Study On Economic Optimized Operation Control Of Compressed Air Energy-wind Energy Storage

In recent years,the utilization of wind energy resources in China has developed rapidly.However,due to the intermittence and fluctuation of wind power,the grid con-nection of wind power will cause negative impacts on power quality,system stability,peak load regulation and frequency modulation,system scheduling,etc.,which limits its development and results in a large extent of wind power abandonment.Therefore,the combination of wind power and energy storage can alleviate the problem of wind abandonment to some extent.In this paper,the wind energy and compressed air energy storage are discussed respectively to find the method to improve the operation condition.Firstly,for the wind farm,in order to improve the output work of the wind farm,the wake effect model and the fan power model are built on the basis of considering the wind speed correlation between the wind turbines.Therefore,under the given constraint conditions,the opti-mization algorithm can be used to obtain the output of each fan,and then the maximum output power of the wind farm can be obtained.When the wind farm achieves the max-imum output work under the given wind speed conditions,the corresponding fan posi-tion is the optimal layout of the wind farm.Secondly,on the basis of analyzing the principle of compressed air energy storage,the model of main components is constructed to analyze the working process of com-pressed air energy storage and explore the factors affecting its efficiency.According to the expansion work,thermodynamic analysis is performed to explore the optimization analysis of the expansion cycle.With the help of the maximum efficiency tracking con-trol strategy of the expansion power generation system,the working conditions of the compressed air energy storage system can be improved.Finally,in order to judge the economy of wind-compressed air energy storage,a variety of battery energy storage schemes are introduced by ahp as a comparison.Ac-cording to the application scenario of peak cutting and valley filling,a capacity config-uration method is proposed.In this way,under the condition of ensuring that the same peak-cut power can be supplied,economic analysis of different energy storage schemes is performed.The results show that compressed air energy storage can achieve ideal economic benefits.