Research On User Privacy Preserving In Vehicle To Grid Network

Vehicle to grid technology is an important part of the smart power grid with a core concept that to use two-way power and information flow and exchange in a controlled state between electric vehicles and smart grid. V2G connected the isolated electric vehicles and the power grid through advanced information, it makes electric vehicle to participate in demand side management and realize the electric vehicles to provide ancillary services through the infrastructure for the grid. However, V2G is a double-edged sword, it provides ancillary services to the grid and also brings a huge challenge for the privacy of V2G networks.This paper focuses on the privacy-preserving of the vehicle participants in V2G. Anonymous authentication technology is the user can prove the legitimacy of the identity without revealing any information about his real identity, so it has become a widely used technique in privacy protection system. First of all, this paper summarizes the privacy and the privacy-preserving technology, and to the anonymous authentication technology is introduced in detail. Secondly, electric vehicle is divided into charging/discharging state and running state on the basis of the smart grid and vehicle to grid technology. And then this paper analysises the V2G structure and the facing privacy problems in the V2G network, and summarizes the advantages and disadvantages of the existing privacy protection methods in V2G network. Then, this paper proposes a privacy protection scheme based on CRT and full homomorphic encryption for the privacy concerns in V2G networks on the basis of existing privacy protection methods, and analysises the privacy of identity, location and address information during transmission, storage and processing. Finally, this paper gives a simulation for the proposed privacy protection system. The simulation result shows that the scheme meets the electric vehicle privacy demands during the charging/discharging operation.