How can a photovoltaic solar power plant resist strong storms? 2018-05-10

In order to resist the invasion of natural disasters, it is necessary to control four aspects of site selection, design, installation, and operation and maintenance of photovoltaic power plants.

 

First, site selection: ensure the quality of the building

 

In recent years, with the advent of lightweight materials, the danger of these building materials being blown away by wind has also to be taken into consideration during design, preventing the roof from being torn by air currents. At present, home-distributed photovoltaic power plants are mainly installed on sloped roofs and flat roofs. The flat roof also covers the concrete flat roof, color steel plate flat roof, steel flat roof, ball node roof and so on.

 

For the installation of photovoltaic power plants are also particular about the installation site, installation orientation, installation angle, load requirements, and arrangement and spacing. From this point of view, the safety of site selection for photovoltaic power plants is mainly in the following three aspects: First, load-bearing. To achieve 38KG / square meter; the second is life. The life of the roof is greater than the design life of the photovoltaic. The third is not to make a crisis. Try to avoid the tuyere and the nozzle.

 

Second, the design: to improve the strength of the component design suitable windshield

 

From the design of the power station, while balancing the costs of photovoltaic power plants and the benefits of power generation, the strength design requirements of photovoltaic supports and component briquettes, etc., can be appropriately increased, and the component inclination with better wind resistance capability can be reasonably selected. In addition, consider designing suitable wind deflectors. The wind deflector is fixedly installed on the rear pillar of the bracket system, and a plurality of guide openings are opened on the panel, which has the function of guiding the air flow and reducing the wind pressure of the assembly. The force of the beam of the support system is reduced, the pull-out force of the foundation is reduced, and the structural safety factor of the photovoltaic power station is increased. However, the force of the rear column increases, the axial shear force of the foundation increases, and the force of the foundation needs to be checked. In designing, fully considering the strength of photovoltaic supports and components and constructing suitable wind deflectors can effectively reduce the damage of strong winds to photovoltaic power plants.

 

Third, the installation: choose a solid bracket scientific and rational installation

 

The majority of photovoltaic power plant wind resistance capacity is determined by the strength of the photovoltaic stent, stents are generally made of aluminum alloy, carbon steel and stainless steel. In theory, the maximum wind resistance capacity of the PV bracket is 216km/h, and the maximum wind resistance of the tracking bracket is 150km/h (more than 13 wind forces). But why did the stand known to be capable of resisting the typhoon of the thirteenth grade were "blown off" when they encountered less than 13 gale winds?


Some  Solar installation company in order to save steel, three rows of photovoltaic modules are installed on the flat roof, and the front row and the rear row are not connected by beams, and the fixed piers at the bottom of the bracket are too light in weight and should be made rectangular and thickened. Pier weight. The above details have not been handled well, and the typhoon is coming. It must be flying! Moreover, when installing, it is necessary to pay attention to the best installation of fixed cables and anti-rust paint to extend the time of the stent against the storm.

 

Fourth, operation and maintenance: smart and efficient operation and maintenance improve risk awareness

 

During operation and maintenance of the photovoltaic power plant during normal operation, the rooftop power station should regularly inspect the building to ensure the quality of the building on which the photovoltaic project is based. Check the strength of photovoltaic modules, photovoltaic supports, and the structure of the inverter room at any time to prevent them from becoming dull.

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