1 / 7

EWEC 2006 – IEA ANNEX XXI SPECIAL SESSION

EWEC 2006 – IEA ANNEX XXI SPECIAL SESSION. Assessment of structural dynamics for model validation of induction generator-based wind turbines. Olimpo Anaya-Lara, G. Ramtharan Ervin Bossanyi and Nick Jenkins. IEA Annex XXI. Dynamic Models of Wind Farms for Power System Studies. OBJECTIVES.

ryann
Download Presentation

EWEC 2006 – IEA ANNEX XXI SPECIAL SESSION

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. EWEC 2006 – IEA ANNEX XXI SPECIAL SESSION Assessment of structural dynamics for model validation of induction generator-based wind turbines Olimpo Anaya-Lara, G. Ramtharan Ervin Bossanyi and Nick Jenkins IEA Annex XXI Dynamic Models of Wind Farms for Power System Studies

  2. OBJECTIVES • Suggest which representation of the rotor structural dynamics is more appropriate for a particular study to ensure the correct validation of dynamic models of Fixed-Speed Induction Generator (FSIG) and Doubly-Fed Induction Generator (DFIG) wind turbines • Develop FSIG and DFIG performance assessment during electrical transient such as three-phase faults (voltage dip) and network frequency variations • Conduct studies in GH Bladed, which offers a suitable common platform with highly developed mechanical/electrical systems of FSIGs and DFIGs

  3. Rotor structural dynamics Blade bending motions In-plane blade bending Out-of-plane blade bending Flexible structure of a wind turbine rotor As rotor size increases blade flexibiities becomes significant and need to be represented

  4. Frequency components of full rotor dynamics Frequency component of typical two-mass model Natural frequency of vibration Low-speed shaft torque response (and harmonic spectrum) with full rotor structural dynamics during a 50% voltage sag (300 kW FSIG-based wind turbine) • Single-mass model: neglects blade and shaft flexibility • Typical two-mass model: only considers shaft flexibility • Full model in Bladed: Complete representation of rotor structural dynamics (shaft and blade flexibilities)

  5. Assessment during a three-phase fault 300kW FSIG during a three phase fault (80% voltage drop, 20% retained voltage) 2MW DFIG during a three phase fault (85% voltage drop, 15% retained voltage)

  6. Assessment during frequency variation Applied frequency variation at the terminal of the generators 300kW FSIG-based wind farm 2MW DFIG-based wind farm

  7. Conclusion and recommendations • Rotor structural dynamics can influence the wind turbine response during electrical faults. Hence, for fault studies a model of the structural dynamics that includes both shaft and blades flexibilities may be more appropriate. • Rotor structural dynamics have little effect on wind turbine performance in the event of loss of generation (frequency variations), therefore a simple single-mass model representation of the rotor structural dynamics may be appropriate for this type of studies

More Related