基于CLD模型的风电叶片延寿区间估计  

ESTIMATION OF LIFE EXTENSION SPAN OF WIND TURBINE BLADES BASED ON CLD MODEL

作　　者：曾世龙 马强[1] 白学宗[1] 马辉东 安宗文[1] Zeng Shilong;Ma Qiang;Bai Xuezong;Ma Huidong;An Zongwen(School of Mechatronics Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Gansu province Special Equipment Inspection and Testing Institute,Lanzhou 730050,China)

机构地区：[1]兰州理工大学机电工程学院,兰州730050 [2]甘肃省特种设备检验检测研究院,兰州730050

出　　处：《太阳能学报》2024年第3期41-45,共5页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51265025);市场监督管理总局科技计划资助(2022MK125);甘肃省高等学校产业支撑引导项目(2020C-12);甘肃省高等学校创新基金项目(2022A-018)。

摘　　要：为确定在役风电叶片到达设计寿命后能否延寿继续使用,提出一种基于恒幅寿命图模型的延寿区间计算方法。首先,分析叶片在运行工况下的载荷状况,采用应力-寿命(S-N)曲线分析弯矩作用下的疲劳寿命,进而定义弯矩-寿命(M-N)曲线。根据M-N曲线和CLD模型的映射关系建立延寿估计的CLD模型。基于延寿估计的CLD模型计算待退役叶片已累积的疲劳损伤,并从疲劳损伤估计可持续延寿的时间。最后,以某型叶片为例应用该方法进行延寿区间估计。In order to determine whether wind turbine blades should be decommissioned,a calculation method based on the CLD model is proposed to estimate their life extension span.Firstly,the load conditions of blades under operating conditions are analyzed.The fatigue life under bending moment is analyzed using the S-N curve,and then the bending moment life(M-N)curve is defined.The CLD model of life extension estimation is established according to the mapping relationship between M-N curve and CLD model.The CLD model based on life extension estimation calculates the accumulated fatigue damage of the blades to be decommissioned.The sustainable life extension time is estimated based on the accumulated fatigue damage.Finally,the life extension span of a certain type of blade is estimated by using this method.

关 键 词：风电叶片 疲劳损伤 延寿 CLD 区间 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]