• 설비공학논문집
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• 제26권10호
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• pp.474-480
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• 2014

This study investigated the total energy consumption and the energy consumption by type of 31 apartment complexes in Daejeon. The energy is supplied to the apartments from district heating, and can be divided into hot water, electricity, and gas. Hot water is used in for space heating and for domestic hot water (DHW), and electricity is used for plugs, cooling, ventilation, and public utilities (street lights, pumps, elevators, etc.). All gas supplied from district heating is used for cooking. As a result, the consumption unit of each energy source of independent dwelling areas was calculated to be $103.7kWh/m^2{\cdot}a$ ($15,692kWh/H{\cdot}a$) for thermal energy, $48.0kWh/m^2{\cdot}a$ ($4,646kWh/H{\cdot}a$) for electricity, and $10.5kWh/m^2a$ ($1,015kWh/H{\cdot}a$) for gas, so the entire consumption was calculated to be $162.3kWh/m^2{\cdot}a$ ($15,692kWh/H{\cdot}a$).

• 자원ㆍ환경경제연구
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• 제27권4호
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• pp.613-637
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• 2018

분산전원으로서의 장점을 지닌 연료전지는 높은 투자비용과 전력가격의 불확실성에 영향을 받는다. 본 논문에서는 연료전지 투자의 비가역성과 전력가격의 불확실성을 고려한 실물 옵션 모형을 제시하도록 한다. 대부분의 실물옵션 모형은 분석의 편의상 기하학적 브라운 과정을 가정하지만, 본 연구에서는 평균회귀적인 전력가격의 특성을 반영한 경제성 평가모형을 개발하되 투자옵션 가치의 닫힌 해 또한 제시하도록 한다. 20MW급 연료전지 발전을 위한 데이터와 국내 RPS 상황을 고려한 실증분석 결과, 가격 불확실성을 고려하지 않은 경우 연료전지 발전의 투자 경제성은 확보되지만, 가격 불확실성이 존재할 경우 경제성이 저감되는 것으로 나타났다. 이는 연료전지 발전시설의 도입 및 활성화를 위해서 수입과 비용을 포함하는 종합적인 수익구조 개선 외에도 정책적 지원이 추가적으로 필요함을 시사한다.

• 에너지공학
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• 제22권1호
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• pp.17-27
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• 2013

국내 전력시장은 포화상태로 해외시장 개척을 통해 국내 전력산업의 한계를 극복하기 위한 방안을 모색하려 한다. 해외 전력시장에서 우리나라의 전력산업이 경쟁력을 갖추고 지속적인 성장을 추구하기 위해서 해외시장에 적극적인 투자를 추진하고 있다. 이에 본 논문에서는 여러 전력산업에서 가장 대표적인 화력발전 중 석탄화력발전의 해외수출이 국내 경제에 미치는 파급효과를 분석하고자 한다. 특히 경제적 파급효과로 생산유발효과, 부가가치 유발효과, 취업유발효과의 3가지를 분석하되, 수요유도형 모형을 적용한 분석 결과를 제시한다. 한국은행 산업연관표 통합소분류 기준 168부문 중에서 17개부문을 석탄화력발전 관련 부문이라 정의한 후, 석탄화력발전 관련 산업을 중심에 놓고 이를 외생화하여 분석한다. 과거 석탄화력발전 수출 사례를 적용하여 석탄화력발전 해외수출의 경제적 파급효과를 분석한다. 석탄화력발전 해외수출의 생산유발효과, 부가가치 유발효과, 취업유발효과는 각각 28,525억원, 9,725억원, 14,761명으로 분석되었다.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2006년도 추계학술발표대회 논문집
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• pp.223-226
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• 2006

Fields of domestic construction supervision are divided into architecture, electricity, information and communication and fire by the individual laws. Between each supervision are lack of relationship. So it bring about performance degradation, supervision fee increasing and dispute. The purpose of this basic research is to suggest the integration method of each supervision.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2004년도 춘계학술대회 논문집
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• pp.231-234
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• 2004

Ratio that robot occupies is low level worldwide fairly in suspension wire, electricity electron and neutralization learning industry and domestic industry of this is staring in average love. Can speak that grafting of robotic machine and neutralization learning industry is high in terms of side of creation of the added value or progress of technology rightly hereupon. This research raises or designed multi-function handling robot that can make welding, assembly conveniently catching large size work water

• 한국농공학회:학술대회논문집
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• 한국농공학회 1999년도 Proceedings of the 1999 Annual Conference The Korean Society of Agricutural Engineers
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• pp.550-555
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• 1999

yongdam multipurpose is under construction to divert a part fo Geum riverlfow to Mankyung watershed and to supply the domestic water to the Chunju region and produce the hydro-electricity. Generally construction of dam by the method of inther-region water transfer affects the quantity and quality of water inthe down streams and reservoirs. The impact of operation plan of Yondgam dam on the quantity and quality of water in the Guem river and Daechung dam was investigated .It was recommended that the discharge of water transfer from one watershed to another should be minimized as much as possible.

• 전자통신동향분석
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• 제35권6호
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• pp.97-106
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• 2020

This article explains domestic and overseas technology trends as well as an energy trading architecture model that can safely execute energy power trading through blockchain in the community. There is a way to trade energy between homes as well as between homes and the public in the community, but there are currently no institutions that make this possible. However, our aim is to approach these power trading methods collectively through global technology related to blockchain. We try to solve the problems of energy trading using the blockchain technique. We discuss domestic and overseas technology trends in power trading using blockchain and introduce the power trading architecture for the community proposed by ETRI. We propose a framework that supports reliability and interoperability based on blockchain and develop scalable technology capable of supporting not only small-scale electricity trading but also medium-scale power trading.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 추계학술대회 논문집 전력기술부문
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• pp.51-53
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• 2007

The nuclear power plant uses the steam which occurs from reactor and T/G the drive. By the T/G in consequence of the fact that the electricity which is produced the power and supplies in transmission system. But, recently the transmission and generation system are placed under deregulation situation from domestic and foreign, the maintenance control is difficult with the accident or the breakdown which relates is increasing. Hereupon, considering for effect to the reactor core against trip element which it does apply a probability concept from the NRC of the United States and it study and the recognition for the importance of the switchyard which is a power equipment which will be revaluated. Hereupon using the American example, the reliability establishment method which is suitable in domestic and it searches it does.

• 전기학회논문지
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• 제59권10호
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• pp.1787-1791
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• 2010

This paper presents the survey results of the interruption on domestic customer, especially commercial, with primary focus on the cost are presented. General method utilized in quantifying the benefit of reliability on power system is to estimate the Customer Interruption Cost(CIC) associated with the electric service interruption. According to change the circumstance of electricity market by the deregulation and the introduction of new technology, reliable and accurate CIC is required for estimate the applied plan and technology under the circumstance. This paper presents the commercial customer interruption cost is estimated by the survey conducted by KEPCO in 2009. To collect the customer interruption data for calculation of CIC, the survey is conducted. The survey targeting commercial customer around the branch-offices under twelve regional headquarters of KEPCO was carried out.

• 한국태양에너지학회 논문집
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• 제39권4호
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• pp.79-91
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• 2019

The capacity credit (CC) is a key metric for mid- to long-term power system capacity planning. The purpose of this study is to estimate the CCs of domestic wind turbines. Based on hourly capacity factor (CF) data during the seven years from 2011 to 2017, the new so-called probabilistic CF scheme is introduced to effectively reflect the variability of CFs on CC estimation. The CCs are then estimated through the CF-based method and the ELCC (Effective Load Carrying Capability) method reflecting the probabilistic CF scheme, and the results are compared. The results show that the CC value 0.019 for domestic wind turbines proposed in the $8^{th}$ Basic Plan for Electricity Supply and Demand corresponds to the CC with a confidence level slightly lower than 95%.