5G智能电网中具有隐私保护的电力注入系统

Privacy-aware Power Injection in 5G Smart Grid

为了解决5G智能电网中电力回收的安全性与隐私保护问题,文章提出了基于V2G (Vehicle-to-Grid)的具有隐私保护的5G智能电网电力注入系统。在用电高峰期,当电力公司通过V2G的聚合网关发出电力回收请求后,电动汽车等电能存储单元采用Paillier加密体制和Diffie-Hellman密钥协商技术,对不同时隙的电力注入份额进行隐藏和聚合后发送给聚合网关。聚合网关对所有电能存储单元的电力注入数据进一步聚合并发送给电力公司。电力公司利用自己的私钥对聚合数据进行解密得到各个时隙所回收的总电量数据。安全性分析表明,该系统不但可以保护电能存储单元的隐私,而且可以实现注入数据的机密性和完整性。效率分析表明,该系统可显著降低计算复杂度,提高通信效率。

To address the security and privacy protection issues of power collection in 5G smart grid,a privacy-aware power injection system is proposed based on V2G(Vehicle-to-Grid)for 5G smart grid.During peak hours,the power utility sends a power collection request through aggregation gateways in V2G.Power storage units such as electric vehicles encrypt and aggregate power bids of different time slots based on Paillier cryptosystem and Diffie-Hellman key agreement.Aggregation gateways further aggregate the power data of all power storage units and send the result to the power utility.The power utility decrypts the aggregated data based on secret keys to get the number of power collected in different time slots.Security analysis indicates that the proposed system not only protects privacy of power storage units,but also realizes confidentiality and integrity of injection data.Efficiency analysis indicates that the proposed system significantly reduces the computation complexity and improves the communication efficiency.