Frequency Regulation with the Lifespan of EVs Batteries

Abstract

In this paper, the model of EVs batteries with lifespan factors is established. As one part of power grid, it is proved to be effective to the primary regulation. According to a power law equation in which the capacity loss of batteries follows the current, temperature and DOC/DOD with time,the model is established. In this model, current and DOC/DOD are the main factors.By using the data from the simulation of power grid, the capacity loss of different strategies can be analysed.When charging/discharging integrated, in one cycle, the capacity loss of EVs batteries can be obtained at room temperature.