基于区块链隐私保护的智能电网实时定价  

Real-time pricing based on blockchain privacy protection of smart grid

作　　者：李军祥[1] 张同辉 屈德强 潘龙博 LI Junxiang;ZHANG Tonghui;QU Deqiang;PAN Longbo(Business School,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学管理学院,上海200093

出　　处：《上海理工大学学报》2022年第2期122-130,共9页Journal of University of Shanghai For Science and Technology

基　　金：国家自然科学基金资助项目(72071130);国家自然科学基金匹配项目(2020KJFZ034);上海理工大学大学生创新训练计划项目(XJ2021165)。

摘　　要：当前智能电网实时定价机制未考虑隐私信息泄露对用电量和电价的影响,且忽略了供电商与用户之间的利益均衡。为兼顾隐私保护和供需双方的利益均衡,将区块链隐私信息保护的机制融入到智能电网实时电价的策略之中,依据隐私敏感程度的不同,对用户进行分类,并将区块链的应用程度进行量化,建立基于区块链应用程度的社会福利最大化模型。利用拉格朗日对偶理论和投影梯度法求出最优用电量、最优供电量和最优电价。数值仿真表明:区块链的去中心化性质、混币机制和链下加密技术,能有效保护供需双方的隐私信息,降低供电成本和用电成本,提高供电商的利润和福利。Currently,the real-time pricing mechanism of smart grid does not consider the impact of privacy information disclosure on power consumption and electricity price,and ignores the balance of interests between power suppliers and users.In order to take into account privacy protection and the balance of interests between supply and demand sides,the blockchain privacy information protection mechanism was integrated into the real-time electricity price strategy of smart grid.By classifying users and quantifying the application degree of blockchain,a social welfare maximization model was established on the basis of the application degree of blockchain.The optimal electricity consumption,supply and price were obtained by using the Lagrangian dual theory and the projected gradient method.Numerical simulations showed that the decentralized nature,currency mixing mechanism and off-chain encryption technology of the blockchain can effectively protect the privacy information of both supply and demand,reduce the cost of power supply and electricity consumption,and improve the profit and welfare of the power supplier.

关 键 词：智能电网 区块链 隐私保护 利益均衡 实时定价 拉格朗日对偶 

分 类 号：TM73[电气工程—电力系统及自动化]