• 한국가스학회:학술대회논문집
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• 2001.10a
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• pp.108-113
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• 2001

• 한국지구물리탐사학회:학술대회논문집
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• 2006.06a
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• pp.113-116
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• 2006

Successful field test results for detection of buried undersea HVDC by magnetic vector measurements are discussed. Further study will be focused on practical utilization.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.16 no.5
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• pp.395-402
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• 1991

Submarine Optical Fiber Cable Link becomes a major transmission madi a in many countries and Continents thanks to development of low attenuation fiber and its capability of carryung broadband data. United States of America and Japan are aggressively planning to construct international submarine optical fiber links in North-East Asia. But the links do not connect Korea and Korea becomes isolated in the international communication network. This paper shows a strategy on submarine optical fibre cable links that make Korea a HUB station in North East As a without heavy investment.

• Journal of Navigation and Port Research
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• v.39 no.6
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• pp.539-544
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• 2015

There is drift toward moving offshore structures operating sites to deep water that brings subsea systems and types of apparatus to meet more severe environment than onshore. At this moment, climatic condition and seabed state affect trenching efficiency so trenching process is need to make steady progress in a short time. This paper is research on estimation about construction performance of waterjet trenching machine mounted on ROV trencher. Optimal number of nozzles that can maximize trenching efficiency is selected by considering clearance and angle of nozzles through CFD. Then verified effectiveness of waterjet apparatus on the result of trenching depth and velocity by model test analogized performance for construction work of waterjet trenching machine.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.31 no.6
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• pp.478-484
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• 2019

The submarine cable for Yongsu wave power plant was cut in 2014 winter. This study investigated the probability of high-wave occurrence exceeding the 50-year return period and the underestimation of armor unit weight used to protect the cable. The observation data from KMA buoy and the hindcast wave data were reviewed to determine the return period of wave height during the winter. In order to investigate the armor unit weight of cable-protection, we calculated the required weight of armor unit using not only Design Standard for Harbor and Fishery Port, but also the previous researches for the wave with large incident angle. As a result, it appeared that the high wave exceeding the 50-year return period did not occur during the winter of 2014 and the armor unit weight of the cable protection was not sufficient to sustain the obliquely incident wave, which induced the cable protection failure.

• Journal of Scientific & Technological Knowledge Infrastructure
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• s.11
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• pp.56-67
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• 2002

정보실크로드의 구축방안으로는 북한 위성궤도의 남북공동 이용, 한반도를 관통하는 국제 해저 광 케이블과 인터넷망 구축, 정보시스템 표준의 공유화 등이다. 이를 통해 언어와 문자 및 전통문화에 기반을 둔 특화 사업의 세계화 방안, 틈새시장과 선점효과를 위한 공동대응등을 생각할 수가 있다.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2015.11a
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• pp.265-269
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• 2015

우리나라 남해안과 제주도, 그리고 일본, 중국, 대만, 홍콩 등에 거미줄 처럼 포설된 해저 케이블에 대하여 선박 등에 의한 훼손 가능성을 사전에 감지 차단하는 시스템.

• The Science & Technology
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• v.17 no.12 s.187
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• pp.19-22
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• 1984

레이더가 찾아낸 헤롯의 무덤 / 일본해저 케이블 공사착수 / 생의학연구에 지원금 / 물에 녹는 합금 / 미 과학성 창설 이루어질까? / 코헨-보이어 유전공학특허 마침내 등록 / 다이아몬드의 나이는 30억년 / 물결간섭의 현상을 응용한 엔진 파동없애는 연구

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.1 no.1
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• pp.93-101
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• 1989

A geometrically nonlinear cable finite element is presented to use in the static or dynamic modeling of offshore and onshore structures such as guyed tower, tension leg platform or mooring buoy, submarine cable, cable-stayed bridge, suspension bridge, cable roof and so on. The cable finite element is derived directly from the compatibility equations and flexibility matrix of elastic catenary cable theory for the arbitary plane loading and geome try. A general and virsatile computer program has been developed to perform the analyses of cable member itself or cable guyed or suspened structures, in which Newmark-$\beta$ method is used to obtain a time domain solution and Newton-Raphson iteration method is used to solve the nonlinear system of compatibility equations of cable and algebraic static or dynamic equations at each time step. The results from the static and dynamic analysis of a cable member by the computer program are summarized and presented.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.454-455
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• 2008

1970년대 이후 반도체 기술의 발달로 싸이리스트 밸브가 기존의 수은방전밸브를 대체 하면서 HVDC 기술이 급격히 향상되고 교류송전에 비해 직류송전이 갖는 여러 가지 이점 때문에 최근 HVDC 송전이 점점 증가하고 있는 추세에 있다. 본 논문에서는 2000년에 발표된 CIGRE 189.의 "800kV급까지의 HVDC 송전케이블의 전기적 평가 권고안"에 준하여, HVDC해저케이블의 전기적 평가를 위한 극성반전시험 및 임펄스 중첩회로를 해석을 통하여 모의하고 전기적 시험회로의 설계 및 구성한 후 평가한 결과에 대해서 설명한다.