Empirical study of Establishing Floating Substation Standards for Floating Photovoltaics |
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학술지명 EUPVSEC 2025
저자 정준기,조현식,양동건,이지은
발표일 2025-09-25
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To respond to the climate crisis, low-carbon green growth technologies for carbon neutrality are being actively developed in all industrial sectors. Among them, PV has the highest percentage and is very important for achieving a carbon neutral scenario. However, land PV can be subject to many restrictions for installation such as countries with small land area and high latitudes. In addition, environmental damage may occur as forests are cut down to install PV power plants. To overcome these restrictions of land-based PV and to use land efficiently, so-called Floating Photovoltaic (FPV), which installs PV on the water surface. The global installed cumulative capacity of FPV by 2022 is 5.7GW, the expected installed capacity by 2030 is 60GW, and the expected potential is about 3~7TW. However, as floating PV power plants become larger in scale, the number of low-voltage DC underwater cable lines increases, which increases project costs and reduces power transmission efficiency. To solve these problems, the new FPV business model was developed in which the power generated from PV modules are converted to AC and boosted to the distribution level to enable grid connection by moving the electrical room on land to the water surface near the FPV. But there are no international standards for floating substations. Therefore, this paper introduces an empirical study to establish international standards for floating PV with floating substations. For the development of international standards, the results of the review from various perspectives such as buoyancy, power conversion, and operation of the demonstration plant are described. |