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Wind turbine with tower deflection detection

A technology of wind turbines and towers, which is applied in the direction of wind turbines, monitoring of wind turbines, installation/supporting configuration of wind turbines, etc. It can solve the problems of inaccuracy, heavy measurement, etc., and achieve the effect of easy handling, installation, and easy installation

Pending Publication Date: 2021-11-05
SIEMENS GAMESA RENEWABLE ENERGY AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these measurements are sometimes burdensome and inaccurate

Method used

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  • Wind turbine with tower deflection detection
  • Wind turbine with tower deflection detection
  • Wind turbine with tower deflection detection

Examples

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Embodiment Construction

[0028] The illustrations in the figures are schematic. It should be noted that in different figures similar or identical elements are provided with the same reference numerals.

[0029] figure 1 A side view of a tower 1 of a wind turbine according to an embodiment of the invention is shown. The wind turbine further comprises a nacelle (not shown) having at least one rotatable blade (not shown) and a tower deflection detection device.

[0030] The tower deflection detection device includes: a transmitter 2 configured to transmit a first electromagnetic signal 100 having a certain frequency; a first leaky feeder 3 having a plurality of holes A 1 、A 2 、A 3 、A 4 and a receiver 4 connected to the first leaky feeder 3 . The transmitter 2 may be placed at the radial center of the tower 1 and the first leaky feeder 3 may be placed eccentrically with respect to the radial center of the tower 1 . Preferably, the first leaky feeder 3 is arranged adjacent to and inside the housing ...

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Abstract

The present invention is directed to a wind turbine including a tower (1) and a tower deflection detection device. The tower deflection detection device comprises a transmitter (2) configured to transmit a first electromagnetic signal (100); a leaky feeder (3) having a plurality of apertures; a receiver (4) connected to the first leaky feeder (3) and configured to receive a second electromagnetic signal (200) from the first leaky feeder (3), the second electromagnetic signal (200) is a signal reflected from a reflection portion of the tower (1), when the first electromagnetic signal (100) impinges the reflection portion of the tower (1), and entered into the leaky feeder (3) through at least one of the plurality of apertures; and a processing unit connected to the receiver (4) and configured to receive the second electromagnetic signal (200) from the receiver (4), to analyse the received second electromagnetic signal (200) and to determine a deflection amount of the tower (1) based on the analysed second electromagnetic signal (200).

Description

technical field [0001] The invention relates to the technical field of wind turbines. In particular, the invention relates to a wind turbine comprising a tower and a tower deflection detection device. Background technique [0002] In the technical field defined above, EP 2 864 632 A1 discloses a radar system for measuring the position of a blade based on the Doppler effect. Some other efforts exist to detect tower deflection using acceleration sensors or other position sensors in the nacelle and / or tower. And, via laser measurements from outside, yet other efforts have been made. However, these measurements are sometimes burdensome and imprecise. Contents of the invention [0003] It is an object of the present invention to provide a wind turbine with a tower deflection detection device and a method of detecting the deflection of a tower of a wind turbine, wherein the accuracy can be improved by simple measures. This object is achieved by the subject-matter according t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D13/20F03D17/00
CPCF03D17/00F05B2260/80F03D13/20H01Q13/203Y02E10/72Y02E10/728H04B5/28F05B2260/83G01B15/06
Inventor E·纳格尔J·纽文豪生
Owner SIEMENS GAMESA RENEWABLE ENERGY AS
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