind turbine equivalent aggregation results,wind speed-wind power model is established,and on this basis,the rotation reserve capacity of wind farm is optimized.The optimization model of standby mode and the optimization model of load shedding mode were established respectively.Both of the optimization models considered the influence of wind speed correlation.The reserve air volume is optimized by the standby mode,and the reserve capacity is optimized by the unloading mode.Simulation results show that the rotation reserve capacity optimization considering the wind speed dependency can provide more reserve than the traditional method,and effectively reduce the abandoned wind.