摘要:
Verfahren zum Überwachen des Betriebs einer Windenergieanlage (1), die einen von einem Windrotor (12) mit mindestens einem Rotorblatt (13), dessen Pitchwinkel (θ) verstellbar ist, angetriebenen Generator (15) zur Abgabe elektrischer Leistung aufweist, wobei die Windenergieanlage (1) mit einem vorgebbaren Leistungsreduktionssollwert (r) betrieben werden kann. Erfindungsgemäß ist vorgesehen ein Bestimmen, ob die Windenergieanlage (1) reduziert betrieben wird oder nicht, umfassend die Schritte: Bestimmen, ob eine Veränderung eines Windrotorbetriebsparameters (ausgewählt aus einer Gruppe bestehend aus einer Drehzahl des Windrotors und dem Pitchwinkel (θ)) gegenüber einem Referenzwert (θ ref ) vorliegt, Bestimmen, ob die Windenergieanlage (1) im Teillastbetrieb läuft, Prüfen, ob ein Leistungsreduktionssollwert (r) vorgegeben ist, und Ausgeben eines Signals für eine wirksame Reduktion ("E") dann, wenn alle vorgenannten Bedingungen erfüllt sind. Es wird somit durch eine Kombination von Windrotorbetriebsparameterüberwachung einerseits und Fallunterscheidung hinsichtlich der Betriebsart und des Vorhandenseins eines Leistungsreduktionssollwerts (r) andererseits erkannt, ob eine tatsächliche, das heißt wirksame Reduktion stattfindet. Die Erfindung bezieht sich ferner auf eine zum entsprechenden Betrieb ausgebildete Windenergieanlage (1).
摘要:
A method for operating a wind turbine is provided. The wind turbine 10 generates a sound level 140. The method includes selecting a desired sound level 210; calculating at least one operating parameter by inputting the desired sound level to a model; and operating the wind turbine according to the at least one operating parameter. The method further includes measuring the sound level 140 and based on the measured sound level 340, calculating at least one of a redefined desired sound level and a revised model. Furthermore, the method includes calculating at least one redefined operating parameter by at least one of inputting the redefined desired sound level 210 to the model and inputting the desired sound level to the revised model.
摘要:
The invention provides a method of controlling noise emission from a wind turbine comprising at least one rotor blade (1, 2, 3). The inventive method comprises steps of: Providing wind shear data comprising wind shear values as a function of height over ground; Determining an expected noise emission based on the wind shear data; and Controlling the wind turbine to reduce noise emission from the wind turbine in accordance with the expected noise emission.
摘要:
An adaptive wind turbine generator (WTG) control system comprising a measurement system MS with sensors A1, A2, MC arranged to perform measurements of mechanical vibrations of one or more mechanical components of the WTG, at a plurality of operating conditions for the WTG. A storage unit SU stores, in a measurement database MD, measured data and corresponding operating condition OC data for the WTG. An operating condition manager OCM determines how to operate the WTG, including rotor speed PSC, according to a control algorithm in response to the data stored in the measurement database MD. Hereby, individual vibration measurements on critical components such as electric power generator and blades of the WTG can be taken into account in determining which rotor speed windows to avoid. This allow a more power efficient WTG, since a large safety margin around calculated or predetermined tabulated rotor speed windows can be avoided. Further, with a continuous update of the measurements, the control system can take into account variations in the vibration behaviour of the components over time.
摘要:
A method for operating a horizontal axis wind turbine (10) is provided, the wind turbine including: a rotor (18) including a rotor blade (22), wherein the rotor is rotatably coupled to a nacelle (16), and the rotor is rotatable about a horizontal rotor axis (30) extending through the nacelle (16), and the nacelle is rotatably coupled to a tower, the nacelle rotatable in a yaw plane (200) about a yaw axis (38). The method includes determining a wind direction (28); determining a yaw angle setting (210), wherein the yaw angle setting deviates from an alignment of the rotor axis and the wind direction in the yaw plane; yawing the nacelle to the yaw angle setting; and operating the wind turbine for example to generate electricity.
摘要:
The present invention relates to an acoustic noise monitoring system for a wind turbine, comprising: a microphone for monitoring acoustic noise, the microphone adapted to be mounted to the exterior of a wind turbine nacelle; an input, the input adapted to receive operating conditions data from a wind turbine; a processor, the processor adapted to receive data from the microphone and the input; and storage memory, adapted to store the acoustic noise data and the operating conditions data. The processor is adapted to apply a transfer function to said acoustic noise data to correlate said data with a set of acoustic noise data measured at a remote location from the wind turbine. The system may comprise a controller adapted to generate a control signal, for outputting to a wind turbine controller, for adjusting the operating parameters of the wind turbine in dependence on said correlated data.
摘要:
The invention provides a stall sensor for a wind turbine, a wind turbine comprising such a stall sensor and a method of operating such a wind turbine. The stall sensor comprises detector means (10) adapted to measure vibration of a rotor blade of the wind turbine and to output a vibration signal representative of the vibration of the rotor blade, conversion means (11) connected to the detector means (10) and adapted to determine a noise figure representative of a spectral signal content within a frequency band of the vibration signal received from the detector means (10) and arbiter means (12) connected to the conversion means (11) and adapted to signal a presence or an absence of stall based on the noise figure received from the conversion means (11).