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En
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Offshore photovoltaic power generation is a new way of energy utilization and resource development model, is the "photovoltaic power station" moved from the land to the sea. Using photovoltaic technology to build power stations on the ocean, it has the characteristics of high power generation, less land occupation, and easy to combine with other industries.
In recent years, driven by the "double carbon" background, the photovoltaic industry has been greatly developed. Relevant data show that China's mainland coastline is 18,000 km long, the total offshore area is about 4.7 million km², of which the available sea area is more than 3 million km². In theory, nearly 700 GW of offshore PV can be developed, which is a unique natural condition for the development of the coastal PV industry.
The development of coastal photovoltaic industry is conducive to filling distributed photovoltaic, so as to achieve self-production and self-marketing in coastal areas. Now the coastal photovoltaic industry has become a new economic force that is rapidly rising in coastal economically developed areas, and has played a crucial role in the energy structure (combined with Marine aquaculture, wind power, etc.) environment.
Compared with onshore PV, Marine PV has natural environmental advantages, the water surface is open without shelter, the sunshine is longer and can be used fully, which can significantly improve the power generation. At present, the power generation of water photovoltaic can be increased by 5% to 10% compared with land photovoltaic.
The offshore photovoltaic bracket must be able to withstand the complex natural conditions in the Marine environment, such as strong winds, high waves, and seawater corrosion. Therefore, its design materials and structure need to have excellent corrosion resistance and weather resistance to ensure that the bracket can operate stably in harsh environments for a long time.
The offshore photovoltaic bracket needs to be able to resist the influence of wind waves, tides, and other natural forces, and consider the force distribution and stability to ensure that it can be firmly fixed at sea under the influence of natural forces, and is not easy to deform or damage when subjected to external forces such as wind load and surge.
The installation and maintenance of offshore photovoltaic mounting system is more complex and difficult than that of terrestrial photovoltaic power stations. Therefore, the design of the mounting system needs to fully consider the convenience. At present, most of the modular design is used to facilitate quick installation and disassembly, at the same time, it is also necessary to be equipped with the necessary maintenance channels and safety facilities to ensure the smooth maintenance work.
When designing and manufacturing offshore photovoltaic mounting, it is necessary to fully consider the impact on the marine ecological environment. Use environmentally friendly materials and coatings to reduce the emission of harmful substances; Optimize the layout and shape of the scaffolds to reduce the damage to marine habitats; Reasonable arrangement of construction time and way to reduce the disturbance of Marine ecology.
The manufacturing and installation costs of offshore photovoltaic mounting systems are relatively high, but the economic and environmental benefits it brings are also significant. Through large-scale deployment of offshore photovoltaic power stations, marine space resources can be effectively utilized and the utilization rate of renewable energy can be improved. At the same time, offshore photovoltaic power stations can also integrate with marine fisheries, tourism and other industries to achieve a win-win situation of economic and ecological benefits.
CN
JP