Research On Energy Transaction Of Multi-microgrid Shared Energy Storage Based On Blockchain Technology

As more and more microgrids are connected to the same distribution area to form a multimicrogrid system,when multiple microgrids integrating production and consumption conduct energy transactions,the complexity of the trading market will greatly increase.At present,there are many unsafe factors in the energy trading market,and the problem of information security needs to be solved.Since energy storage technology has the advantages of promoting the consumption of renewable energy,and the blockchain technology is compatible with the characteristics of distributed energy due to its technical characteristics,it provides solutions for the problems of energy trading and the construction of a new trading model for distributed energy.Solution ideas and technical support.This paper proposes a multi-microgrid sharing energy storage energy transaction mode based on blockchain technology,and applies it to the optimization of multi-microgrid systems.The economic cost of the operation of the energy storage station,and the use of blockchain technology to solve the security and complexity problems of energy exchanges.This paper first introduces the characteristics of multi-microgrid energy transactions and blockchain technology,and summarizes the current problems of multi-microgrid transactions.Then combined with the current development situation of the power industry,the blockchain technology and energy storage technology are introduced,and the feasibility analysis of the concept of combining them with the power industry is carried out.Then,a multi-microgrid shared energy storage energy transaction architecture based on blockchain technology was established.The operation mode of the architecture is given,which lays the foundation for the following model building work and blockchain technology implementation.Secondly,a multi-microgrid system energy transaction mode is established by using the cooperative game mode,and a multi-microgrid energy transaction structure based on blockchain technology with shared energy storage is established.In order to ensure that microgrid prosumers and shared energy storage participate in energy cooperation,proposed a shared cooperation model based on Nash bargaining,and adopted an individual satisfactory distribution method under the condition of ensuring the maximization of the overall energy efficiency.At the same time,the alternating direction multiplier method(ADMM)is introduced to solve the first-stage problem of the cooperative game with a distributed solution method,and the transaction process based on the blockchain smart contract is designed according to the problem of the second-stage benefit distribution model.Finally,the numerical example verifies that the proposed method can improve the overall economy and effectively reduce carbon emissions,and achieve transparent and open transactions.And according to the benefit distribution model,a multi-microgrid energy trading platform based on blockchain technology is designed and built.