Charging port detection
System comprising a current sampling point on a power supply, comprising a vehicle for wired loading a traction battery of the vehicle at the current sampling point, the vehicle has to charge a charging electronics unit and the vehicle for charging via a charging cable to the vehicle external power extraction point is connected so that the charging cable for charging the vehicle external to a station charging device is electrically connectable or the cable has a cable charging apparatus in an established charging connection, the station charging device or the cable charging device is electrically connected to the current sampling point and the current sampling point, an alternating current through the station charging device or through the cable loading device for loading providable has led the supplied AC power from the station charging device or the cable charger for charging via charging power lines of the charging cable is in produced loading compound station charging device or the cable loading device is electrically connected via a pilot line to the charging electronics unit, the charging process is controlled by an which can be placed over the pilot line electric pilot signal, and the charging electronics unit in a charging physical parameters of the pilot signal on the pilot line, physical parameters of the detected current network at the current sampling point over the charging current cables and physical parameters of the station charging device or the cable charging device via the pilot line to form a current sampling point parameters characterizing data set.