Photovoltaic supports are a crucial component of photovoltaic power stations, bearing the primary power generation units. Therefore, the choice of supports directly affects the operational safety of photovoltaic modules, their breakage rate, and the investment returns of the construction project.
When selecting photovoltaic supports, different materials must be chosen based on varying application conditions. Depending on the materials used for the main load-bearing components of photovoltaic supports, they can be categorized into aluminum alloy supports, steel supports, and non-metallic supports (flexible supports). Among these, non-metallic supports (flexible supports) are less commonly used, while aluminum alloy supports and steel supports each have their distinct characteristics.
Non-metallic supports (flexible supports) utilize steel cable prestressed structures to address technical challenges posed by spans and height limitations in scenarios such as wastewater treatment plants, complex mountainous terrains, roofs with low load-bearing capacity, agro-photovoltaic projects, hydro-photovoltaic projects, driving schools, and highway service areas. These challenges often make it impossible to install traditional support structures. Flexible supports effectively overcome the shortcomings of existing photovoltaic power stations in valleys and hilly areas, such as high construction difficulty, severe sunlight obstruction, low power generation efficiency (approximately 10%-35% lower compared to flat-terrain photovoltaic power stations), poor-quality support structures, and structural complexity.
In summary, non-metallic supports (flexible supports) offer broad adaptability, flexible application, effective safety, and the economic advantage of optimal secondary land utilization. They represent a revolutionary innovation in photovoltaic support technology.
A well-designed photovoltaic support system can enhance its resistance to wind and snow loads. By leveraging the load-bearing characteristics of the photovoltaic support system, its dimensional parameters can be further optimized to save materials and reduce the overall cost of the photovoltaic system.
The main loads acting on the foundation of photovoltaic module supports include: the self-weight of the supports and photovoltaic modules (permanent load), wind load, snow load, temperature load, and seismic load. Among these, wind load is the dominant controlling factor. Therefore, the foundation design must ensure stability under wind load conditions. Under wind load, foundations may experience failures such as uplift or fracture, and the design must prevent such damage from occurring.
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