장기계측에 의한 2MW급 풍력발전 타워구조물의 동특성 평가

DC Field Value Language
dc.contributor.author 김원술 -
dc.contributor.author 이진학 -
dc.contributor.author 이충기 -
dc.contributor.author 김석현 -
dc.date.accessioned 2020-07-15T15:53:07Z -
dc.date.available 2020-07-15T15:53:07Z -
dc.date.created 2020-02-11 -
dc.date.issued 2017-04-20 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/24051 -
dc.description.abstract This study investigates dynamic characteristics of a 2MW wind turbine structure by long-term response monitoring with accelerometers, tiltmeter and strain gauges. The object wind turbine structure is located in Jeju Island, Korea. The natural frequency and damping ratio were evaluated by least-square frequency domain decomposition and random decrement technique using acceleration response data. As a result, it was found that natural frequencies with 1st, 2nd and 3rd modes, and blade passing frequencies with 1P, 2P and 3P were clearly showed from power spectral densities of acceleration reponses. Furthermore, 1st model frequencies were almost constant with increase in standard deviations of acceleration responses. Another notable observation was that when standard deviations of acceleration responses were small, damping ratios showed to diverge. However, when standard deviations of acceleration responses had large values, damping ratios were converged to about 0.5%.al frequency and damping ratio were evaluated by least-square frequency domain decomposition and random decrement technique using acceleration response data. As a result, it was found that natural frequencies with 1st, 2nd and 3rd modes, and blade passing frequencies with 1P, 2P and 3P were clearly showed from power spectral densities of acceleration reponses. Furthermore, 1st model frequencies were almost constant with increase in standard deviations of acceleration responses. Another notable observation was that when standard deviations of acceleration responses were small, damping ratios showed to diverge. However, when standard deviations of acceleration responses had large values, damping ratios were converged to about 0.5%. -
dc.description.uri 2 -
dc.language Korean -
dc.publisher 한국복합신소재구조학회 -
dc.relation.isPartOf 한국복합신소재구조학회 2017년 학술발표회 -
dc.title 장기계측에 의한 2MW급 풍력발전 타워구조물의 동특성 평가 -
dc.title.alternative Evaluation of Dynamic Characteristics of 2MW Wind Turbine Tower Structure by Long-Term Measurement -
dc.type Conference -
dc.citation.conferencePlace KO -
dc.citation.endPage 2 -
dc.citation.startPage 1 -
dc.citation.title 한국복합신소재구조학회 2017년 학술발표회 -
dc.contributor.alternativeName 김원술 -
dc.contributor.alternativeName 이진학 -
dc.identifier.bibliographicCitation 한국복합신소재구조학회 2017년 학술발표회, pp.1 - 2 -
dc.description.journalClass 2 -
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Marine Industry Research Division > Ocean Space Development & Energy Research Department > 2. Conference Papers
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