• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.28 no.7
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• pp.91-96
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• 2014

The requirements for separation between ICT cables and power cables depend upon the electromagnetic immunity of the ICT cable, the construction of the power cable, the quantity of, and type of electrical circuits and the presence of dividers etc. We studied and reviewed the regulations and standards relevant for requirements of this separation in domestic and foreign. And then we would like to suggest the method of separation calculation between ICT and power cabling taking the EMC into consideration.

• Proceedings of the KIEE Conference
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• 2007.10c
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• pp.226-228
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• 2007

The standardization system in Urban Transit is the system that verifies and develop the standard, a safety standard, a performance test standard and a Quality certification standard to improve the capability, the safety and operational efficiency and that develops technologies of the main installations. We have already developed a signal, electric power in Urban Transit. Also, we have already noticed the standardization of railroad tracks and developed the main installations through the first stage in the standardization in 1995${\sim}$2006. Still, there remains many fields to standardize, like information and communication facilities, facilities in the station, governmental organizations and maintenance facilities because, Urban Transit is so widespread. In case that we do not keep promoting the standardization in Urban Transit, rather it could hamper development of the Urban Transit. So, it is important to maintain and advance the standardization in Urban Transit. In this paper, we suggest the research course that we would promote, to maintain and develop the standardization in Urban Transit.

• Proceedings of the KIEE Conference
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• 2007.04b
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• pp.99-102
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• 2007

Infrared thermography is one of the most valuable and cost-effective diagnostic techniques for predictive maintenance on electrical systems. For the installations, the thermography can identify major problems, which if left unattended could lead to breakdowns. The result thermal images depend upon operator skills, inspection technique, and weather conditions. When the thermographer is applied to remote monitoring, the conditions of the systems are not perfectly analyzed because operators are hard to know the weather effects of the installed place. Therefore, this paper defines the effect by weather conditions these factors will influence the final results. The purpose of this paper is to define the weather effects that a thermographer needs to consider for successful condition analysis.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2009.10a
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• pp.387-390
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• 2009

앞으로 국제경쟁력 확보를 위해서는 성능중심의 건설기술기준 적용이 필요하다. 성능중심의 건설기준을 개발하고, 성능계약제도 도입방안을 구축함으로써 시설물의 성능을 향상시키고, 생애주기비용 (LCC)을 절감하며, 설계 및 시공자의 기술개발을 유도하는 것이 필요하다. 본 연구에서는 건축전기설비분야를 중심으로 에너지절약 요소기술을 발굴하고, 설계기준에 기술하기 곤란한 사항, 기술자가 효율적인 업무수행을 위하여 필요한 사항들을 도출하여 실무에 쉽게 활용하도록 설계편람을 작성하는데 있다.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.2202-2203
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• 2011

AC substation of urban transit supplies a suitable AC power on electricity vehicles. AC substation is verified electrical safety of system through pre-operation inspection on electrical installations to be supplied power from KEPCO. However, because test items and method for AC traction system are unprepared on pre-operation inspection, the general safety and performance verification of AC traction system are very insufficient. Therefore this paper analyze the test examples such as factory equipment tests, factory combined tests and railway tests for the safety and performance verification of AC traction system and present a suitable test items and test standard in domestic.

• The Transactions of the Korean Institute of Electrical Engineers P
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• v.56 no.3
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• pp.142-147
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• 2007

Infrared thermography is one of the most valuable and cost-effective diagnostic techniques for predictive maintenance on electrical systems. For the electric installations, the thermographies can identify major problems, which if left unattended could lead to breakdowns. The result thermal images depend upon operator skills, inspection technique, and load and weather conditions. When the thermographer is applied to remote monitoring, the conditions of the systems are not perfectly analyzed because operators are hard to know the weather's effects of the installed place. Therefore, this paper defines the effects by weather conditions which will influence the final results. The purpose of this paper is to define the weather effects that a thermographer needs to consider for successful condition analysis.

• Proceedings of the KIEE Conference
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• 2001.05a
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• pp.42-45
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• 2001

The islanding protection for distributed resources (DR) becomes an important and emerging issue in power system protection since the distributed generator installations are rapidly increasing and most of the installed systems are interconnected with distribution network. In order to avoid the negative impacts on distributed network resulting from islanding operations of DR, it is necessary to detect the loss of mains (LOM) effectively. This paper presents a new LOM detection method using the rate of change in total harmonic distortion (THD) of current. The proposed method effectively detects LOM of the DR unit operating in parallel with the distribution network. We also verified the efficiency of the proposed method using the radial distribution network of IEEE 34 bus model.

• Journal of Electrical Engineering and Technology
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• v.8 no.1
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• pp.31-39
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• 2013

Proper installation of Flexible AC Transmission Systems (FACTS) devices in existing transmission networks can enable power systems to accommodate more power transfer with less network expansion cost. The problem to maximize transmission system loadability by determining optimal locations and settings for installations of two types of FACTS devices, namely static var compensator (SVC) and thyristor controlled series compensator (TCSC), is formulated as a mixed discrete-continuous nonlinear optimization problem (MDCP). For solving the MDCP, in the paper, the proposed method with fitness sharing technique involved in the updating process of the particle swarm optimization (PSO) algorithm, can diversify the particles over the search regions as much as possible, making it possible to achieve the optimal solution with a big probability. The modified IEEE-14 bus network and a practical power system are used to validate the proposed method.

• Proceedings of the KAIS Fall Conference
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• 2011.05a
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• pp.186-189
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• 2011

최근 전력의 효율적 사용을 통해 에너지절약과 발전효율을 향상시키기 위해 국가적으로 스마트그리드 실증 사업이 추진되고 있다. 또한 스마트그리드 특별법, 기술개발 지원 등 제도적 지원을 통해 기술 보급 사업을 실시할 예정이다. 하지만 스마트그리드는 전력의 생산, 전송 및 사용을 중심으로 투자 및 개발에 집중되고 있고 전기안전의 확보에 대한 정책 및 기술적 투자가 부족한 실정이다. 따라서 본 논문에서는 스마트그리드의 성공적 구축을 지원하기 위해 추진되어야 할 고객전기설비 안전성 확보 정책 방향을 제안하였다.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2008.10a
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• pp.341-344
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• 2008

앞으로 국제경쟁력 확보를 위해서는 성능중심의 건설기술기준 적용이 필요하다. 성능중심의 건설기준을 개발하고, 성능계약제도 도입방안을 구축함으로써 시설물의 성능을 향상시키고, 생애주기비용(LCC)을 절감하며, 설계 및 시공자의 기술개발을 유도하는 것이 필요하다. 본 연구에서는 건축전기 설비분야의 에너지성능 기준 개념과 외국의 도입사례를 살펴보고, 에너지성능기준 개발 대상 및 범위를 설정하고 성능기준 개발을 위한 접근방법을 도출하였다.