Power Oscillation Damping From VSC–HVDC Connected Offshore Wind Power Plants
The implementation of power oscillation damping service on offshore wind power plants connected to onshore grids by voltage-source-converter-primarily based high voltage direct current transmission is mentioned. Novel design tips for damping controllers on voltage-source converters and wind power plant controllers are derived, using phasor diagrams and a check network model and are then verified on a generic power system model. The effect of voltage regulators is analyzed, which is important for choosing the most sturdy damping strategy. Furthermore, other usually disregarded sensible implementation aspects regarding real wind power plants are discussed: 1) robustness against control/communication delays; 2) limitations because of mechanical resonances in wind turbine generators; three) actual capability of wind power plants to produce damping while not curtailing production; and four) power-ramp rate limiters.
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