Optimal Decision-making Of Prosumer Cluster Transaction With Coupling Operation Of Power Chain And Transaction Chain And Its Implementation On Blockchain

On the power demand side,there are a large number and variety of terminal users,including industrial,commercial,and residential users with different voltage levels and scales.With the rapid development of distributed wind power and photovoltaic power generation,traditional power consumers have been transformed into power prosumers with dual characteristics of power production and consumption.At present,prosumers can participate in the demand side power market.This paper considers the problem of power consumption of prosumers with power generation equipment on the demand side and the distribution of power resources caused by orderly electricity consumption,and develops a blockchain-based peer-topeer transaction mechanism.Firstly,from the background of the deepening reform of China’s distribution side market,it discusses the transaction prospects of prosumers and prosumer cluster participating in the power market.The advantages of blockchain technology applied to the distribution side power market are analyzed in detail,the feasibility analysis of the distribution side transaction mode is given.Then,a double blockchain architecture was proposed to support the peer-to-peer transactions of prosumers,and the transaction information and physical verification information of prosumers were deployed in separate chains in the transaction chain and check chain,which reduced the burden of transaction data in the blockchain system.A transaction decision optimization model and a security check adjustment model are built to support peer-to-peer transactions between prosumers.Compared with the single blockchain,the double blockchain not only improved the efficiency of peer-to-peer transactions,but also ensured the security of information interaction,and effectively promoted the local consumption of wind and solar resources in the peer-to-peer trading market.In addition,in order to improve the user’s autonomy in electricity consumption under the situation of orderly electricity consumption,a smart contract-based source-load aggregator’s power consumption rights transaction method is proposed,which takes the prosumer cluster as the main body and includes three stages of initial allocation,transaction and settlement of power consumption rights,so as to realize the rational distribution of electricity and ensure the user’s autonomy in electricity consumption.on this basis,a decision-making model based on Nash bargaining for the optimization of power consumption rights transactions between prosumer cluster is constructed to ensure the optimality of power distribution and the smart contract and the consensus process of the power consumption rights transaction of the prosumer cluster ensure the fairness of trading market.In summary,the double-chain architecture that takes into account the economic attributes and physical characteristics of prosumers effectively supported distributed peer-to-peer transactions between prosumers and promoted the local consumption of distributed electric energy.At the same time,based on smart contract’s power consumption rights trading mechanism of prosumer cluster and the power trading decision-making optimization model provided theoretical guidance for the efficient and optimal allocation of demand-side power resources.