Abstract
Wind power has expanded significantly over the past years, although reliability of wind turbine systems, especially of offshore wind turbines, has been many times unsatisfactory in the past. Wind turbine failures are equivalent to crucial financial losses. Therefore, creating and applying strategies that improve the reliability of their components is important for a successful implementation of such systems. Structural health monitoring (SHM) addresses these problems through the monitoring of parameters indicative of the state of the structure examined. Condition monitoring (CM), on the other hand, can be seen as a specialized area of the SHM community that aims at damage detection of, particularly, rotating machinery. The paper is divided into two parts: in the first part, advanced signal processing and machine learning methods are discussed for SHM and CM on wind turbine gearbox and blade damage detection examples. In the second part, an initial exploration of supervisor control and data acquisition systems data of an offshore wind farm is presented, and data-driven approaches are proposed for detecting abnormal behaviour of wind turbines. It is shown that the advanced signal processing methods discussed are effective and that it is important to adopt these SHM strategies in the wind energy sector.
Highlights
Aspects of structural health and condition monitoring of offshore wind turbinesWind power has expanded significantly over the past years, reliability of wind turbine systems, especially of offshore wind turbines, has been many times unsatisfactory in the past
Offshore wind farms are remotely located and operate under challenging conditions, much worse than the onshore wind farms
Failure of their components has been frequently observed in the past. This fact could inhibit their establishment as an attractive alternative option for power generation. It is for this reason that the development of a reliable structural health monitoring (SHM) and condition monitoring (CM) strategy is necessary and why current research is focusing on this aim
Summary
Wind power has expanded significantly over the past years, reliability of wind turbine systems, especially of offshore wind turbines, has been many times unsatisfactory in the past. The paper is divided into two parts: in the first part, advanced signal processing and machine learning methods are discussed for SHM and CM on wind turbine gearbox and blade damage detection examples. An initial exploration of supervisor control and data acquisition systems data of an offshore wind farm is presented, and data-driven approaches are proposed for detecting abnormal behaviour of wind turbines. It is shown that the advanced signal processing methods discussed are effective and that it is important to adopt these SHM strategies in the wind energy sector.
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