• Journal of the Korean earth science society
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• v.31 no.3
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• pp.225-233
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• 2010

Wind power density distribution over the North Korea territory was investigated by using 30-year wind observations at 27 meteorological stations. The mean annual wind power density over North Korea turned out to be 58.6W/$m^2$, which corresponds to the wind power class of 1. The wind power density shows a seasonal variation, having the highest density in spring and the lowest in summer. In particular, the wind power density in summer is about a half of that in spring. The diurnal variation of the wind power density shows that the highest and lowest densities occur in the afternoon and between 3 and 6 am in local time, respectively. The most potential wind energy generation regions are the Gaema Plateau in the central region, the northeast part of Hamgyeongbuk-do, the south coast of Pyongan-do and the west coast of Hwanghae-do. The mean annual wind power density in Changjin is 151.2W/$m^2$, which is equivalent to the class of 3. In Ryongyon, the annual mean wind power density is 102.4W/$m^2$, which belongs to the class of 2.

• 한국신재생에너지학회:학술대회논문집
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• 2009.06a
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• pp.500-503
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• 2009

국내 해역의 해상풍력 개발 가능량을 평가하기 위하여 풍황, 수심 등을 고려하여 개발 가능량을 추정하였다. 풍력등급 3 이상, 수심 50 m 이내의 영역에 대하여 사회.환경적 영향을 고려하기 위한 제약조건을 반영하여 개발 가능량을 산출하였으며, 현재의 기술수준으로 개발 가능하다고 판단되는 수심 30 m 이내의 영역에 대한 개발 가능용량이 약 11 GW 정도로 추정됨에 따라 풍력발전 용량을 2030년까지 7.3 GW 이상 확보하고자 하는 국가 신재생에너지 보급목표의 달성 가능성이 기대된다. 본 연구결과는 해상풍력 개발단지 선정을 위한 기초 자료로 활용되며, 입지 선정 후 기상관측, 환경영향조사 등의 세분화된 단지조사를 통한 해상풍력 실증단지 설계 및 경제성 평가 등이 계속 진행될 예정이다.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.392-393
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• 2011

본 논문에서는 제주 한림 풍력발전소와 한림 변전소간에 구축할 예정인 ${\pm}80kV$ 60MW HVDC 시스템의 절연 설계를 위해, 각 구성품의 절연 등급을 수 계산으로 설계하였다. 계산된 절연등급을 기반으로 한림 변전소와 한림 풍력 단지에 설치되는 HVDC 기기들의 최소 절연거리를 IEC 규격에 맞게 설계하였다. AC/DC 기기의 특정 전압 등급에 견딜 수 있는 최소 거리는 실제 시스템 설치 시 반영함으로써 검증하였다.

• Journal of Environmental Impact Assessment
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• v.32 no.6
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• pp.577-589
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• 2023

In Korea, the technical techniques for assessing visual impacts are standardized, but the methods for assessing the marine landscape itself are not standardized and need to be improved. In particular, in the landscape impact assessment of offshore wind power generation in Korea, it is necessary to recognize the landscape itself as a receptor and prepare a system that can evaluate the characteristics and sensitivity of the landscape. In this study, we propose an evaluation method for preparing a marine landscape quality assessment document that reflects the project characteristics of offshore wind power projects, and examine the possibility of utilization by applying it to actual project sites as an example. To evaluate the quality of marine scenery in offshore wind power projects, evaluation items of landscape characteristics, physical characteristics, and socio-cultural characteristics were evaluated based on the preliminary survey contents, and the quality of marine scenery was divided into five grades. Next, the evaluation criteria of the evaluation items were synthesized and the quality of the marine landscape was classified into preservation grade (grade 5), semi-preservation grade (grade 4), buffer grade (grade 3), semi-improvement grade (grade 2), and improvement grade (grade 1). In addition, the Sinan-Ui Offshore Wind Farm, an actual project site, was randomly selected to conduct the evaluation process and examine its utilization. This study aims to complement the existing method of visual impact assessment in offshore wind power projects and evaluate the quality of the marine landscape itself to effectively conserve marine landscape resources during offshore wind power projects. Rather than relying on mechanical and quantitative evaluation, this study is expected to be used as a basis for comprehensive understanding of the location and socio-cultural characteristics of the project site and for communication and cooperation with stakeholders.

• Journal of Korean Society for Geospatial Information Science
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• v.23 no.1
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• pp.15-22
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• 2015

To create a wind resource map, we need a contour map, a roughness map and wind data. We need a land cover map for the roughness map of these data. A land cover map represents the area showing similar characteristics after color indexing based on the scientific method. The features of land cover is classified by Remote sensing technique. In this study, we verified the application of the NDVI technique is reasonable after we created the wind resource map using roughness maps by unsupervised classification and NDVI technique. As a result, the wind resource map using the NDVI technique showed a 60% accordance rate and difference in class less than one. From the results, The NDVI technique is found alternative to create roughness maps by the unsupervised classification.

• The Journal of the Korea institute of electronic communication sciences
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• v.6 no.3
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• pp.417-423
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• 2011

Generally, in order to avoid overlap with previous research and to initiate the innovative research, researchers must analyze patent information before research can begin. In this paper, the development of grading criteria using current trends in the wind power generation will be performed by analyzing the following criteria: technology position of major countries, impact factor each countries, patent family size, patent portfolios analysis, patent applied analysis, and analysis of nationality for a patent. This patent information for the wind power generation is expected to be useful in deciding the direction of future research.

• 한국방재학회:학술대회논문집
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• 2009.02b
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• pp.155.1-155.1
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• 2009

• Proceedings of the KIPE Conference
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• 2011.11a
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• pp.309-310
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• 2011

풍력 발전 시스템을 설치하기 위해서는 사전에 타당성 조사가 반듯이 이루어져야 한다. 풍력자원 분석은 발전기 종별 발전량을 예측하여 효율적인 발전기(안전등급포함)를 선택할 수 있으며, 향후 발전기를 설치할 경우 선정지점의 지지 기반 및 기초공법에 관한 기초자료로 활용이 가능하다. 그러므로 본 논문에서는 12비트 분해 능력을 가지고 있는 DSP-f28335 마이크로 콘트롤러를 사용하여 IEC61400-1 국제기준에 준수하여 풍향, 풍속, 온도를 측정하고 저장이 가능한 풍력자원 분석장치를 개발하였다.

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2001.11a
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• pp.115-122
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• 2001

본 개발대상 장치인 풍력을 통한 하강류 형성장치는 심층에 산소를 공급하여 패류가 증식하게 하므로 정화를 할 수 있도록 하는 장치이다. 본 연구의 결과, 풍력 저수지 수질개선장치를 통해 모든 호소의 수질등급을 상향시킬 수 있을 것이다. 특히, 새만금, 시화호 등 문제 있는 호소까지 인간에 유익한 수질로 개선 함으로써 국가적인 이익은 물론 전세계의 수원을 정화하여 인류의 수자원 문제를 해결할 수가 있을 것이다. 동력에 의한 방법은 언제든지 적용할 수 있지만, 풍력에 의한 장치로 에너지 비용과 설치비용을 절감하는 것이 본 개발대상 장치를 통해 얻을 수 있는 효과이다. 현재 국내의 저수지는 약 12,000개소에 달한다 이 저수지들에 오염도에 따라 5대～200대 정도를 설치할 경우(소양이나 새만금 등), 장치의 대당 가격이 1,000 만원～1,500 만원이므로 국내 수요로 약 2조 4천억원의 내수시장이 형성될 수 있을 것이다.

• New & Renewable Energy
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• v.5 no.2
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• pp.39-48
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• 2009

Recently, developing the offshore wind farm in Korean peninsula is widely understood as essential to achieve the national target for the renewable energy. As part of national plan, KEPRI (Korea electric power research institute) is performing the front running project for the offshore wind farm development that is dedicated to investigate the possible resources based on the economy considering current technological status. It also includes the selection of the first sea area among candidates and optimal design of the offshore wind farm, etc. In this paper the interim results of the project are summarized that the possible capacity for the offshore wind farm can be estimated conservatively around 18 GW regarding the wind power class, sea depth and social constraint. The five western sea areas near Taean, Gunsan, Gochang, Yeonggwang, Sinan were chosen for the candidating sites. Detailed analysis for these sites will be conducted to finalize the first-going offshore wind farm in Korea.