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Method and device for ascertaining an estimate of at least one measured value of a wind power installation

A technology for wind equipment and measurement values, which is applied in the control of wind turbines, monitoring of wind turbines, mechanical equipment, etc., can solve problems such as unavailability, and achieve the effect of ensuring reliability and improving utilization.

Active Publication Date: 2016-05-18
WEIDMULLER MONITORING SYST GMBH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, if one of the sensors for the bending moment at the blade root fails, an IPC regulator does not have enough data to ensure that the angle of attack of each rotor blade is optimized for different air inflows

Method used

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  • Method and device for ascertaining an estimate of at least one measured value of a wind power installation
  • Method and device for ascertaining an estimate of at least one measured value of a wind power installation
  • Method and device for ascertaining an estimate of at least one measured value of a wind power installation

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Embodiment Construction

[0033] The same or similarly acting elements are designated by the same or similar reference numerals in the following figures. Furthermore, the illustrations of the figures, their description and the claims contain numerous features in combination. It will be clear to a person skilled in the art here that these features can also be considered individually or in other combinations which are not explained in detail here. Also in the following description the invention may be described using different scales and dimensions, it being understood that the invention is not limited to the scales and dimensions described. Furthermore, the method steps according to the invention can be carried out repeatedly or in a sequence different from that described. If an embodiment contains an "and / or" association between a first feature / step and a second feature / step, it can be interpreted as, according to an embodiment, the embodiment has both the first feature The / step also has the second ...

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Abstract

The invention discloses a method for ascertaining an estimate (S1) of at least one measured value (M1, M2, M3) of a wind power installation (WKA), wherein said measured value represents in particular the wind force at the level of the rotor The bending moment at the blade root of the rotor blade of the device. The method comprises the step of reading (300) the measured values ​​of said rotor blades and the angle of attack (u). Furthermore the method comprises the step of adapting (302) a model simulating the estimation of said measured values ​​on the basis of a modeling rule for the association between said measured values ​​and said angle of attack, wherein in The model is adapted using the measured values ​​read and the angle of attack read. Finally the method also comprises the step of providing (304) an estimate of at least one measured value under the condition of using said model.

Description

technical field [0001] The invention relates to a method and a device for ascertaining an estimate of at least one measured value of a wind power installation. Background technique [0002] The goal of the regulation of modern wind power plants in the rated speed range is to avoid overloads transmitted from the rotor to the drive mast and tower system / pod system. To date, a collective pitch control (English: Collective Pitch Control = CPC) of all rotor blades has been used for this purpose. By changing the pitch angle, here also referred to as the angle of attack (Anstellwinkel), the aerodynamic inflow angle is reduced and thus a reduction of the dynamic pressure causing the transmission torque is achieved. The rotor blades can also be used as aerodynamic brakes, in which case the rotor blades are arranged completely along the wind flow in the flag position or the inflow angle is increased so strongly that they interrupt the air flow. [0003] Recently there has been inten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/04
CPCF03D7/00F03D7/045F05B2260/80F05B2270/107F03D17/00Y02E10/72
Inventor C·艾特纳F·黑斯M·福斯B·布希塔拉
Owner WEIDMULLER MONITORING SYST GMBH
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