The world's largest open-air offshore photovoltaic project, the HG14 million kilowatt offshore photovoltaic project of Guohua Investment Shandong Branch of China Energy Group, has been successfully connected to the grid for power generation. This is not only a milestone for China's first megawatt offshore PV project to be officially put into operation, but also the world's first gigawatt offshore PV project successfully connected to the grid, which plays an important leading and exemplary role in the large-scale development of the global offshore PV industry.
Project Overview: A combination of innovative design and construction technology
The project is located in the open sea area in the east of Dongying City, Shandong Province, with a project area of 1,223 hectares and an installed capacity of 1GW, which has been approved by the State Council. The successful implementation of this project marks a key step in China's technological innovation and market application in the field of offshore PV, and also provides valuable experience for the large-scale development of global offshore PV.
During the construction of the project, the team innovatively adopted the construction technology of large-scale offshore steel truss platform fixed pile foundation. This technology enables offshore PV platforms to work stably in harsh marine environments, greatly improving the stability and safety of the project. A total of 2,934 photovoltaic platforms will be installed throughout the project, each measuring 60 meters long and 35 meters wide, ensuring an efficient photovoltaic generation area.
In addition, the project also applied 66 thousand volt submarine cable and terrestrial cable large-capacity and long-distance transmission lines for the first time in the domestic photovoltaic field. This design solves the problem of efficient transmission from offshore power generation to land transmission, and adopts the scheme of block power generation and centralized grid connection, so that offshore photovoltaic power can be transmitted to the grid more stably and quickly.
Figure: Huawei's 3,000 inverters help the world's largest offshore PV project be successfully connected to the grid (image from Network)
Technological innovation and the application of Huawei's inverters
One of the important technological innovations of the project is the application of more than 3,000 Huawei SUN2000-300KTL inverters in the power generation unit. Each power generation unit is equipped with dozens of 300KTL inverters, which can not only convert the direct current emitted by the photovoltaic modules into alternating current, but also connect to the nearby 220kV photovoltaic booster station by boosting to 66kV to ensure the efficient and stable transmission of electric energy.
Huawei's inverter has shown great advantages in the project with its excellent performance and higher conversion efficiency. Compared with similar products, Huawei's inverter power generation has increased by more than 1%, which plays a crucial role in ensuring the project's power generation revenue. In addition, Huawei's inverter is equipped with a L5 MBUS power carrier communication function, which enables the inverter to transmit communication data through AC cables, reducing the labor and material investment in laying traditional communication lines, thereby improving the overall efficiency of the project.
What's more, the Huawei 300KTL inverter is also equipped with an intelligent fan dust removal function, which ensures that the inverter does not need to be shut down for operation and maintenance throughout its life cycle, reducing downtime and maintenance work caused by contaminants such as seabird feathers and dust. This design significantly reduces operating costs and increases system reliability.
Project benefits: a win-win situation for green energy and economy
The completion and commissioning of the project will greatly promote the use of green energy and environmental protection. It is estimated that the annual power generation capacity of the project can reach 1.78 billion kWh, which is equivalent to saving about 503,800 tons of standard coal and reducing carbon dioxide emissions by about 1.3447 million tons per year. This will make an important contribution to China's and the world's carbon reduction goals, and promote the transformation of the global energy structure to a green and low-carbon direction.
More innovatively, the HG14 million kilowatt offshore photovoltaic project also realizes the three-dimensional comprehensive development and utilization of fishery aquaculture and photovoltaic power generation. The project adopts a new model of "power generation at the top and aquaculture at the bottom", and the sea area below the photovoltaic platform is used for fishery farming without affecting offshore photovoltaic power generation. This model not only optimizes the use of space at sea, but also provides a new source of income for local fishermen. It is estimated that the annual income of fishery farming will exceed 27 million yuan.
Future outlook: a new benchmark for the global offshore PV industry
The successful grid-connected power generation of the HG14 million kW offshore PV project not only demonstrates China's technical strength in the photovoltaic field, but also sets a new benchmark for the development of the global offshore PV industry. With the increasing global demand for clean energy, offshore PV, as a form of renewable energy with great potential, is bound to play an important role in the future energy mix.
The successful implementation of the project also provides a strong model for offshore PV development in other countries and regions. With the continuous advancement of technology and the gradual reduction of costs, there will be more and more offshore photovoltaic projects in the future, driving the process of global energy transition.
Conclusion
The successful grid-connected HG14 million kilowatt offshore PV project marks an important step forward in the global green energy sector. Through innovative technology applications, strong international cooperation and environmentally friendly project design, the project has not only made an important contribution to China's green transformation, but also provided valuable experience for the development of global renewable energy. As PV technology continues to advance, there is reason to believe that more offshore PV projects will emerge in the future, injecting new impetus into the global energy revolution.
