Wind turbine generator tower frame vibration control method and system

A technology of wind turbines and towers, which is applied in the control of wind turbines, monitoring of wind turbines, and wind power generation. It can solve problems such as inaccurate measurement accuracy and poor control of tower vibrations.

Active Publication Date: 2019-05-28
北方国际合作股份有限公司
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Problems solved by technology

[0006] The present invention overcomes the existing problem of inaccurate measurement accuracy caused by only measuring the v

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  • Wind turbine generator tower frame vibration control method and system
  • Wind turbine generator tower frame vibration control method and system
  • Wind turbine generator tower frame vibration control method and system

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Embodiment Construction

[0050] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0051] A method for controlling vibration of a wind turbine tower, wherein the unit of vibration acceleration is m / s 2 , the unit of velocity is m / s, which can be used to measure the vibration amplitude and other information of the position of the nacelle on the top of the tower. When the wind turbine is in a static state, its vibration acceleration and vibration velocity are approximately 0.

[0052] Vibration control method of the present invention specifically comprises the steps:

[0053] 1) Use several acceleration sensors installed at the connection position between the top of the tower and the nacelle to simultaneously measure the vibration acceleration in the axial direction and radial direction of the nacelle on the top of the wind turbine tower. In the circumferential direction of the outer peripheral surface of the tower; then clear the data...

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Abstract

The invention relates to a wind turbine generator tower frame vibration control method and a wind turbine generator tower frame vibration control system. The invention aims to solve the technical problems that the measurement is inaccurate and the vibration control effect of a tower frame is not good because of the vibration acceleration in a single direction of a cabin at the top of the existingmeasurement tower. According to the wind turbine generator tower frame vibration control method and system, the effects of measuring accurately and reducing the first order and/or second order inherent frequency amplitude of the cabin at the top of the tower in the direction of the resultant force thereof are achieved by performing vector resultant on the acceleration or the speed in any directionin a horizontal plane at the top of the tower, or measuring and calculating the vibration acceleration in the radius direction of a spherical surface which takes the intersection point of the horizontal plane at the top of the tower and the central axis of the tower frame as the centre of the sphere, performing first order and second order filtering on a resultant acceleration or resultant speedby utilizing a band pass filter to obtain a variable pitch control vibration input value for controlling the variable pitch rate based on the vibration acceleration of the top of the tower of a wind turbine, performing vector addition on the variable pitch control vibration input value and the variable pitch control vibration input value based on the rotating speed of a wind turbine generator, andfinally controlling the pitch rate of the wind turbine by utilizing the vibration input values of the two aspects above.

Description

technical field [0001] The present invention relates to a method and system for controlling the vibration of a tower of a wind turbine, in particular to a method and a system for controlling the vibration of a tower of a horizontal axis wind turbine. Background technique [0002] Wind power generation is a green, clean and environmentally friendly energy utilization method. By installing wind power generation devices in areas with strong natural winds on the sea and on land, the natural energy in the area can be fully utilized and converted into electrical energy, thereby creating huge economic benefit. [0003] However, as the diameter of the rotor of the current wind turbine is getting larger and the height of the tower is getting higher and higher, the probability of unit resonance is also increasing. The main reasons for resonance are turbulence, tower shadow, wind Changes in shear and wind turbine loads cause the tower and nacelle of the wind turbine to vibrate. On the...

Claims

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Application Information

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IPC IPC(8): F03D7/00F03D17/00F03D13/20
CPCF03D7/0224F03D7/0296F03D7/043F03D17/00G06F17/11Y02E10/72
Inventor 柳盼
Owner 北方国际合作股份有限公司
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