1.Solar photovoltaic flexible support is to install photovoltaic panels on rows of steel cables, and the two ends of the steel cables are connected by rigid supports. At the same time, in order to reduce the bending moment of the top supports at both ends, external tensioning cables or internal rigid diagonal supports are mostly used at both ends of the supports. As a main load-bearing member, the cable (steel strand) has large flexibility, light weight and high rigidity. Prestressing provides it with sufficient stiffness. The cable structure has the following characteristics. 1) It can only bear tension, not pressure. 2) The stiffness of the cable mainly comes from the geometric stiffness, which is mainly provided by the prestress. 3) The tension state exhibits linear characteristics, while the remaining states exhibit nonlinear characteristics. 4) The cable will produce stress relaxation and loss.

2.Advantages of flexible supports Due to the characteristics of the main tension of the cable, its material strength can be fully exerted, and the flexible solar photovoltaic support has become the first choice for designers. 1) The span is large and the span range is flexible and adjustable. 2) Maximize the utilization of land space. 3) The operation mode is flexible, the ventilation performance is good, and the power generation efficiency is high. 4) Compared with the traditional photovoltaic support, the flexible photovoltaic support has better crack resistance. 5) The amount of steel used is small, the load-bearing is small, and the cost is low. 6) The site foundation requirements are small, and the pre-installation is strong, which greatly shortens the construction period.

3. The scope of application of the flexible support The solar flexible support is flexible and adjustable and has a small footprint, which makes it have a wide range of applications. Complex terrains such as tidal flats, fishing ponds, sewage plants, complex mountains, barren slopes and pools can all be used, and under the premise that the country vigorously advocates the complementarity of fishery and photovoltaics and agriculture and photovoltaics, flexible photovoltaic supports have broad application prospects .

4.Flexible Support Structure System The flexible photovoltaic support structure system is divided into two parts: flexible system and support system. The flexible system consists of prestressed suspension cables, stabilizing cables, component fixing fixtures, photovoltaic modules, etc.; the support system consists of foundations (including independent foundations and pile foundations), steel columns, steel beams, and support systems (including stay cables and diagonal supports) etc. composition. According to the force characteristics of the solar photovoltaic support, diagonal stay rods (cables) and diagonal supports are usually set on both sides. When the photovoltaic modules are subjected to wind load or snow load, the cable is deformed by force, the steel column resists the vertical force, and the stay cable or diagonal support resists the horizontal force. For the photovoltaic power station of the sewage treatment plant, due to the relatively large span, a steel truss is usually set between the steel column and the middle column to reduce the span and thus reduce the deflection. For complex terrain on hillsides, stay cables (steel strands) are usually installed in accordance with the slope of the mountain, and then photovoltaic modules are laid, which not only utilizes the natural topographical conditions, but also achieves aesthetic effects.