Feasibility of in situ blade deflection monitoring of a wind turbine using a laser displacement sensor within the tower

摘要: With the potential of commercially viable global wind power, use energy is expected to rise further, along with related problems. One issue collision turbine blades tower during operation. Structural health monitoring required improve operational safety, minimize risk sudden failure or total breakdown, ensure reliable power generation, and reduce life cycle costs. To this end, large numbers sensors such as fiber Bragg grating piezoelectric devices have been attached structure, which uneconomical impractical for turbines. This study proposes a single laser displacement sensor (LDS) system in all rotating can be cost-effectively evaluated. In contrast approach blade installation, LDS installed enable noncontact monitoring. The concept actuator their delivery device will various approaches structural Blade bolt loosening cause deflection an affected blade. Similarly, nacelle tilt mass loss damage result changes deflection, but proposed detect problems early on.