DC Electric Vehicle Charging Infrastructure – Methods for Periodic Verification

Due to the increasing number of electric vehicles, the necessary charging infrastructure is extending. For fast charging of electric vehicle batteries and for integration of the charging stations into the electrical infrastructure (e.g. vehicle-to-grid - v2g, grid-friendly behaviour), more and more direct current electric vehicle charging stations (DC-EVCS) are installed. These have to be verified periodically in order to ensure long-term safe operation for users and operators. This contribution focuses on the periodic verification of such DC-EVCSs. Currently, there is a lack of directly applicable international and national normative documents as well as standards for reproducible verification. Existing standards in this context are summarized and a proposal for a suitable scope for verification guidelines is presented. Furthermore, the basic concept of a testing device demonstrator for the grid-independent verification of DC-EVCSs is shown.