KEPCO Journal on electric power and energy最新文献_第6页

Synthesis of the Raw Materials of Polycarbonate and Polyurethane by CO 2 Chemical Utilization co2化学利用合成聚碳酸酯和聚氨酯原料

KEPCO Journal on electric power and energy Pub Date : 2016-06-30 DOI: 10.18770/KEPCO.2016.02.02.187

Jun-Hyeon Baek

引用次数: 0

Experimental Study for Gate Trap and Generation Current using DCIV Method DCIV法栅极陷阱及产生电流的实验研究

KEPCO Journal on electric power and energy Pub Date : 2016-06-30 DOI: 10.18770/KEPCO.2016.02.02.223

Young Kwon Kim, D. B. Lee, Won Hyeok Choi, Taesik Park, Myoung Jin Lee

引用次数: 0

Study on Emerging Technologies in Electric Power Industry 电力工业新兴技术研究

KEPCO Journal on electric power and energy Pub Date : 2016-06-30 DOI: 10.18770/KEPCO.2016.02.02.317

Sooman Park

{"title":"Study on Emerging Technologies in Electric Power Industry","authors":"Sooman Park","doi":"10.18770/KEPCO.2016.02.02.317","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.02.317","url":null,"abstract":"In recent years, the U.S, Japan, Europe and other developed countries are strategically developing technologies in order to prepare for paradigm shift affecting the electric power industry in a preemptive way. In particular, a chance for new business models and innovation in the electric power industry would rapidly increase with convergence of various technologies including Information and communication technologies. This study gathered up the theories and methodologies, and sorted out emerging technologies for the electric power industry with those theories. In order to find the emerging technologies, first, we identified the possible key issues of the electric power industry in the future using four mining techniques such as STEEP. Second, we drew agenda related with each key issue. Third, we organized candidates of the emerging technologies for solving the agenda and set the priority after evaluating the possibility of technical innovation and business. Finally, we selected the top fourteen of emerging technologies and assessed their feasibility. This study has a methodological significance because the emerging technologies were developed with a market-oriented approach rather than technical-push one that has been primarily used in another studies. The results of this study are able to be used in establishment of technology policy and R&D planning in the electric power industry.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121466731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laminar Burning Velocities of Atmospheric Coal Air Mixtures 大气煤-空气混合物的层流燃烧速度

KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.089

H. Park, Y. Park

{"title":"Laminar Burning Velocities of Atmospheric Coal Air Mixtures","authors":"H. Park, Y. Park","doi":"10.18770/KEPCO.2016.02.01.089","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.01.089","url":null,"abstract":"Abstract The mechanism for laminar dust flame propagation can only be elucidated from a comprehensive mathematical model which incorporates conduction and radiation, as well as the chemical kinetics of particle devolatilization and gas phase and char rea ction. The mathematical model for a flat, laminar, premixed coal-air flame is applied to the atmospheric coal-air mixtures studied by Smoot and co-workers, and comparisons are made with their measurements and predictions. Here the principal parameter for comparison is the laminar burning velocity. The studies of Smoot and co-workers are first reviewed and compared with those predicted by the present model. The effects of inlet temperature and devolatilization rate constants on the burning velocities are studied with the present model, and compared with their measurements and predictions. Their m easured burning velocities are approximately predicted with the pr esent model at relatively high coal concentrations, with a somewhat increased inlet temperature. From the comparisons, their model might over-estimate particle temperature and rates of devolatilization. This would enable coal-air mixtures to be burned without any form of preheat and would tend to increase their computed values of burning velocity.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126529363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Study on Market Prospects, Financing Challenges and Alternative Solutions in New Nuclear Power Projects 新核电项目的市场前景、融资挑战及替代方案研究

KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.133

Janghun Lee

引用次数: 0

Hydrothermally Synthesis Nanostructure ZnO Thin Film for Photocatalysis Application 水热合成用于光催化的纳米结构ZnO薄膜

KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.097

N. Shinde, Min Sik Nam, U. Patil, S. Jun

{"title":"Hydrothermally Synthesis Nanostructure ZnO Thin Film for Photocatalysis Application","authors":"N. Shinde, Min Sik Nam, U. Patil, S. Jun","doi":"10.18770/KEPCO.2016.02.01.097","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.01.097","url":null,"abstract":"ZnO has nanostructured material because of unique properties suitable for various applications. Amongst all chemical and physics methods of synthesis of ZnO nanostructure, the hydrothermal method is attractive for its simplicity and environment friendly condition. Nanostructure ZnO thin films have been successfully synthesized on fluorine doped tin oxide (FTO) substrate using hydrothermal method. A possible growth mechanism of the various nanostructures ZnO is discussed in schematics. The prepared materials were characterized by standard analytical techniques, i.e., X-ray diffraction (XRD) and Field-emission scanning electron microscopy (SEM). The XRD study showed that the obtained ZnO nanostructure thin films are in crystalline nature with hexagonal wurtzite phase. The SEM image shows substrate surface covered with nanostructure ZnO nanrod. The UV-vis absorption spectrum of the synthesized nanostructure ZnO shows a strong excitonic absorption band at 365 nm which indicate formation nanostructure ZnO thin film. Photoluminescence spectra illustrated two emission peaks, with the first one at 424 nm due to the band edge emission of ZnO and the second broad peak centered around 500 nm possibly due to oxygen vacancies in nanostructure ZnO. The Raman measurements peaks observed at , , and indicated that nanostrusture ZnO thin film is high crystalline quality. We trust that nanostructure ZnO material can be effectively will be used as a highly active and stable phtocatalysis application.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128209979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Study on Using Large-Scale Energy Storage Systems in Automatic Generation Control Operations of the Energy Management Systems 大型储能系统在能源管理系统自动发电控制运行中的应用研究

KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.121

Ji-Hoon Im, Gun-Pyo Lim, Chan-Wook Park, Yohan Choi, Seung-Hwan Kim, B. Chang

引用次数: 0

Functional Properties of Stand-alone Microgrid EMS Application 单机微电网EMS应用的功能特性

KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.115

Halim Lee, Y. Chun, W. Chae, Jungsung Park

{"title":"Functional Properties of Stand-alone Microgrid EMS Application","authors":"Halim Lee, Y. Chun, W. Chae, Jungsung Park","doi":"10.18770/KEPCO.2016.02.01.115","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.01.115","url":null,"abstract":"For many past years, research in the operation of stand-alone Microgrid, which provides electric power generated from renewable energy sources and energy storage system instead of diesel generators, has been a major issue in order to prepare the exhaustion of fossil fuel and to protect environment, in island grids. Samso Island, known as the world’s first stand-alone Microgrid in Denmark, is connected to the mainland grid through AC system, which has different technical conditions with Korea’s isolated power system. Korea’s first stand-alone Microgrid has been built in Ga-sa island, Chun-la-nam-do, based on Energy Management System (EMS) operation, and other islands are under construction to follow the next step. These stand-alone Microgrid’s has large capacity of Battery Energy Storage System (BESS) and the proportion of the renewable energy sources are large, which makes it necessary to use a Microgrid-Energy Management System (MG-EMS) to operate the grid effectively and economically. However, since the main subject of MG-EMS is different from EMS, specific characteristics and functions must be different as well. In this paper, the necessary characteristics and functions are explained for a general MG-EMS compared to a large power system EMS.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125133345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Process Improvement and Evaluation of 0.1 MW-scale Test Bed using Amine Solvent for Post-combustion CO 2 Capture 0.1 mw氨溶剂燃烧后co2捕集试验台工艺改进与评价

KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.103

Jong Min Park, S. P. Cho, T. Lim, Young Taek Lee

引用次数: 0

A Study on Optimal Configuration Method of Hybrid ESS using Lead-acid and Lithium-ion Batteries for Supply of Variation Loads 多变负荷下铅酸锂电池混合ESS优化配置方法研究

KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.049

Dea-seok Rho, Seong-sik Choi, Hu-Dong Lee, B. Chang, Su-yeol Kim

{"title":"A Study on Optimal Configuration Method of Hybrid ESS using Lead-acid and Lithium-ion Batteries for Supply of Variation Loads","authors":"Dea-seok Rho, Seong-sik Choi, Hu-Dong Lee, B. Chang, Su-yeol Kim","doi":"10.18770/KEPCO.2016.02.01.049","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.01.049","url":null,"abstract":"The large scaled lead-acid battery is widely used for efficient operation of the photovoltaic system in many islands. However, lithium-ion battery is now being introduced to mitigate the fluctuation of wind power and to replace lead-acid battery. Therefore, hybrid ESS (Energy Storage system) that combines lithium-ion battery with lead-acid battery is being required because lithium-ion battery is costly in present stage. Under this circumstance, this paper presents the optimal algorithm to create composition rate of hybrid ESS by considering fixed and variable costs in order to maximize advantage of each battery. With minimization of total cost including fixed and variable costs, the optimal composition rate can be calculated based on the various scenarios such as load variation, life cycle and cost trend. From simulation results, it is confirmed that the proposed algorithms are an effective tool to produce a optimal composition rate. 현재 대부분의 도서지역에서는 태양광발전을 효율적으로 운용하기 위하여 대용량 연축전지가 많이 사용되고 있 지만, 풍력발전의 도입, 축전지 교체로 인하여 리튬이온전지의 도입이 증가하고 있다. 따라서 본 논문에서는 기존에 많이 보급되어 사용되고 있는 연축전지와 리튬이온전지의 장점을 최대한 활용하기 위하여, 연축전지와 리튬이온전지 용 하이브리드 ESS의 최적 운용평가를 할 수 있는 알고리즘을 제시하였다. 상기의 알고리즘을 이용하여 시뮬레이션 을 수행한 결과, 각 전지의 도입비용과 운용비용이 최소화 되는 운용조건에서 최적구성비를 산출하였다. 이에 따라 본 논문에서 제안한 하이브리드 ESS의 최적구성 알고리즘에 대한 유용성을 확인하였다.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115788494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0