This paper presents the potential technical impact of electric vehicle (EV) integration on distribution grids in various regions by load flow calculation, in case the battery of the EV is considered only as additional load. According to the results of the simulation, e.g. increasing loading factor of transformers, different battery charging scenarios were compared in order to identify the most critical case for the examined power grids. The mobility behaviour of each main user group has been stochastically modelled based on the study "Mobility in Germany 2008" (MiG 2008). The usage of EV for each group can be simulated using the developed model. Considering the various assumed charging scenarios e.g. different charging power the load curves of each battery could be generated. Thereby, the battery charging characteristics has been taken into account, e.g. the charging power depending on SOC. Totally 2000 load curves of batteries from different user groups were generated for each charging scenario. By evaluating the measured load data for 87 different households, the log-logistic distribution and its parameters for each hour of one day are used for modelling the household loads stochastically. According to the measured maximum peak load and the number of grid connections from low voltage (LV) grids, the commercial customers were modelled using standard load profiles. The medium voltage (MV) distribution grid and the representative LV grids in different regions were modelled in the simulation program. In case of assumed EV penetration, the developed load profiles of the household with and without EV were then assigned to the randomly selected grid connections respectively. Load flow calculation has been then performed, and the results were saved for analysis.
Possibility of electric vehicle integration into existing distribution grids in various regions
2011
6 Seiten, 7 Bilder, 1 Tabelle, 4 Quellen
Conference paper
Storage medium
English
Smart integration of electric vehicles into European power grids
Fraunhofer Publica | 2010
|Optimized Integration of Electric Vehicles in Low Voltage Distribution Grids
BASE | 2019
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