Research On Blockchain-based Distributed Energy Dispatch And Transaction Method For Intelligent Building Clusters

With people’s higher requirements for the building environment,the energy demand of buildings also increases.How to improve the utilization rate of building energy has become an urgent problem to be solved in today’s society.The rise of distributed energy has brought new solutions to building energy conservation,but distributed energy generation have the nature of many points and a wide range,and the traditional centralized power dispatching method is no longer applicable.As an emerging distributed infrastructure,blockchain technology is consistent with the application of distributed energy system,and can realize the independent sharing of energy and information in the building complex.From the perspective of blockchain technology application,this paper creatively puts forward the intelligent building cluster distributed energy dispatching and trasaction method,so as to promote the practical application of distributed energy in traditional power grid dispatching.The specific research contents are as follows.1)This paper expounds the relevant theories of intelligent building clusters and the key technologies of energy blockchain,and compares and analyzes two transaction mechanisms of distributed energy in detail,namely P2 P transaction and centralized clearing.From the perspective of the characteristics of blockchain technology and distributed energy system and market transaction,this paper analyzes the fit between them,and theoretically proves the feasibility of the application of blockchain technology in distributed energy system.2)From the perspective of cluster,taking the intelligent building cluster with photovoltaic,wind power and electric vehicles as the research object,combined with block chain technology,a scheduling method of intelligent building group is proposed,and the mathematical modeling of supply and demand mechanism under this scenario is carried out.A co evolutionary algorithm combining hierarchical search and local search is designed.The feasibility of the proposed scheduling method is verified by simulation analysis.3)On the basis of the day ahead scheduling method,the time scale is reduced,and an intra day scheduling method based on block chaining technology is constructed.A two-level optimization strategy is adopted to achieve the economic dispatch target in the two time scales of ahead day and intra day.In the intra day dispatching stage,the deviation of the day ahead scheduling is taken as the optimization variable,and the intra day dispatching intelligent contract is called.The simulation results show that the proposed method can reduce the dispatching prediction error and improve the utilization of clean energy.4)The overall architecture of the autonomous transaction method is proposed and the mathematical model is built in order to minimize the deviation between the actual power consumption in the building cluster and the dispatching plan.In order to ensure that users actively cooperate with the planned tasks,an incentive mechanism based on reputation value is designed.In addition,the designed intra day energy dispatching and monitoring smart contract and multilateral transaction settlement smart contract can automatically calculate the supply and demand of users’ energy and automatically settle transactions.Through simulation analysis,this method can not only improve the economic benefits of the building group,but also improve the reliability of power supply in the building cluster.