• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 하계학술대회 논문집 E
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• pp.1574-1577
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• 1998

• 진공이야기
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• 제3권4호
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• pp.14-18
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• 2016

본 원고에서는 2010년대 중반 현재 초고진공 환경에서 작동 가능한 저온 주사터널 현미경의 세계적 흐름을 정리 및 소개를 한다. 벡터형 초전도 자석을 장착한, 저진동 초고진공용 희석식 냉동기의 개발에 힘입어 수십 밀리 켈빈 이하의 온도 대 및 10 테슬라의 고자기장하의 실험 조건을 가지는 밀리 켈빈 주사터널 현미경이 세계 선도 그룹에서 속속 구축이 완료되고 있다. 또한 2000년대 중반 이후 본격적으로 시작된 1 켈빈 이하 고자기장 냉동기를 이용한 저온 주사 터널 현미경의 응용 범위 역시 넓어지고 있다. 튜닝 포크를 이용한 저온 원자 힘 현미경 및 저온 광자 주사터널 현미경을 이용한 연구도 활발히 진행되고 있다. 이러한 논의를 바탕으로 2020년대에 본격 출현할 초고진공 저온 주사터널 현미경의 흐름을 예측해 보겠다.

• 한국진공학회지
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• 제2권2호
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• pp.255-260
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• 1993

$Si_3N_4$와 $SiO_2$ 박막을 고순도로 생장시키기 위하여 UHV-LCVD 장치를 제작하였다. 이 장치는 CVD 반응실, 시료주입 장치, 가스주입 장치, 광여기를 위한 레이저 창, 질량분석 장치로 구성되어 있다. UHV-LCVD는 low pressure, low vacuum CVD에 비해 제작상의 어려움이 따르나 초고진공 분위깅에서 반응 가스의 양을 정확히 조절하여 고순도의 박막을 제잘할 수 있었다.

• 전기의세계
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• 제32권12호
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• pp.723-729
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• 1983

본고의 내용은 다음과 같다. 1. 해외UHV송전계획 및 연구현황 2. UHV직류송전 3. 극저온, 초전도, 6상송전방식

• 한국진공학회:학술대회논문집
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• 한국진공학회 2011년도 제40회 동계학술대회 초록집
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• pp.329-329
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• 2011

We investigated the thin films of poly(3-hexylthiophene) (P3HT) and C61-butyric acid methylester (PCBM) prepared by ultrahigh vacuum (UHV) electrospray depositioin (ESD) by using in-situ XPS, UPS and ambient-pressure AFM. The morphology, chemical structures, and interface properties of these materials, most widely used for bulk heterojunction organic solar cells, were studied depending on the ESD solution compositions and concentrations. We found that the solution conductivity and flow rate as well as applied voltage are the important parameters for stable electrospray and film formation. These results suggest that UHV ESD is a viable method for the deposition of multilayers of polymers under UHV condition. We also discuss the energy level alignment for the various deposition conditions at the interface, which is one of the most important operating parameters of the bulk heterojunction organic solar cells.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1996년도 하계학술대회 논문집 C
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• pp.1920-1922
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• 1996

After determining the type and string condition of conductor of 765kV transmission lines, we studied the mechanical strength system of insulator strings to support conductors and insulate conductors from towers. In this paper, for the insulator strings which will be used in 765kV transmission lines, we're going to optimally determine the mechanical strength system and supporting method in the consideration of the reliability, economics and the survey data of T/L routes, and also suggest the calculation method to stipulate for the application limits of suspension and strain insulator strings according to the loadspan and height difference of tower.

• Journal of Electrical Engineering and Technology
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• 제10권3호
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• pp.1293-1297
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• 2015

This paper introduces the insulation coordination study results for UHV AC systems which was performed by CIGRE working group. The study results will be discussed within IEC technical committee in order to amend the IEC Insulation Coordination 60071-1 Ed. 8 2010 and 60071-2 Ed. 3, 1996. This paper includes the insulation coordination of transformer, gas insulated switchgear, metal oxide arresters and clearances of transmission towers. This article also illustrates the overvoltage specific to UHV systems such as TOV(temporary overvoltage), switching overvoltage, lightning overvoltage and VFTO(very fast transient overvoltage).

• 대한전기학회:학술대회논문집
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• 대한전기학회 1994년도 하계학술대회 논문집 C
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• pp.1553-1555
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• 1994

In this paper, we describes the research in condenser cone of $SF_6$ gas sealing end for 345KV oil-filled cable. The designed of condenser cone based on the results electric field analysis by electrostatics theory ana FEM. As a results. we have been designed the condenser cone and the inner insulation part of $SF_6$ seating end, the width and length, the number of condenser, the length of stress relief slope, the total length of condenser cone.

• 한국세라믹학회:학술대회논문집
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• 한국세라믹학회 2003년도 추계총회 및 연구발표회 초록집
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• pp.195.2-195
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• 2003

• Journal of Electrical Engineering and Technology
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• 제9권6호
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• pp.2089-2097
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• 2014

Negative corona onset characteristics of the stranded conductors based on the ultra-high voltage (UHV) corona cage were studied in the paper. Based on the corona self-sustaining criterion in extreme uneven electric fields and the secondary emission process of the photoelectrons, the corona onset calculation model in the UHV corona cage is established and the corona current tests of the single LGJ900-75, 6 bundle LGJ900-75, 8 bundle LGJ400-35 conductors in dry and rain conditions were done in the UHV corona cage, and the rain rates are 2.4 mm/h, 20 mm/h and 30 mm/h. Corona onset electric field strength is gained by E-I tangent method, and the onset electric field strength in dry condition proves that the calculation model can be used to calculate the corona onset characteristics of the bundle conductors in the UHV corona cage. A further analysis proves that: the negative corona onset voltage of the conductor increases with the bundle number and the diameter of the sub conductor, but decreases with the bundle space in the corona cage. The onset electric field strength is influenced little by bundle space and bundle number, but decreases with the increase of the diameter of the sub-conductor. The surface irregularity coefficient decreases with the rain rate.