신·재생에너지를 이용한 에너지 자립섬에 관한 연구

Abstract

Energy is related to density and the economy causes the problem of energy poverty to the economically weak people in a society. This problem tends to get worse in islands where it is socially and geographically distant from the urban areas. Energy cost is high in islands due to the increased expenditures from facilities distant from the energy source and the lack of demand. Therefore, the renewable energy should be applied to the island considering the energy welfare of the island peoples. The purpose of this study is to make a model about the energy self-sufficient island in Yeosu. In order to meet the goal, the economic propriety of renewable energy facility and the amount of energy at home and also the climate in Yeosu were analyzed. Homer V2.67 was used to analyze the propriety of energy load. It is shown through the climate analysis and paper research that the solar and wind power combination were suitable for the creation of energy self-sufficient island in Yeosu. The simulation was done based on the island size and climate using Homer, and the result are as followings. First, in case of creating energy self-sufficient islands using wind and PV in Pyung Island, which consists of 20 household, up to 83% of energy-independence rate can be gained. $55,128 is required per year in order to operate and manage the generation's facility, and it is expected that energy expenses will be $2,756 per household. Secondly, the energy-independence rate using renewable energy can be up to 96% in Sang-hwa Island, and the operation and management cost $48,301 per year, which is $1,610 per household. In the case of Soyoja Island, it is anticipated that up to 96% can be possible, and the operation and management cost are $48,839 per year. Lastly, in Yoja Island consisting of 100 household , it is expected that up to 96% of energy-independence rate can be possible. The required amount of money is $125,855 per year for O&M.