• 제목/요약/키워드: Perfornance Ratio

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입력광파면 왜곡에 따른 광학계 성능 (Optical perfornance depending on input wavefront distortion)

  • 김연수;김현숙;최세철;김창우;이윤우;송재봉;김병윤
    • 한국광학회지
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    • 제12권3호
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    • pp.172-176
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    • 2001
  • 입력광파면 왜곡에 따른 광학계의 성능을 Strehl 비로 분석하였다. 입력 광파면의 왜곡을 저주파 왜곡과 고주파 왜곡으로 구분하여 결상면에서의 Strehl 비를 구하고 광학계의 저하시키지 않는 입력 광파면 왜곡의 광축상에서의 진폭을 정량적으로 구하였다.

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태양광발전시스템 국내 지역별 발전특성 분석 (Analysis of Power Generation Characteristics of a Photovoltaic System in Korea)

  • 이현승;김법전;신우철
    • 한국태양에너지학회 논문집
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    • 제39권2호
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    • pp.33-43
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    • 2019
  • In this study, reflecting long-term climate characteristics, we analyzed electricity generation and generation characteristics of 3kWp PV system, which was semi-integrated with air duct behind. Using PVsyst as a simulation analysis tool, we inputted "National reference standard weather data" of 16 regions as a typical climatic data. The result is summarized as follows: First, the national average annual electricity generation was 1,312 kWh/kWp (StDev, ${\sigma}=71$). It was most abundant in Mokpo with 1,434 kWh/kWp, which was average 21% greater than the lowest with 1,165 kWh/kWp in Seoul and 1,197 kWh/kWp in Jeju. National average daily generating time based on STC was 3.6 hours (${\sigma}=0.43$), and that of Mokpo and Seoul was 3.9 and 3.2 hours respectively. Second, Jeju showed the great difference of annual monthly generation by month (annual average = 99.7 kWh/kWp, ${\sigma}=25.5$), while Jinju showed the smallest difference (annual average = 115.5 kWh/kWp, ${\sigma}=10.6$). Generation in Jeju was at the largest in April with 132.2 kWh/kWp, which was 2.3 times greater than the lowest 55.2 kWh/kWp in January. However, generation in Jinju was at the largest in March with 129.3 kWh/kWp, which was only 1.3 times greater than the lowest 101.1 kWh/kWp in June. Third, the annual average PR was the highest in Incheon with 85.8% and the lowest in Jeju with 83.2%. PR of Mokpo was 84.3%, which was lower than that of national average.