Metrological aspects of introducing charging stations for electric vehicles

Electric mobility is a rapidly evolving field, so electricity is considered one of the main alternative fuels. Electricity is a particularly attractive source of energy, which is used for electric vehicles (EVs) in urban/suburban agglomerations and other densely populated areas. An extensive network of EV charging stations is a major factor for using electric vehicles. The main method of EV charging is to connect the on-board charger to the AC power supply. An alternative method of EV charging is to connect the outboard charger to the DC power supply. There are three main options to connect an EV to a charging station: using a special power cable; with a pantograph; via wirelesses connection. A standardized interface between the electric vehicle and infrastructure seems to be one of the most topical challenges in the world of electric mobility. International standards cover payment accounting systems for electricity and provide specifications on the equipment and protocols for meter data exchange. There is an urgent need to draw up national or regional metrological regulations for EV charging. The issue of international and regional standardization of DC electricity meters for using at charging stations remains pressing.