Abstract:

Electric vehicle charging stresses distribution grids significantly with high penetrations of electric vehicles. This will lead to grid reinforcement works in several distribution grids. Battery storage is a possible solution to bypass times of grid reinforcement due to electric vehicle charging. In this paper, different operation strategies for such a battery storage are tested at first in simulations. The main difference between the strategies is the necessary input data. A result of the simulation was that the ability of the battery storage to prevent the violation of grid limits depends on the position of the battery storage as well as the used measurements as input data. For the test in the project “Netzlabor E-Mobility-Allee” the two most promising strategies have been chosen. For the strategy with a fixed schedule, a precise model of the low voltage feeder is necessary to determine an appropriate schedule. Nevertheless, it is not possible to prevent all grid limit violations using this strategy. Main advantage is that no measurement devices have to be installed.