HOMER를 활용한 백령도와 외도의 신재생에너지발전 경제성 분석 및 최적 조합 제안

Abstract

현재 도서지역의 에너지 발전시스템은 주로 화석연료를 사용하는 디젤 발전시스템으로 발전 비용에 도서지역으로의 화석연료 운송비용이 포함되어 발전단가가 내륙지역에 비해 비싸다. 이를 해소하기 위해 에너지 자립 섬 구축에 대한 연구가 이루어지고 있다. 그러나 선행연구들은 주로 제주도, 울릉도, 가파도와 같은 주요 도서지역에 대해 이루어져 에너지 결손액이 큰 지역이나 소규모 도서지역에 대한 연구가 부족하다. 본 연구는 결손액이 큰 백령도와 거주 인구가 적은 외도에 대해 신재생에너지발전 시스템 도입의 타당성을 검증하고 최적의 조합을 제안한다.

Most energy generating systems in island areas are diesel energy generation using fossil fuel. The transportation cost of fossil fuel to the island areas makes generation cost three to four times more expensive. To solve this economic loss, the establishment of energy independent island through introduction of renewable energy generation system in the island areas is being considered. Prior research are generally focus on major island areas such as Jejudo, Ulleungdo and Gapado etc. However, to verify about applying renewable energy generation systems on the island areas, considering the all types of characteristic of the island areas such as high economic loss from energy generation or small population of less than 100 people is essential. This study is conducted as case study on Baengnyeongdo which has high economic loss and Oedo which has small population of less than 100 people. To examine the feasibility of applying renewable energy generation system in Baengnyeongdo and Oedo, a combination of existing diesel energy generation system and renewable energy generation system was proposed and economic analysis using NPV(Net Present Value) and LCOE(Levelized Cost of Energy) was proceeded. The experiment was conducted using simulation, HOMER(Hybrid Optimization Model for Electric Renewable) was used as simulation program. Environment and weather data of Baengnyeongdo and Oedo and renewable energy genration system data obtained from KEPCO(Korea Electric Power Corporation), NREL(National Renewable Energy Laboratory) and HOMER were used as simulation dataset. The optimal combination of energy generation system for Baengnyeongdo and Oedo was proposed and it was confirmed that there would be economic benefits if the introduction of the renewable energy generation system continued for more than 9 years.