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Since there is a limit for the hydro turbine output, the rest of either power shortage or surplus power need to be com-pensated by the grid. Basically, the hydro power plant is responsible for balancing the active power between the wind farm and dynamic load. At the same time, hydro turbine should be controlled in an optimized way that without large turbulence. In the third place, optimized control schemes for the hydro unit in VPP model to decrease its effects on transmission grid are implemented in Simulink model. During the simulation process, the generation and consump-tion unites are running according to the real history data located in external database. The simplified system contains a wind farm, a hydro power plant, a dynamic system load and an infinite bus representing the large transmission grid. Secondly, the simplified VPP model is built on MATLAB/Simulink software.
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In this project, the literature review of VPP concept, architecture, existed project and the survey of VPP in Sweden are being conducted first. The whole system can be viewed as a single large-capacity power plant from the system‘s point of view. Virtual Power Plant (VPP) is a concept that aggregate Distributed Energy Resources (DER) together, aims to overcome the capacity limits of single DER and the intermit-ted natural characteristics of renewable energy sources like wind and solar. 2012 (English) Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE credits Student thesis Abstract