• JOURNAL OF ELECTRICAL WORLD
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• s.408
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• pp.94-99
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• 2010

• Korean Architects
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• s.501
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• pp.62-65
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• 2011

• Environmental engineer
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• v.23 s.237
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• pp.72-75
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• 2006

• The Science & Technology
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• v.34 no.2 s.381
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• pp.22-23
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• 2001

97년에 출범한 피엘콜(www.plcom.co.kr)은 국내 최초로 10Mbps속도의 전력선통신(PLC)의 기술을 개발하여 PLC의 상용화에 새로운 전기를 마련한 벤처기업이다. 특히 피엘콤의 PLC기술은 홈네트워크ㆍ홈오토메이션ㆍ정보가전 등 다양한 산업분야에 활용할 수 있는 장점이 있다. 이 회사의 김승돌 대표는 "현재 추진중인 말레이시아 등 각국의 전력선 통신사업과 20Mbps급 PLC기술개발에 박차를 가하고 있다"고 한다.

• Geophysics and Geophysical Exploration
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• v.27 no.1
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• pp.57-68
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• 2024

Offshore wind power is increasingly regarded as a viable solution for reducing greenhous emissions due to the construction of wind farms and their superior power generation efficiency. Submarine power cables play a crucial role in transmitting the electricity generated offshore to land. To monitor cables and identify points of failure, analyzing the location or depth of burial of submarine cables is necessary. This study reviewed the technology and research for detecting submarine power cables, which were categorized into seismic/acoustic, electromagnetic, and magnetic exploration. Seismic/acoustic waves are primarily used for detecting submarine power cables by installing equipment on ships. Electromagnetic and magnetic exploration detects cables by installing equipment on unmanned underwater vehicles, including autonomous underwater vehicles (AUV) and remotely operated vihicles (ROV). This study serves as a foundational resource in the field of submarine power cable detection.

• Nuclear industry
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• v.22 no.1 s.227
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• pp.47-50
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• 2002

• 한국IT서비스학회:학술대회논문집
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• 2008.05a
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• pp.483-488
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• 2008

현대의 제 기술 시스템, 특히 IT 시스템의 서비스의 운용은 전기에너지와 불가분의 관계에 있다. 주요 IT 시스템 일수록 전기의 안정적인 공급을 위해 무정전전원 장치(UPS)를 두고 있다. 그러나 UPS는 상용전원(commercial power)에 문제가 생겼을 때 작동하지 않는 사례가 많이 보고되고 있으며 이로 인해 해당 기업 혹은 기관에서는 설비 및 데이터의 손상과 서비스의 중단으로 인해 기업브랜드 가치 손상과 많은 복구비용을 부담하게 된다. 본 논문에서는 UPS 및 정류기 등에 예비전력으로 사용되는 산업용 고정형 축전지설비에 대한 서비스의 배경, 축전지 관리, 도입 효과를 기술하고 이를 IT 서비스화 하는 것에 대해 기술한다. 또한 축전지설비 진단 기술 및 예비전력 관리시스템 설계 시 고려사항에 대해 기술하고 예비전력관리에 관한 시장, 사업모델, 향후 전망 그리고 시장활성화 방안에 대해서 제안한다.

• Journal of Wind Energy
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• v.15 no.1
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• pp.30-42
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• 2024

This paper examines the design feasibility of cage aquaculture coexistent with an offshore wind farm in the southwestern sea of South Korea. Among the many types of fish farms, 2 × 3 cage aquaculture was selected for the investigation and the initial design including mooring lines, bridles, etc. was drawn with iterative numerical simulations using Orcaflex. Experimental campaigns were conducted to validate the numerical results, and they were found to be in good agreement with the experiments. Using a validated numerical model, the tension of mooring lines and the deformed volumes of the facility were examined under given operating and survival conditions. The validated model will be further used to investigate various aspects of the cage farm design for design optimization.

• Transactions of the Korean Society of Pressure Vessels and Piping
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• v.19 no.2
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• pp.146-154
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• 2023

In nuclear power plants, ultrasonic test for pipe wall thickness measurement is used during periodic inspections to prevent pipe rupture due to pipe wall thinning. However, when measuring pipe wall thickness using ultrasonic test, a significant amount of measurement error occurs due to the on-site conditions of the nuclear power plant. If the maximum pipe wall thinning rate is decided by the measured pipe wall thickness containing a significant error, the pipe wall thinning rate data have significant uncertainty and systematic overestimation. This study proposes preprocessing of pipe wall thinning measurement data using support vector machine regression algorithm. By using support vector machine, pipe wall thinning measurement data can be smoothened and accordingly uncertainty and systematic overestimation of the estimated pipe wall thinning rate data can be reduced.

• Journal of Wind Energy
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• v.15 no.1
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• pp.21-29
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• 2024

In order to respond to environmental changes and various events in the nearby sea area due to the operation of an offshore wind substantiation farm in the Southwest Sea, X-band radar has been installed and operated on a fixed platform since 2018. The X-band radar's monitoring system produces wave and current data through Rutter's Ocean WaveS wave and current (Sigma S6 WaMoS II). In this study, to verify the reliability of the produced data, the accuracy of current and wave data was evaluated by analyzing the correlation with the results obtained by an acoustic doppler current profiler (ADCP). The selected analysis period was a total of 30 days from November 29 to December 28, 2021, the period during which the ADCP survey was conducted. As a result of comparative verification, the current, wave height and peak wave period (H_s > 0.69 m) data observed from the X-band radar showed a high correlation with the results investigated from ADCP. In the future, current and wave data produced by X-band radar are expected to be used as basic data to analyze environmental changes in sea areas and provide information on various events.