A control scheme for utilizing energy storage of the modular multilevel converter for power oscillation damping
Chapter
Submitted version
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http://hdl.handle.net/11250/2468134Utgivelsesdato
2017Metadata
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- Institutt for elkraftteknikk [2411]
- Publikasjoner fra CRIStin - NTNU [37186]
Originalversjon
10.1109/COMPEL.2017.8013415Sammendrag
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.