• 한국조명전기설비학회지:조명전기설비
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• 제6권3호
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• pp.57-62
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• 1992

In this paper, the reasonable design standard of Demand Factor for large office buildings is introduced that was made by the statistical way considering actual conditions, such as investigated electrical equipment capacity, electrical power consumption, etc. The results are as follows. 1) It is shown that th saving of electrical equipment investment, the decrease of power loss, the improvement of facilities utilization and the decrease of electrical power rates can be contributed by the application of the design standard. 2) The effect of reduction is showed to confirm the practical use of the proposed reference Demand Factor, and also, it is believed that this proposed reference Demand Factor will be useful in electrical equipment operation and planning.

• 전자통신동향분석
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• 제33권3호
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• pp.41-50
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• 2018

In order to ensure the electromagnetic safety of a complex facility equipped with a variety of electric and electronic equipment, the European Union (EU) has enacted and applied the Electromagnetic Compatibility Directive (EMC Directive 2004/108/EC) to a fixed installation. This paper introduces the regulations and techniques related with electromagnetic compatibility (EMC) engineering applied to a fixed installation, which is used to prevent a malfunction of critical equipment and systems caused by unwanted electromagnetic waves and to operate the facilities with stability.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집
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• pp.476-482
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• 2009

A signal equipment improvement project for the existing facility ATS to ATP is under construction in Kyung-Bu and Ho-Nam commercial line including 400 rolling stocks. But there was a concern for the interface between KTX OBCS and ATP from the beginning of the project. At present, this is the front burner event. This paper introduces interface checking and predicted failure point between KTX OBCS and ATP improvement system. Through this measure the optimal installation of the ATP will be possible. The study was made under maintenance efficiency including reliability because the KTX signal equipment must qualify the above condition.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2004년도 춘계학술대회 논문집
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• pp.460-462
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• 2004

This paper gives a basic data of improving the performance of railroad signalling equipment by adopting GPS and wireless telecommunication technologies. These approach enable the moving block control of train, which can optimize train operation by reducing the distance between trains and maximize the railroad capacity. These method of detecting train position and controling train movement can also improve the train route control at stations.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2003년도 학술대회논문집
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• pp.259-264
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• 2003

In this paper, web based monitoring systems are implemented using embedded Linux. The external equipment is controlled via HTTP protocol and web browser program. HTTP protocol is ported into Linux. A micro web server program and external equipment control program are installed on-board memory using CGI to be accessed by web browser. Experimental result of the proposed web based monitoring systems can be used in automation systems and remote distributed control via internet using web browser.

• 조명전기설비학회논문지
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• 제20권10호
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• pp.107-113
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• 2006

엘리베이터 갇힘 사고 절대 건수가 매년 증가하고 있다. 또한 층 표시 오류, 순시전압강하 및 순시정전으로 인해 승강기 멈춤 후 기준 층 이동 등 승객의 불안감을 유발시킬 수 있고, 인명 사고와 연결될 수 있는 오동작 사고가 발생을 하고 있다. 따라서 본 논문에서는 이런 갇힘 및 오동작을 발생시킬 수 있는 요인에 대한 대책 기기(SPD, Filter, Reactor)가 어느 정도 제어반 설비에 설치되어 있는지 현상 실태조사 및 현장에서 느끼는 오동작 부분에 대해 조사하였다. 조사 결과 90년대 초반 인버터 기종으로 변경되면서 대부분 전원 품질 대책 기기 선치가 미비하였고 최근 들어 대책 기기가 설치됨을 확인할 수 있었다. 하지만 근본적으로 현장에서 느끼는 오동작 횟수는 줄어들지 않음을 확인할 수 있었다. 본 자료는 현재 진행 중인 EN12016(2004) 규정 및 IEC 규정에 따른 엘리베이터의 Sag, Interruption, ESD 등에 대한 내성 시험을 통해 엘리베이터 설비의 성능 평가 부분과 비교해 현장에서 발생될 수 있는 오동작 부분에 대한 가능성을 제시하는데 자료로 사용될 것이다.

• 한국ITS학회 논문지
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• 제19권6호
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• pp.49-60
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• 2020

교통사고 예방을 위해 설치되는 무인교통단속장비의 운영대수는 매년 경찰청과 지방자치단체의 지속적인 설치로 해마다 증가하고 있다. 하지만 공학적, 체계적인 분석결과가 아닌 민원 위주의 정성적인 판단을 기반으로 설치하고 있어 정량적인 설치기준이 필요한 실정이다. 따라서 본 논문에서는 도로 유형별 사고 심각도를 고려한 설치 판단기준을 제시하고 필요 설치대수를 산출하여 향후 추가 설치대수를 도출하는 것을 목표로 하였다. 사고건수와 KSI를 활용하여 교통사고 심각도를 나타낼 수 있는 ARI 지표를 개발하였으며, 일원배치 분산분석과 군집분석을 통해 도로유형을 4가지 유형으로 분류하고, 도로 유형별 사고 잦은 곳의 사고정보를 분석하여 교통사고 심각도가 높은 군집의 ARI를 도출하였다. 도로 유형별 단속장비의 설치 판단을 위한 ARI 값을 제시하였고, 사고 잦은 곳 중 교통단속장비가 기 설치된 구간을 제외하고 5,244대의 추가 설치가 필요한 것으로 분석되었다.

• 전기학회논문지P
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• 제64권1호
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• pp.1-6
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• 2015

Factors that have influence on solar power generation are specified into three aspects such as meteorological, geographical factors as well as equipment installation. Meteorological factors influence the most among the three. Insolation, sunshine hours, and cloud directly influence on solar power generation, whereas temperature and wind speed have impacts on equipment installation. This paper provides explanation over temperature-wind speed equation by calculating influence of temperature and wind speed on equipment installation. In order to conduct a research, pyranometer, anemometer, air thermometer, module thermometer are installed in 2MWp solar power plant located in South Cholla province, so that real-time meteorological data and generating amount can be analyzed through monitoring system. Besides, if existing and new methods are applied together, accuracy of prediction for generating amount is improved.

• Journal of Advanced Research in Ocean Engineering
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• 제1권2호
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• pp.85-93
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• 2015

The nonlinear time-domain analysis method was implemented to carry out a series of integrated simulations for a deep-water crane vessel system composed of four sub components, including a floating vessel, lifted equipment, hoisting cable and dynamic positioning (hereinafter DP) system. The analysis of the coupled dynamics consists of the crane vessel and equipment connected using the crane wire, and the DP is modeled according to the wind, wave and current conditions. The DP systems were numerically implemented using a classical PD feedback controller, and various simulations of the deepwater installation were conducted using different conditions in order to evaluate the global performance of the floating crane vessel combined with the DP system.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 하계학술대회 논문집 C
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• pp.1721-1723
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• 2002

This paper deals with the analysis of field condition for earth leakage current alarming system in the stage lighting, stage sound stage machinery installation. These analyses of field condition were carried out in accordance with investigating an installation of earth leakage current alarming system with respect to a main line of power source, dimmer, sound equipment, machinery mobile unit equipment and so on. As a result of analyses. The earth leakage current alarming system has been installed only a part of the main line of power source and the probability of places which were installed was less than 50(%). Therefore, it is desirable that the earth leakage current alarming system is installed at places which are suitable, for example, dimmer, each kind machinery etc. in order to prevent electrical hazard.