Design of Multi-Layer Information Security Protection Scheme for Vehicle-to-Grid System

Vehicle-to-grid(V2G) is an important tool for enhancing the flexibility of new power systems and ensuring real-time power balance. The V2G system has the characteristics of multiple levels of entities and strong openness, making it easy to become the main target and springboard for attacking the power grid. In this context, the article analyzes the communication architecture and potential information security risks of the V2G system. Based on the domestic password algorithm system, a multi-layer and full link V2G system information security protection architecture is constructed, which ensures the safe and reliable transmission of V2G system information through four key technologies: identity authentication, encryption protection, situational awareness, and data sharing. Through testing, it has been shown that in order to ensure the success rate of data encryption and decryption in the V2G system, the system must have a concurrency of less than 1000 times. The encryption and decryption time, throughput, and anomaly rate indicators of the system are excellent. This data scheme can meet the interactive business needs of the V2G and provide important guidance for the information security construction of V2G networks.