AC or DC power modulation for DFIG wind generation with HVDC delivery to improve interarea oscillation damping

This paper investigates AC or DC power modulation in wind power with HVDC delivery in damping inter-area oscillations. Two approaches of oscillation damping are examined: 1) wind generation real power modulation through its power electronic converters, and 2) HVDC rectifier power modulation. A two-area test system is built in TSAT. The two approaches are described in details. Controller design, eigenvalue analysis and time-domain simulations are carried out to demonstrate the two approaches and their effects.