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Monitoring method and device for wind turbine nacelle vibration

A technology for wind turbines and generators, which is applied in the monitoring of wind turbines, control of wind turbines, wind turbines, etc., can solve problems such as failure to monitor the vibration of the engine room and the inconvenience of the protection of the engine room of the wind turbine.

Active Publication Date: 2019-07-23
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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Problems solved by technology

[0004] The embodiment of the present invention provides a method that solves the technical problem that there is no method in the prior art to monitor the overrun vibration of the nacelle caused by the speed-torque fluctuation, which makes it inconvenient to protect the nacelle of the wind power generating set

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  • Monitoring method and device for wind turbine nacelle vibration
  • Monitoring method and device for wind turbine nacelle vibration
  • Monitoring method and device for wind turbine nacelle vibration

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] It should be understood that the term "and / or" used herein is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and / or B, which may mean that A exists alone, and A and B exist simultaneously. B, there are three situations of B alone. In addition, the chara...

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Abstract

Embodiments of the present invention provide a method and device for monitoring the vibration of a wind turbine nacelle. The method includes: collecting the acceleration signal of the wind turbine nacelle, the torque signal and the rotational speed signal of the generator in the current time period; The natural frequency of the cabin; calculate the fluctuation frequency of the current torque according to the torque signal of the generator in the current time period; calculate the fluctuation frequency of the current speed according to the speed signal of the generator in the current time period; if the fluctuation frequency of the current torque and the current speed If the absolute value of the difference between the fluctuation frequency and the natural frequency of the nacelle is less than the preset trigger resonance threshold, it is determined that torque resonance occurs, which realizes the monitoring of torque resonance and realizes the detection of The monitoring of vibration exceeding the limit of the nacelle is convenient for the protection of the nacelle of the wind turbine.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of wind power generation, and in particular to a method and device for monitoring vibration of a nacelle of a wind power generating set. Background technique [0002] During the power generation process of the wind turbine, the nacelle vibration will be caused by various reasons. Due to wind conditions or self-control reasons, wind turbines sometimes cause speed-torque fluctuations. When the frequency of speed-torque fluctuations is close to the natural frequency of the wind turbine nacelle, it is easy to cause the vibration of the nacelle to exceed the limit. When the vibration of the nacelle exceeds the limit, it will cause harm to the wind turbine. [0003] In the prior art, there is no method for monitoring the excessive vibration of the nacelle caused by the speed-torque fluctuation, so when the vibration of the nacelle caused by the speed-torque fluctuation exceeds the limit, it ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D17/00F03D7/00
CPCF03D7/00F05B2270/1016F05B2270/304F05B2270/328F05B2270/334Y02E10/72
Inventor 于迟
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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