• 한국전기전자재료학회논문지
• /
• 제33권5호
• /
• pp.418-426
• /
• 2020

This study tested the electrical, structural, and thermal safety of LED lighting products, available on the market. Five recessed LED systems, 20 W each, and five fixed LED systems, 25 W each, were selected. Dielectric strength tests, live part electric shock protection tests, and thermal tests were conducted on the LEDs. These were key tests for user safety, according to the specification of the safety criteria for electric products, KC 60598-1, South Korea. In addition, the wiring temperature of UL1007, 60227 IEC 08, and UTP cables, was measured. The results of the study gave an in-depth examination of the safety of LED lighting systems for users.

• 한국조명전기설비학회:학술대회논문집
• /
• 한국조명전기설비학회 2006년도 춘계학술대회 논문집
• /
• pp.426-431
• /
• 2006

The case where a drain cannot flow backwards, a sewer institution can be unmanageable in this, and a mad is under water momentarily by local heavy nin by the climate phenomenon in spite of not being a lowlands belt has occurred well more than recently. By the flooded mea since it is in the state which has some human bodies at hand, when a short circuit occurs in street lighting pole which is the electric institution thing of a road, the danger of an electric shock accident becomes higher. In this paper, it was going to show improvement plan for grasping the brittle factor of street lighting pole electricity facilities through the on-site survey of street lighting pole electricity facilities, and improving this.

• 대한임베디드공학회논문지
• /
• 제7권2호
• /
• pp.103-111
• /
• 2012

This paper introduces a novel concept of 'A Green LED Sensitivity Lighting System' which can automatically estimate QoS(quality of service) and emotional requirements of user using smart phone. And it can intelligently control ambient illumination lamp to conserve electric energy and to satisfy human sensitivity. The proposed system has 4 control modes; emotional lighting, smart lighting, green lighting and realistic lighting modes in order to comfort man's emotion, to maximize work efficiency, to save energy consumption and to make the entertainment more fun, respectively. When we choose green lighting mode for indoor office situations, an elaborate simulation shows that the proposed system with home network can reduce the energy by 50% compared to conventional light control system with a fixed time-based switching.

• 조명전기설비학회논문지
• /
• 제19권6호
• /
• pp.1-8
• /
• 2005

건물 내에 존재하는 자연광은 조명원으로 국한되지 않고 시각적, 심리적 자극을 통한 실내 환경의 질적 향상에 이르기까지 에너지절약 및 공간의 쾌적성에 큰 영향을 미친다. 유입되는 자연광량에 비례적으로 연동되는 건물에너지는 전기조명에너지를 절감시키고 난방 기간동안 일사열의 유입에 따른 난방에너지를 절감시킨다. 여름철에는 전기조명의 소등으로 인한 조명원의 발열량이 감소됨으로써 냉방부하의 감소에 이르기까지 포괄적인 영향을 미친다. 조명개발분야의 선진국에서는 에너지 절약형 광원의 대체와 아울러 자연채광과 통합된 최적 조명제어 기술의 운용만이 건물이 가지고 있는 에너지 절약의 잠재력을 현실화시킬 수 있다고 판단하고 있다. 따라서 본 연구는 일반적인 사무소 모델 공간의 에너지 절약형 인공조명을 대상으로 자연광 유입에 따른 연동적 조명제어 기법을 적용하는 경우를 대상으로, 인공조명의 소등량에 따른 조명에너지의 절감량과 이에 수반되는 냉방에너지의 점감량 및 일사열 취즉에 따른 겨울철 난방 부하 절감량을 분석함으로써 자연채광의 건물에너지에 대한 연간 기여도를 통합 분석하였다. 특히 자연채광의 성능은 실험을 통한 측정 데이터를 이용하고 에너지 해석 프로그램을 재구성하여 실질적인 절감량을 도출하도록 시도하였다.

• 전기학회논문지
• /
• 제60권3호
• /
• pp.674-679
• /
• 2011

In this paper, we experimented and analyzed about electric fire risk assessment methods of LED lightings for outdoor. LED lighting is composed of AC power lines, AC/DC converter, DC power lines and LED lamps. There are some risk factors of electric fire in LED lighting such as short circuit between power lines or power line and ground, dielectric breakdown, leakage current, abnormal voltage inflow, poor contacts(connections), etc. As a result of this study, insulation coverings of wire was ignited due to dielectric breakdown between power lines and molten marks were formed in copper conductor. LED lighting was blown out while short circuit, beside that, electrical disorder did not occur. When abnormal voltage was inflowed, electronic components such as varistor, condenser were damaged. Partial heating was produced and insulation was melted and carbonized by arc and heating while poor contacts were happened. We expect that the results of this study would be helpful for electrical safety of LED lightings for outdoor.

• 한국조명전기설비학회지:조명전기설비
• /
• 제10권3호
• /
• pp.43-46
• /
• 1996

본 연구는 국내 지하상가시설의 부하특성과 수요증가현황, 조명용 변전시설밀도 등을 실축, 조사하여 합리적이고 통계적인 조명용 변전용량의 적정 설계를 위한 기준을 설정하여 제시하며, 조명설비의 합리벅 설계에 의한 전기설비 사용 합리화를 도모하고자 한다.

• 한국태양에너지학회 논문집
• /
• 제29권1호
• /
• pp.11-17
• /
• 2009

Daylighting is core of sustainable design in most buildings. Well-designed daylighting systems can significantly reduce or even eliminate the electric lighting loads during the day time, including air conditioning energy loads. Among window systems. the topside lights systems including monitor lighting, sawtooth lighting, sunscoop and, lightscoop is one of the most popular apparatus to improve the lighting quantity. Also they are important both in terms of energy savings and visual quality. The objective of this study is to analyse daylighting performance of topside lighting system for different orientations. Four types of topside lighting system were tested and comparpd: monitor lighting, sawtooth lighting, lightscoop and sunscoop. Totally 25 measuring points of illuminance on the horizontal plane were monitored from 09:00 to 17:00 on October 6, 2008. Agilent data logger and photometric sensors Li-cor were used. Comparisons with a light factor is discussed. The results found in this study would mean that there were no significant differences in light factor between three cases.

• 조명전기설비학회논문지
• /
• 제29권2호
• /
• pp.1-7
• /
• 2015

The Light Emitting Diode(LED) lighting control system proposed in this thesis is made up of a sensor module, a microcontroller, Bluetooth wireless communication, LED Driver, and LED downlight. The sensor module, comprised of an infrared sensor, an illumination sensor, and a temperature sensor, was designed to one Printed Circuit board(PCB). The system is able to identify the environment information collected by the sensor, and make it possible to control lighting automatically and manually through sensors. In addition, depending on users' conditions, a color temperature can be controlled. CS-1000, a spectroradiometer, was employed to measure the changing values of a color temperature in 8 steps. According to a test, it was found that it was possible to change a color temperature from 3187K of Warm White LED to 5598K of Cool White LED. The Bluetooth based wireless communication technique makes it possible to control more lighting devices than other wireless communication techniques does.

• 기술사
• /
• 제34권5호
• /
• pp.40-43
• /
• 2001

상암동 월드컵 주정기장은 축구 전용경기장으로서 2002년 월드컵 축구경기를 위한 꿈과 감동의 라이브 스테이지로서의 스타디움 시설로 각종 국내외 축구경기는 물론 문화행사를 효율적으로 운영할 수 있도록 계획되었다. 이에 효율적인 경기장 시스템 구성과 적정한 전기시설물 설치로 최상의 경기운영을 할 수 있도록 전력시스템을 안정화 하였으며, 월드컵 경기 이후 스포츠공간과 상업시설, 공공시설 등 복합화된 스포츠 문화시설에 부합할 수 있도록 수변전 설비 및 방재센타 등을 다분화하여 시설하였으며 국제적 행사의 장에 전기인으로서 일익을 담당할 수 있었음에 감사한 마음이다.

• 한국조명전기설비학회:학술대회논문집
• /
• 한국조명전기설비학회 2008년도 추계학술대회 논문집
• /
• pp.289-292
• /
• 2008

This paper represents the electric energy saving using light control system. Without Light Control System(LCS), it is very hard to classify the amount of electric energy saving for lighting, since it is determined by the end-user's preference in times. Typical LCS has an fixed algorithm to control each light's intensity by ON/Off Control, Step Control, or Dimming Control. We have studied the electric energy saving effect in a LCS equiped building with natural lighting. The electric power consumption at the peak power consumption time with LCS reduced up to 65% of the non-controled case.