Method for operating offshore wind turbine plants based on the frequency of their towers
AssigneeAerodyn Engineering GmbH
InventorSonke Siegfriedsen
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Abstract
Method for operating a wind power plant provided with a rotor speed regulating device and involving the corresponding steps: determining the in each case critical natural frequencies f of the plant and/or plant parts, determining the rotor speed range in which there is an excitation of the overall plant and/or individual plant parts in the critical natural frequency range thereof and operating the wind power plant solely above and below the critical speed range, whilst rapidly passing through said critical speed range.
Claims4
Method for operating a wind power plant, which is provided with a device for regulating the rotor speed at which the critical natural frequencies of the plant and/or plant parts are determined, the speed range of the rotor is determined at which there is an excitation of the overall plant and/or individual plant parts in the range of their critical natural frequencies and the wind power plant is only operated above and below the critical speed range accompanied by a rapid passage through said critical speed range, characterized in that the critical natural frequencies of the plant and/or plant parts are constantly determined and the forbidden speed range in the plant control is correspondingly displaced.
Method according to one of the preceding claims, characterized in that the critical natural bending frequency is determined by means of acceleration sensors, strain gauges or path sensors.
Dependencies are inferred from the claim text.