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KEPCO Journal on electric power and energy最新文献

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Development Status of MV Cable with Eco-friendly and High Heat Resistance 环保型高耐热中压电缆的发展现状
KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.055
Yeon-ha Jung, Byung-sung Lee, I. Seo, J. Kwon, K. Sohn, Hyung-jun Kim
{"title":"Development Status of MV Cable with Eco-friendly and High Heat Resistance","authors":"Yeon-ha Jung, Byung-sung Lee, I. Seo, J. Kwon, K. Sohn, Hyung-jun Kim","doi":"10.18770/KEPCO.2016.02.01.055","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.01.055","url":null,"abstract":"In Europe, polypropylene-insulated HV class cable with high temperature and no cross-linking was commercialized following the MV class. Our company also started a study of the polypropylene-insulated cable in 2013 and was carried out thermal, physical and electrical test. In addition, polypropylene-insulated cable was tested for compatibility with conventional joints and terminations in emergency condition and the accelerated life test for verifying their design life is in progress. The results of this study will be used to establish a standard specification and operation conditions of the polypropylene-insulated cable.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"48 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":"121643666","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: 2
Customer Load Pattern Analysis using Clustering Techniques 使用聚类技术分析客户负载模式
KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.061
Seunghyoung Ryu, Hongseok Kim, Doeun Oh, Jaekoo No
{"title":"Customer Load Pattern Analysis using Clustering Techniques","authors":"Seunghyoung Ryu, Hongseok Kim, Doeun Oh, Jaekoo No","doi":"10.18770/KEPCO.2016.02.01.061","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.01.061","url":null,"abstract":"","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"59 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":"116019599","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: 9
Study on Application of Reinforcement Device to Provide Greater Dynamic Stability for Power Transmission Towers and its Effect 提高输电塔动力稳定性的加固装置应用及效果研究
KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.033
Kyeong-hyeon Yang, Choon-hee Bae, Nam-geun Jeong, Doo-young Kim, Sungmin Kim, Y. Jang
{"title":"Study on Application of Reinforcement Device to Provide Greater Dynamic Stability for Power Transmission Towers and its Effect","authors":"Kyeong-hyeon Yang, Choon-hee Bae, Nam-geun Jeong, Doo-young Kim, Sungmin Kim, Y. Jang","doi":"10.18770/KEPCO.2016.02.01.033","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.01.033","url":null,"abstract":"To verify that the friction damper used to high buildings as a kind of control technology of wind vibration can reduce dynamic behaviors of PTTs effectively, slip dampers in this paper are proposed to absorb the energy through relatively frictional movement of slip dampers applied to main post of a PTT (Power Transmission Tower) when dynamic displacement of a PTT occurs. The result of dynamic analysis is presented to determine the capacity of the damper system by controlling damping ratio on the resonance condition. It is observed that by installing slip dampers at a PTT the strain amplitudes of the main post caused by wind load are effectively reduced. Therefore it is shown that the proposed damper satisfies the strengthened wind-load design standards, and its efficacy was also validated experimentally by field testing.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"58 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":"114940877","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 for the Message Exchange of the EVSE Communication Controller using XML Schema Transformation 基于XML模式转换的EVSE通信控制器消息交换研究
KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.071
Koaunghi Un, Hyuk-Soo Jang, Myongsoo Kim, Hwimin Kim
{"title":"A Study for the Message Exchange of the EVSE Communication Controller using XML Schema Transformation","authors":"Koaunghi Un, Hyuk-Soo Jang, Myongsoo Kim, Hwimin Kim","doi":"10.18770/KEPCO.2016.02.01.071","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.01.071","url":null,"abstract":"An EVSE and the EV exchange XML formatted communication messages with each other, whose structure is described by the V2G CI schema in the ISO/IEC 15118 international standard, and the EVSE and the power grid exchange messages based on SCL file with each other, whose structure is described by SCL schema in the IEC 61850 international standard. Because XML files can be restructured by XSLT, V2G messages can be transformed to/from SCL files using XSLT. In this study, the two schemas are analyzed and compared in order for the restructuring of the two differently structured XML instances. As a result, two XSL scripts can be produced for the transformation between XML files conforming ISO/IEC 15118 V2G CI schema and IEC 61850 SCL schema respectively to avoid manual data mapping which can happen in every application development cases.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"17 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":"127756752","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 Partial Discharge Diagnostic System for Power Cable using RLCR 基于RLCR的电力电缆局部放电诊断系统研究
KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.043
Kee-Young Park, Hyung-kee Choi, Chul-Hee Lee, Soo-mi Hong
{"title":"A Study on Partial Discharge Diagnostic System for Power Cable using RLCR","authors":"Kee-Young Park, Hyung-kee Choi, Chul-Hee Lee, Soo-mi Hong","doi":"10.18770/KEPCO.2016.02.01.043","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.01.043","url":null,"abstract":"This system is a diagnosis system that checks whether it causes a partial discharge of a power cable or not. It is to classify normal from abnormal-normal, PD (Partial Discharge) sound through analysis of RLCR (Relative Level Crossing Rate) and spectrogram energy algorithm. Partial discharge diagnostic system has a function that stores PD sound and analyzes the data. The wave shape of PD sound is similar to noise and is systematically generated by partial discharge. Therefore, in this paper, we could discreminate between normal and abnormal case using relative level crossing rate (RLCR) and spectrogram of frequency energy rate.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"14 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":"132792318","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: 1
Techno-Economic Study on Non-Capture CO 2 Utilization Technology 非捕集型co2利用技术的技术经济研究
KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.109
J. H. Lee, Dong Woog Lee, No-Sang Kwak, Jung-Hyun Lee, J. Shim
{"title":"Techno-Economic Study on Non-Capture CO 2 Utilization Technology","authors":"J. H. Lee, Dong Woog Lee, No-Sang Kwak, Jung-Hyun Lee, J. Shim","doi":"10.18770/KEPCO.2016.02.01.109","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.01.109","url":null,"abstract":"Techno-economic evaluation of Non-Capture CO2 Utilization (NCCU) technology for the production of high-value-added products using greenhouse gas (CO2) was performed. The general scheme of NCCU process is composed of CO2 carbonation and brine electrolysis process. Through a carbonation reaction with sodium hydroxide that is generated from brine electrolysis and CO2 of the flue gas, it is possible to get high-value-added products such as sodium bicarbonate, sodium hydroxide, hydrogen & chloride and also to reduce the CO2 emission simultaneously. For the techno-economic study on NCCU technology, continuous operation of bench-scale facility which could treat 2 kgCO2/day was performed. and based on the key performance data evaluated, the economic evaluation analysis targeted on the commercial chemical plant, which could treat 6 tons CO2 per day, was performed using the net present value (NPV) metrics. The results showed that the net profit obtained during the whole plant operation was about 7,890 mKRW (million Korean Won) on NPV metrics and annual CO2 reduction was estimated as about 2,000 tCO2. Also it was found that the energy consumption of brine electrolysis is one of the key factors which affect the plant operation cost (ex. electricity consumption) and the net profit of the plant. Based on these results, it could be deduced that NCCU technology of this study could be one of the cost-effective CO2 utilization technology options.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"96 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":"122190230","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: 1
Plant Minimum Stable Load (Pmin) Test for Ilijan CCPP Ilijan CCPP厂最小稳定负荷(Pmin)试验
KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.083
Sidet Kim, W. Yun, Cheol-Ho Jang, Se Ik Park
{"title":"Plant Minimum Stable Load (Pmin) Test for Ilijan CCPP","authors":"Sidet Kim, W. Yun, Cheol-Ho Jang, Se Ik Park","doi":"10.18770/KEPCO.2016.02.01.083","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.01.083","url":null,"abstract":"This paper describes the test results of plant minimum stable load (Pmin) for Ilijan Power Plant. The test was conducted on May 13 through 14, 2015 to investigate the plant operating and equipment condition in accordance with “Ilijan Plant Performance Test Procedure on Plant Minimum Stable Load” [1]. This paper also contains the assessment of the impact of Pmin to plant operating parameters and possible technical operating issues when operating at lower loads and to recommend the safe minimum load operation of Ilijan per block. In addition, this paper describes the performance calculation results of efficiency and heat rate depending on the load level.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"63 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":"128018816","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
The Effect of sGO Content in sPEEK/sGO Composite Membrane for Unitized Regenerative Fuel Cell sPEEK/sGO复合膜中sGO含量对一体化再生燃料电池的影响
KEPCO Journal on electric power and energy Pub Date : 2016-03-30 DOI: 10.18770/KEPCO.2016.02.01.127
Ho‐Young Jung, Min‐Woo Kim, Jinho Lim, J. Choi, S. Roh
{"title":"The Effect of sGO Content in sPEEK/sGO Composite Membrane for Unitized Regenerative Fuel Cell","authors":"Ho‐Young Jung, Min‐Woo Kim, Jinho Lim, J. Choi, S. Roh","doi":"10.18770/KEPCO.2016.02.01.127","DOIUrl":"https://doi.org/10.18770/KEPCO.2016.02.01.127","url":null,"abstract":"Abstract Polymer electrolyte membrane for unitized regenerative fuel cells requires high proton conductivity, high dimensional stability, low permeability, and low cost. However, DuPo nt’s Nafion which is a commercial polymer electrolyte membrane has high permeabili ty, high cost, and decreasing proton conductivity and dimensional stability over 80°C. To address these problems, sulfonated poly ether ether ketone (sPEEK) which is a low cost hydrocarbon polymer is selected as matrix polymer for the preparation of polymer elect rolyte membrane. In addition, composite membrane with improved proton conductivity and dimensional stability is prepared by introducing sulfonated graphene oxide (sGO). The fundamental properties of polymer electrolyte membranes are analyzed by investigating membrane’s water content, dimensional stability, proton conductivity, and morphology. The cell test is conducted to consider the possibility of application of sPEEK/sGO composite membrane for an unitized regenerative fuel cell.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"43 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":"132156677","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: 2
Study on DAS-Based Time Synchronization for Improving Reliability of Section Load Estimation 基于das的时间同步提高分段负荷估计可靠性的研究
KEPCO Journal on electric power and energy Pub Date : 2015-09-30 DOI: 10.18770/KEPCO.2015.01.01.061
In-tae Lee, Ji-Hoon Lee, Nam-Joon Jung, Young-beom Jung, Byung-sung Lee
{"title":"Study on DAS-Based Time Synchronization for Improving Reliability of Section Load Estimation","authors":"In-tae Lee, Ji-Hoon Lee, Nam-Joon Jung, Young-beom Jung, Byung-sung Lee","doi":"10.18770/KEPCO.2015.01.01.061","DOIUrl":"https://doi.org/10.18770/KEPCO.2015.01.01.061","url":null,"abstract":"Abstract For effective distribution planning and operation, we need a reliable estimation of operation capacity. But it is difficult to ensure reliability due to the low accuracy of section load data, which is used as a basis in estimating the operation capacity. This paper discusses how to improve the accuracy of section load data by analyzing the existing method of estimating the section load, using statistical techniques to adjust the acquired data, and using the section load estimation algorithm to estimate the section load based on the adjusted data. Keywords : DAS, time synchronization, section load, estimation reliability I. INTRODUCTION It is essential to estimate the section load correctly considering the actual status of the line for distribution planning and operation. The existing method of estimating the section load data based on the distribution automation system is not correct and so it is only used for reference in operating the actual distribution systems. The data is not correct, because the useful voltage data is not acquired from the distribution switch and also because the current data is not time-synchronized at the switch and there are some missing data sections.This paper discusses how to improve the accuracy of section load data by analyzing the existing method of using the distribution automation system to estimate the section load and identify problems, using statistical techniques to adjust the acquired data, and using the section load estimation algorithm to estimate the section load based on the adjusted data [1].","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125496049","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
Study on Operating Guidelines of Electric Vehicles considering Negawatt Market 考虑负瓦特市场的电动汽车运行指南研究
KEPCO Journal on electric power and energy Pub Date : 2015-09-30 DOI: 10.18770/KEPCO.2015.01.01.067
Ken-Mo Yang, Dong-Min Kim
{"title":"Study on Operating Guidelines of Electric Vehicles considering Negawatt Market","authors":"Ken-Mo Yang, Dong-Min Kim","doi":"10.18770/KEPCO.2015.01.01.067","DOIUrl":"https://doi.org/10.18770/KEPCO.2015.01.01.067","url":null,"abstract":"The concept known as Vehicle-to-Grid (V2G) is to provide power to help balance loads by charging at night when demand is low and sending power to the grid when demand is high. Therefore, it is important to model the cost-benefit characteristics of Electric vehicle(EV)’s operation considering the negawatt market in real time. This paper proposes a methodology to formulate the various costs and economic benefits for sending the EV’s power back to the grid, including a concept of inconvenience costs caused by operating the EV as a battery. This paper also introduces the general decision-making process based on the cost-benefit analysis in order to simulate the reasonable participation of V2G service. In the case study, it is confirmed by two-case simulations that the proposed approach is useful to help EV owners’ decision-making. In the future, it is expected that the proposed methodology can be used as a decision-making guideline to help prepare the EV’ power transmission.","PeriodicalId":445819,"journal":{"name":"KEPCO Journal on electric power and energy","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128170741","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
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