Art der Publikation  Konferenz
AutorenDr.-Ing. Andreas Uphues, Dipl.-Ing. Kilian Nötzold, Dr.-Ing. Ralf Wegener, Univ.-Prof. Dr.-Ing. Stefan Soter, Griessel, R.
TitelSupport of grid voltages with asymmetrical reactive currents in case of grid errors
KonferenzInternational Conference on Industrial Technology
OrtCape Town
LandSouth Africa
AbstractDue to the increasing wind power penetration, grid codes of system operators require low voltage ride through (LVRT) capability for wind turbines (WT). Additionally the WT has to support the power system stability in LVRT cases by supporting the grid with reactive power. By feeding symmetrical reactive currents in case of asymmetrical grid errors, as required in many actual grid codes, the phase voltage of the undistorted phase will increase above the upper voltage limit. This paper shows a strategy to feed asymmetrical reactive currents into the distorted grid without increasing the phase voltage in the undistorted phase.


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