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이현구(Hyungoo Lee),손홍관(Hongkwan Sohn),하태현(Taehyun Ha),이성준(Seongjoon Lee),김대경(Daekyeong Kim),배정효(Jeonghyo Bae) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
The increase in oil prices and the rising environmental concerns are boost the electric vehicle supply. Vehicle manufactures understand this trend quite well and plan to increase the production of electric vehicle(EV) such as Toyota PRIUS, Nissan LEAF and GM VOLT etc.. The growth of intermittent renewable energy sources such as solar and wind power requires utilities to find additional grid coupled energy storage and regulation capacity. EVs have a battery pack and a charger. The charger can be able to deliver power back to the grid from the vehicle’s battery as well as charge the battery. The concept of deploying EVs to stabilize the electric power grid is generally referred to as Vehicle-to-Grid(V2G). We present the state of V2G technology and demonstrations.
이성준(Seongjoon Lee),손홍관(Hongkwan Son),하태현(Taehyun Ha),이현구(Hyungoo Lee),김대경(Daekyeong Kim),배정효(Junghyo Bae) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
We will propose the integrated management system for Electric Vehicle Charging Stands. They are controlled by a remote monitoring server. All informations transferred by charging stands are stored in the database, and are used for Analysis. By using the accumulated data, the proposed system can predict the amount of electricity. Users can read various reports using the web browser. Also, the proposed system can be employed in V2G due to bidirectional communication ability and remote control ability.
이재덕(Lee JaeDuck),류희석(Ryoo HeeSuk),최상봉(Choi SangBong),남기영(Nam KeeYoung),정성환(Jeong SeongHwan),김대경(Kim DaeKyeong) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
To reduce inference of any power delivery failures in underground power cable, power system operators are trying to find effective way of finding fault location as soon as possible. But it is very difficult to find fault location exactly for underground power cable. We are developing fault location system for underground power cable which can detect its fault location exactly. This new system monitors current and voltage of underground power cable by using low voltage and current sensors and if there are any accidents, it records its transient signal. Fault location is calculated by analyzing recorded signal. To develop fault location system for power cable, we needed fault simulation system and we installed it physically and tested at various point. In this papers, we describe on design of fault location system for underground power cable
IEC60364-4-44의 국내 배전계통 적용을 위한 실증시험
남기영(Nam Keeyoung),최상봉(CHoi Sangbong),정성환(Jeong Seongwhan),이재덕(Lee Jaeduck),류희석(Ryoo Heesuk),김대경(Kim Daekyeong) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
The authors have studied on the application of IEC 60364-4-44 to Korean electrical installations of buildings from 2004 sponsored by Korean ministry of commerce, industry and energy and the test field is established in K.E.R.I. (Korea Electrotechnology Research Institute). This paper presents the summary results of establishment of test field and analysis for the application of IEC 60364 in Korea. IEC 60364-4-44 provides rules for the protection against the effects of conducted and radiated disturbances on electrical installations. Especially this standard deals with the protection of low voltage facility against the ground fault in the high voltage side of power distribution system. Many countries define the regulations on the use and production of electrical facilities based on their own power system and technical references which are considered to be suitable for them. The background of circuit of IEC 60364-4-44 is based on the ungrounded system as most of European countries. However, since Korean electric power distribution system is based on multi-grounding system different from European system, it is necessary to evaluate or prove the effect of the IEC 60364-4-44 for introducing and applying it to the domestic grounding system as a Korean standard. This paper presents the establishment of test field to get background data to introduce the IEC 60364-4-44and to evaluate the standard is applicable to domestic rule for the protection against ground fault through the related test.