A Control Strategy for Transient Stability Improvement of Doubly-Fed Wind Power Generation System

Abstract:

A novel inverter control strategy to enhance the transient stability of grid-connected wind farm based on doubly-fed induction generator (DFIG) is presented. Adding transient angle control strategy in the rotor side converter active control loop, this can dissipate the system unbalancing energy and restrain the system oscillations by the variation of wind turbine speed. Adding transient voltage control strategy in reactive control loop, this can provide fast reactive power compensation and support the restoration and reconstruction of the grid voltage when fault occurred. The control strategy which can improve the transient Angle stability and transient voltage stability at the same time is put forward. Finally, a testing system including a DFIG-based wind farm is realized using DigSILENT/Power Factory, the strategy validation and the contribution to power system stability enhancement are verified by simulation.

• Periodical: Advanced Materials Research (Volumes 953-954)
• Pages: 337-341
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.953-954.337
• Online since: June 2014
• Authors: Chao Xu*, Jin Ling Lu, Jin Long Zhou
• Keywords: Double Fed Induction Generation (DFIG), Inverter Control, Transient Stability, Unbalancing Energy

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