风电机组叶片开裂缺陷在线监测终端研制

Development of an Online Monitoring Terminal for Crack Defect of Wind Turbine Blades

针对传统的风机叶片开裂缺陷检测方法无法实现风机叶片的非接触实时监测等问题,在分析风力发电机叶片开裂气动噪声信号特征的基础上,设计了一种风电机组叶片开裂缺陷智能终端,研制的智能终端包括信号传感、信号处理与传输和无线通信三个部分。测试结果表明,研制的智能终端能够实时获取风机叶片运行气动噪声和初步诊断,为风机叶片开裂缺陷的及时诊断提供了有效的检测工具。

Considering that traditional methods for detecting crack defects of wind turbine blades cannot realize non-contact real-time monitoring of blades,on the basis of an analysis of the characteristics of aerodynamic noise signal of wind turbine blade cracks,this paper introduced the design of an intelligent terminal for wind turbine blade cracks. The developed intelligent terminal included three parts：signal sensing,signal processing and transmitting,and wireless communication. Test results indicated that the developed intelligent terminal could obtain aerodynamic noise of blade operation and make an initial diagnosis on the real-time basis,thus providing an effective detection tool for timely diagnosis of cracks of wind turbine blades.