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Damping adjusting system for flexible wind turbine generator system tower and wind turbine generator system

A technology of damping adjustment and wind turbines, which is applied to the installation/supporting of wind turbines, wind power generation, towers, etc., and can solve problems such as difficult installation, reduced service life of towers, and increased weight of towers and nacelles

Pending Publication Date: 2020-10-27
LONGYUAN BEIJING WIND POWER ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, a damping adjustment device is usually placed inside the tower or in the nacelle to increase the damping of the tower, and the device absorbs the energy generated in the vibration of the tower and the nacelle, but this method will increase the weight of the tower and the nacelle itself, causing Additional loads, reducing the service life of the tower
At the same time, the structure of the tower or the interior of the cabin needs to be modified, and the installation is difficult

Method used

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  • Damping adjusting system for flexible wind turbine generator system tower and wind turbine generator system
  • Damping adjusting system for flexible wind turbine generator system tower and wind turbine generator system
  • Damping adjusting system for flexible wind turbine generator system tower and wind turbine generator system

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Experimental program
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Effect test

Embodiment 1

[0055] Such as figure 1 , figure 2 As shown, the present invention adopts a cable-stayed land flexible wind turbine tower and its damping adjustment system, including a wind turbine tower 1, cable stays 2, cable fixing devices 3 on the tower, and cable fixing devices at the bottom of the tower. A device 4, a damping adjustment device 5 and a sensor 6 connected thereto, a control module 7 and an anchoring device 8. The stay cable fixing device 3 on the tower is connected with the wind turbine tower 1 through high-strength bolts, and a plurality of stay cables 2 are arranged at a symmetrical angle to the center line of the wind turbine tower 1. Each stay cable 2 and the tower bottom stay cable The fixing device 4, the damping adjusting device 5 and the connected sensor 6, the control module 7 and the anchoring device 8 constitute a basic unit of the damping adjusting system, which is connected to a specific position of the cable fixing device 3 on the tower. Wherein, one end ...

Embodiment 2

[0070] The difference between this embodiment and Embodiment 1 is that in this embodiment, the sensor is a displacement sensor, which is arranged on the end face of the damper bracket, and the position signal is used as the damping adjustment control signal in the control module.

[0071] Such as Figure 10 As shown, the tower bottom cable fixing device 4 in Embodiment 2 of the present invention includes a rainproof cover 41, a cable sleeve 42, a shock absorbing ring 43, a cable clamp 44, an anchor cup 45, a sealing cover 46, a lock nut 47, and an anchor Tool 48, protective cover 49. The cable sleeve 42 is provided with a damping ring 43 for reducing the vibration of the cable, a cable clamp 44 and an anchor cup 45 for fixing the internal steel wire of the cable, and the cable stay 2 passes through the rain cover 41, The shock absorbing ring 43, the cable clamp 44, the seal cover 46 and the annular hole of the anchor cup 45 are axially fixed by the lock nut 47, and the anchor...

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Abstract

The invention discloses a damping adjusting system for a flexible wind turbine generator system tower and a wind turbine generator system, and belongs to the field of wind turbine generator systems. The damping adjusting system involves an on-tower inhaul cable fixing device, a plurality of damping adjusting units and a control module; the damping adjusting units comprise stay cables, tower bottominhaul cable fixing devices, damping adjusting devices and anchoring devices which are connected in sequence, wherein the stay cables comprise protective sleeves and stay cable bodies arranged in theprotective sleeves; the on-tower inhaul cable fixing device comprises an inhaul cable fixing shell ring and a plurality of inhaul cable anchoring structures evenly arranged on the inhaul cable fixingshell ring in the circumferential direction, and the two ends of the stay cables are connected with the inhaul cable anchoring structures and the tower bottom inhaul cable fixing devices correspondingly; and the plurality of damping adjusting devices are connected with the control module and are jointly controlled through the control module. According to the damping adjusting system for the flexible wind turbine generator system tower and the wind turbine generator system, by means of the external stay cables, stay cable force or displacement signals are collected through sensors, so that thevibration amplitude of the whole land wind turbine generator system is remarkably reduced, the tower load is reduced, the weight of the tower is reduced, and the reliability of the tower is improved.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a damping adjustment system for a flexible wind turbine tower and a wind turbine. Background technique [0002] The tower is an important part of the wind turbine, which is used to support the nacelle, impeller and other components of the wind turbine. Since the wind turbine is subjected to random wind loads during operation, the tower itself will generate a large vibration amplitude, and the bottom of the tower will also bear a large bending moment. As the capacity of onshore wind turbines continues to increase, the weight of the unit, the diameter of the impeller, and the height of the tower have also doubled, especially in areas with low wind speeds. In order to obtain better wind resources, the height or super height of 110m-140m is usually used There are great challenges in the safe operation of towers and units. [0003] In order to improve the reliability of the towe...

Claims

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Application Information

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IPC IPC(8): E04B1/98E04H12/20F03D13/20
CPCE04B1/98E04H12/20F03D13/20Y02E10/72Y02E10/728
Inventor 郭日阳任淮辉康凯夏晖张博苏剑涛胡鹏
Owner LONGYUAN BEIJING WIND POWER ENG TECH
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