电动汽车换电站参与电力市场辅助服务的经济效益研究

换电模式可提高电动汽车的运营效率，能够更好地实现与电网互动。以电动汽车换电站为研究对象，分析换电站的运营模式，建立能量守恒模型和经济收益模型，探索以辅助服务方式提升换电站经济收益的可行性和潜力，研究电池参数、电池配比等关键因素对收益的影响。结果表明：仅通过提升换电站电池数量，并不能有效提升收益。当动力电池的度电成本下降约10%或循环次数提升约15%时，换电站通过辅助服务模式可实现投资收益平衡，相比于降低度电价格提升动力电池的循环次数对换电站运营收益的影响更大。

Study on Economic Benefits of Electric Vehicle Battery Swapping Station Participating in Power Market Auxiliary Service

The battery swapping mode can improve the operation efficiency of electric vehicles(EVs) and achieve better interaction with power grid. This paper took the EVs battery swapping station as the research object, analyzed the operation mode of the station, established an energy conservation model and an economic income model, and explored the feasibility and potential of improving the economic income of the exchange station via auxiliary service in power market. Then, the influence of key factors such as battery parameters and battery ratio on the revenue was analyzed. The results show that, only by increasing the number of batteries in the station, the revenue cannot be effectively improved. However, when the per kilowatt hour cost of the power battery is reduced by about 10% or the number of cycles is increased by about 15%, the investment income balance can be realized, and the impact of increasing the cycle times of power battery is greater than that of reducing the price of kilowatt hour.