风电叶片结构健康监测系统

Health Monitoring System Applied to Blade Structure of Wind Turbine

中国目前大力发展清洁能源技术,以风电为代表的新能源产业在中国已经有比较大规模的应用。在运行过程中,风电叶片表面出现了撕裂、扭转、螺丝松动等情况;出现上述情况的部位主要集中在叶片根部、叶片空心材料与实心材料交接处。通过对风电叶片运行状态、叶片材料、制作工艺的研究,出现这样的情况主要是运行过程中震动量及应变力起了较大的影响。因此,通过安装在叶片内部的加速度传感器及应变片监测叶片的震动量信号及应变力,采集这两种类型的数据并通过一年以上运行数据的积累达到动态监测风电叶片结构监测健康系统的目的。未来希望通过分析能够了解叶片的全生命周期,做到提前预警。

China is currently developing clean energy technologies; the new energy industry represented by wind power has relatively large - Kale applications in China. During operation, tearing, twisting and loose screws, etc. may be found on the surfaces of the wind turbine blades and most failures are appeared at the blade roots or the junction between the blade hollow materials and solid materials. Through the study of the running status, blade materials and production process of the wind turbine blades, such failures are mainly caused by the vibration and strain force during operation. Therefore, there is the need to set acceleration sensors and strain gauges within the blades to monitor the vibration Signal and strain force inside the blade. With the acquisition of these two types of data as well as the service data accumulated over one year, it is available to achieve the health monitoring system for dynamic monitoring of the wind blade structure. We hope to understand the life cycle of the blade through the analysis for early warning in the future.