Modeling And Evaluation Of Electric Vehicle Charging Network Based On Open Charging Protocol

The booming development of the electric vehicle industry provides new ideas for solving the increasingly serious energy problems,and it is inconsistent with the national standards in the charge and discharge intervals necessary for the use of electric vehicles,especially for the internal.However the risks that the entire service platform network environment may generate have not been recognized.In order to solve this problem,a model of an attack threat scenario of a charge and discharge transaction service network based on an open charging protocol is established here,and a security protection method in the charge and discharge transaction service network is proposed.Aiming at the form of witch attack,a protection mechanism based on security certificate is proposed.The sybil attack is a kind of highly-attacked network attack.It is characterized by that an attack subject may have multiple identities.Due to the joint role of multiple avatars in the network,the credible role can be reduced and the attack is realized.Due to the multiple false identity information generated by the sybil attack,the verification method of the security certificate can effectively resist it.However,since the security certificate has various problems such as being replaced,misappropriated,there is also a possibility of using the security certificate to conduct a witch attack.This paper proposes to divide the network into regional networks in the charge and discharge service network.Using the roadside unit in the regional network,the charge and discharge service subsystem and the area controller as the service backend work together to detect possible witch attacks in the area to ensure that the security certificate is trusted and available.Based on the proposed scheme,the wireless communication simulation software ns3 and road simulation software sumo are used to obtain the road conditions and the impact on the status of the charge and discharge service network security certificate.The experimental results prove that the proposed solution can improve the security certificate of the entire service area for witch The defense effect of the attack better balances network security and communication efficiency.