SONG Xiaodong¹, ZHANG Zhongxiu¹, ZHENG Qiao¹, YU Yang¹

　　1. CAUPD Beijing Planning & Design Consultants Ltd., Beijing 100044, China

　　【Abstract】 The popularization of battery swapping technology of the electrification of motor vehicles is an orientation for Beijing to achieve China’s strategy of carbon neutrality. By analyzing the operational characteristics of road traffic in Beijing, the average hourly electric vehicle replacement demand in the city with battery swapping strategy is predicted. Based on the existing battery swap station technology, this paper proposes a centralized battery swap station infrastructure for large-scale battery swap service, and calculates the new power consumption and power load of the battery swap station in the city. Under the carbon neutralization goal, the new power consumption in Beijing should come from wind power and photovoltaic new energy power with zero carbon emissions. According to the fluctuation and randomness characteristics of wind power and photovoltaic power generation in North China, the paper presents a load-following power supply solution for 500 kV flexible DC transmission system at both ends with battery energy storage of battery swap station. With that the minimum installed scale of wind power and photovoltaic and the number of electric vehicle power cells that should be reserved every day in the city are calculated.

　　【Keywords】 carbon neutrality; electrification of motor vehicles; battery swapping; zero carbon power supply; battery storage; Beijing

　　【DOI】 10.13813/j.cn11-5141/u.2021.0038-en