Dimensioning a Hybrid System with Energy Storage to Balance the Power from Large-Scale Wind Parks. Selected Topics

The worldwide potential of wind power is reflected in its continuously increasing contribution to total electricity production. In particular, the development of off-shore wind park projects can be observed and, in the future, a concentration of wind power generation at coastal locations is expected. The high number of new installations as well as the re-powering process by on-shore wind farms require a new look at the design and operation of power systems. The introduction of hybrid systems that combine wind power plants and energy storage poses an interesting solution to the problems of integrating large-scale wind parks into the power system. The subject of this paper is the design and dimensioning of a hybrid system with regard to some technical and economical factors. To simulate the power generation in large-scale wind farms one complex model with wind speed distribution was created. Connecting these wind farm models to energy storage systems of variable size shows the impact on the total power output of the hybrid system. The results of a few long term simulations with a sensitivity study for an exemplary wind park energy storage system will be discussed in this paper.