Many projects apply floating buoy systems for solar power projects

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Research team of MSc. Nguyen Ha An, Director of the Hydromechanical and Electromechanical Center (Mechanical Research Institute) has designed and mastered the technology of manufacturing buoy and anchor systems for floating solar power projects.

This is of great significance when in floating solar power projects, the floating buoy system supporting the panels and auxiliary systems accounts for about 40% of the equipment value, but Vietnam has not yet produced the floating buoy system. so it has to be imported from abroad.

According to the assessment of the Vietnam Clean Energy Association, Vietnam is one of the countries with the most sunshine in the world solar radiation map. Vietnam has a long coastline, many rivers and lakes, especially a system of operating hydroelectric lakes, which are extremely favorable conditions for the deployment of floating solar power plants. In particular, having a low impact on the land fund means reducing site clearance costs to install solar panels.

The most significant advantage of floating solar power is that it consumes less precious land resources, when it is able to exploit the free space of existing projects such as hydroelectric dams, wastewater treatment lakes, and at the same time, save money. Saves space for installing solar panels, reduces investment and increases power generation efficiency due to steam cooling.

Studies also show that floating solar cell structures contribute to a 70% reduction in water evaporation by limiting air circulation and sunlight reaching the water surface. That is also an important advantage, extremely useful in places where drought often occurs. Furthermore, shade helps prevent the growth of algal blooms that pollute freshwater sources, thereby limiting renovation costs.

Solar panels are not placed on the ground but on water, so they will be more efficient due to evaporation of cooling water. However, because the panels are placed on the water surface, it requires the durability of the floating material and fluctuations in the water level on the lakes. This requires scientists to do in-depth research on floating materials, options for building floating rafts, and options for anchoring rafts in the lake bed. Because most of the equipment is imported, the cost of floating solar power systems is very expensive, making it difficult for developing countries to build this system.

Faced with the above situation, scientists from the Mechanical Research Institute have proactively researched and mastered the technology to design and successfully manufacture floating buoy and anchor systems for floating solar power projects. To serve research and manufacturing, specialized engineering teams have researched and surveyed solar power plants in China, Malaysia, Korea, Japan, France, and Taiwan and found solutions. suitable for domestic conditions.

Calculating and designing floating buoys faces many difficulties because Vietnamese standards for calculating, designing and testing products do not yet exist. Especially the design calculations must ensure product durability of up to 25 years in all weather conditions. However, proactively overcoming difficulties, the Institute's scientists have successfully designed Vietnam's first floating buoy system with quite large water level fluctuations at the hydroelectric reservoir, from 4m to 40m. The buoy and anchor system designed and manufactured by the Institute is anchored by a specialized anchor cable system, which can adapt to all weather conditions...

Experts say that the fact that Vietnamese scientists have successfully designed, manufactured and installed the floating buoy system has recognized a new development step in the domestic science and technology industry. This result is also of great significance when according to statistics, the whole country has about more than 30 floating solar power projects promoted by domestic and foreign investors, setting up projects with a capacity of 20 - over 300MW. , concentrated mainly in the Central region, Central Highlands and the South, when in floating solar power projects, the floating buoy system supporting the panels and auxiliary systems accounts for about 40% of the project equipment value. .

The results of the project were further confirmed when the Mechanical Research Institute won the bid to carry out the project "Design, supply, installation and testing of buoy and mooring systems" with a capacity of 47,5MW for the Factory project. Da Mi solar power. The project was put into stable installation at Da Mi lake with a floating solar panel system on the lake that is synchronously connected to the buoy system and electrical and control equipment. The buoy system is anchored on the lake bed thanks to a specialized anchor cable system, ensuring adaptation to all weather conditions on the lake bed...

According to MSc. Nguyen Ha An, currently, the equipment system is being applied effectively at the Da Mi Lake floating solar power plant project with a total area of ​​56,65 hectares, total design capacity of 47,5 MWp, Electricity output is about 70 million kWh/year.

The success of Vietnamese scientists in researching, designing, manufacturing and successfully installing floating buoy systems is of great value in helping solar power projects reduce costs compared to imports, contributing economic development in localities.

See more: What is the online learning platform for grid connection of renewable energy sources?

According to cand.com.vn