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. The main goal of the recently started WindFarmSHMresearch project is the development, validation and optimization ofmonitoring strategies to be applied at the level of the wind farm. These strategies should be able to evaluate the structural condition of a set of windturbines and their consumed fatigue life using the response to operationloads. In this context, a quite extensive experimental campaign is beingperformed at the Tocha wind farm, an onshore wind farm located in Portugal,which includes the simultaneous instrumentation of several wind turbines,adopting strain gauges, clinometers and accelerometers distributed in thetower and blades. This paper introduces the Tocha wind farm, presents thedifferent layouts adopted in the instrumentation of the wind turbines andshows some initial results from the already fully instrumented wind turbine.At this preliminary stage, the capabilities of the very extensive monitoringlayout are demonstrated. The results presented in this paper demonstratethe ability of the different monitoring components to track the modalparameters of the system composed of a tower and rotor and to characterize theinternal loads at the tower base and blade roots.

New strategies for optimized structural monitoring of wind farms: experimental campaign