해상풍력-조류 하이브리드 발전시스템에 대한 구조 건전성 모니터링

Title
해상풍력-조류 하이브리드 발전시스템에 대한 구조 건전성 모니터링
Alternative Title
Structural Integrity Monitoring of Hybrid Offshore-Wind and Tidal-Current Turbines
Author(s)
김원술; 이진학; 박진순
KIOST Author(s)
Yi, Jin Hak(이진학)
Publication Year
2018-09-12
Abstract
As one of the efforts to harness energies from ocean, the hybrid offshore-wind and tidal-current turbines (HOTTs) have been studied for several years. In the HOTTs, the supporting structural parts including tower and foundation play an important role to secure the power generation facilities such as blades, hub and nacelle and to resist environmental loadings from wind, wave, and tidal current. The purpose of this study is to develop the structural integrity monitoring system and the damage detection method for the HOTT supporting structures through laboratory experiments. The laboratory experiments for the HOTT supporting structure have been performed using the scaled HOTT model in water flume. The dynamic characteristics of the HOTT model are estimated by least-squared frequency domain decomposition (LS-FDD) using the measured responses, and compared with those calculated by the commercial FEA software. The natural frequencies estimated by LS-FDD are very close to those of the FEA. To detect structural damages in the HOTT supporting structure, two different approaches are considered, (1) coherence-based method and (2) improved auto-regressive (AR) model based method. It is foundthat the improved AR model based method is superior to the coherence-based method and structural damage can be alarmed by the proposed improved AR model method.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23143
Bibliographic Citation
The Asian Wave and Tidal Energy Conference 2018 (AWTEC 2018), pp.1 - 8, 2018
Publisher
National Taiwan Ocean University
Type
Conference
Language
English
Publisher
National Taiwan Ocean University
Related Researcher
Research Interests

Ocean Energy-Tidal Current Energy Converter System,Infrastructure Management-Structural Health Monitoring,Offshore Wind,해양에너지-조류발전시스템,시설물 유지관리-구조건전성 평가,해상풍력

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse