Experimental activities on wind turbine models allow to speed up their design as well as the development of robust and effective control algorithms. Intending to have large information on load distribution on the blades, this work presents an experimental setup of a model wind turbine blade instrumented with two different types of optical fiber sensors (FOS). The first one is a traditional chain of Fiber Bragg Grating sensors, able to measure a large number of strain values; the second is based on Optical Backscatter Reflectometry (OBR), able to provide a continuous strain measurement. The experimental setup is calibrated to estimate load distribution along the blade and the two technologies are compared. The results of the experimental campaign suggest that optical fiber sensors could represent an interesting solution for real-time continuous load monitoring purposes.

风力涡轮机模型的实验活动可以加快其设计以及稳健有效控制算法的开发。为了获得有关叶片负载分布的大量信息，这项工作提出了一个模型风力涡轮机叶片的实验装置，该叶片配备了两种不同类型的光纤传感器 (FOS)。第一个是传统的光纤布拉格光栅传感器链，能够测量大量应变值；第二种是基于光学背向散射反射计 (OBR)，能够提供连续应变测量。校准实验装置以估计沿叶片的载荷分布，并对两种技术进行比较。