• 한국해양환경ㆍ에너지학회지
• /
• 제18권2호
• /
• pp.123-132
• /
• 2015

본 연구에서는 10 MW급 부유식 파력-해상풍력 연계형 발전시스템에 설치되는 다수 풍력발전기의 배치 설계를 수행하고, 전산유체역학 해석기법을 통해 다수 풍력발전기의 성능을 평가하였다. 날개요소운동량이론을 기반으로 한 풍력발전 단지 설계용 프로그램 WindPRO를 이용하여, 발전시스템의 적지 환경 풍황조건에 대해 최대에너지를 생산할 수 있는 배치 설계를 도출하였고, ANSYS CFX를 이용하여 다수 풍력발전기간의 후류 간섭영향을 발전기 성능 측면에서 검토하여, 근거리 다수 풍력발전기간의 후류 간섭이 시스템에 미치는 영향을 평가하였다.

• 한국신재생에너지학회:학술대회논문집
• /
• 한국신재생에너지학회 2006년도 춘계학술대회
• /
• pp.241-244
• /
• 2006

Recently wind turbines become large, constructed as farms and going out to offshore. Different design approach from onshore is needed for offshore wind turbine. At this paper concept and preliminary design of an offshore wind turbine of 3MW rated power are performed. The concept design started from modelling of the generator and gearbox. With these modelling the optimum specifications was acquired. Integrated type of drive train is designed with all parts are mounted on the tower top as the offshore maintenance strategy. At the preliminary stage control system, power production algorithm and safety system are designed. Load calculation is also performed. The 3MW offshore wind turbine concept/preliminary design and the process of design are obtained as results.

• 한국구조물진단유지관리공학회 논문집
• /
• 제27권4호
• /
• pp.33-44
• /
• 2023

풍력에너지는 저탄소 사회로 전환하는 과정에서 가장 효율적이고 신뢰할 수 있는 에너지원 중 하나이다. 특히 해상 풍력은 육상 풍력에 비해 안정적이고 고품질의 풍력 자원을 제공하며, 다른 재생에너지에 비해 설치 용량이 높다. 본 논문에서는 해상 풍력 터빈의 하부 구조물 해석에 적합한 새로운 프로그램인 X-WIND 프로그램에 대해 소개하였다. 이 프로그램은 기존 프로그램의 단점을 보완하여 해상풍력 하부구조 해석 프로그램의 활용성을 높이기 위해 개발되었다. 하나의 프로그램 내에서 하부구조물을 단독으로 해석할 수 없거나 전후처리기가 미비한 기존 프로그램과 달리, X-WIND 프로그램은 AutoCAD에 내장되어 있어 설계와 해석이 모두 단일 플랫폼에서 수행된다. 또한 해상 풍력 구조물에 필수적인 바람, 파도, 조류 하중에 대한 정적 및 동적 해석을 수행하며 설계, 요소망 생성, 그래프 생성, ULS/FLS 체크를 위한 전후처리기가 포함되어 있다. 이러한 특징을 바탕으로 해상 풍력 에너지 하부 구조물 해석 프로그램의 효율성과 사용성을 향상시켰다.

• 풍력에너지저널
• /
• 제13권2호
• /
• pp.13-22
• /
• 2022

In this study, the resonant motion of a floating offshore wind system due to negative damping was mitigated by peak shaving algorithms of the NREL ROSCO controller, and the decreased gains of the blade pitch controller by the gain detuning method for the floating system was increased to the gains of onshore baseline controller to improve the power performance of the turbine. To check the performance of the controller, the dynamic responses between the existing gain-detuned pitch controller and the ROSCO controller with peak shaving control for an OC4 floating offshore wind system were compared. As a result of DLC1.1 at near-rated wind speed, when peak shaving was applied, the average generator power decreased by 1.9%, but it was confirmed that the standard deviation was reduced and stability was improved with fast pitch regulation. In addition, since peak shaving reduces the maximum thrust of the rotor, was confirmed that not only are the loads of the blades and tower reduced, but the surge motion of the floater is also reduced, and the tension of the mooring lines is reduced.

• 한국신재생에너지학회:학술대회논문집
• /
• 한국신재생에너지학회 2009년도 춘계학술대회 논문집
• /
• pp.534-535
• /
• 2009

The objective of this research aims preliminary assessments of the proposed plans of offshore wind farm development based on the recently established national offshore wind map and suitability assessment system of offshore wind farm. Incheon Mueodo, Busan Dadaepo-Gadukdo, Sinangun Haeodo have been assessed considering geographic constraints such as water depth, offshore distance, national park, grid connection, and meteorological constraint such as wind power density and wind direction. According to the assessment, Mueodo plan has a weak point in grid connection and several geographic limitations are involved in Haeodo plan while Dadaepo-Gadukdo seems the most possible plan among the review cases. Because of limited assessment in this research, more detail and further consideration are necessary to make a decision of a feasibility project at proposed sites.

• 풍력에너지저널
• /
• 제14권2호
• /
• pp.5-13
• /
• 2023

As offshore wind farms are developed, the importance of cooperation with stakeholders such as fishermen from the initial phase is gradually increasing. This study developed a methodology that can promote the involvement of fishermen in the site feasibility review process. The spatial scope is Gunsan City, which is establishing an initial offshore wind project strategy. A survey was conducted for representatives of 12 fishing villages on the location preference for offshore wind farms. As a result, fishermen suggested negotiable or absolute opposite locations by examining a local sea map. Location preference seems to depend on the degrees of vitalization of fisheries using vessels. This study shows that fishermen can have reasonable opinions according to the location, not unconditionally, in initial discussions on offshore wind power. Investigating stakeholders with various positions is essential, and adjustments are needed for conflicting points in the future.

• 풍력에너지저널
• /
• 제13권2호
• /
• pp.23-30
• /
• 2022

According to the "Offshore Wind Development Plan," large-scale project-oriented supply expansion is necessary to achieve 12 GW by 2030. But implementation may be delayed due to difficulty in securing the acceptance of residents. This study looked at residents' acceptance by comparing the perceptions of local representatives in Gunsan and Jeju. To this end, six in-depth interviews were conducted and the entire contents of the interviews were converted to text files. By using text network analysis (Netminer 4.4), the cognitive structure of local representatives was analyzed and compared. Based on the analysis results, Maldo, Myeongdo and Bangchukdo in Gunsan are promoting offshore wind farms in fishing license areas of the three islands in order to respond to opposition from other fishing village fraternities. In Dumo-ri, Jeju, important discussions and decisions related to offshore wind farms were decided in meetings (offshore wind power promotion committee, village assembly).

• 전력전자학회:학술대회논문집
• /
• 전력전자학회 2011년도 전력전자학술대회
• /
• pp.510-511
• /
• 2011

This paper has represented about the activated scheme the Honam regional wind power industry favorable products. The favorable products are the MW offshore wind system with Outer-rotor type PMSG-6 products, the 3MW offshore wind system with adatation type of west-south sea, and the hybrid generator system with wind turbine technology basis-2 products.

• 환경영향평가
• /
• 제21권1호
• /
• pp.1-13
• /
• 2012

We diagnosed on status and problems of environmental assessment regarding development of offshore wind power, and also on reasonable core assessment items. Most of the coastal wind power are located on the western coastline of Korea and Jeju Island. In the selections of the site for the offshore wind farms, a previous investigations should be conducted with regard to distances from the land, stabilities from external forces (tide, wave, etc.) and topographical changes, and characteristics of the surroundings (distributions of protected area, fishing ground, artificial seagrasses, and shipping traffic). It is needed to assess dispersion of suspended solids, changes of the sea bottom, and impacts on fisheries resources and fishing activities under construction of offshore wind power. Furthermore, the responses of marine organisms to noise and vibration, impacts by electromagnetic fields, impacts on sea birds, hindrances to sea lane routes, and damaged scenery and marine protection areas are thoroughly assessed during operation processes. The consultation criteria in case of development of offshore wind farm is adjusted by focusing marine environmental impact assessment.

• International Journal of Naval Architecture and Ocean Engineering
• /
• 제9권1호
• /
• pp.45-54
• /
• 2017

The purpose of this study is to evaluate various means of wind power turbines installation in the Korean west-south wind farm (Test bed 100 MW, Demonstrate site 400 MW). We presented the marine environment of the southwest offshore wind farm in order to decide the appropriate installation vessel to be used in this site. The various vessels would be WTIV (Wind turbine installation vessel), jack-up barge, or floating crane ${\cdots}$ etc. We analyzed the installation cost of offshore wind turbine and the transportation duration for each vessel. The analysis results showed the most suitable installation means for offshore wind turbine in the Korean west-south wind farm.