Research On Transaction Mode Of Sharing Distributed Energy Storage Based On Blockchain

As a key equipment in the Energy Internet,distributed energy storage can not only participate in the regulation of power system operation,but also enhance the economic benefits of energy storage by means of market-oriented mechanisms such as difference between peak and valley price and auxiliary service compensation.In recent years,with the improvement of the reliability of distribution network in some areas,the probability of energy storage providing emergency standby is very low,and the power consumption behavior of different energy storage entities has certain time difference and complementarity.The problems of idleness and low utilization of investment of energy storage assets are relatively serious.Therefore,this paper uses the blockchain technology to study the transaction mode of sharing distributed energy storage.The specific contents are as follows:Firstly,in view of the disadvantages of high operation and maintenance cost and opaque operation process of centralized energy storage sharing platform,the problem of blockchain modeling of distributed energy storage peer-to-peer sharing scenarios is studied from the perspective of blockchain technology.Based on the research and analysis of key technologies of blockchain,this paper analyzes the fitness between peer-to-peer sharing scenarios of distributed energy storages and blockchain technology.Then this paper proposes the use of consortium blockchain as the underlying technical support of distributed energy storage peer-to-peer sharing mode.Next,the concept of full node and light node is proposed.Composition,read and write permissions of nodes in the consortium blockchain are redefined.Proof of Authority is proposed to act as the consensus mechanism of the consortium blockchain.The Geth client provided by Ethereum is used to construct the distributed energy storage sharing consortium blockchain,and the basic functions of the consortium blockchain are tested by performing operations such as transfer,mining,deployment and call of smart contracts.The feasibility and superiority of the consortium blockchain proposed and constructed in this paper is proved by the simulation results.Secondly,in view of low utilization rate of the existing energy storage resources in the power grid of the centralized energy storage sharing mode,the method to write energy storage sharing protocols into the smart contracts proposed by the existing research paper.This method brought high labor cost and the huge storage burden for the blockchain system.Therefore,a double layer transaction of peer-to-peer sharing model of distributed energy storage based on smart contract is proposed.The basic concepts of the proposed peer-to-peer sharing model of distributed energy storage are elaborated.The characteristics of Ethereum and smart contracts are analyzed.Then,a storage contract model based on charging and discharging property of distributed energy storage is proposed,which a smart contract and an energy storage device are one-one corresponding,and the related smart contract of the energy storage device is composed.A double-layer transaction mode based on energy-storage control permit is proposed.With the support of smart contracts,only if the realization of the transfer of energy-storage control permit in the control permit transaction layer,the lessee could execute remote charging and discharging operation of the storage in the command layer.The above contracts are simulated in the Ethereum virtual machine.Then the contracts are deployed to the distributed energy storage sharing consortium blockchain constructed in Chapter 2,and the peer-to-peer sharing process of the storage is simulated through a sharing case.The results verify the feasibility and superiority of the peer-to-peer sharing model proposed in this paper.Finally,this paper encapsulates the distributed energy storage sharing consortium blockchain and the related smart contracts designed and constructed in Chapter 2 and Chapter 3.A decentralized application that supports the function of energy-storage sharing is developed.Users participating in the energy-storage sharing mode can realize the transfer of the energy-storage control permit and remotely execute charging and discharging operation of the energy storage by accessing of the decentralized application.The application has a good human-computer interaction interface and certain application value,which avoids complicated operation when the user directly interacting with the blockchain.