Research And Application Of Blockchain-enabled Smart Grid Demand Response Transaction Mechanism

With the amount of electricity traded at trillions of levels,the number of power trad ing entities has increased sharply,and bilateral direct transactions have developed rapidl y.Smart grids are facing problems such as power imbalances,grid instability,low transa ction efficiency,and lack of security and fairness.Therefore,how to effectively store an d manage grid transactions,improve transaction security and fairness,and improve grid stability have become a series of important issues in the development of smart grids.Thi s thesis combines blockchain technology with demand response to solve the above probl ems in a systematic way.The main research contents and results are as follows:First,a new demand response algorithm model for user-side energy storage based o n Stackelberg game is proposed.This model advocates users to use solar power to gener ate electricity,encourages users to participate in electricity sales to reduce grid power ge neration,realizes the demand response game of user-side energy storage,and solves the problems of power imbalance and grid instability in the grid.This thesis uses the reverse induction method to analyze the model,and finds that the model has a unique power bal ance point and power price balance point,and can optimize the benefits of game users.T hen this thesis describes the game experiment process,and compares and analyzes the d emand response model of user-side energy storage with the existing price demand respo nse model and incentive demand response model.Better performance in electricity bills and so on.Secondly,use the application characteristics of the blockchain to design a transacti on framework and write a new fair power transaction smart contract model.In the smart contract model,a two-layer identity verification mechanism,an energy transaction mech anism,a digital RMB-based transaction authentication mechanism,and a policy verifica tion mechanism are added.Through blockchain empowerment and transaction mechanis m settings,transaction information can be automatically processed,stored,verified and t ransmitted,which improves transaction efficiency and enhances transaction security and fairness.After analyzing the performance and results of the model,this thesis finds that the model performs well in the execution of transaction functions,and the resource usag e of the system is mainly focused on the uplink operation of calling the chaincode.By c omparing the throughput and solutions with other blockchain projects,we can see that th is model has obvious advantages in terms of throughput and functional solutions.Finally,combined with the demand response algorithm model and the fair power tr ansaction smart contract,a blockchain-enabled demand response transaction system for smart grids is designed and implemented.The architecture design of the system includes application architecture,development architecture,blockchain network architecture,an d data model architecture,and on this basis,functional modules such as user manageme nt,policy management,and transaction contract management are designed and impleme nted.In order to verify the performance and security of the system,this thesis conducts a functional test,a performance test and a security test of malicious nodes tampering with the ledger.The test found that all indicators are normal.