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A Virtual Power Plant with a Power Electronic Based Controller


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DOI: https://doi.org/10.15866/iree.v8i4.1876

Abstract


More and more distributed generation (DG) units, including renewable energy based and power electronic interfaced generation units, are being integrated into distribution systems, consequently, conventional passive distribution networks are becoming active networks. An active network may be managed as a Virtual Power Plant (VPP), which has the possibility of sending power into a higher level grid like a generator. However, a VPP may have stochastic and non-ideal characteristics, for instance, power fluctuation, unbalance, non-linearity, harmonic distortions and lack of controllability due to the features of the connected load and renewable power sources. This paper studies the performance improvement of a VPP by using a Virtual Power Plant controller (VPPC). The VPPC is constructed by a power electronic voltage source converter (VSC) and an energy storage device, which can make a VPP to present good controllability of active power and reactive power, and can mitigate the unbalance and harmonics associated with the VPP. Furthermore, in dynamic situations, the VPPC can help to stabilize the VPP and support the grid. Simulation results are presented to demonstrate the effectiveness of the VPPC.
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Keywords


Virtual Power Plant; Virtual Power Plant Controller; Energy Storage; System Dynamics; Power Quality

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References


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