风电机组塔筒模态的环境脉动实测与数值模拟研究
Ambient vibration test and numerical simulation for modes of wind turbine towers
马人乐 1马跃强 1刘慧群 1陈俊岭1
作者信息
- 1. 同济大学,土木工程学院建筑工程系,上海,200092
- 折叠
摘要
基于随机振动及系统识别理论,对内蒙古京能乌兰伊利更风电场中三座风电机组塔筒进行了环境脉动实测,提出了"桨叶-轮毅-机舱-塔筒"耦合的整体建模的方法,数值模拟与实测结果表明,风电机组塔筒可以有效地避免共振,满足GL规范的设计要求;塔筒主要振动形式为侧向弯曲振动、前后弯曲振动和扭转振动;塔筒一阶平动阻尼比为1.78%左右,一阶扭转阻尼比为0.6%左右.采用整体建模方法建立的模型与实测结果有较好的一致性,可以指导风力发电塔系统的风致动力响应分析和振动控制分析.
Abstract
Based on the theory of random vibration and system identification, ambient vibration tests of three wind turbine towers in wind-power station of Inner Mongolia Wulanyiligeng were carried out. The method of coupling overall modeling of blade, hub, nacelle and tower was put forward, and the numerical stimulation and tests results showed that the wind turbine towers can effectively avoid resonance, and meet the standard design requirements of Germanischer Lloyd; the vibrational forms of the wind turbine towers mainly are lateral bending vibration, forth-and-back bending vibration and torsional vibration; the translational damping ratio in the first mode is about 1.75％, and the torsional damping ratio in the first mode about 0. 6％. The overall modeling showed excellent consistency with the test results, it could benefit wind-induced dynamic response analysis and vibration control analysis of wind turbine tower systems.
关键词
风电机组塔筒/环境脉动实测/模态分析/频率/阻尼比/整体建模Key words
wind turbine tower/ambient vibration test/modal analysis/frequency/damping ratio/overall modeling引用本文复制引用
出版年
2011
NETL
NSTL
维普
万方数据