Method and system for lowering offshore wind generating set load

A technology for wind power generators and generators, applied in the field of control, can solve problems that affect the life and safety of the unit, increase fatigue and wear of the tower and foundation, and achieve the effects of prolonging the life of the unit, reducing the impact, and increasing aerodynamic damping

Inactive Publication Date: 2013-03-13
SINOVEL WIND GRP
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Problems solved by technology

Long-term operation will increase the fatigue wear of the to

Method used

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  • Method and system for lowering offshore wind generating set load
  • Method and system for lowering offshore wind generating set load
  • Method and system for lowering offshore wind generating set load

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Embodiment Construction

[0026] 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 creative efforts fall within the protection scope of the present invention.

[0027] The technical scheme of the invention can be applied to reduce the load of offshore wind power generators. More specifically, the present invention is applied to reduce the load of the offshore wind power generating set in the non-generating state. The operating states of the wind turbine generally include: waiting for wind state, fault st...

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Abstract

The invention provides a method and a system for lowering the offshore wind generating set load. The method comprises the following steps of: measuring a wind speed value; according to the wind speed value, determining a revolving speed set value; measuring the revolving speed value of a generator; according to the revolving speed set value and the revolving speed value of the generator, determining a revolving speed deviation; and according to the revolving speed deviation, determining a first variable pitch rate set value so as to bring convenience for a variable pitch execution system to reduce the variable pitch angle of a wind wheel to ensure that the revolving speed of the wind wheel of which the variable pitch angle is reduced is stabilized at a rate value determined by the first variable pitch rate set value. According to the invention, the load of an offshore wind generating set under the non-generating state can be lowered, and the service life of the offshore wind generating set is prolonged.

Description

technical field [0001] The invention relates to control technology, in particular to a method and system for reducing the load of an offshore wind power generating set. Background technique [0002] Due to the different marine environments in which offshore wind turbines are located, they are subjected to different loads. In addition to the load sources of land wind turbines, such as inertial, gravity loads, aerodynamic loads, and operating loads, the loads of offshore wind turbines also include water flow loads, sea ice loads, and ship impact loads, of which Current loads include: ocean current loads, wave loads and tidal loads. Therefore, the load of offshore wind turbines has great uncertainty. Random nonlinear wind loads and wave loads will pose great challenges to the safety control of offshore wind turbines. The operating states of offshore wind turbines include: wind-waiting state, fault state, power generation operating state, low temperature cut-out and strong wi...

Claims

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Application Information

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IPC IPC(8): F03D7/00
CPCY02E10/723Y02E10/72
Inventor 杨明明何荣光蔡旋陈曦蒋伟
Owner SINOVEL WIND GRP
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