Load Shift Optimization Strategy Of Battery Energy Storage System In Power Grid

With the adjustment of industrial structure,the power grid is facing the problem of increasing gap between peak and valley,increasing abrupt increase in intermittent new energy sources,and low investment and expansion of distribution network.In recent years,the electroch emical energy storage technology has developed rapidly,and the maturity,coupled with technical economy of the battery energy storage technology have been improved continuously.application conditions for the peak load shifting of the power grid are available.This topic focuses on the battery energy storage issues related to the optimization of peak load shifting.On the basis of establishing and solving the single target power optimization model of peak load shifting of battery energy storage,this paper further constructs the optimization problem of multi-target peak load shifting of economy and wind power consumption,and carries out the corresponding optimization solution.First,the battery energy storage system is involved in the optimization model of power grid peak load shifting,including the objective function of the peak cutting effect as the target.The physical constraints when the battery energy storage system is involved in the peak load shifting and the battery energy storage system,which is involved in the evaluation of shifting price of the power grid.Based on the optimization model of peak load shifting,the battery energy storage system is optimized.First,based on the analysis of the quadratic programming model,it is proved that the battery storage system based on the quadratic plan is involved in the convexity of the peak load shifting optimization model.Then the genetic algorithm is applied to optimize the battery energy storage system in the peak load shifting optimization model.Based on the two-step programming algorithm and genetic algorithm,a simple and simple constant power method and the generalized method are proposed to solve the model.On the basis of analyzing the direct economic benefits of the battery energy storage in the power grid peak load shifting,the multi-objective optimization model of the direct economy and the effect of peak load shifting of the battery energy storage system to take part in the peak load shifting is constructed.The characteristics of the model are analyzed,and the outer layer genetic algorithm is used to optimize the charge discharge state of the battery energy storage system.The model is solved by the double optimization of the charge discharge power of the battery energy storage system based on the quadratic programming.Through the simulation analysis,it is proved that the direct economy of the battery energy storage and the effect of peak load shifting in the power grid are in a certain degree,that is,a good direct economy can be tak en into account under the good effect of peak load shifting.In the end,a multiple battery energy storage system with wind power accommodation is built to participate in the multi-target optimization model of shifting,including the multi-objective optimization function and its constraint conditions,which consider the minimum abandoned air volume and the effect of shifting.The model is analyzed and optimized.Through the example simulation analysis,the paper proposed that the multiple battery energy storage system of wind power consumption,which is involved in the optimization of peak load shifting,can achieve good shifting performance and grain filling effect and improve the utilization rate of renewable energy.