ESTIMATION OF THE HOURLY POWER DEMAND OF ELECTRIC VEHICLE CHARGERS FOR AGGREGATE LOAD MODELLING CONSIDERING REGIONAL CHARACTERISTICS AND CLIMATE CONDITIONS

The expansion of charging infrastructure for electric vehicles is associated with an impact on power system operations. As an inverter-based technology, this type of load exhibits a dynamic behavior in response to transient voltage and frequency changes, which is different from conventional loads. Usually, the influence of electric vehicle chargers is discussed from the perspective of the distribution system, neglecting the dynamic load behavior. It is not sufficiently clarified how this development will affect frequency stability in the European transmission system. The presented approach enables such an investigation and is based on publicly available data. Regional differences in the distribution of electric vehicles are considered, as are climatic and seasonal factors. Based on this, a sensitivity study is conducted to discuss the relevance ofEVC in in the context of a general trend towards inverter-based loads.