Research on Multi-layer Intelligent Prevention and Control of Safety Risks in Electric Vehicle Charging and Switching and System Application Technology

With the support of policies and the integration of large-scale electric vehicles into the power grid, electricity safety is receiving increasing attention, including the safety of vehicles, piles, networks, and people. In this process, as the medium for power transmission, the safety risks of the charging station still do not need to be taken seriously. Research on local and platform charging and swapping equipment, through the linkage mechanism of redundant protection, power allocation units, and smart operation platforms, to achieve multi-level intelligent prevention and control of safety risks in electric vehicle charging and swapping. Firstly, the charging and swapping equipment should be combined with existing national standards to optimize equipment selection and functional design, and reduce safety risks; Then, considering the inconvenient expansion of transformers but the current situation of meeting the simultaneous charging of multiple vehicles, an additional power allocation unit is added to monitor the charging demand and remaining power capacity, achieving an effective balance between demand and capacity. Finally, in order to share branch boxes and extend the use of existing molded case circuit breakers and their power lines, while ensuring the maximum use of equipment, intelligent operation platforms are used for precise prevention and control.