• Title/Summary/Keyword: PV power generation system

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An Analysis of the Impact of the PV generation on Fuse Coordination (퓨즈협조에 대한 태양광 발전의 영향 분석)

  • Cho, Hae-In;Seo, Hun-Chul;Kim, Chul-Hwan
    • Proceedings of the KIEE Conference
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    • 2009.07a
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    • pp.474_475
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    • 2009
  • Recently the grid-connected PV system is increased in the power system. According to this trend, protection coordination issues are becoming more important when the PV generation is connected to the power system. In this paper, we model the PV system using EMTP/ATPDRAW and analyze the impact of the PV generation for the fuse coordination.

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Novel Concept of Shunt Active Filter Function Added in PV Generation System (엑티브필터 기능을 추가한 새로운 태양광 발전시스템의 제안)

  • Kim, Bong-Tae;Park, Min-Won;Seong, Ki-Chul;Yu, In-Keun
    • Proceedings of the KIEE Conference
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    • 2001.10a
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    • pp.296-300
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    • 2001
  • Novel concept of shunt active filter (AF) function added in Photovoltaic (PV) generation system is described in this paper. So far, for the PV generation system has been treated as one of harmonic sources to the power distribution systems, not only a PV system combined with AF but also AF systems using PV module as their power source have never been discussed. The basic structure and control strategy of the PV-AF system are, for the first time, introduced in this work. In order to stabilize the output current of voltage source inverter (VSI), the reference voltage MPPT control is applied. Simulation analysis shows that it is possible to combine AF function to the three-phase grid-connected PV generation system without any physical difficulties, and the performance of the proposed PV-AF system is acceptable and stable as well.

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Harmonic Impact Studies of Grid-Connected Wind Power and PV Generation Systems (계통연계 풍력 및 태양광발전시스템 고조파 영향 검토)

  • Lee, Sang-Min;Jung, Hyong-Mo;Yu, Gwon-Jong;Lee, Kang-Wan
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.58 no.11
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    • pp.2185-2191
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    • 2009
  • Wind power and photovoltaic(PV) generation systems are the fastest growing sources of renewable energy. The nonlinear devices, such as power electronic converter or inverter, of wind power and PV generation systems are the source of harmonics in power systems. The harmonic-related problems can have significant detrimental effects in the power system, such as capacitor heating, data communication interference, rotating equipment heating, transformer heating, relay misoperation and switchgear failure. There is a greater need for harmonic analysis that can properly maintain the power quality. By measuring harmonics of existing wind power and PV generation systems as harmonics modeling, the studies were made to see the harmonic impact of grid-connected wind power and PV generation systems.

A Study on the Comparison of the PV Module Generation from Daylight Irradiation and Indoor Lighting Savings with Lighting Simulation (일사량 분석을 통한 PV모듈 발전량과 시뮬레이션을 이용한 실내 조명에너지 절감량 비교)

  • Park, Yoon-Min;Hong, Seong-Kwan;Choi, An-Seop
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.24 no.12
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    • pp.17-24
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    • 2010
  • Recently, BIPV system which is good enough for maintenance and functions with the shading system is being used. However BIPV system with the shading system is different from existing PV module because of using flexible PV module. Prior to the application of the BIPV system, the clearness index was calculated by Erbs et al.(1982) and analyzed for the amount of electric power generation of sky irradiance with measured data. To predict electric lighting energy savings in daylit space, electric lighting power savings with amount of PV module electric power generation was compared by using Relux 2010 software in this study.

An Analysis of Optimal Installation Condition and Maximum Power Generation of Photovoltaic Systems Applying Perez Model (Perez Model을 적용한 태양광 시스템 별 최적 설치 조건 및 최대 발전량 분석)

  • Lee, Jay-Dy;Kim, Chul-Hwan
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.61 no.5
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    • pp.683-689
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    • 2012
  • Photovoltaic(PV) system is one of power generation systems. Solar light in PV system is like the fuel of the car. The quantity of electricity generation, therefore, is fully dependent on the available quantity of solar light on the system of each site. If a utility can predict the solar power generation on a planned site, it may be possible to set up an appropriate PV system there. It may be also possible to objectively evaluate the performances of existing solar systems. Based on the theories of astronomy and meteorology, in this paper, Perez model is simulated to estimate the available quantity of solar lights on the prevailed photovoltaic systems. Consequently the conditions for optimal power generation of each PV system can be analyzed. And the maximum quantity of power generation of each system can be also estimated by applying assumed efficiency of PV system. Perez model is simulated in this paper, and the result is compared with the data of the same model of Meteonorm. Simulated site is Daejeon, Korea with typical meteorological year(TMY) data of 1991~2010.

Analysis of Power Generation Characteristics of Agricultural Potovoltaic Systems (농업 태양광의 발전 특성 분석)

  • Sunho, Yu;Eui-Chan, Lee;Seungwoo, Son;Bongsuck, Kim
    • KEPCO Journal on Electric Power and Energy
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    • v.8 no.2
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    • pp.151-157
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    • 2022
  • The transition to renewable energy, especially the expansion of photovoltaic (PV) generation, has become a global megatrend that can no longer be reserved. However, since the site for PV is limited, it is necessary to use the land efficiently. As an alternative, the concept of utility scale agricultural PV(UAPV) is a technology that continues farming in the lower part and installs PV in the upper part of farmland to efficiently use the land. Therefore, for UAPV, the growth of crops in the lower part and the optimal operation of PV in the upper part are important. In this, we analyze the characteristics of the upper PV generation system in the UAPV based on the empirical results under various conditions, and propose future research directions of the UAPV.

Operational Characteristic Analysis of a Single-Phase PCS for PV Power Generation System with Active Filter Function (엑티브 필터 기능을 가지는 단상 태양광 PCS의 운전특성 해석)

  • Jang, Seong-Jae;Seo, Hyo-Ryong;Kim, Gyeong-Hun;Park, Sang-Soo;Kim, Sang-Yong;Park, Min-Won;Yu, In-Keun
    • Proceedings of the KIEE Conference
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    • 2009.07a
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    • pp.1051_1052
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    • 2009
  • This paper deals with operational characteristic analysis of a single-phase PCS (Power Conditioning System) for PV (Photovoltaic) power generation system with AF (Active Filter) function. The theory of dq transformation has been applied to the control strategy of a single-phase PV power generation system to implement the AF function. Application of the virtual two-phase using phase-shift makes it possible to use the dq theory for the single-phase PV power generation system. The authors are sure that the proposed system is a very useful to compensate harmonics caused by nonlinear loads in a single-phase utility system. In this paper, not only a theoretical aspect of the single-phase PV-AF system is discussed, but also the DSP (Digital Signal Processor) based experiment results are presented to demonstrate the effectiveness of the single-phase PV-AF system.

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The Application of Monitoring System Methods of Photovoltaic-Wind Power Generation for Railway Switching Point Heating Using LabVIEW (LabVIEW를 이용한 철도 선로전환기 융설용 태양광-풍력 발전 모니터링 시스템의 적용 방법)

  • Kim, Dae-Nyeon;Kim, Deok-Hyun;Choi, Jeong-Won
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.27 no.10
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    • pp.9-14
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    • 2013
  • The monitoring system is an absolutely required system for improving a performance to consider the situation for the hybrid generation of the photovoltaic (PV) and wind power (WP) energy experimental research complex. This system is to monitor with the railroad switching point heating system using LabVIEW to the hybrid generation of the PV and WP. The monitoring system of this paper is a program monitoring the hour, day and total of the voltage and current that made from the hybrid generation of PV and WP. In experiment, we acquired the power data according to time at the day of PV and WP. We have confirmed the possibility of the real time monitoring system using LabVIEW with the railroad switching point heating system as the hybrid generation of the PV and WP.

Battery integrated PV DC-Module for power optimization in PV-Battery Hybrid generation system (태양광-배터리 복합발전시스템의 전력 최적화를 위한 배터리 집적형 PV-DC 모듈)

  • Choi, Cheul-Woong;Choi, Bong-Yeon;Noh, Yong-Su;Ji, Young-Hyok;Lee, Byoung-Kuk;Won, Chung-Yuen
    • Proceedings of the KIPE Conference
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    • 2012.11a
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    • pp.147-148
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    • 2012
  • Recently, hybrid generation systems combine multiple energy sources or storage components to optimize the characteristics of the individual energy sources. In this paper, a battery integrated PV power optimizer for PV-battery hybrid power generation system is proposed. PV system using proposed topology can easily increase battery capacity and remove high power bidirectional converter to control bulky battery bank.

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Analysis of Stability of PV System using the Eigenvalue according to the Frequency Variation and Requirements of Frequency Protection

  • Seo, Hun-Chul;Kim, Chul-Hwan
    • Journal of Electrical Engineering and Technology
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    • v.7 no.4
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    • pp.480-485
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    • 2012
  • Use of photovoltaic (PV) power generation system will become more widespread in the future due to anticipated cost reduction in PV technology. As the capacity of PV systems increases, a variation of power system frequency may prevent the stable output of PV system. However, the standard for the frequency protection of distributed generation in Korea Electric Power Corporation (KEPCO)'s rule does not include the setting of frequency protection. Therefore, this paper analyzes the correlation between the frequency protection requirements and the stability of grid-connected PV system for the adjustable operating setting of frequency protection. The distribution system interconnected with 3 MW PV system is modeled by Matlab/Simulink. The various values of frequency are simulated. For studied cases, the stability of PV system is analyzed. It is concluded that the setting of frequency protection is necessary to consider the stability of PV system.