신재생에너지 (New & Renewable Energy)

  • 제17권4호
  • /
  • Pages.1-8
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  • 2021
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  • 1738-3935(pISSN)
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  • 2713-9999(eISSN)
한국신·재생에너지학회 (Korean Society for New and Renewable Energy)
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재해석자료를 이용한 한반도 해상의 기준풍속 추정

Estimation of Reference Wind Speeds in Offshore of the Korean Peninsula Using Reanalysis Data Sets

  • Kim, Hyun-Goo (New & Renewable Energy Resource Map Laboratory, Korea Institute of Energy Research) ;
  • Kim, Boyoung (New & Renewable Energy Resource Map Laboratory, Korea Institute of Energy Research) ;
  • Kang, Yong-Heack (New & Renewable Energy Resource Map Laboratory, Korea Institute of Energy Research) ;
  • Ha, Young-Cheol (School of Architecture, Kumoh National Institute of Technology)
  • 투고 : 2021.08.20
  • 심사 : 2021.12.05
  • 발행 : 2021.12.25
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초록

To determine the wind turbine class in the offshore of the Korean Peninsula, the reference wind speed for a 50-y return period at the hub height of a wind turbine was estimated using the reanalysis data sets. The most recent reanalysis data, ERA5, showed the highest correlation coefficient (R) of 0.82 with the wind speed measured by the Southwest offshore meteorological tower. However, most of the reanaysis data sets except CFSR underestimated the annual maximum wind speed. The gust factor of converting the 1 h-average into the 10 min-average wind speed was 1.03, which is the same as the WMO reference, using several meteorological towers and lidar measurements. Because the period, frequency, and path of typhoons invading the Korean Peninsula has been changing owing to the climate effect, significant differences occurred in the estimation of the extreme wind speed. Depending on the past data period and length, the extreme wind speed differed by more than 30% and the extreme wind speed decreased as the data period became longer. Finally, a reference wind speed map around the Korean Peninsula was drawn using the data of the last 10 years at the general hub-height of 100 m above the sea level.

키워드

과제정보

본 연구는 2021년도 산업통상자원부 및 산업기술평가관리원(KEIT) 표준화기술개발사업 연구비 지원을 받은 결과물입니다(K_G012001622501).

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