• 기술사
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• 제42권1호
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• pp.49-53
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• 2009

Wind energy development and wind farm construction request multi-disciplinary study and coordination to pursuit economically and technically feasible project that may deliver a viable business model. This paper is to provide the study and coordination procedure with key management factors about the wind energy resource assessment and engineering design for EPC(Engineering, Procurement and Construction) contract for the successful business development.

• 풍력에너지저널
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• 제4권1호
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• pp.39-45
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• 2013

Massive offshore wind projects of have recently been driven in full gear on the Western Offshore of Korea including the 2.5 GW West-Southern Offshore Wind Project of the Ministry of Trade, Industry and Energy, and the 5 GW Offshore Wind Project of the Jeollanamdo Provincial Government. On this timely occasion, this study performed a general wind resource assessment on the Western Offshore by using the MERRA reanalysis data of temporal-spatial resolution and accuracy greatly improved comparing to conventional reanalysis data. It is hard to consider that wind resources on the Western Sea are excellent, since analysis results indicated the average wind speed of 6.29 ± 0.39 m/s at 50 m above sea level, and average wind power density of 307 ± 53 W/m². Therefore, it is considered that activities shall be performed for guarantee economic profits from factor other than wind resources when developing an offshore wind project on the Western Offshore.

• 신재생에너지
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• 제7권1호
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• pp.15-21
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• 2011

In recent years, many countries have been endeavoring to exploit the offshore wind energy in terms of overcoming the limitations of on-land wind energy. Considering that mountains cover 70 percent of the Korean Peninsula and arable plains for wind energy are negligibly small, Korean government aggressively drives the offshore wind development of the Korean Peninsula. As part of preliminary investigation of offshore wind resources, KEPCO-RI (Korea Electric Power Corporation-Research Institute) has been analyzing marine buoy datasets measured at 5 positions over the period of 12 years, including estimation of extreme wind speed. It can be observed that variation of yearly wind speed, monthly wind speed as well as frequency distribution of wind direction. Wind classes of buoy sites are estimated by extrapolated average wind speed using log law. In addition, wind turbine class based on IEC code is assessed for evaluation of suitable wind turbine.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2011년도 춘계학술발표대회 논문집
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• pp.213-216
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• 2011

The feasibility study must be conducted for construction of complex for generation of electric power such as items to get permission and grid connection etc. including wind resource to construct a complex for wind power generation. Since wind power can be used by converting only around 20~40% of energy coming in that kinetic energy of wind passes through blades and driving device into electric energy, when constructing a complex, the survey of wind resource takes up the most important part. Data logger used to measure this wind energy are expressed by calculating generally electromotive that is created from a sensor, variable-type, pulse-type signal to be proper for the actual value, and most data loggers have a type without considering geographical features. Besides, in the case of Met mast that is installed to survey the wind resource, since it is installed lower than the hub height of a wind power generator due to permission matters and the economic factors, the height of wind speed by utilizing Deacon equation is compensated to revise this. In this study, a device measuring wind speed was made by using algorithm that is possible to compensate the height of wind speed according to regional features and by applying Deacon equation, and the function of data storage through SD card or RS232 communication was added as well. Besides it's possible to check data more easily with a type of graph by using LCD touch screen for the convenience of users.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2009년도 춘계학술대회 논문집
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• pp.557-560
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• 2009

When we urgently need to develop and supply an alternative energy, wind power is growing with much interest because it has relative low cost of power and area of tower. To estimate the wind power resource, it is necessary to make an observation first. Although the large wind falm and resources are near coast and mountain area, the wind energy in urban area has the strong thing of direct access to power generator. In this study, we estimate the probability of wind energy above urban area using SODAR data, which is located at the top of the tall building (140m).

• 해양환경안전학회지
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• 제14권3호
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• pp.205-210
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• 2008

화석연료 사용으로 인한 환경오염 및 에너지원가 상승이 큰 문제로 대두되고 있는 현재의 상황을 타개하기 위한 하나의 방안으로 신 재생에너지에 대한 관심이 고조되고 있다. 특히 서해안에 위치하고 있는 새만금 지역은 광활한 면적과 서북서풍이라는 큰 장점을 가지고 있어 풍력발전의 적지로 예상된다. 본 연구는 이러한 예상을 뒷받침해 줄 수 있는 풍력자원을 조사한 것으로 군산지역의 평균풍속은 4 m/s 정도이며, 도서지방을 연계하는 해상풍력발전 단지의 최적지로 손색이 없음을 밝혔다. 또한, 풍력자원의 출현밀도를 판별하는 Weibull의 분포함수를 이용하여 계산하고, 형상계수를 매개변수로 하여 풍속밀도계산을 한 결과, 군산지방의 풍속출현을 예상할 수 있었다.

• 한국환경과학회지
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• 제25권2호
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• pp.247-257
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• 2016

To predict annual energy production (AEP) accurately in the wind farm where located in Seongsan, Jeju Island, Equivalent wind speed (EQ) which can consider vertical wind shear well than Hub height wind speed (HB) is calculated. AEP is produced by CFD model WindSim from National wind resource map. EQ shows a tendency to be underestimated about 2.7% (0.21 m/s) than HB. The difference becomes to be large at nighttime when wind shear is large. EQ can be also affected by atmospheric stability so that is classified by wind shear exponent (${\alpha}$). AEP is increased by 11% when atmosphere becomes to be stabilized (${\alpha}$ > 0.2) than it is convective (${\alpha}$ < 0.1). However, it is found that extreme wind shear (${\alpha}$ > 0.3) is hazardous for power generation. This results represent that AEP calculated by EQ can provide improved accuracy to short-term wind power forecast and wind resource assessment.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2007년도 춘계학술대회
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• pp.420-422
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• 2007

In order to support wind power development in Jejudo, the island of winds, the wind resource database KIER-WindJeju has been established by meteor-statistical analysis on met-mast measurements of KIER. The analysis includes tower shading, exposure category, wind profile exponent for wind speed extrapolation to hub height of wind turbine, and correlation matrix between neighboring sites to assist choice of appropriate reference site for long-term correlation. KIER-WindJeju will be provided as an add-on of Google $Earth^{TM}$ and will be used as a guideline of future wind resource assessment in Jejudo.

• 한국전자통신학회논문지
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• 제13권3호
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• pp.547-554
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• 2018

풍력에너지는 청정 및 재생에너지의 가장 저렴한 모형중의 하나로 널리 알려져 있다. 실제로 몇몇 국가에서는 풍력에너지가 새롭게 건설되는 발전소들 중에서 화석연료 발전단가와 동등한 수준으로 만들어 오고 있다. 해상풍력 에너지 개발은 한국정부의 3020계획 목표달성을 위한 중요한 국내 에너지자원일 것으로 보인다. 풍력프로젝트의 개발단계 중에서 중심이 되는 항목은 풍력자원 평가이다. 풍력자원평가의 기본적인 3가지 등급 또는 단계는 예비부지확정, 부지 풍력자원 평가, 마이크로사이팅 등으로 나누어 분류할 수 있다. 본 연구에서는 6개소 해상기상탑 자료를 기반으로 3단계를 적용하여 전남 해상지역의 풍력발전 용량을 추정하는 것이다. 풍력프로젝트 개발을 위하여 소프트웨어 도구로 25년 이상 실적이 있고 풍력에너지 프로젝트 개발프로그램으로 잘 알려진 WindPRO를 사용하였다. 전남지역 해상풍력발전용량의 설계결과는 6개 풍력단지에서 총 2.52GW로 계산되었다.

• 대한공간정보학회지
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• 제25권1호
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• pp.3-8
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• 2017

본 연구에서는 앙상블 중규모기후모델 weather research and forecasting(WRF)를 이용하여 2045년부터 2054년까지 21세기 중반의 기후변화에 대한 우리나라 미래 풍력자원 지도를 제작하였고 월별, 시간대별 자원변화를 검토하였다. 분석결과, 한반도상에서 강한 몬순 순환으로 인해 뚜렷한 월별 시공간 변동성이 해륙풍에 의한 시간대별 변동성보다 컸다. 풍력자원이 큰 강풍지역은 월마다 지역마다 다르게 나타났다. 즉 겨울철 북서계절풍(여름철 남서계절풍)이 주풍일 때 각각 강원산간과 해상 그리고 남서해안에서 자원이 많을 것으로 전망되었다. 최대풍과 최소풍은 1월, 9월에 각각 나타날 것으로 전망되었고, 시간대별로 내륙과 산간은 일중편차가 컸지만 연안지역은 편차가 작을 것으로 전망되었다. 이는 현재기후에 대한 기존분석결과와는 다소 차이가 있는 것으로, 이 연구에서 생산된 미래 풍력자원 지도는 향후 기후 변화 가능성이 큰 지역의 시공간적 풍황을 감안하여 풍력단지 입지 선정 및 풍력운영을 위한 장기계획 마련에 있어서 유용한 자료가 되리라 기대된다.