• 토지주택연구
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• 제10권2호
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• pp.15-28
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• 2019

This study aims to investigate the urban regeneration policies in Japan especially focusing "New Town" regeneration. New Town projects were launched in major Japanese cities, aiming to form a designed urban housing area and a mass supply of quality housing, in order to solve the lack of housing and urban sprawl which became a serious issue due to the over-concentration of population and industries in the city during the period of rapid economic growth. Tama New Town and Kohoku New Town are well-known development projects in 1970s and 80s; They attract wide attention again as urban regeneration policies focusing on a Smart city as well as Private-Public Partnership.

• 신재생에너지
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• 제19권3호
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• pp.1-12
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• 2023

This study aims to evaluate the optimal size of the hydrogen facility to be installed in a zero-energy district in terms of load matching and facility efficiency. A mismatch between energy generation and consumption is a common occurrence in zero-energy districts. This mismatch adversely effects the energy grid. However, using an energy carrier such as hydrogen can solve this problem. To determine the optimal size of hydrogen fuel cells to be used on-site, simulation of hydrogen installation is required at both district-and building- levels. Each case had four operating schedules. Therefore, we evaluated eight scenarios in terms of load matching, heat loss, and facility operational efficiency. The results indicate that district-level installation of hydrogen facilities enables more efficient energy use. Additionally, based on the proposed model, we can calculate the optimal size of the hydrogen facility.

• 신재생에너지
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• 제6권1호
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• pp.20-28
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• 2010

Developing the offshore wind farm is essential to meet the national target of the renewable energy and to achieve the green growth in Korea. In this context, KEPRI is now carrying the feasibility study for introducing the offshore wind fam in Korea. Accordingly, it is required to formulate an appropriate strategy, this paper mainly discuss, for this goal. First of all, several preliminary sites for the offshore wind farm are selected based on the evaluation criteria presented herein. In addition, the domestic sub-technological level of key technology sectors associated with the offshore wind power is analyzed. It includes the industries related to wind turbine, grid integration, structural design and construction. Integrating these results, we propose a strategy in order to successfully develop the first offshore wind farm more than 100-MW class in the south-western sea area of Korea.

• 풍력에너지저널
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• 제14권3호
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• pp.25-33
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• 2023

In order to secure the safety of increasing offshore activities such as offshore wind farm maintenance and fishing, IMPACT, a mid-term marine weather forecasting system, was established by predicting marine weather up to 7 days in advance. Forecast data from the Korea Hydrographic and Oceanographic Agency (KHOA), which provides the most reliable marine meteorological service in Korea, was used, but wind speed and wave height forecast errors increased as the leading forecast period increased, so improvement of the accuracy of the model results was needed. The Model Output Statistics (MOS) method, a post-correction method using statistical machine learning, was applied to improve the prediction accuracy of wave height, which is an important factor in forecasting the risk of marine activities. Compared with the observed data, the wave height prediction results by the model before correction for 6 to 7 days ahead showed an RMSE of 0.692 m and R of 0.591, and there was a tendency to underestimate high waves. After correction with the MOS technique, RMSE was 0.554 m and R was 0.732, confirming that accuracy was significantly improved.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2015년도 제46회 하계학술대회
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• pp.282-283
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• 2015

세계 각국은 에너지 환경, 안보 및 경제에 능동적으로 대처하기 위해 신재생에너지 개발에 국가적 역량을 집중하고 있으며, 그 중 기술의 완성도 및 경제성이 가장 앞서있는 풍력발전 분야의 참여 비중을 점점 확대하고 있는 추세이다. 그러나 풍력에너지 활용의 효율성, 전력의 품질면에서 1~2기 정도의 풍력발전기의 계통연계는 효과적이지 못하기 때문에, 수기에서 수십기의 대용량 풍력발전기로 구성된 대단위 풍력발전단지를 통해 전력을 생산, 공급하는 것이 바람직하다. 따라서, 본 논문에서는 RTDS 시뮬레이터를 이용하여 제주도 한경풍력발전단지의 실시간 시뮬레이션 환경을 구축할 수 있는 3MW급 DFIG 풍력발전기를 모델링하여, 3MW, 5기로 구성된 풍력발전단지를 RTDS를 이용하여 구현하였다.

• 전기저널
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• 통권346호
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• pp.36-40
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• 2005

캐나다 정부는 기후변화 대책의 일환으로 청정 및 신재생 에너지인 풍력 에너지의 발전 용량을 증대시키기 위한 대형 풍력발전단지를 신규로 조성키로 하는 등 최근 풍력발전용량의 증설을 활발히 추진하고 있습니다. 이와 관련한 풍력 발전의 시책과 동향을 개조식으로 소개합니다.

• 건축사
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• 통권479호
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• pp.73-84
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• 2009

• 건축사
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• 통권478호
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• pp.68-75
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• 2009

• 한국조경학회:학술대회논문집
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• 한국조경학회 2020년도 추계학술대회 논문집
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• pp.7-8
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• 2020

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2018년도 공동국제학술발표회
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• pp.159-159
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• 2018