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정문선,문채주,장영학,박태식,이숙희,Jeong, Moon-Seon,Moon, Chae-Joo,Chang, Young-Hak,Park, Tae-Sik,Lee, Suk-Hee 한국전자통신학회 2015 한국전자통신학회 논문지 Vol.10 No.2
The majority of electric power in the domestic manned islands with off-grid power system is supplied by the diesel generators. However, in the case of off-grid islands the fuel cost is more expensive to inland areas and difficult to transport them to islands. So the development of renewable energy system using natural resource have been recently introduced. But renewable energy that depend on the natural environment, it is necessary to organized the hybrid system with existing diesel engine because the energy is difficult to maintain stable electric power. This paper presents the results of a feasibility study of hybrid system with energy storage system such as wind, solar, battery and diesel engine. The study included off-grid island as the Seogeochado islands located in Jeolanamdo Province. And, the paper proposed a optimal capacity of hybrid system configuration to maintain carbon free with minimum investment cost. the analysis of economic adaptability performed by HOMER program. 전력계통이 연계되지 않는 국내 유인도서의 대부분의 전력은 디젤발전기를 통해 공급하고 있으나 도서지역의 경우 유류비가 내륙지역에 비해 비싸고 이를 운송하는 것이 어렵다. 이러한 이유로 최근 자연자원을 활용하여 신재생에너지원을 도입을 하고 있지만 자연환경에 의존하는 신재생에너지원은 안정적인 전력공급이 어렵기 때문에 기존 디젤발전과 신재생에너지가 포함된 하이브리드시스템을 통해 전력을 공급하는 것이 필요하다. 본 논문은 풍력, 태양광, 배터리 및 디젤엔진 등 에너지저장장치를 포함한 하이브리드시스템의 타당성 연구결과를 설명한다. 이 연구 대상은 전력계통에 연계되지 않은 전라남도 서거차도이며, 최소비용을 투자하여 탄소배출을 최소화하는 최적 용량의 하이브리드시스템 구성을 제안한다. 이 시스템에 대한 경제정인 적합성은 HOMER 프로그램을 사용하여 분석하였다.
정문선,문채주,김형길,장영학,박태식,Jeong, Moon-Seon,Moon, Chae-Joo,Kim, Hyoung-Gil,Chang, Young-Hak,Park, Tae-Sik 한국전자통신학회 2014 한국전자통신학회 논문지 Vol.9 No.4
본 논문에서는 마이크로그리드 적용을 위한 50kW 풍력발전기를 설계하였으며, 발전기의 해석은 maxwell 2D 상용프로그램을 사용하였다. 특히 제안된 PMSG는 코깅토크를 줄이고자 offset과 skew를 적용하였다. 최적의 옵셋과 스큐는 2mm와 전기각 60도를 제안하였다. 부하운전시 모의결과는 평균 고조파 1.3%, 전압 322.41V, 전류 94.95A, 철손 9.73W, 와류손 73.68W, 동손 3.52kW로 나타났다. 계산된 발전기 용량은 61.56kW이며, 제안된 설계절차는 더 큰 용량의 발전기설계에 적용할 수 있다. In this paper, the 50kW aerogenerator which is applicable to the microgrid was designed and analyzed by using commercial simulation program Maxwell 2D. Particularly, the suggested PMSG to reduce the cogging torque introduced the offset and skew concept. The suggested optimal value of offset and skew was decided by 2mm and 60 degree of electric angle. The simulation results of the PMSG when load operation condition showed the average harmonic distortion 1.3%, voltage 322.41V, current 94.95A, and iron loss 9.73W, eddy current loss 73.68W, copper loss 3.52kW. The capacity of aerogenerator calculated 61.56kW, and the suggested design process can be applied to higher capacity generator.
정문선(Moon-Seon Jeong),문채주(Chae-Joo Moon),곽승훈(Seung-Hun Kwak),최만수(Man-Su Choi),장영학(Young-Hak Chang) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.11
본 논문에서는 풍력발전단지 설계를 목적으로 사용되고 있는 EMD사의 WindPRO2.6을 이용하여 서남해안에 설치된 50m 높이의 Met mast에서 1년 동안 관측된 풍황자원을 분석하고, 특정 풍력발전기를 적용하여 40㎿급 해상풍력발전단지를 설계했을 경우 연간 생산되는 발전량을 예측하였다.
정문선(Jeong Moon-Seon),문채주(Moon Chae-Joo),정권성(Jeong Gwan-Seong),최만수(Choi Man-Soo),장영학(Jang Yeong-Hak) 한국태양에너지학회 2012 한국태양에너지학회 논문집 Vol.32 No.3
As the wind farms in large scale demand enormous amount of construction cost, minimizing the economic burden is essential and also it is very important Lo measure the wind resources and forecast annual energy production correctly to judge the economic feasibility of the proposed site by way of installing a Met mast at or nearby the site. Wind resources were measured by installing a 80[m] high Met mast at Wangdeung Yeo Island to conduct the research incorporated in this paper and offshore wind farm was designed using WindPRO. Wind farm of 100[㎿] was designed making use of 3 and 4.5[㎿] wind generator at the place selected to compare their annual energy production and capacity factor applying the loss factor of 10[%] and 20[%] respectively to each farm. As a result, 336,599[㎿h] was generated by applying 3[㎿] wind generator while 358,565[㎿h] was produced by 4.5[㎿] wind generator. Difference in the energy production by 3[㎿] generator was 33,660 [㎿h] according to the loss factor with the difference in its capacity factor by 3.8[%]. On the other hand, 23 units of 4.5 [㎿] wind generators showed the difference of annual energy production by 35,857 [㎿h] with 4.0[%] capacity factor difference.