Abstract
Abstract Wind power is one of the prevailing types of renewable energy, but the reliability of its components is always challenged by the severe service environment, especially on the offshore. Hence, case studies on failed components deserve to be publicly reported for experience sharing and failure prevention. In this event, severe degradations like combustion and abnormal electrical resistance rise were frequently detected on a large number of windings and lead bars within the transformers in 4 MW offshore wind turbines. To solve this problem, a series of characterization methods were utilized to investigate the assembly structure, matrix materials and macro/microscopic morphologies of the failed transformers. Temperature simulation experiment was also carried out to evaluate the normal operating conditions. The analysis results showed that risky factors induced from inappropriate installation, unreasonable design, unqualified fabrication and improper maintenance were the root causes for the failure. Finally, relevant mechanisms were discussed in detail and specific countermeasures were put forward.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
