Description
Although grid operators have invested in developing technology that controls renewable energy, its fluctuation and predictability is still a challenge for the sector. This fact, along with the increase of renewable energy in the energy mix, calls for innovative technological solutions that enhance grid integration, and at the same time preserve the stability and the safety of the system. In this context, energy storage systems are an additional technology that could solve these problems and enable higher levels of integration of renewable energy solutions (RES). In Spain, the greatest benefit in the use of energy storage systems (ESS) could be obtained in wind power systems, mainly due to the high amount of installed power facilities.The project will use energy storage systems (ESS) based on lithium‐ion technology and it has the following objectives: - determine the appropriate configuration for the ESS installation to balance fluctuations in the wind energy power output. - improve renewable energies grid integration. - develop and experimentally validate the lithium‐ion energy storage system and its control algorithms.
Summary of project results
One of the major challenges of renewable energy systems (RES) is its dependence on climatic conditions, and subsequent intermittent production. It t is therefore necessary to find solutions that enhance grid integration of these technologies. Energy storage systems (ESS) are an alternative that could enable higher levels of integration of renewable energy. As result of the project a software tool for the simulation of wind farm storage systems has been developed. The tool visualizes the behavior of a battery of certain dimensions when connected to a wind farm. IBERDROLA has the knowledge to evaluate the suitability of different topologies in the design and dimensioning of batteries to be applied to developments of joint generation with wind energy. The project has allowed IBERDROLA to be in a position to dimension this type of facilities in order to allow the wind farms provide additional services to the electric system such as frequency regulation, when the market permits it, and to give economic signals necessary to undertake these investments with reasonable profitability. The acquired knowledge and tools will reduce the risk of planning, design and choice of components, which reduces investment costs and, therefore, optimizes management and the costs of energy (LCoE) offered to the electric system.
Summary of bilateral results
Collaboration with SINTEF has provided added value to the project due the proven capabilities that this technology center has achieved in the last years and the great reputation in the renewable and grid integration field.