Research On Security Technology Based On Blockchain

After the deepening of power system reform,many power sales companies are directly changing the main body of power trading market,and flexible power trading mode has become a trend.As a distributed power trading mode,energy Internet provides a series of solutions for the flexible access and large-scale utilization of renewable energy.Due to its weak centralization,tamper-proof and traceability,blockchain has become a hot research topic in the new era,and has attracted more and more attention from governments and corporate giants.However,the current block chain system in the transaction throughput,delay and so far can not meet the performance requirements of most applications.In this context,this paper first studies the key technologies of the blockchain,comparing the principle and characteristics of the classical consensus mechanism in Blockchain,POW,Pos and other consensus algorithms have low efficiency,serious energy consumption,however,the traditional distributed consistency algorithms represented by Paxos and Raft do not consider the Byzantine fault tolerance problem,and are not suitable for honest and malicious block chain systems,in this paper,a new algorithm is proposed based on DPOS and PBFT Algorithm,which makes the block chain transaction faster and solves the problem of low efficiency and serious energy consumption in the process of block chain transaction,based on the smart contract,distributed bookkeeping and point-to-point transaction of block chain,the basic application structure of power transaction based on block chain is constructed,which includes the underlying technology,development platform,development language and application functions.Finally,the paper simulates the transaction model of power system,and introduces the block chain model into the power transaction.The platform architecture is divided into the basic platform,the block chain module and the transaction platform Web application.The producer and consumer can send the transaction request through the blockchain network,obtain the clearing price through the two-way auction pricing mechanism,respond to the transaction request,trigger the state machine to execute the contract,complete the transaction,and the test result is in line with the expected effect,it provides a reference for the further research of blockchain.