• Title/Summary/Keyword: photovoltaic system

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Study on Analysis of Suitable Site for Development of Floating Photovoltaic System (수상태양광 발전시스템 개발을 위한 적지조사에 관한 연구)

  • Lee, Sung-Hun;Lee, Nam-Hyung;Choi, Hyeong-Cheol;Kim, Jin-O
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.26 no.7
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    • pp.30-38
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    • 2012
  • Recently, interests in renewable energy have gradually increased. Photovoltaic system of various renewable energy is the most interest in power sources. Nowadays, the market of photovoltaic system is expected to be expanded due to the introduction of RPS(Renewable Portfolio Standard). Floating photovoltaic system is a new power system using the water surface above the dam and reservoir water. Floating photovoltaic system is different from the traditional approach to the development of solar power system causing problems such as environmental degradation. This paper investigates the analysis methods of suitable site for the development of floating photovoltaic system. The A,B,C as the optimal candidates were selected in hap cheon dam. The C is the best suitable site in A,B,C considering the expected power generation. Applied methods have effectively done to develop floated photovoltaic system.

A Study on Risk of Electric Shock from Damaged Grid Connection Cable in Floating Photovoltaic System (수상 태양광 발전설비 계통 연계 케이블 손상시 감전 위험에 관한 연구)

  • Song, Young-Sang;Jeon, Taehyun
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.28 no.9
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    • pp.14-19
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    • 2014
  • Recently, many renewable energy generating businesses are ongoing progress due to the introduction of the RPS(Renewable Portfolio Standards) as well as the needs of environmentally friendly energy resources. Researches on photovoltaic system are actively being processed since the photovoltaic system is relatively easy to install and becomes commercialized in many domestic application areas. Furthermore, the floating photovoltaic system is likely to be installed more actively since the conventional photovoltaic system requires relatively large areas of land. Also, the floating photovoltaic system is more efficient than photovoltaic system installed in land due to the operation in lower temperature. However, safety problems such as electric shock could arise since the cable should be installed in the water. In this paper, the leakage current and the voltage rising are measured and analyzed for the case when the cables are damaged connecting the floating photovoltaic system to the grid.

Implementation of the 50kW Utility Interconnected Photovoltaic System Simulator (50kW급 계통연계형 태양광발전시스템의 시뮬레이터 구현)

  • Jeong, Byeong-Ho;Park, Jeong-Min;Cho, Geum-Bae;Baek, Hyung-Lae;Chung, Soo-Bok
    • Journal of the Korean Solar Energy Society
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    • v.25 no.4
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    • pp.21-27
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    • 2005
  • This paper summarizes the results of these efforts by offering a photovoltaic system structure in 50kW middle scale applications installed in Cho-sun University dormitory roof. The combination of photovoltaic system components are interconnected and system monitoring system will be summarized for the purpose of the increasing safety in this article. This paper describes configuration of utility interactive photovoltaic system which generated electric power supplies to dormitory. In order to installing the middle or large scale photovoltaic system, It must investigated the optimal design of system, compute quantity of power generation, economic rate of return and so on. In this paper represent 50kW utility photovoltaic system examination and developed simulation results. The performance of photovoltaic system has been evaluated and analyzed with simulation. The results obtained in this research will be much useful to prior investigation for installing utility interactive photovoltaic system.

The Efficiency Analysis of Tracking-Type Floating PV System (추적식 수상 태양광 발전 시스템 성능 분석)

  • Yang, Yoen Won;Jeong, Seon Ok;Shin, Hyun Woo;Lee, Kil Song
    • Current Photovoltaic Research
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    • v.1 no.2
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    • pp.122-125
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    • 2013
  • The Floating Photovoltaic System was installed on the surface of water. There were some researches in this subject. But there was not many studies with experiment on a high waterproof Floating Photovoltaic modules. The aim of this study was to analyze the performance of the Floating Photovoltaic System. For this experiment, a high waterproof Floating Photovoltaic modules were designed and applied to the module capacity of 10 kW Tracking-Type structure. The experiment results indicated the performance of the daily production is 51.6 kW; the production capacity of Floating Photovoltaic System is expected to be 23% higher than that of the ground-mounted photovoltaic system.

A Study on Operating Characteristics and Design Factors of Floating Photovoltaic Generating Facilities (수상태양광 발전시스템의 운영특성 및 설계요소에 관한 연구)

  • Kim, Hyun-Han;Kim, Kwang-Ho
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.66 no.10
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    • pp.1532-1539
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    • 2017
  • The floating photovoltaic system is a new concept in the renewable energy technology. That is similar to land based photovoltaic technology except floating system. So the system needs buoyant objects, mooring, ect, besides modules and supports, and that is able to withstand in water level changes and wind strength. Therefore the floating photovoltaic system is much different from land photovoltaic system. K-water (Korea Water Resources Corporation) has been operating two floating photovoltaic system that's capacity is 100 kW and 500 kW respectively since in summer 2011 for commercial generation, and have construction project for 2,000 kW in Boryeong multipurpose Dam and other areas. Furthermore K-water was developing a tracking-type floating photovoltaic system at Daecheong multipurpose Dam and developed and installed an ocean floating photovoltaic demonstration plant at Sihwa Lake in October 2013 for R&D. In this paper, we introduce that structure of floating photovoltaic system include buoyant structure, mooring system and auxiliary device. Especially the rope which is in part of mooring should be always maintain tension under any water level. Also we explain about structure design concept to wind load in an every loading condition and a kind of structure materials and PV structure types used in water environment. Especially ocean floating PV system is affected by tidal current and typhoon. So there are considering the elements in design. Finally we compare with floating and land photovoltaic on power amount. As a result of that we verified the floating photovoltaic system is more about 6.6~14.2 % efficiency than a general land photovoltaic system.

The Assessment of Payback Period for the Photovoltaic System in Residential Building (주거용 건물의 태양광 발전시스템 투자회수 기간 산정)

  • Kim, Myung-Chul;Ju, Jai-Wook;Seo, Gan-Ho;Lee, Kyung-Hee;Choi, Jeong-Min
    • Journal of the Korean Solar Energy Society
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    • v.27 no.2
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    • pp.87-93
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    • 2007
  • The demand for solar electric power systems, namely, photovoltaic system has grown steadily in our country over the last 10 years. However, the main obstacle against using photovoltaic system is the financial viability especially concerned with initial cost. The other factors affecting the economic viability of photovoltaic system are cost of electric energy, amount of electric energy produced by the photovoltaic system, discount rate, energy cost escalation rate, inflation rate, project life, and so on. Therefore, this thesis studies on the effect of various relating factors on economic evaluation of photovoltaic system in residential building by calculating payback period.

Implementation of the 50kW Utility Interconnected PV System Simulator and the Study of Financial Analysis (50kw급 PV시스템 시뮬레이터의 구현 및 경제성 분석에 관한 연구)

  • Lee, K.Y.;Kim, Y.G.;Shin, S.D.;Kim, H.G.;Chun, H.S.;Kim, B.C.;Min, W.K.;Kim, N.O.
    • Proceedings of the KIEE Conference
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    • 2008.11b
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    • pp.157-159
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    • 2008
  • This paper summarizes the results of these efforts by offering a photovoltaic system structure in 50kW. The combination of photovoltaic system components are interconnected and system monitoring system will be summarized for the purpose of the increasing safety in this article. This paper describes configuration of utility interactive photovoltaic system which generated electric power supplies to dormitory. In order to installing the middle or large scale photovoltaic system, It must investigated the optimal design of system, compute quantity of power generation, economic rate of return and so on. In this paper represent 50kW utility photovoltaic system examination, developed simulation results and financial analysis. The performance of photovoltaic system has been evaluated, analyzed with simulation and financial analysis results. The results obtained in this research will be much useful to prior investigation for installing utility interactive photovoltaic system.

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Performance Analysis of long term operation for photovoltaic system (태양광발전시스템의 장기운전에 의한 성능변화 분석)

  • Kim, EuiHwan;Kim, Jungsam
    • 한국신재생에너지학회:학술대회논문집
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    • 2011.05a
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    • pp.110.1-110.1
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    • 2011
  • This study analyzed the performance of long term operation photovoltaic system The 50 kWp grid connected photovoltaic system which was installed at KEPRI site in 1999 has been operated more than 12 years. In order to acquire long term operation characteristics of medium size photovoltaic system, the operation test data related on power generation electricity and capacity factor of 50 kWp system, which have been collected since 1999, were analysed. From the analysing results, 57.7 MWh in annual power generation electricity of 50 kWp photovoltaic system in 1999 has been decreased 49.1 MWh in 2005 and reached 38.0 MWh in 2010. In addition to, the capacity factor of 50 kWp photovoltaic system also showed 13.2 % in 1999, 11.2% in 2005 and finally reached 8.8% in 2011. The operation test data showed a trend of decreasing of generation electricity and capacity factor during the 12 years operation time and we guessed that was caused by solar cell performance degradation and decreasing of PCS system efficiency.

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A Performance Analysis On Designed Value Of Photovoltaic System (태양광 발전시스템의 설계치에 대한 성능 비교분석)

  • So, J.H.;Yu, G.J.;Gang, G.H.;Lee, J.K.;Seok, J.K.;Choi, J.Y.
    • Proceedings of the KIEE Conference
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    • 2002.07b
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    • pp.1319-1321
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    • 2002
  • This paper compares the performances of photovoltaic system by computer simulation with those of real photovoltaic system. We evaluate the performances of photovoltaic system by computer simulation considering system parameters of system specifications, installation and surrounding conditions etc. In the future, we will intend to develop an analysis tools and construct database for optimal design of photovoltaic system

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An Experimental Study on Plant Factory System Applied Photovoltaic System and LED Lighting (태양전지와 LED 조명을 이용한 가정용식물공장 시스템 실증시험)

  • Yang, Jun-Woo;Chung, Dong-Yeol;Kim, Jeong-Yeol;Peck, Jong-Hyeon
    • Journal of Institute of Convergence Technology
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    • v.3 no.1
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    • pp.37-40
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    • 2013
  • Plant factory industry as a new agriculture is in the spotlight. In this paper, we experimented plant factory applied photovoltaic system and LED lighting. For growing the plant, red, blue and white LED were placed into 1:4:3. Electric power generated by the photovoltaic system was supplied on DC power supply instead of AC. The designed and experimented power generation amount per day of photovoltaic system were 2,860 Wh and 2,272 Wh respectively. Plant has not been grown at the dead space of LED lighting so it is required to array LED lighting.

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