摘要
针对风电机组偏航制动缸疲劳开裂问题,基于湖南某风场SCADA实测运行监测数据,分析24台风电机组全年偏航运行与偏航制动次数关系,运用非参数估计法,获得偏航运行周期;基于ABAQUS建立偏航制动系统有限元模型,制定偏航制动缸运行载荷谱;根据GL规范,开展偏航制动缸强度校核;基于nCode Design-Life开展偏航制动缸疲劳寿命计算,分析偏航制动缸相邻两缸壁厚度对疲劳寿命的影响。结果表明:缸壁厚度对其疲劳寿命具有显著性影响,通过优化缸壁厚度可延长制动缸的疲劳寿命。
Aiming at the fatigue cracking of yaw brake cylinder of wind turbine,the relationship between the yaw operation and the yaw braking times of 24 wind turbines are analyzed based on the operational monitoring data of a Hunan wind farm SCADA(supervisory control and data acquisition).The yaw operation cycle is obtained by using the non-parametric estimation method.The finite element model for yaw brake system is established via ABAQUS.The load spectrum of yaw brake cylinder is formulated.According to the GL specification,the brake cylinder is checked.Based on the nCode Design-Life,the fatigue life analysis is carried out,and the influence of the two adjacent cylinder walls thickness on the fatigue life is studied.The results show that the thickness of two adjacent cylinder walls has a significant influence on the fatigue life.The fatigue life of yaw brake cylinder can be prolonged by optimizing the cylinder walls thickness.
作者
杨书仪
赵康康
覃凌云
Yang Shuyi;Zhao Kangkang;Qin Lingyun(School of Mechanical Engineering,Hunan University of Science and Technology,Hu'nan Xiangtan 411201,China)
出处
《机械科学与技术》
CSCD
北大核心
2020年第2期221-227,共7页
Mechanical Science and Technology for Aerospace Engineering
基金
国家重点研发计划项目(2016YFF0203400)
湖南省教育厅科学研究重点项目(16A074)资助.
关键词
风电机组
SCADA
偏航制动缸
载荷谱
疲劳寿命
wind turbine
supervisory control and data acquisition(SCADA)
yaw brake cylinder
load spectrum
fatigue life
