• Electric Engineers Magazine
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• v.216 no.8
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• pp.21-27
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• 2000

기존 전력설비에서의 에너지 비용절감과 효율적인 운전을 위한 접근 방법은 개별 부하, 각 Branch Circuits 또는 주전원 수전부에 Passive 또는 Active Quality Correction 기기와 같은 전력관리 기술을 적용하는 것이다.

• 전기의세계
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• v.31 no.3
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• pp.168-171
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• 1982

본고에서는 전력송배전계통에 사용되고 있는 변압기와 피뢰기용소재로서, 무부하운전시 또는 부하동작시에 발생되는 불가피한 소비전력을 절감시키기 위한 새로운 전기재료의 기술개발 내용을 소개하고자 한다.

• Journal of Digital Convergence
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• v.17 no.10
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• pp.243-249
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• 2019

In this paper, we have developed a device to reduce the standby power consumption that is unnecessarily consumed in unused electrical appliances. The Doppler sensor is used to automatically power off and power off the outlet depending on whether or not a person is present near the outlet. The Doppler sensor uses a coaxial cable trap to design a transmitting antenna and emits a 10 GHz band RF signal and receives a reflected wave signal whose wavelength is reflected from the target object to the receiver to detect an object and recognize human approach. It automatically cuts off and restores standby power to prevent unnecessary power consumption, saving energy and developing a standby power automatic shutdown and recovery device that can prevent the risk of large fires caused by leakage current.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.11 no.6
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• pp.247-253
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• 2011

In this paper, we propose and implement the automated brightness control system using distance measuring sensor for reducing the power consumption of emotional lighting device. In order to reduce the power consumption of emotional lighting devices which express continuous color changes, the proposed device measures the distance continuously using ultrasonic sensor and by using this, it also performs PWM Dimming control. The lighting device is composed of micro controller, LED driver, ultrasonic sensor, communication module and so on. And the device performs the real time brightness control by adapting the measured distance information from ultrasonic sensor to PWM signals. From this experiment, we implement the active lighting system which minimizes unnecessary power consumption during user's absence by adapting existing energy reducing techniques.

• Environmental and Resource Economics Review
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• v.25 no.3
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• pp.449-470
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• 2016

This paper analyzes the effects of nuclear power generation on industrial growth in using the data of 22 manufacturing sectors in 14 nuclear power countries. The hypothesis that the change in the proportion of nuclear power generation in total electricity generation affects industrial value-added and industrial output through industrial electricity price reduction was tested using the dynamic panel data model. First, it was estimated that the increase in nuclear power generation by a 1% leads to a 0.8% reduction in electricity price. The results indicate that when nuclear power generation increased by a 1% point, industrial value-added and output increased by 0.16% and 0.23%,respectively, in the short-run and by 0.51% and 0.85%, respectively, in the long-run. It was also inferred that the effect of nuclear generation on industrial competitiveness working through electricity price reduction rely on institutional settings in the electricity markets. That is, the competitive effect is greater in the countries such as U.K and Japan where electricity price is high and price volatility is large. Meanwhile, in Germany which has pursued phasing out nuclear power, industrial competitiveness is promoted through stable electricity supply.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.969-972
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• 2015

Many studies have been carried out in order to develop a frequency efficient communication system than the current communication system for satisfying the increasing demands of wireless data services in mobile communication systems. If a communication system dramatically improving the frequency utilization efficiency is not developed, service providers must maintain more number of base station equipments to meet the increasing demands of wireless data service. Service provider needs a system or method to reduce maintenance costs. Demands of wireless data service are changed according to time of day, location and so on. Power consumption can be reduced if the supplied power of communication systems is controlled by wireless data traffics. This paper describes the design and implementation of power management system of mobile communication base station's equipment based on smart grid. The proposed power management system controls the supplied power to the mobile communication infrastructures depending on the demand of wireless data. Field test results of the implemented system show the proposed system saves 26% of the power consumption in the base stations.

• Electronics and Telecommunications Trends
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• v.28 no.6
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• pp.206-216
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• 2013

전력반도체는 전력을 시스템에 맞게 배분하는 제어와 변환기능을 가진 소자이며, 에너지를 절약하고 제품을 축소하기 위하여 전력공급 장치나 전력변환 장치에 사용된다. 최근에는 모바일 기기의 증가와 전기자동차의 개발과 맞물려 전력반도체 적용 영역이 확대되고 있다. 선진국들은 산 학 연 관 중심으로 에너지를 절감할 수 있는 친환경 절전형 전력소자 공정, 회로, 모듈 및 시스템 기술 개발에 집중하고 있다. 국내는 원천기술 부족과 해외 특허 등으로 인해 90% 이상을 수입에 의존하고, 기술수준은 선진국대비 50~70%에 불과할 정도로 매우 취약한 편이다.

• 전기의세계
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• v.28 no.10
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• pp.35-40
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• 1979

최적전력조류계산 앨고리즘에서 분할최적전력조류계산 앨고리즘을 유도하였고, 주요점은 적정스텝의 결정과 부등식제약조건을 사용치 않은 점이다. 실규모계통에 지용하여 약0.5[%]의 비용절감을 달성하였는바, 이것은 년 약30억[원]에 해당되며, 겸하여 온라인운전의 가능성을 제시하였다.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.30 no.6
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• pp.27-32
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• 2001

여름철 냉방전력을 심야시간대로 분산시킴으로서, 발전설비 투자비 절감, 설비이용률 향상, 이산화탄소 배출 감소 효과가 있는 축열식 전력공조시스템에 대한 한전의 지원제도를 알아 보고자 한다.

• Electric Engineers Magazine
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• v.192 no.8
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• pp.25-31
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• 1998

전동기에서 소비되는 전력사용량은 전체 전력소비량의 약 70%를 차지하고 있는 것으로 조사되고 있다. 이와 같이 전력사용의 많은 부분을 차지하고 있는 전동기에 대한 고장 예방활동은 산업체에서는 설비이용률의 향상에 따른 생산성 향상을 수반할 뿐 아니라 유지보수비의 절감을 가져올 것이고 가정이나 서비스분야에 있어서도 유사한 관점에서 검토 될 수 있을 것이다.