dcterms:abstract
  • As the reliability of a tripod support structure with suction buckets should be evaluated by avoiding resonance, an efficient method to predict natural frequency, which is also known as an effective tool to show the existence of damage in wind turbines, is suggested. The whole structure is modeled by beam elements, while a nacelle with blades is considered as a mass. A boundary condition of the suction buckets is described by a serial combination of stiffness elements for soil and a connecting part of a suction bucket. Then, an effective structural health monitoring (SHM) system is developed to validate the proposed modelling method. Accelerometers, strain gauge and various sensors for measurement of sea environment are installed in proper locations, and measured natural frequency is extracted by measured bending strain. It is validated that the measured natural frequency is the almost the same as the predicted one, with an error rate below 1%, and the natural frequency has sufficient margin to major excitation frequencies such as 1P and 3P. Also, it is observed that the measured natural frequency is constant for 3 months (xsd:string)
dcterms:accessRights
dcterms:alternative
  • Prediction of natural frequency of an offshore wind turbine with a support structure with suction buckets and observation by structural health monitoring system (xsd:string)
nlon:antecedentSource
  • born digital (xsd:string)
nlon:audienceNote
  • 일반이용자 (xsd:string)
nlon:bibliography
  • 참고문헌: p. 37-38 (xsd:string)
dc:creator
  • 김봉기 (xsd:string)
  • 김상렬 (xsd:string)
  • 마평식 (xsd:string)
dcterms:creator
nlon:datePublished
  • 2021-01-26T08:53:25 (xsd:dateTime)
dcterms:description
  • 한국연구재단 제공 KCI 등재(후보)학술지임 (xsd:string)
bibo:doi
  • https://www.doi.org/10.33519/kwea.2019.10.2.004 (xsd:string)
bibframe:extent
  • 8 p (xsd:string)
dc:format
  • application/pdf (xsd:string)
nlon:genre
  • 학술논문 (xsd:string)
nlon:holdingInstitution
  • 국립중앙도서관 (xsd:string)
dcterms:identifier
  • http://www.kwea.or.kr/journal/publishedarticles.php?code=KWEA_journal_list&mode=vie&number=177&vol=10&num=2&keyfield=pressdate&key=20190630 (xsd:string)
dcterms:isPartOf
nlon:keyword
  • 해상 풍력발전기, 석션 버켓, 고유진동수, 구조물 건전성 감시, Offshore Wind Turbine, Suction Bucket, Natural Frequency, Structural Health Monitoring (xsd:string)
rdfs:label
  • 석션 버켓 지지구조 해상 풍력발전기의 고유진동수 예측과 구조물 건전성 감시 시스템을 이용한 고유진동수 관찰 (xsd:string)
nlon:languageNote
  • 영어 요약 있음 (xsd:string)
nlon:medium
  • 전자자료(Application) (xsd:string)
nlon:newsPosition
  • p. 31-38 (xsd:string)
nlon:publicationPlace
  • 한국 (xsd:string)
nlon:relatedParts
  • 2019년 6월 (xsd:string)
  • 제10권 제2호 (xsd:string)
nlon:restriction
  • 국립중앙도서관 공개 (xsd:string)
dcterms:title
  • 석션 버켓 지지구조 해상 풍력발전기의 고유진동수 예측과 구조물 건전성 감시 시스템을 이용한 고유진동수 관찰 (xsd:string)
nlon:titleOfHostItem
  • Journal of wind energy (xsd:string)
  • 풍력에너지저널 (xsd:string)
rdf:type
nlon:typeOfResource