• 기술혁신학회지
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• 제12권4호
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• pp.788-818
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• 2009

신 재생 에너지는 석탄, 석유, 원자력, 및 천연가스가 아닌 태양에너지, 바이오매스, 풍력, 소수력, 연료전지, 석탄액화 가스화, 해양에너지, 폐기물 에너지 및 기타로 구분되고 있고, 이 외도 지열, 수소, 석탄에 의한 물질을 혼합한 유동성 연료를 의미한다. 세계 선진국들은 신 재생에너지 기술개발의 중요성을 인식하고 기술개발 및 상용화를 위하여 중장기적인 개발계획을 수립하고 과감한 정책적 재정적 지원을 하고 있는 상황이다. 정부에서 지금까지 추진해 온 신 재생에너지 기술개발사업 유형 및 분야별 성과관리 확산, 사업화 추진이 소기의 목적을 제대로 달성하고 있다는 실증적 효과분석이 필요하다. 신재생에너지와 관련된 연구는 대체에너지 및 태양열, 태양광, 바이오매스 등 각각의 기술에 대한 개발 보급 현황과 특수한 지역에 대한 타당성 검토 등의 연구가 주를 이루었다. 관련연구의 검토 결과는 신재생에너지 중에서 재생에너지 혹은 전체 에너지 공급과 수급의 문제 나아가 특정 분야의 공급능력 향상을 위한 대책 등에 중점을 두고 있고, 신재생에너지 기술개발 확대에 따른 관련 사업의 능력 증대나 사업화 측면의 심층연구는 아직 부족한 실정이라고 판단된다. 미국과 영국의 다양한 신재생에너지 개발 및 보급 지원정책 등은 우리나라도 유사하게 추진하고 있으며, 일본이 태양광 분야에서 주도적인 입장을 취할 정도로 전진한 배경은 정부주도지원, 기업참여, 사회적 이슈화 등을 들 수 있다. 신재생에너지 기술개발 및 사업화의 계량적 거시경제적 효과분석은 신재생에너지를 중심으로 하는 '에너지원별 비용/편익분석 모형'을 활용하여 신재생에너지 기술개발에 의한 관련 산업 생산 증대, 부가가치 향상 효과 등을 예측하는 기법을 적용한다. 신재생에너지 기술개발 투자와 신재생에너지 생산량 및 발전량의 관계는 각각 정비례하고, R&D총투자에 의한 신재생에너지 생산량 승수에 비해 에너지 발전량 승수가 상대적으로 약간 높았다. 이는 최종 소비재인 에너지 발전량에 대한 기술개발 영향이 크다는 의미이다. 신재생에너지 생산량에 대한 R&D총투자는 정(+)의 영향을 미치고 있는데, 정부지원금은 정(+)의 영향이지만 민간투자액은 역(-)의 영향관계로 나타났다. 이는 신재생에너지 생산량에 대한 연구개발 효과가 민간투자 보다 정부지원금에 의해 주도되고 있음을 시사한다. 반면 신재생에너지 발전량에 대한 R&D총투자는 정(+)의 영향을 미치고 있는데, 정부지원금과 민간투자 모두 영향관계가 없는 것으로 나타났다. 이는 신재생에너지 분야의 발전량에 대한 연구개발 효과가 정부지원금과 민간투자 모두 영향을 미치고 있지 못하고 있음을 시사한다. 본 연구의 분석 결과의 시사점으로는 신재생에너지 기술개발 및 사업화 추진에 있어서 정부 지원정책도 중요하지만 민간의 투자와 적극적인 참여가 사업 성공의 관건이라는 점을 감안할 필요가 있다.

• KDI Journal of Economic Policy
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• 제41권4호
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• pp.67-99
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• 2019

This paper, focusing on the renewable portfolio standard (RPS), evaluates alternative renewable energy policies. We propose a tractable equilibrium model which provides a structural representation of Korea's electricity market, including its energy settlement system and renewable energy certificate (REC) transactions. Arbitrage conditions are used to define the core value of REC prices to identify relevant competitive equilibrium conditions. The model considers R&D investments and learning effects that may affect the development of renewable energy technologies. The model is parameterized to represent the baseline scenario under the currently scheduled RPS reinforcement for a 20% share of renewable generation, and then simulated for alternative scenarios. The result shows that the reinforcement of the RPS leads to higher welfare compared to weakening it as well as repealing it, though there remains room to enhance welfare. It turns out that subsidies are welfare-inferior to the RPS due to financial burdens and that reducing nuclear power generation from the baseline yields lower welfare by worsening environmental externalities.

• KEPCO Journal on Electric Power and Energy
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• 제8권2호
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• pp.55-59
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• 2022

This paper introduce Renewable Energy forecasting technology, which is a part of renewable management system. Then, calculation method of dedicated transmission line's meteorological data to forecast renewable energy is suggested. As the case of dedicated transmission line, there is only power output data combined the number of renewable plants' output that acquired from circuit breakers. So it is need to calculate meteorological data for dedicated transmission line that matched combined power output data. this paper suggests two calculation method. First method is select the plant has the largest capacity, and use it's meteorological data as line meteorological data. Second method is average with weight that given according to plants' capacity. In case study, suggested methods are applied to real data. Then use calculated data to Renewable forecasting and analyze the forecasting results.

• 한국태양에너지학회 논문집
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• 제32권2호
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• pp.50-57
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• 2012

Recently the renewable energy has been used widely and the importance of renewable sources is bigger than before. And the government enforced a law to the public buildings to install the renewable energy facilities. The capacity of facilities was 5% of total construction cost until April 13, 2011. Since then, the government changed the law from 5% of total construction cost to 10% of predicted energy usage for the resonable use of the renewable energy facilities. In this study, the comparative analysis is conducted according to the law to the building installed PV system through the Energy Plus simulation. And the method for improving renewable energy supply ratio was analyzed using existing PV array. Adjusting the PV array angle is the best way to generate more electric power without additional fee. When applying the month optimum angle, 3,600kWh of electric power are more generated compared to the existing angle.

• 한국태양에너지학회 논문집
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• 제33권2호
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• pp.42-49
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• 2013

Recently, the attention to renewable energy has increased globally because of the environmental issue and the global energy crisis. Accordingly, south korea is focused on increasing the renewable energy usage. And the government enforced a law to the public buildings to install the renewable energy facilities. In this study, the building to evaluate renewable energy consumption and supply ratio was selected. This building has 9.79% of renewable energy supply ratio by PV system. In this study, the method for improving renewable energy supply ratio was analyzed using additional PV system. And The 5 methods to increasing electricity were evaluated. The method of increase 4.24 times PV arrays area is most efficient way to increase the renewable supply ratio. The case 1, show that the increasing renewable energy supply ratio of 39.2% compared to exsiting PV system. The result of the above, consider the additional supply of renewable energy.

• 신재생에너지
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• 제20권1호
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• pp.95-101
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• 2024

Since 1990, the Renewable Big Data Research Lab at the Korea Institute of Energy Technology has been observing solar radiation at 16 sites across South Korea. Serving as the National Reference Standard Data Center for Renewable Energy since 2012, it produces essential data for the sector. By 2020, it standardized meteorological year data from 22 sites. Despite user demand for data from approximately 260 sites, equivalent to South Korea's municipalities, this need exceeds the capability of measurement-based data. In response, our team developed a method to derive solar radiation data from satellite images, covering South Korea in 400,000 grids of 500 m × 500 m each. Utilizing satellite-derived data and ERA5-Land reanalysis data from the European Centre for Medium-Range Weather Forecasts (ECMWF), we produced standard meteorological year data for 1,000 sites. Our research also focused on data measurement traceability and uncertainty estimation, ensuring the reliability of our model data and the traceability of existing measurement-based data.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2005년도 춘계학술대회
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• pp.592-599
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• 2005

Renewable energy technology development has been carrying out in 11 different areas so far. Many technologies are being applied to the required areas according to its own characteristics. Before launching the development, these technologies have been evaluated by their commercial effect and contribution to energy supply. In this paper, the impact factors enhancing the distribution of renewable energy were developed to select appropriate diffusion regulations for each technology area. In addition, AHP methodology was introduced to investigate priorities of the regulations along with weights of impact factors.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2008년도 추계학술발표대회 논문집
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• pp.327-331
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• 2008

In this paper, we argue that new&renewable energy resources are difficult to be managed with GIS technology due to their spatiotemporal features, and suggest that spatiotemporal database and sensor network can be applied to the new&renewable energy management system as advanced technology. To give the motivated issues, we introduce and analyze the concept of the spatiotemporal database and sensor network, and the case studies in each applications.

• Advances in Energy Research
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• 제4권1호
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• pp.47-68
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• 2016

A well designed hybrid power system (HPS) can deliver electrical energy in a cost effective way. In this paper, model for HPS consisting of photo voltaic (PV) module and wind mill as renewable energy sources (RES) and solar lead acid battery as storage device connected to unidirectional grid is developed for peak demand reduction. Life time energy cost of the system is evaluated. One year hourly site condition and load pattern are taken into account for analysing the HPS. The optimal HPS is determined for least life time energy cost subject to the constraints like state of charge of the battery bank, dump load, renewable energy (RE) generation etc. Optimal solutions are also found out individually for PV module and wind mill. These three systems are compared to find out the most feasible combination. The results show that the HPS can deliver energy in an acceptable cost with reduced peak consumption from the grid. The proposed optimization algorithm is suitable for determining optimal HPS for desired location and load with least energy cost.

• 통합자연과학논문집
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• 제16권4호
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• pp.139-145
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• 2023

Due to changes in the distribution system and increased demand for renewable energy, interest in technology to increase the limit capacity of distributed energy grid connection using grid flexible resources is also increasing. Recently, the distribution system system is changing due to the increase in distributed power from renewable energy, and as a result, problems with the limited capacity of the distribution system, such as waiting for renewable energy to connect and increased overload, are occurring. According to the power generation facility status report provided by the Korea Power Exchange, of the total power generation capacity of 134,020 MW as of 2021, power generation capacity through new and renewable energy facilities is 24,855 MW, accounting for approximately 19%, and among them, power generation through solar power accounts for a total portion of the total. It was analyzed that the proportion of solar power generation facilities was high, accounting for 75%. In the future, the proportion of new and renewable energy power generation facilities is expected to increase, and accordingly, an efficient operation plan for the distribution system is needed. Advanced country-type NWAs that can integrate the operation and management of load characteristics for each line of the distribution system, power distribution, regional characteristics, and economic feasibility of distributed power in order to improve distribution network use efficiency without expanding distribution facilities due to the expansion of renewable energy. An integrated operating system is needed. In this study, in order to improve the efficiency of distribution network use without expanding distribution facilities due to the expansion of renewable energy, we developed a method that can integrate the operation and management of load characteristics for each line of the distribution system, power distribution, regional characteristics, and economic feasibility of distributed power. We want to develop an integrated operation system for NWAs similar to that of advanced countries.