METHOD AND REGULATION AND/OR CONTROL DEVICE FOR OPERATING A WIND TURBINE AND/OR A WIND FARM, AND WIND TURBINE AND WIND FARM

摘要

The invention relates to a method for operating a wind turbine and/or a windfarm forfeeding electric power into an electrical supply grid, wherein an outputpower, in particularan active and/or reactive power, is regulated by means of at least one powerregulationmodule of a regulation and/or control device, wherein provision is made for apowerregulation input value to be preset and a power regulation output value to bedeterminedfrom the power regulation input value and for a power regulation output valueto beoutput, and provision is additionally made for a time profile of the outputpower of thewind energy generation to be detected over a detection time period and for atime profileof the line voltage of the electrical supply grid to be detected over adetection time period,wherein a check is performed over the detection time period to ascertainwhether theoutput power and the line voltage have an oscillation profile. In accordancewith theinvention, provision is made for an oscillation with a period (T) and with anamplitude (A)to be assigned to the oscillation profile and for it to be established thatthe oscillationcontinues over the detection time period and does not decrease in the process,and for asignal to be output for signalling an oscillation buildup state.