摘要
由于高级量测体系(advanced measurement system,AMI)中的智能电表(smart meter,SM)缺乏物理保护,并且会产生大量敏感数据,而现有安全防护方法无法满足AMI的安全需求,为此,提出了一种基于区块链的台区智能终端与智能电表安全防护方法,以保护SM免受网络攻击。首先,构建由海量SM、台区智能终端(边缘计算节点)和云主站组成的“云-边-端”AMI系统架构,以实现绝大部分数据的本地边缘化处理。然后,通过量化SM数据形成链接指纹,并将其进行编码,传输到台区智能终端,其中融入信用共识机制,以初步分析数据,强化AMI的安全防护。最后,将所有台区智能终端视为区块链节点,将各个SM的密钥信息作为区块链的交易信息,实现基于区块链的密钥和数据的可靠管理。基于MATLAB对MICAz motes微型无线测量系统获取的接收信号强度指示符(received signal strength indicator,RSSI)数值进行实验分析,结果表明,当AMI中存在网络攻击时,皮尔逊系数为负值或近似为零,RSSI的变化不再呈现线性特征,并且相比于其他方法,所提方法的能耗最少且安全性能最佳。
Due to the lack of physical protection for smart meters(SM)in advanced measurement system(AMI),and a large number of sensitive data will be generated.However,the existing security protection methods can not meet the security requirements of AMI.Therefore,a security protection method for smart terminals and smart meters based on blockchain is proposed to protect SM from network attacks.Firstly,the"cloud edge end"AMI system architecture,which is composed of massive SM,smart terminals(edge computing nodes)and cloud master station,is constructed to realize the local marginalization of most of the data.Then,the link fingerprint is formed by quantifying SM data,and then encoded and transmitted to the smart terminal of the station area,which integrates the credit consensus mechanism to preliminarily analyze the data and strengthen the security protection of AMI.Finally,all smart terminals are regarded as blockchain nodes,and the key information of each SM is taken as the transaction information of blockchain,so as to realize the reliable management of key and data based on blockchain.The received signal strength indicator(RSSI)values obtained by MICAz motes micro wireless measurement system are analyzed based on MATLAB.The results show that when there is network attack in AMI,its Pearson coefficient is negative or approximately zero,and the change of RSSI is no longer linear.Compared with other methods,the proposed method has the least energy consumption and the best security performance.
作者
罗鸿轩
金鑫
钱斌
赵云
LUO Hongxuan;JIN Xin;QIAN Bin;ZHAO Yun(Electric Power Research Institute,CSG,Guangzhou 510663,China)
出处
《南方电网技术》
CSCD
北大核心
2021年第4期50-58,共9页
Southern Power System Technology
基金
中国南方电网有限责任公司科技项目“新一代智能量测体系关键技术研究与应用示范”(ZBKJXM20180214)。
关键词
高级量测体系
智能电表
链接指纹
区块链
安全防护
信用共识机制
advanced measurement infrastructure
smart meter
link fingerprint
blockchain
security protection
credit consensus mechanism
作者简介
罗鸿轩(1992),男,工程师,硕士,研究方向为电能计量;金鑫(1985),男,高级工程师,硕士,研究方向为电力系统通信技术、智能量测终端及安全技术,jinxin1@csg.cn;钱斌(1989),男,高级工程师,硕士,研究方向为用电大数据分析、电能计量设备及试验技术。
