Robust STATCOM control for the stabilisation of fixed-speed wind turbines during low voltages

M. J. Hossain*, H. R. Pota, R. A. Ramos

*Corresponding author for this work

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

This paper presents a robust voltage control scheme for fixed-speed wind generators using a static synchronous compensator (STATCOM) controller. To enable a linear and robust control framework with structured uncertainty, the overall system is represented by a linear part plus a nonlinear part that covers an operating range of interest required to ensure stability during severe low voltages. The proposed methodology is flexible and readily applicable to larger wind farms of different configurations. The performance of the control strategy is demonstrated on a two area test system. Large disturbance simulations demonstrate that the proposed controller enhances voltage stability as well as transient stability of induction generators during low voltage ride through (LVRT) transients and thus enhances the LVRT capability.

Original languageEnglish
Pages (from-to)2897-2905
Number of pages9
JournalRenewable Energy
Volume36
Issue number11
DOIs
Publication statusPublished - Nov 2011
Externally publishedYes

Keywords

  • Dynamic voltage stability
  • Linearisation
  • Nonlinearity
  • Robust control
  • STATCOM

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