IEC TR 62933-2-200:2021（E）介绍了电动汽车（EV）充电站中的电能存储（EES）系统的案例研究，该充电站具有电压水平为20 kV及以下的光伏发电（PV-EES-EV充电站）。EES系统之所以在本文件中得到强调，是因为它们是使充电站（尤其是大功率快速充电站）对电网友好、提高清洁能源发电的自用电量以及增加充电站收入的理想选择。在这个应用中，EES系统通过在各种可用的操作模式下运行，如调峰、功率平滑、负载跟踪、使用时间（TOU）价格套利和辅助服务，表现出优异的性能。根据EES系统的运行特性总结，建议采用一般占空比。

IEC TR 62933-2-200:2021(E) presents a case study of electrical energy storage (EES) systems located in electric vehicle (EV) charging stations with photovoltaic (PV) power generation (PV-EES-EV charging stations) with a voltage level of 20 kV and below. EES systems are highlighted in this document because they are a desired option to make the charging stations (especially the high-power fast charging stations) grid-friendly, improve the self-consumption of clean energy generation, and increase the revenue of stations. In this application, EES systems show excellent performance by running in a variety of available operating modes, such as peak shaving, power smoothing, load tracing, time-of-use (TOU) price arbitrage, and ancillary services. The general duty cycle is recommended based on the summary of the operation characteristics of the EES systems.