Optimized Operation and System Design of an Energy Storage Device for Post-feed-in-tariff Sales of Wind Energy at the Spot Market

摘要

The relevance of energy storages as important flexibility technology for the prospective energy supply system has been discussed in many projects and studies during the last years. In the context of the project "Netzintegrierte Stromspeicher" Fraunhofer UMSICHT has developed a deterministic optimization model for storage commitment, named GOMES - Generic Optimization Model for Energy Storage. It has the purpose to compare and evaluate different storage applications both technical and economical. Due to its generic nature GOMES is applicable to different storage technologies as well as different markets. Moreover it possesses the particularity that a simultaneous participation in different markets is feasible. Its modular design allows an easy and fast modelling of new scenarios. GOMES applies a rolling horizon to restrict the perfect foresight to a predetermined timeframe. The optimization determines the most beneficial and economical storage commitment and delivers therefore information about the maximal reachable revenue of the examined storage application. This allows to calculate break-even capital costs and to determine the optimal storage plant design.