• 제목/요약/키워드: 김용하

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중.장기 분산전원계획 수립용 모델연구(II) (The Study on the Plan Development of Long & Mid Term Distributed Generation(II))

  • 김용하;우성민;문정호;연준희;박창규;김영길;이해일
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2009년도 제40회 하계학술대회
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    • pp.444_445
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    • 2009
  • A common approach to estimate long-term electric expansion plan used WASP package in Korea. But, this has a little problem for making input DG(Distributed Generation) data computer. This paper develops new program that take complementary measures for DG. Also, it is verified that this package can evaluate availability from the case studies. When this program cooperate with WASP, calculate good results creating long-term electric expansion plan.

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원적외선 복사오븐의 전자파 및 열적 특성연구 (The Study of Characteristic of Electromagnetic wave and Heat of Far Infrared Ray Radiant Oven)

  • 김용하;백범민;우성민;정현성;유정희;박화용;박종민
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2009년도 제40회 하계학술대회
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    • pp.2053_2054
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    • 2009
  • This paper studied about the characteristics of the Far Infrared Ray Radiant Oven. We decrease intensity of electromagnetic wave which depended on electric and magnetic field occured by the Far Infrared Ray Radiant Oven and then the affected effect on the human body is minimized.

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산업체 열병합발전이 가스 및 전력수급에 미치는 영향 산정 (The Effects of Gas and Electric Demand according to Construction of Industrial CHP in the Korea)

  • 김용하;우성민;백범민;연준희
    • 에너지공학
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    • 제18권1호
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    • pp.22-30
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    • 2009
  • 본 논문에서는 산업체의 최근의 에너지를 둘러싼 문제점을 해결하기위해서 에너지다소비신고업체의 현황을 분석하고 산업체 업종별 전기와 열의 부하패턴 분석하여 가스열병합발전의 보급 확대를 위한 기반을 구축하였다. 즉, 경제성분석을 통하여 에너지다소비신고업체 중에서 가스 열병합발전으로 전환 가능한 잠재량 도출하여 우리나라 가스 및 전력수급에 미치는 영향을 분석하였다.

근적외선카메라 KASINICS 개발과 특성

  • 문봉곤;진호;이성호;육인수;박영식;남욱원;차상목;조승현;박윤호;경재만;성현일;김용하
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
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    • 한국우주과학회 2008년도 한국우주과학회보 제17권1호
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    • pp.28.4-29
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    • 2008
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국가 및 전력회사의 관점에서 열병합발전의 편익산정에 관한 연구 (A Study on Calculation of Combined Heat and Power on Standpoint of Nation and Independent Power Producers)

  • 김용하;이평호;김영길;조현미;우성민
    • 전기학회논문지
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    • 제60권5호
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    • pp.905-912
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    • 2011
  • In this paper, the method on calculating benefits of combined heat and power is introduced for standard evaluation in electrical power system. This paper calculates benefits about new national viewpoint and viewpoint of independent power producers and assesses benefits of combined heat and power in Korea and In Seoul national capital area. Benefit costs are composed of avoid cost of centralized generation, line upgrading adjustment, loss adjustment and electrical power trade cost per year in earlier study, in addition trade cost of $CO_2$, construction cost of combined heat and power for accurate calculation. Benefit of combined heat and power is calculated by simulation results of real electrical power system.

우리나라 전력계통에서 분산형전원의 구축 시나리오에 의한 전력소매비용평가 (Assessment of Power Retail Cost by Penetration scenarios of Decentralized Generation in Korean Power System)

  • 김용하;우성민;오석현;유정희
    • 전기학회논문지
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    • 제58권3호
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    • pp.478-485
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    • 2009
  • This paper describes retail cost through scenario in the ratio of CG(Centralized Generation) and DG(Decentralized Generation) that constructs new generation capacity in the future. it is not calculated for the supply, but for demand considering an advantage of DG. In the Korea Power System, retail cost that composed of construction, T&D, fuel, maintenance and environment shows macro-trend that power system planning through penetration for DG will be more significant.

PLOC를 고려한 배전계통의 신뢰도 계산 및 ANP에 의한 종합적 평가 (Reliability Assessment Considering PLOC and Unified Evaluation via Analytic Network Process)

  • 이범;김용하
    • 조명전기설비학회논문지
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    • 제14권3호
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    • pp.59-67
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    • 2000
  • 본 연구는 확장하연서도 적용하기 어려운 계통인 인천국제공항 배전계통에 대하여 전력공급제한을 포함하는 종합적언 선협도평가를 하였다. 우선, 계통의 선로제약 및 전압강하를 고려한 평가를 하기 위하여 확정론적인 방법과 고장모드-효과분석법에 지반을 푼 PLOC지법을 도입하고, 신뢰도지수를 계산하었다. 또한 계통의 능력을 평가하고, 신뢰도를 개선하기 위하여 ANP를 도입하였다. 이와같은은 결과로 정확한 신뢰도를 계산하교 취약부분을 찾아내고, 계통의 확장계획을 수립하는 것올 가능하게 하였다.

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전력설비의 고조파진단에 관한 연구 (A Study on Harmonics Detection for Power Equipments)

  • 이범;김용하;최상규;김종국
    • 한국정보통신학회:학술대회논문집
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    • 한국해양정보통신학회 2000년도 추계종합학술대회
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    • pp.669-672
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    • 2000
  • This paper presents the methodology which analyze the effect of harmonics in power system. Considering the effect of less-harmonics, economic life and system loss, we have made the comprehensive countermeasure. According to the results of studying harmonics diagnosis and countermeasure, the following problems are pinpointed: protection of power system double investment space of the field. Therefore, in the initial stage, the countermeasure of harmonics trouble are set up. h a results, the following work has been done: $\circled1$ Generation source of harmonics and it's effect into en power system $\circled2$ Review of law related to harmonics, $\circled3$ Countermeasures to reduce the harmonics

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Fast Hartley Transform을 이용한 확률론적 발전 시뮬레이션에 관한 연구 (A Study on the Probabilistic Generating Simulation by Fast Hartley Transform)

  • 송길영;김용하;최재석
    • 대한전기학회논문지
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    • 제39권4호
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    • pp.341-348
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    • 1990
  • This paper describes an algorithm for evaluating the Loss of Load Probability (LOLP) and calculating the production cost for all the generators in the system using Fast Hartley Transform (FHT). It also suggests the deconvolution procedure which is necessary for the generation expansion planning. The FHT is as fast as or faster than the Fast Fourier Transform (FFT) and serves for all the uses such as spectral, digital processing, and convolution to which the FFT is normally applied. The transformed function using FFT has complex numbers. However, the transformed function using FHT has real numbers and the convolution become quite simple. This method has been applied for the IEEE reliability test system and practical size model system. The test results show the effectiveness of the proposed method.

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Monte-Carlo Simulation을 이용한 연계계통의 최대수송전력 산정 (Maximum Transfer Capability Calculating in Interconnected Power System using Monte-Carlo Sinulation)

  • 남광우;김용하;이범;최상규
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2000년도 하계학술대회 논문집 A
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    • pp.360-362
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    • 2000
  • This paper presents a probabilistic method for describing the transfer capability of one area in an interconnected power system. The approach is based on Monte Carlo simulation scheme. The result of this method is the probability distribution of transfer capability. The distribution yield a general framework for probabilistic analysis of STC. IEEE RTS-24 power system is utilized to evaluate the proposed method.

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