| Distributed energy storage is an important supporting technology in the new power system.Compared with centralized energy storage,it can promote clean energy consumption,improve power supply reliability and power quality,participate in the power auxiliary service market,and improve user energy consumption curves.In addition to the general characteristics of energy storage,it also has special advantages such as more flexible construction site selection,reduced line loss,and easier realization of local consumption of distributed power.At the same time,the commercial operation model of distributed energy storage is still in the exploratory stage,which brings problems such as low utilization rate of the equipment,slow recovery of user investment,and unreasonable pricing of shared services.To this end,this paper conducts research on the distributed energy storage sharing transaction model and service pricing mechanism.The main work includes the following three parts.(1)To reduce the threshold for distributed energy storage to participate in market transactions,use blockchain technology,and avoid the 50%trust crisis in the consensus mechanism,a DPoS consensus mechanism is established for largescale distributed energy storage to participate in shared service consortium blockchain support platform.Based on fully investigating the technical characteristics and working principles of various types of blockchain consensus algorithms suitable for distributed energy storage characteristics,the node participation type,data openness,transaction carrying capacity,and typical application scenarios of the blockchain application model are analyzed.Inductively compared,it is proposed to use the authorized proof-of-stake consensus mechanism to build a shared alliance chain support platform.Finally,by setting the established trust unit as the authorized node to keep accounts in turn,a series of functional tests are carried out on the shared consortium blockchain in the virtual machine environment,which reflects the usability and higher reliability of the shared consortium blockchain.(2)Aiming at the low efficiency of existing distributed energy storage sharing transactions,poor security and privacy,no consideration of transaction optimization matching,pricing mechanism,and price accounting methods are not standardized and unreasonable,a distribution with price accounting is proposed.Energy storage online sharing optimizes matching transaction mode.Firstly,the operation mechanism and interaction mechanism of smart contracts are introduced,and a distributed energy storage smart contract model is established according to the characteristics of energy storage itself and security and privacy requirements;to further improve transaction efficiency and standardize transaction price accounting standards,a smart The smart contract model of administrators with other functions;through the operation interaction of smart contracts,the multifunctional transaction mode of distributed energy storage online sharing is realized;finally,the simulation example shows the whole process of distributed energy storage online sharing.Through the comparison of transaction modes,It verifies the feasibility,efficiency,and rationality of standardizing market transaction pricing under a large user scale.(3)Aiming at the problem of rational pricing of distributed energy storage sharing services,fully considering the non-linear impact of equipment transfer power and user manipulation behavior on equipment capacity life loss in the process of distributed energy storage sharing services,a distribution based on full life cycle cost is proposed.Pricing method for energy storage sharing transaction service.Firstly,analyze and summarize the distributed energy storage sharing business model,clarify the transaction usage scenarios and user groups;then,based on the distributed energy storage life-cycle cost model,establish two pricing mechanisms based on throughput and remote control behavior respectively,and The corresponding price accounting model is given;finally,the final service fee of each pricing accounting model in different scenarios is compared and analyzed through calculation examples,and the superiority of the proposed pricing mechanism and the corresponding price accounting model are verified,and from the perspectives of operators and lessees,the applicable scenarios and selection suggestions of different pricing accounting mechanisms are given to further stimulate the enthusiasm of users to participate,which has certain application value. |
PDF Full Text Request