Journal of Wind Energy (풍력에너지저널)

Korea Wind Energy Association (한국풍력에너지학회)
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Verification of Tripod Suction Pile Applicability Through Dynamic Characteristic Analysis of Offshore Wind Turbine at Each Installation Stage

해상풍력 구조물 설치 단계별 현장 동특성 분석을 통한 트라이포드 석션기초 적용성 검증

  • 유무성 (한전전력연구원, 신재생에너지연구소) ;
  • 이준신 (한전전력연구원, 신재생에너지연구소) ;
  • 곽대진 (에드벡트) ;
  • 서윤호 (한국기계연구원, 풍력연구실)
  • Received : 2019.05.29
  • Accepted : 2019.08.20
  • Published : 2019.09.30
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Abstract

This paper presents the installation procedure for an offshore wind turbine that has a suction bucket as its foundation. It also deals with the evaluation of dynamic characteristics at each installation stage by measuring the natural frequency of that system. Most previous studies mainly focused on the final natural frequency of the wind turbine after all support structures are installed. Consequently, those studies only checked whether this natural frequency could avoid resonance. However, this study checked the natural frequency of the system at each installation stage, which enabled the verification of governing factors of excitation such as waves, currents, wind and the system itself at each stage. From the field test data, it was found that the boat impact method gave a good excitation force, and this could be used for validating the integrity of offshore support structures such as oil and gas platforms. The test results also showed that the discrepancy in natural frequency between field data and analysis data is only 1.5%. This proves that the numerical analysis model is reliable and the wind turbine system was safely installed. This study will be helpful to design offshore wind turbine support structures and check the reliability of the numerical analysis model of offshore wind turbines.

Keywords

Acknowledgement

본 연구는 2014년도 산업통상자원부의 재원으로 한국에너지기술평가원(KETEP)의 지원을 받아 수행한 연구 과제입니다.(No. 20143010024330, 실규모 해상풍력 터빈을 탑재한 석션버켓 지지구조 실증연구)

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Cited by

  1. Closed Form Solutions for Predicting Lateral Response of Tripod Suction Pile for Offshore Wind Turbine Foundation vol.13, pp.23, 2019, https://doi.org/10.3390/en13236176