Power Quality Improvement using STATCOM in Wind Farms with Constant Speed Induction Generator under Unbalanced Grid Faults

Abstract

This paper presents a mitigation of power quality problems such as shortage of reactive power, voltage fluctuations, voltage and current harmonics due to wind farms connected to the non linear loads. The fault occur in the system are solved by FACTS controller such as STATCOM. The stability of fixed-speed induction generator (FSIG)-based wind turbines can be improved by a STATCOM. Under unbalanced grid voltage dips, the negative-sequence voltage causes heavy generator torque oscillations that reduce the lifetime of the drive train. A STATCOM control structure with the capability to coordinate the control between the positive and the negative sequence of the grid voltage is proposed. This paper also presents current status of mitigation of power quality problems by FACTS controllers.

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Showing 1-10 of 10 references

Comparison of stabilization methods for fixed-speed wind generator systems Power Delivery

  • M Ali, B Wu
  • 2010
Highly Influential
3 Excerpts

Current injection targets for a statcom under unbalanced grid voltage condition and the impact on the pcc voltage

  • C Wessels, S Grunau, F Fuchs
  • 2011
1 Excerpt

European Wind Energy Association Powering europe: wind energy and the electricity grid

  • 2010

Safe current injection strategies for a statcom under asymmetrical grid faults

  • P Rodriguez, G Medeiros, A Luna, M Cavalcanti, R Teodorescu
  • 2010

Statcom-based indirect torque control of induction machines during voltage recovery after grid faults

  • J Suul, M Molinas, T Undeland
  • 2010
1 Excerpt

A review of grid code technical requirements for wind farms Renewable Power Generation

  • M Tsili, S Papathanassiou
  • 2009
1 Excerpt

Low voltage ride through of wind farms with cage generators: Statcom versus svc

  • M Molinas, J A Suul, T Undeland
  • 2008
1 Excerpt

Statcom impact study on the integration of a large wind farm into a weak loop power system Energy conversion

  • C Han, A Huang, +5 authors A.-A Edris
  • 2008
1 Excerpt

Comparison of using svc and statcom for wind farm integration

  • L Xu, L Yao, C Sasse
  • 2006
1 Excerpt