Abstract: In view of the defects and shortcomings of the traditional plastic floating system, such as low strength, poor durability, and easy to sink, etc, this paper presented a new type of composite floating system for photovoltaic power station. A new type of UPVC-FRP composite tube floating system was designed and manufactured by using glass fiber reinforced composite material and UPVC plastic tube combined with hand paste forming process. At the same time, the process of manufacturing and installation was produced, and the buoyancy of static load was analyzed. By adopting fluid-solid coupling FEM, the hydrodynamic characteristics of UPVC-FRP composite tube floating system caused by wind, wave and current were studied. The reliability of the FEM in this paper was verified. The results showed that the maximum draft depth was 0.346 m, which meet the buoyancy requirements of floating body under static load combination. In addition, the composite tube floating system square array can greatly improve the effect of the floating system against wind, wave and flow damage.

Key words: photovoltaic power station, composite floating system, static buoyancy analysis, dynamic analysis of fluid-solid coupling