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A control scheme for utilizing energy storage of the modular multilevel converter for power oscillation damping

Taffese, Abel Assegid; Tedeschi, Elisabetta; de Jong, Erik
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Compel2017_pod.pdf (1.060Mb)
URI
http://hdl.handle.net/11250/2468134
Date
2017
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Original version
10.1109/COMPEL.2017.8013415
Abstract
This paper presents a control scheme that utilizes energy storage of the Modular Multilevel Converter (MMC) for Power Oscillation Damping (POD) service. Such a service is used to enhance grid stability by providing damping power in the electromechanical (0.2-2Hz) dynamics range. The scheme uses compensated modulation with average energy control. The aforementioned service comes at the cost of additional energy storage requirement for the MMC. A worst case estimate of this additional capacity, together with potential options to obtain it, is also addressed in this paper. The scheme is validated by simulation studies on a four terminal HVDC test grid.
Publisher
Institute of Electrical and Electronics Engineers (IEEE)

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