Wide-area power oscillation damper for DFIG-based wind farm with communication delay and packet dropout compensation.

• Wide-area power oscillation damper (WPOD) is used to damp interarea oscillation. • Networked predictive control-based WPOD is proposed for DFIG-based wind farm. • The data transmission and packet dropouts of WAMS are modeled in detail. • The proposed WPOD can compensate the time delay and data dropout actively. • Case studies are conducted to verify the effectiveness of the proposed WPOD. Data dropouts and time delays introduced in communication network would degrade the damping performance of the wide-area power oscillation dampers (WPODs) or may even cause instability of the closed-loop system. This paper establishes a data transmission model in the network control system (NCS) and proposes a networked predictive control (NPC) based WPOD of doubly-fed induction generator (DFIG)-based wind farm to damp inter-area oscillations in a large-scale interconnected power system. The major advantage of the proposed WPOD is that it can actively compensate packet dropouts and communication delays involved in wide-area control channels. Additionally, online model identification is employed to handle the parameter uncertainties and operating condition variations of the power system. Case studies are undertaken on the 16-machine 68-bus power system. Simulation results show that the proposed WPOD can provide better damping performances than those of the conventional WPOD over a wide range of operating conditions and different communication delays and packet dropouts. [ABSTRACT FROM AUTHOR]