1 Scope
This part of IEC 62933, which is a Technical Report, 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.
This document includes the following elements:
– overview of general PV - EES - EV charging stations;
– operational analysis of EES systems in typical project cases;
– summary and recommendati...