Simulation of the Dynamics of Renewable Energy Sources with Energy Storage Systems

The intermittency of renewable energy sources (RES) constitutes a challenge for effective power system control. Fossil-fuel-based units offering ancillary power services to meet the short-term power imbalance are a financial and environmental burden for the society. Energy storage systems (ESS) can be the solution in view of the electricity market development and growing environmental concern. The major questions are, in what circumstances participation in the day-ahead market (DAM) by means of the RES-ESS co-operation is technically feasible and how to size ESS for PV participation in DAM. This paper is an attempt of addressing these questions. To provide the answer, the simulation model of solar power generation system with battery ESS (BESS) was developed using DIgSILENT Power Factory environment.