摘要
随着“双碳”目标的推进及新能源的广泛接入,电力市场交易主体数量激增后相应的管理、运营复杂程度大幅增加。基于区块链技术的电力市场交易平台是解决交易过程安全、高效和公平问题的有效途径,其中共识机制是电力市场区块链技术的关键。RAFT适用于异步网络、节点动态变化的区块链,但存在易产生选举纠纷和无法适应恶意节点的缺点,为此提出基于信用评分的电力交易区块链改进RAFT共识机制,结合电力市场运行特点,利用信用评分的方式替代节点投票避免选举纠纷,提高RAFT选主的速度;通过设置审核节点对日志复制和选举结果进行审核,提高RAFT对恶意节点的适应能力;通过以上改进在满足集群节点有效一致性的要求下提高了RAFT共识机制的速度和吞吐量。最后通过实例模拟验证了本文所提改进RAFT共识机制的有效性和速度。
With the promotion of“carbon peaking and carbon neutrality”goals and wide access of renewable energy,the corresponding management and operation complexity of electric power market transaction subject have increased greatly with the dramatically increased number of participants.Power market transaction platform based on blockchain technology is an effective way to solve the safety,efficiency and fairness problems in transaction process.And the consensus mechanism is the key of the blockchain technology in power trading.RAFT is suitable for blockchain with dynamic changes,asynchronous network and node mobility.But it has disadvantages such as easy election disputes and inability to adapt to malicious nodes.Therefore,this paper proposes an improved RAFT consensus mechanism for power transaction blockchain based on credit scoring.The RAFT consensus mechanism is combined with the operation characteristics of power market.And the election disputes and the speed of RAFT master selection are improved by replacing node voting with credit scoring.The adaptability of RAFT to malicious nodes is improved by setting audit nodes for auditing log copy and election results.The above improvements can meet the requirements of effective consistency of cluster nodes and improve the speed and throughput of RAFT consensus mechanism.Finally,the effectiveness and rapidity of the improved RAFT consensus mechanism proposed in this paper are verified by a practical case simulation.
作者
邹贤
沈力
张伟
曹武
杨铭
ZOU Xian;SHEN Li;ZHANG Wei;CAO Wu;YANG Ming(Kunming Power Exchange Center,Kunming 650011,China;NR Electric Co.,Ltd.,Nanjing 211102,China;Southeast University,Nanjing 210096,China)
出处
《南方电网技术》
CSCD
北大核心
2022年第6期132-139,共8页
Southern Power System Technology
关键词
区块链
共识机制
RAFT
电力交易
信用评分
blockchain
consensus mechanism
RAFT
power transaction
credit scoring
