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SWAN 모델을 이용한 서남해 해상풍력단지 해저케이블 경과지의 파랑 수치모의
유황진,김상호,권철휘,조광우,맹준호,Ryu, Hwang-Jin,Kim, Sang-Ho,Kwoun, Chul-Hui,Cho, Kwang-Woo,Maeng, Jun-Ho 해양환경안전학회 2015 해양환경안전학회지 Vol.21 No.5
우리나라 서남해역에서 추진될 해상풍력 발전 단지에서 생산된 전기와 기존의 전력망과의 계통연계를 위해서는 해저케이블 설치가 필수적인 요소이다. 특히 해저케이블 설치에 대한 경제성, 시공성 및 안정성 확보를 위해서는 해저케이블 경과지와 해저케이블 보호공법 설계가 이루어져야한다. 본 논문에서는 1979년부터 2002년까지 한국해양과학기술원에서 구축한 장기 파랑산출자료와 제3세대 파랑 모델인 SWAN(Simulating WAves Nearshore)을 이용하여 해상풍력단지가 조성될 해역에 대해 만조와 간조시 파랑시뮬레이션을 수행하여 해저케이블 경과지와 보호공법 설계를 위한 기초자료를 제공하고자 하였다. 연구결과, 서남해 해상풍력단지가 조성될 해역의 연평균 Hs는 1.03 m, Tz는 4.47s이고, 주파향은 북서(NW)와 남남서(SSW) 방향이다. NW에서 입사되는 조건(Hs: 7.0 m, Tp: 11.76s)에서 만조시 천해설계파랑 Hs의 분포는 약 4.0~5.0 m, 간조시에 약 2.0~3.0 m로 계산되었다. SSW에서 입사되는 조건(Hs: 5.84 m, Tp: 11.15s)에서 만조시 천해설계파랑 Hs의 분포는 약 3.5~4.5 m이고, 간조시에는 약 1.5~2.5 m로 계산되었다. 해저케이블 경과지 중 경도 UTM 249749~251349 구간 약 1.6 km에서는 NW로 입사되는 파랑의 영향이 크며, UTM 251549~267749 구간 약 16.2 km에서는 SSW로 입사되는 파랑의 영향이 지배적이다. 파랑집중 현상이 두드러지게 나타나는 해역은 위도와 하왕등도 사이 해역으로, 이 해역에서는 주변해역 보다 상대적으로 높은 파고를 나타내고 있다. Submarine cable installation is essentials for grid connection between existing power grid and newly produced electricity which will be from offshore wind farm in Southwest sea area of Korea. Especially, submarine cable route and protection method is designed in order to ensure the economical efficiency, workability and stability of submarine cable installation. On this paper, we will give the basic information about the submarine cable route and protection method of offshore wind farm which will be built in Southwest sea area of Korea. For this, we have a numerical simulation at high and low tide based on the third-generation wave model SWAN(Simulating WAves Nearshore) using the long term wave data from Korea Institute of Ocean Science and Technology(KIOST). The results of the study, year mean Hs is 1.03m, Tz is 4.47s and dominant wave direction is NW and SSW When the incident wave direction is NW(Hs: 7.0 m, Tp: 11.76s), the distribution of shallow water design wave height Hs was calculated about 4.0~5.0m at high tide and 2.0~3.0m at low tide. When the incident wave direction is SSW(Hs: 5.84 m, Tp: 11.15s), the distribution of shallow water design wave height Hs was calculated about 3.5~4.5m at high tide and 1.5~2.5m at low tide. The wave direction on a dominant influence in the section of longitude UTM 249749~251349(about 1.6 km) and UTM 251549~267749(about 16.2 km) in the submarine cable route are each NW and SSW. Prominently, wave focusing phenomenon appears between Wi-do and Hawangdeung-do, in this sea area is showing a relatively high wave hight than the surrounding sea areas.
유황진(Hwang-Jin Ryu),홍사영(Sa Young Hong),김병완(Byoung Wan Kim),남보우(Bo-Woo Nam) 대한조선학회 2011 대한조선학회 학술대회자료집 Vol.2011 No.6
This paper is investigated statistical properties of waves in the sea area of Uljin which is located in East Sea area in Korea. The wave data is measured from the AWAC(Acoustic Wave and Current Meter) which was installed in 16m water depth from November 2010 to March 2011. Wave data acquisition rate, Hmax, monthly mean Hs, Tz, Tp and wave direction are summarized. It was analyzed distribution of Hs and Tz, using the Hs-Tz scatter diagrams. Compare the wave spectrum using the measurement wave data with the wave spectrum was obtained by the varying γ of JONSWAP wave spectrum, it was approximated the wave spectrum shape at the Uljin sea area.
한국 연안의 파랑에너지 부존량 산출과 밀도 지도에 관한 연구
유황진(Hwang-Jin Ryu),홍기용(Keyyong-Hong),신승호(Seung-Ho Shin),김상호(Sang-Ho Kim),김영덕(Young-Duk Kim) 대한조선학회 2011 대한조선학회 학술대회자료집 Vol.2011 No.6
This paper is investigated to wave energy resources, available sea area for wave power generation and wave energy density map using the Korea sea area bathymetric data Consisting of 500m grid and long-term wave data from 1979 to 2005, which is provided by Korea Ocean Research & Development Institute(KORDI). Using this result, this paper provide Comprehensive and general information for the development, promote, establishment of action plan of Wave power generation.
울진해역의 Freak wave 특성과 스펙트럼 근사에 대한 연구
유황진(Hwang-Jin Ryu),홍사영(Sa Young Hong) 한국해양공학회 2012 韓國海洋工學會誌 Vol.26 No.2
This paper investigates the statistical properties of waves in the sea area of Uljin, which is located in the East Sea area of Korea. The wave data were measured using AWAC (Acoustic Wave and Current Meter), which was installed at a 16-m water depth from November 2010 to March 2011. The wave data acquisition rate, Hmax, monthly mean Hs, Tz, Tp, and wave direction are summarized. Thedistributions of Hs and Tz were analyzed using the Hs-Tz scatter diagrams. The measurement wave data were analyzed to investigate freak wave characteristics. By comparing the wave spectrum using the measurement wave data with the wave spectrum obtained by varying the JONSWAP wave spectrum, it was possible to approximate the wave spectrum shape at the Uljin Sea area.
유황진(Hwangjin Ryu),안승환(Seung-Hwan Ahn),유정석(Jeong-Seok Yu),강금파(Kevin Kang) 한국해양환경·에너지학회 2012 한국해양환경공학회 학술대회논문집 Vol.2012 No.11
현재 태국에서 전력생산을 위한 에너지원은 천연가스, 석탄, 수력이 대부분을 차지하고 있으며, 이중 천연가스의 비율이 65.8%로 가장 많은 부분을 차지한다. 태국정부에서는 계속적인 경제성장과 문화생활의 증대에 따른 원활한 전력 수급과 전력생산 에너지원 중 천연가스가 차지하는 비율을 줄이고자 “15 Years Alternative Energy Implementation Plan(2008-2022)”을 발표하였다. 이 중 해상풍력을 포함한 해양 신재생에너지 분야의 기본 정책을 소개하여 태국의 신재생에너지 개발 사업에 국내 산, 학, 연의 참여를 위한 기본 자료를 제공하고자 한다. Natural gas, coal, hydropower energy sources account for the most part for electricity production in Thailand. The natural gas account for 65.8% of the total. Thailand government was announced “15 Years Alternative Energy Implementation Plan (2008-2022)” for the continued economic growth, smooth power supply in accordance with the increase of cultural life and to reduce the proportion of the natural gas. This paper introduce the basic policy of marine renewable energy including offshore wind power, wave power generation and tidal current generation in Thailand for the participation of domestic industry, academia, research institutes.
金島永,柳惶璡 홍익대학교 산업기술연구소 2000 産業技術 Vol.10 No.-
In this paper some elements of beach process are examined including methods of predicting beach process, beach characteristics, and the wave field. The characteristics of the beach process can help to predict the changes of the coast line coastal which will eventually give answers for shore erosion and sediment problem at harbors and other facilities in the coastal zone.