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According to the above steps of lightweight key management of electric vehicle charging piles, the security of the communication network between high-power charging piles can be guaranteed to a certain extent.
As can be seen from the architecture diagram shown in Figure 1, the charging pile communication network generally consists of three parts: the terminal network, the concentrator device, and the cloud network. The terminal network consists of multiple charging piles, which can be networked by wired or wireless connection.
Compared with the traditional wireless communication network of charging piles, the optimized communication network between charging pile groups can not only realize two-way communication, but also avoid the failure of the concentrator.
Wireless communication technology is usually adopted for remote monitoring of charging piles. This is because the construction site of these charging piles adopts wired wiring, which is di cult and costly.
The experimental results show that after the optimization of the proposed method, the stability and invulnerability of the communication network between the charging pile groups have been efectively improved, and the method has a high convergence speed. Mathematics Subject Classification. 68U35. Received September 14, 2022. Accepted March 25, 2023.
The charging pile receives the communication content from the neighboring piles, including the timestamp of each charging pile and the corresponding active and reactive power increments, and the predicted voltage value.
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