Utilization of energy storages in low voltage grids with renewable energy sources

This paper deals with problems which occurs in low voltage grid in case of high renewable energy penetration, especially with photovoltaic power plants. Also simple way how to utilize energy storage to address these problems is proposed and simple charge/discharge strategy was designed for energy time shifting and capacity firming. Simulation model in Matlab Simulink was developed and two scenarios based on real data were simulated in order to strategy verification. Results are discussed and evaluated, and also some improvements are suggested.