What are the main components of a floating PV power generation system?
The main components of floating PV power generation systems are floating pv mounting systems, PV modules, special cable inverter and box transformer and other electrical equipment, buoy, anchor lock system. Pontoons can be divided into fixed pontoons, azimuth tracking pontoons.
The current design trend is to carry out the design and construction of floating PV power generation systems in the form of floating components.
The basic principle of floating module is as follows: the waterproof PV module is installed on the floating frame and flexible connection between the components. Use a waterproof junction box for junction, and then send the direct current to the inverter and box transformer.
The entire floating PV system
can be anchored to the surface by anchor cables that can be adjusted to submergence the system in extreme weather conditions to avoid damage.
The floating module is suitable for most of the water, especially the sea. Its advantage is that the PV module is in contact with the water. The temperature is lower, and the output power is higher.
What level is China's floating PV power generation technology in the world?
The UK was the first country to study floating PV power stations, but they have not been commercialized. Only in 2016 did 12.5 megawatts of floating PV power stations come online in the United States.
Floating pv technology has been advancing in Asia and Japan. In recent years, South Korea, India, the United States, Australia, Brazil and other countries are also focusing on floating PV power generation systems.
The reason is simple: water is cheaper than land, and floating pv systems can be better promoted. In addition, the protection of water resources is also one of its advantages.
Due to its early start, Japan is currently the country with the largest number of practical applications of floating PV power stations in the world. However, limited by a variety of factors, the single capacity is always small, which is one of the biggest problems.
China's PV power generation technology is leading the world, while floating PV power generation started late. However, the development is so rapid. At present, China has built the largest single floating PV power station in the world, and has been connected to the grid.
The world's largest floating PV power plant is located in Dezhou, Shandong province, for the Dingzhuang reservoir PV power project. The Dingzhuang reservoir power generation project in Dezhou has an investment of about 819 million yuan, with a total capacity of 320 megawatts and a construction of 200 megawatts in the first phase. After completion, it will become the largest single floating PV power station in the world. The data shows that the 200 MW PV power generation project of Dingzhuang Reservoir in Texas is designed using the world's largest standard square arrays -- 4 MW and 8 MW square arrays.
The high-density polyethylene floating tank + supported floating PV system is adopted. The sink box, monocrystalline silicon double glass battery module and group series inverter are fixed on the floating body.
This floating PV is suitable for deep water, and does not damage the water body. It is environmental. It can save the basic cost, and the construction period is short. After completion, the project will generate about 221 million KWH of electricity annually, bringing remarkable economic and social benefits.
According to statistics, the maximum power load of Shandong Dezhou power grid in 2020 is 4.437 million kW. Under the ideal peak power generation state, a floating PV power station can solve about 1/15 of the power problem of The Texas power grid, which is quite remarkable!
Internationally, Europe's largest floating PV power plant, with a capacity of 27.3 MEGA watts on an abandoned sand mining lake in the Netherlands, has been successfully connected to the grid. The plant is currently the largest floating PV power project outside China.
The construction of floating PV power plants in Japan started early, but they are often affected by natural disasters such as typhoons. Recently, Japan announced the completion of the reconstruction of the largest floating PV power plant after the disaster, which is 13.7 MW floating PV power plant in Yamakura, Japan. However, it has not yet resumed commercial operations.
Other Asian countries are also jumping into floating PV, and Singapore has begun construction on a 60-megawatt floating PV plant in a reservoir, which is expected to be completed in 2021.
According to the agency, the cumulative installation of floating PV power stations around the world will reach about 4,100 megawatts by 2024. Although floating PV power generation in PV installed capacity accounted for only a small part, I believe that with the development of the industry, the reduction of the cost of related components, as well as the accumulation of design and construction operation experience, floating PV power generation will soon enter the fast track of development. After all, as long as you have a small pond, you can throw a "board" into the water to generate electricity.