Optimization of two operation strategies for batteries in the low voltage grid

Abstract

Due to the high amount of installed solar power systems in Germany, the low-voltage distribution grids reach their maximum capacities in periods of high solar radiation. In order to ensure a proper integration of solar power systems into the grid, grid reinforcement is a common method to increase the transmission capacity. As an alternative to this costly solution, local battery storage systems can be used to store the surplus generation and limit the feed-in power of the solar power systems into the grid. In paper “Operational Strategies for Battery Storage Systems in Low-voltage Distribution Grids to Limit the Feed-in Power of Roof-mounted Solar Power Systems” are proposed two different operational strategies for battery storage systems, the first strategy or Feed-in chopping and the second strategy or Feed-in damping. After publishing this work, is the implementation of the strategies necessary and perform one operational comparison of the strategies, this our work, first, the optimization of the strategies in order to use the maximum battery capacity and consequentially reduce the feed-in power to the low-voltage grid and second, the implementation of this optimized strategies into the laboratory and determine which of the two operational strategies is the best and in which cases is recommendable the utilization of the first or second strategy.