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Control of DFIG-Based Wind Generation to Improve Interarea Oscillation Damping

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4 Author(s)
Zhixin Miao ; Transm. Asset Manage. Dept., Midwest ISO, Inc., St. Paul, MN ; Lingling Fan ; Osborn, D. ; Yuvarajan, S.

Power systems with high penetration of wind power usually require long-distance transmission to export wind power to the market. Interarea oscillation is an issue faced in long-distance transmission. Can wind generation based on doubly fed induction generator (DFIG) help to damp oscillations and how? In this paper, a control scheme is developed for the DFIG with rotor-side converter to damp interarea oscillations. The DFIG is modeled in MATLABreg/Simulink utilizing its vector control scheme feature, and inner current control and outer active/reactive power control loops are modeled and designed. A two-area system that suffers from poor interarea oscillation damping along with a wind farm in the area that exports power is investigated. A damping controller is designed and time-domain simulations are used to demonstrate the effectiveness of the controller. The major contributions of the paper are as follows: 1) built a wind farm interarea oscillation study system based on the classical two-area four-machine system, 2) established that in vector control scheme, active power modulation can best help to damp oscillations, 3) successfully designed a feedback controller using remote signals with good interarea oscillation observability.

Published in:

Energy Conversion, IEEE Transactions on  (Volume:24 ,  Issue: 2 )