저수지 내 수상태양광의 전압 강하에 의한 직류 송전 손실
Transmission Loss from Voltage Drop in a DC Cable for a Floating Photovoltaic System in a Reservoir
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
In Floating PV (Photovoltaic) systems, PV modules are installed on water by utilizing the surface of idle water such as a reservoir and multipurpose dam. A floating PV system, therefore, has the advantage of efficiency in national land use and improved energy yield owing to cooling effect compared to on-land PV systems. Owing to the limitation of installation environment for a floating PV system, the system, however, has the disadvantage of an increase in transmission distance of DC (Direct current) cables. A longer transmission distance of a DC cable results in greater power loss due to a voltage drop. This leads to a decline in economic feasibility for the floating PV system. In this paper, the economic analysis for 10 floating PV systems installed in a reservoir has been conducted in terms of a change in annual power sales according to the variation of transmission losses depending on the factors affecting the voltage drop, such as transmission distance, cross-section area of underwater cable, the presence of joint box, and PV capacity.
Abstract
In Floating PV (Photovoltaic) systems, PV modules are installed on water by utilizing the surface of idle water such as a reservoir and multipurpose dam. A floating PV system, therefore, has the advantage of efficiency in national land use and improved energy yield owing to cooling effect compared to on-land PV systems. Owing to the limitation of installation environment for a floating PV system, the system, however, has the disadvantage of an increase in transmission distance of DC (Direct current) cables. A longer transmission distance of a DC cable results in greater power loss due to a voltage drop. This leads to a decline in economic feasibility for the floating PV system. In this paper, the economic analysis for 10 floating PV systems installed in a reservoir has been conducted in terms of a change in annual power sales according to the variation of transmission losses depending on the factors affecting the voltage drop, such as transmission distance, cross-section area of underwater cable, the presence of joint box, and PV capacity.
참고문헌 (15)
- Won, C. S., "Technical trend of floating PV System", The Magazine of Korean Solar Energy Society, 13(1), pp.18~23 (2015)
- Lee, J. H., "The development of technology and market trend for Floating Photovoltaic System", Bulletin of the Korea Photovoltaic Soceity, 1(2), pp.35~36 (2015)
- Cho, C. Y., "A study for development water electric room of floating photovoltaic power", Proceedings of the 2019 Korean Solar Energy Society Spring Annual Conference, pp.80~ (2019)
- "KOREA electric code" (2018)[URL]
- "Rules for participation in supply certificates and trading market operations" (2018)[URL]
- 고영곤, "전압강하를 고려한 저압간선의 설계 알고리즘", 조명.전기설비학회논문지, 16(3), pp.84~92 (2002), 한국조명.전기설비학회
- Ko, J. W., "Safety analysis of grounding resistance with depth of water for floating PVs", Energies, 10(9), pp.1304~ (2017)
- Bhang, B. G., "Design methods of underwater grounding electrode array by considering interelectrode interference for floating PVs", Energies, 11(4), pp.982~ (2018)
- Lee D. I., "The global trend of extra high voltage power transmission and future power transmission systems", Journal of Electrical World Monthly Magazine, 453, pp.49~67 (2014)
- 강차녕, "다중 분산부하 전압강하산정 프로그램", 조명.전기설비학회논문지, 21(2), pp.64~70 (2007), 한국조명.전기설비학회
- Kang, C. N., "A study of the voltage drops computation program on multidistributed random loads", Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers Conference, pp.37~42 (2006)
- Allouhi, A., "Grid-connected PV systems installed on institutional buildings : Technology comparison, energy analysis and economic performance", Energy Build, 130, pp.188~201 (2016)
- Lee, H. G., "Design algorithm for Optimum capacity of ESS connected With PVs under the RPS program", IEEE Access, 6, pp.45899~45906 (2018)
- 나문수, "마이크로그리드에서 신재생에너지의 최적 용량 및 위치 선정", 신재생에너지, 15(1), pp.55~61 (2019), 한국신·재생에너지학회[DOI]
- Kim G. G., "Prediction model for PV performance with correlation analysis of environmental variables", IEEE J. Photovolt, 9(3), pp.832~841 (2019)