• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.123-124
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• 2007

In order to reduce the seasonal unbalance of Gas demand, this paper analyzes the effects of gas increase and energy saving that result from the energy pattern of CHP for industry, and evaluates the variation of Korean gas demand's TDR through those effects.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.65-66
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• 2007

현재 수립된 3차전력수급기본계획의 전원구성을 WADE Economic Model을 사용하여 친환경적이며, 경제적이고 기존 대형발전소의 보완 역할이 기대되는 분산형전원으로 우리나라의 전원을 구성하였다. 즉, WADE Economic Model로서 신규수요를 CG(Centralized Generation) 및 DE(Decentralized Energy)의 담당비율에 따라 시나리오를 구성하여 3차전력수급기본계획의 전원구성을 WADE Economic Model에 의한 시나리오로 전원을 구성한 경우와 비교 분석하였다.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2006.05a
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• pp.442-447
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• 2006

This paper investigates the shadow amount of edifice and according to time zone used by its Electric heating appliances, it is analyzed that Electric Heating Power Load affects Heal power load variation curve. Also, in case that the far infrared ray heating system, which are used as new electric heating system, occupies some of the existing Electric heating appliances, it is analyzed that the Electric heating power load affects the Peak load power in Korea.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2006.05a
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• pp.448-452
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• 2006

Many kinds of electric heating appliance is used by user interface and desire. Far infrared ray heating system can use a kind of main heating appliance. This paper gives un saving amounts, energy curtailment money and payback period between far infrared ray heating system and existing electric heating appliance - EHP, electric air heater, electric radiator, electric floor heating system - from economy analysis.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.1255-1256
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• 2007

전도, 대류, 복사 방식의 열전달 방식중에서 복사방식이 가장 효율적이고 쾌적한 난방이라는 것은 기존의 연구에서도 잘 알려진 사실이다. 본 연구에서 제안한 천장형 원적외선 복사난방 방식은 같은 면적에서 같은 전력을 투입하였을 때, 설정온도 도달시간이 기존의 전기 난방기 보다 약 $10{\sim}20$분 빠르게 도달함을 알 수 있으며, 그만큼 에너지절약이 된다는 것을 알 수 있었다.

• Proceedings of the KIEE Conference
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• 1998.11a
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• pp.235-238
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• 1998

This paper presents a reliability assessment for Inchon International Airport. Reliability of electrical parts and load points is calculated through Network reduction method and Failure modes & effective analysis method. And reliability indices of distribution system is calculated. By using reliability and reliability indices, assessment of distribution system of Inchon International Airport is executed. This results makes it possible to improve reliability.

• Proceedings of the KIEE Conference
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• 2004.11b
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• pp.107-110
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• 2004

This paper provides calculation of nodal price using voltage variables on Power System Operation. In this method we show deriving Shadow Price from state variables in Optimal condition. and we presented a new spliting method using voltage variables for zonal price. The proposed method is applied to IEEE-30 and results shows the effectiveness of the method.

• Proceedings of the KIEE Conference
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• 2004.11b
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• pp.119-121
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• 2004

This paper presents a methodology which can make alternatives of distribution system, and can calculate reliability costs, harmonics costs, and construction costs. And by using total cost of the system, decision maker can select the most economic and reasonable alternative. As a result, not only we can decide most economical and reasonable result, but we can get proper reliability and harmonics level. The usefulness of the method is verified by applying it to the test system.

• Proceedings of the KIEE Conference
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• 2004.11b
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• pp.128-130
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• 2004

The cost losing synchronous through a transient instability is extremely high in modem power systems. This paper presents a power transfer capability calculation algorithm considering transient stability. The theoretical development is straightforward: dynamic equations are converted to numerically equivalent algebraic equation and then integrated into the standard formulation for power transfer capability calculation. The proposed method is applied to IEEE-24 Reliability Test System and the results shows the effectiveness of the method.

• Journal of the Korean Society of Tobacco Science
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• v.23 no.1
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• pp.65-70
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• 2001

In order to compare the extraction patterns of main components from the raw material between the extraction methods, the aerial parts (dried stem, leaves, and flowers) of Agastache rugosa were extracted by SDE simultaneous steam distillation & extraction) and SFE (supercritical fluid extraction). Volatile components of essential oil and extract were identified by GC and GC-MSD. The contents of essential oil extracted by SDE were 0.49% in aerial part of Agastache rugosa on dry basis. Major components were methyl chavicol(27.2%), isomenthone(24.6%), hexadecanoic acid(13.0%). menthone (5.5%) among 32 kinds of components confirmed in essential oil. On the other hand, the contents of SFE extracts revealed 3.21% on dry basis, 6 times higher than those of SDE. Major components were isomenthone(15.3%), hexadecanoic acid(13.7%), methyl chavicol(12.6%), benzoic acid(3.8%) among 33 kinds of components identified in extract.