计算软件及风模型对机组疲劳载荷的影响

The Influence of Calculation Software and Wind Model on Fatigue Load of Wind Turbine

vonkaman和kaimal风模型下,使用Bladed4.2和Bladed4.8两个版本的计算软件对海上风电机组的载荷进行仿真计算,并对各个主要坐标系(叶根坐标系Root、轮毂坐标系N)下仿真计算得到的载荷结果进行对比分析。通过对不同机型进行计算来对结果进行印证。将影响其疲劳载荷的主要风速段进行仿真分析,对比得到vonkaman模型下的疲劳载荷总体小于kaimal方形风模型下的载荷;Bladed4.8版本与Bladed4.2版本相比较,其矩形风计算结果偏大,而方形风计算结果偏小,不同风模型以及不同软件版本得到了不同的疲劳载荷计算结果。

Under the two wind models of vonkaman and kaimal,using the calculation software of Bladed4.2and Bladed4.8 to simulate the load of offshore wind turbines,and to calculate the load of each main coordinate system(blade root coordinate system Root,wheel hub).The load results obtained by simulation calculation under the coordinate system N)are compared and analyzed.Confirm the results by calculating different models.The simulation analysis of the main wind speed section that affects its fatigue load shows that the fatigue load under the vonkaman model is generally smaller than the load under the kaimal square wind model;compared with the Bladed4.2 version,the calculation result of the rectangular wind is too large.The square wind calculation result is too small,and different wind models and different software versions get different fatigue load calculation results.