• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 하계학술대회 논문집 B
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• pp.1392-1394
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• 2003

This paper presents the actual test data of 3 phase, 9 pole, 3.6 [kw] synchronized wind-power generator controlled by hinged vane system and the possibilities of the small mount wind-power generations at the south-east coast of Ul-san. It also shows the data of the wind-velocity acquired by wind-direction sensor, calculation and analysis of the estimated electrical generation power, energy storage systems, and the efficient usages of the wind-power system.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 추계학술대회 논문집 전력기술부문
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• pp.190-192
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• 2003

When generators trip on the occurrence of disturbance, the power system frequency declines by the amount of difference between demand and supply due to the imbalance between power generation and load. Even though the power system is operated with the same grid structure, generating capacity, and load, the resulting frequency decline and its recovery slope show different aspects according to the inertia constants of generators, spinning reserves, and the speed adjusting rates at the governors. From this point of view, we analysed differences of frequency decline at the various conditions in domestic power system.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 추계학술대회 논문집 전력기술부문
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• pp.331-333
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• 2003

This paper describes the effect of the interconnected wind turbine generators on fault current level of distribution networks. Distributed generator(DG) interconnected with grid can supply the power into a power network not only the normal conditions, but also the fault conditions of distribution network. If the fault happened in the distribution power line with DG, the fault current level measured in a relaying point might be higher than that of distribution network without wind turbine generator due to the contribution of wind farm. Consequently, it may destroy the conventional protective devices applied in the distribution network with DG. Simulation results shows that the current level of fault happened in the power line with DG depends on the power output of DG.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2014년도 전력전자학술대회 논문집
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• pp.411-412
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• 2014

In this paper, the switching losses and performances of Silicon Carbide(SiC) and Silicon based on the MOSFETs have been compared. To do this experiment, the buck converter using both SiC and Si devices have been built and tested. As a result, it has been confirmed that the converter with SiC devices shows better efficiency and performance compared with the converter using Si devices.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2015년도 전력전자학술대회 논문집
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• pp.447-448
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• 2015

지연 등화기(Delay Equalizer) 또는 위상 필터(Phase Filter)라고도 불리는 전역 통과 필터(All Pass Filter)는 주파수의 변화와 관계없이 위상만을 변화 시키는 시간 지연 장치(Time Delay Device)이다. 모든 주파수에서 진폭의 이득이 '0' 또는 일정하지만, 위상의 특성만을 개선하기 위해 사용되는 위상 필터 이다. 본 논문은 이와 같은 전역 통과 필터(APF)의 특성을 이용하여 순시 유효 전력(Active Power) 및 순시 무효 전력(Reactive Power)의 측정 방법에 대하여 연구하였다. 전역 통과 필터(APF)의 좌표변환을 사용하여, 필터에서의 정보를 통한 유효 전력과 무효 전력 측정이 가능하다. 따라서 본 논문에서는 시뮬레이션을 통해 그 타당성을 검증하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 추계학술대회 논문집 전력기술부문
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• pp.101-103
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• 2004

Transmission congestion is one of the Key factors to local market power in competitive electricity markets. Withholding is a one of the methods exercise the market power. This paper presents an alternative methodology in market power under transmission congestion and withholding. The proposed methodology was demonstrated with the Optimal Power Flow(OPF). Case study is fulfilled by GAMS simulation.

• Nuclear Engineering and Technology
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• 제11권4호
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• pp.275-286
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• 1979

PMCR은 600MWe CANDU-PHW의 지역 과출력 제어 계통의 일환으로 발전소 내에 설치된 computer를 이용하여 off-line으로 계산을 수행한다 이 프로그램은 계산된 중성자속 분포로부터 연료 연소도를 고려한 출력 분포를 계산하여 정확한 channel 출력 분포를 얻는다. PMCR은 따라서 발전소의 제어 프로그램과 별도로 연료 연소도를 계산한다. 이 논문에서는 기존의 균일 중성자속-출력 전환법을 이용한 계산결과와 비교하여 PMCR이 매우 정확한 출력 분포를 얻고 있음을 보여 준다.

• Nuclear Engineering and Technology
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• 제53권7호
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• pp.2126-2132
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• 2021

Various research groups and private interprises are pursuing the design of a Molten Salt Reactor (MSR) as one of the Generation-IV concepts. In the current work a fast neutron MSR using chloride fuel is analyzed, specially analyzing the power production and neutron flux level in the Intermediate Heat Exchanger (IHX). The neutronic analysis in this work is based on a chloride-fuel MSR with 600 MW thermal power. The core power density was set to 100 MW m-3 with a core H/D [[EQUATION]] 1.0 amd four Intermediate Heat Exchanger (IHX). This leads to a power of 150 MW per IHX; this power is also comparable to the IHX proposed in the SAMOFAR framework. In this work, a preliminary design of a 150 MW helical-coil IHX for a chloride-fueled MSR is prepared and the fission rate, capture rate, and inelastic scatter rate are evaluated.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 1997년도 춘계학술발표회논문집(2)
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• pp.433-438
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• 1997

It Is necessary to calculate radwaste effluent due to change in the fuel defect rate to see the overall change in radwaste effluent md, at present, for this type of calculation DAMSAM code is being used. However, often, one can not access easily to this code with many reason and so we have chosen this case, in this paper, to show a very simplified but quite accurated calculation method without the solving equations. The physical meanning of the parameters in the equations used in DAMSAM have been reviewed to simplify the equations and the result calculated with this method have been compared with that of DAMSAM.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2007년도 춘계학술대회B
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• pp.3341-3346
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• 2007

This paper presents effects of carburetor throttle angle on the performance characteristics of a small sparkignited, gasoline engine. The engine used in the test is a single cylinder, two-stroke, air-cooled 26cc SI engine for brush-cutter. We measured the rpm, torque, power, and fuel consumption according to the six different throttle angle conditions of the rotary-type carburetor and to the engine dynamometer loads. We had concluded that maximum power happened at 5000${\sim}$6000rpm and at the same condition was the minimum specific fuel consumption.