Research On Planning And Sizing Of Shared Energy Storage In Renewable Energy Bases

At present,the world is facing the challenge of fossil energy depletion and serious environmental problems caused by traditional energy.In order to address this issue,China has proposed the "dual carbon" goal,and the power system needs to transition to clean and low-carbon.Therefore,renewable energy generation represented by wind and light has achieved large-scale and rapid development.And large-scale renewable energy generation will pose serious challenges to the safety and stability of the power system.In order to improve the stability of renewable energy grid connected power,configuring a certain capacity of energy storage in renewable energy stations is an effective solution.However,due to the current high cost and lifespan of energy storage configuration,it is not possible to allocate a large amount of energy storage for renewable energy stations to fully meet their usage needs.Drawing inspiration from the business model of the sharing economy,this article proposes a shared energy storage operation model for renewable energy stations,fully utilizing the spatiotemporal complementary characteristics of multiple renewable energy station outputs to achieve shared energy storage operation.Improving the utilization rate of energy storage resources through resource exchange,reducing the operating costs of various renewable energy stations,and increasing their profits.Research on a shared energy storage operation framework for renewable energy bases.Analyze the characteristics of a single renewable energy output and the problems caused by the prediction error of renewable energy output power for system scheduling,further analyze the correlation and complementarity of multiple renewable energy station outputs,obtain the output characteristics of multiple renewable energy stations,and analyze the economic and operational characteristics of the entire life cycle of the energy storage system.Finally,construct a basic framework for decentralized shared energy storage based on complementary renewable energy station outputs.Research on an optimized operation method for shared energy storage that takes into account the complementary output of multiple renewable energy stations.a coordinated control mechanism between renewable energy stations and shared energy storage is proposed,and the supply and demand of shared energy storage under different working conditions are analyzed.Establish a shared energy storage charging and discharging model that considers the impact of energy storage state of charge,breaking the barriers to the use of energy storage between renewable energy stations.Finally,with the goal of minimizing daily operating costs,a shared energy storage optimization operation model considering the complementary output of multiple renewable energy sources is established.The calculation results show that implementing a shared energy storage operation model in a renewable energy base can effectively reduce the operating costs of renewable energy stations,improve the absorption capacity of renewable energy,and improve the utilization rate of energy storage resources.Study the optimization configuration of shared energy storage in renewable energy bases.To improve the utilization rate of energy storage resources and reduce the energy storage planning cost of each renewable energy station,based on the coordination and control mechanism of renewable energy station shared energy storage,the energy storage planning capacity of each renewable energy station is optimized.This article proposes a supply and demand matching mechanism based on error rate prediction error and shared energy storage to solve the problem of profit allocation between renewable energy stations,and analyzes the various costs and income of renewable energy stations.Finally,a renewable energy base shared energy storage optimization configuration model is established with the goal of maximizing the overall revenue of renewable energy stations considering multiple typical scenarios,and numerical simulations are conducted.The results indicate that the model proposed in this article can effectively reduce the cost compared to the individual operation mode of each renewable energy station...