• Title/Summary/Keyword: photovoltaic system

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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.

Operationg Characteristics of 50kW Utility Interactive Photovoltaic System (목포대학교 기숙사 30[kW]급 태양광발전시스템 발전특성)

  • Moon, Chae-Joo;Lim, Joung-Min;Cheang, Eui-Heang;Park, Sang-Jin;Park, Gui-Yeol
    • 한국태양에너지학회:학술대회논문집
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    • 2008.11a
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    • pp.53-56
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    • 2008
  • A photovoltaic panel is a device that, through the photovoltaic effect, converts luminous energy into electric energy. Photovoltaic generation system used infinity of solar energy, cost of fuel is needless and there in no air pollution or waste occurrence. This paper summarizes the results of these efforts by offering a photovoltaic system structure in 30[kW] large scale applications installed in Mokpo National University dormitory roof. The status of photovoltaic system components, are inter-connection and safety equipment monitoring system will be summarized as this article. This describes configuration of utility interactive photovoltaic system which generated power supply for dormitory. In this paper represent 30[kW] utility photovoltaic system examination result.

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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 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.

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.

A Study on Modeling of Tracking-Type Floating Photovoltaic System based on Matlab/Simulink (매틀랩/시뮬링크 기반 추적식 수상태양광 발전시스템의 모델링에 관한 연구)

  • Kim, In-Soo;Oh, Sung-Chan;Kim, Yang-Mo;Choi, Young-Kwan
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.64 no.5
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    • pp.805-811
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    • 2015
  • Floating photovoltaic systems have been developed by the construction process such as design, construction, operation and management. Therefore, the power of floating photovoltaic systems has been calculated by using simple formulas and the optimal tracking interval is set by operation experience. But, flow characteristics have a decisive effect on it unlike land based PV systems. In this paper, a tracking floating photovoltaic system is modeled by using Matlab/simulink. The modeling for the floating photovoltaic system is verified through applying the flow characteristics based on actual operating data of 100㎾ class tracking floating photovoltaic.

A Study on Simulation of Photovoltaic Module for Stand-Alone Photovoltaic System (독립형 태양광시스템에 적용한 태양광 모듈 시뮬레이션에 관한 연구)

  • Hwang, Gye-Ho;Kim, Won-Gon;Yun, Jong-Bo;Moon, In-Ho;Lee, Bong-Seob;Jung, Do-Young
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.23 no.2
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    • pp.131-137
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    • 2009
  • This presents the equivalent circuit model of solar cell with irradiation and temperature condition. Based on solar cell model, the photovoltaic module specification of manufacturer compare with photovoltaic module simulation and is investigated by simulation results. The obtained results indicate that residual of simulation value and specification value about photovoltaic module is lower. There is considerable validity in simulation of photovoltaic module. Thus, the optimum simulation of photovoltaic module array are studied in this paper. This paper propose the sizing optimization of photovoltaic module array for stand-alone photovoltaic system. Also, the proposed stand-alone photovoltaic system is setting in special region(in seoul). This paper presents simulation characteristic of optimization output power in seoul.

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.

A Study on Effects of Partial Shading on PV System applied to the Offshore Plant

  • Lee, Ji Young;Yang, Hyang Kweon;Oh, Jin Seok
    • Journal of Advanced Marine Engineering and Technology
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    • v.39 no.2
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    • pp.152-158
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    • 2015
  • Unlike photovoltaic systems installed on land, photovoltaic systems applied to the offshore plant have the characteristic that is installed in a limited space. For single point mooring plant, it is advantageous in terms of a reliable power supply to be installed in different directions of photovoltaic panels, because it is not possible to identify the position of the sun by rotation of the plant itself. Differences of installation angle between photovoltaic panels make a difference of the intensity of radiation irradiated on each photovoltaic panel, and it brings loss of generation quantity due to the partial shading. In order to provide a photovoltaic system suitable for offshore plant, the modeling which contains multiple photovoltaic panels controlled by single controller is performed. Then, it was examined how the output characteristics of the photovoltaic system change about the difference of the intensity of radiation that varies depending on the altitude of the sun. Finally, through the simulation, a development model of the photovoltaic system which is suitable for offshore plant is suggested.

A Study on the Optimal PV-module Design for Efficiency Improvement of Photovoltaic System (태양광발전시스템의 효율 향상을 위한 태양전지 모듈의 최적 설계에 관한 연구)

  • Kim, Min;Lee, Gi-Je;Lee, Jin-Seop
    • Proceedings of the KIEE Conference
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    • 2001.10a
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    • pp.328-330
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    • 2001
  • The construct of photovoltaic module array, main power source of photovoltaic system, is very important to the efficiency improvement of whole photovoltaic system. Photovoltaic modules are usually connected in series or parallel to meet power capacity required. Since output characteristics of a photovoltaic module are greatly fluctuated on the variation of insolation, temperature and its type, the maximum open circuit voltage and output operating voltage of photovoltaic module array must exist in the admissible input voltage range of inverter system under any operating conditions. In this paper, we present the selection and array method of photovoltaic modules through simulation for the coupling loss reduction between photovoltaic modules and a inverter.

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