Wind turbine generator system and calculation method and equipment for fatigue damage of wind turbine generator system
A technology for wind turbines and fatigue damage, which is applied in the control of wind turbines, monitoring of wind turbines, wind turbines, etc., can solve the problems of lack of bending moment, inability to calculate fatigue damage, and low accuracy of blade fatigue damage.
Active Publication Date: 2021-07-09
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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Problems solved by technology
[0003] At present, due to the different loads required to calculate the fatigue damage of each component, it is impossible to directly calculate the fatigue damage of each large component except the blade based on the measured blade root load, and because the sensor can only measure two Bending moment in one direction so that the bending moment in the third direction is missing, so the accuracy of the calculated blade fatigue damage is low
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[0036] Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like numerals refer to like parts throughout. The embodiments are described below in order to explain the present disclosure by referring to the figures.
[0037] Since the development of the wind power industry, wind turbines have spread all over the world, and the new installed capacity will decrease year by year. The number of wind turbines that have been put into operation is huge, and most of them have been in operation for several years or even more than ten years. Tapping the potential of these wind turbines in operation may become the focus of future research. If the wind conditions and the distribution of fatigue damage (referred to as damage) of the wind turbine during operation can be obtained for a period of time, scheduling can be made accordingly to optimize the damage distribution within the remaining life ...
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The invention provides a wind turbine generator system and a calculation method and equipment for fatigue damage of the wind turbine generator system. The method comprises the steps that a blade root load is calculated according to a load sensed by a blade root sensor of the wind turbine generator system, wherein the sensed load comprises x-axis bending moment and y-axis bending moment; a hub center load is calculated according to the blade root load; a plane stress is calculated according to the hub center load; And the fatigue damage is calculated according to the plane stress. According to the wind turbine generator system and the calculation method and equipment for the fatigue damage of the wind turbine generator system, the load sensed by the sensor can be converted to meet the calculation requirement of the plane stress, the plane stress is calculated based on the converted load, and the fatigue damage is calculated based on the calculated plane stress so that the fatigue damage can be obtained by effectively utilizing the load sensed by the sensor.
Description
technical field [0001] The present disclosure relates to wind power generation technology, in particular, to a calculation method and equipment for a wind power generating set and its fatigue damage. Background technique [0002] At present, the on-grid electricity price of wind turbines (referred to as wind turbines for short) is in a downward trend. In order to improve the market competitiveness of wind turbines, reduce the cost of wind turbines, tap the potential of wind farms and increase power generation, it is necessary to accurately understand the fatigue damage caused by loads to wind turbines. In order to ensure the safety of wind turbines, reasonably determine the excess capacity and formulate effective over-generation plans; smart wind turbines and smart wind farms are the current development trend of the wind power industry, and effective control of wind turbine operation and real-time early warning can ensure the safety of wind turbines , Reduce unnecessary oper...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F03D17/00F03D1/06F03D7/02G06F30/20G06F119/04
CPCF03D17/00F03D1/0691F03D1/0675F03D7/02F05B2270/328Y02E10/72
Inventor 鲁欢杜翔宇杨剑秋
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD