Benefits and control of STATCOM with energy storage in wind power generation

This paper presents the design, control and analysis of a distribution STATCOM enhanced with an energy storage device (D-STATCOM-EnS) when combined with a wind farm comprising fixed speed induction generators. In this paper it is shown that the D-STATCOM-EnS, controlled via a decoupled vector control technique, is an effective way of reducing voltage flicker emissions at the point of common coupling (PCC), removing the wind speed fluctuations and improving the transient stability of a wind farm. Energy storage rating requirements are discussed in relation to the level of power quality obtained.