Low frequency active power oscillation damping using a MMC-VSC HVDC link

This paper investigates the use of MMC HVDC for low frequency active Power Oscillations Damping (POD). The advantage of the MMC topology is that it the converter has an inherent energy storage capability and some of this capability can be used to store or release energy corresponding to active power oscillations without affecting the HVDC voltage level. The proposed MMC POD controller has been validated by PSCAD simulations. Results from the simulation studies reveal that the MMC can be used for low frequency active power oscillations damping.