Dynamic Characteristics Of The Doubly-fed Induction Generator Based Wind Turbine Under Grid Fault Conditions
Publication year: 2017 | GMSARN International Journal
Authors
- Trong Tuan Phan
- Van Liem Nguyen
- Phat Trien Huynh
- Hoai Tam Tran
Abstract
The Doubly-fed induction generator (DFIG) wind turbine (WT) is an integrated part of distributed generation system. The use of DFIG in wind farms is growing rapidly because of its advantages in decoupled active and reactive power control. However, one of the main disadvantages of DFIG is that it is very sensitive to grid faults. To analysis dynamic behaviors of DFIG during grid faults, a model including wind wheel, wind speed, drive train, generator, and converters has been proposed.
This paper examines the use of distribution static compensator (D-STATCOM) as a dynamic voltage restorer at the point of common coupling (PCC) to improve the grid fault ride-through (FRT) capability and thereby protecting system stability during disturbances. The simulation results illustrate the comparative dynamic characteristics of the DFIG based wind turbine when a sudden short circuit at PCC is introduced. Besides, the paper also shows detailed comparisons of the transient behaviors between DFIG and conventional induction generator wind turbine under grid fault conditions.
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