Introduction to solar photovoltaic power plant brackets

Characteristics of photovoltaic brackets

In actual new photovoltaic power plant projects, photovoltaic brackets have the following characteristics:

Photovoltaic brackets must be used for long-term use in special natural environments. It has strong physical properties such as air pressure resistance, snow pressure resistance, seismic resistance, and corrosion resistance. To ensure normal operation in extreme natural environments such as wind, rain, snow, and earthquakes, the usage period is generally set to 25 years or more.

The photovoltaic bracket must consider all specifications of the new project. The key to the design of photovoltaic power plants is spatial structure design, and the overall spatial structure design of photovoltaic power plants is based on the completion of photovoltaic brackets, playing a key role in the basic construction of photovoltaic power plants. The product quality, design, and installation of photovoltaic brackets should comply with the local climate and natural environment, residential building specifications, and power engineering design specifications of the new project. Selecting suitable solar power generation support points and scientifically standardized design and installation can not only reduce engineering costs, improve power generation efficiency, but also reduce mid to late stage operation and maintenance costs.

Classification of photovoltaic brackets

Based on whether it can track the rotation of sunlight, photovoltaic brackets can be divided into fixed brackets and tracking brackets. In solar power generation equipment, fixed brackets and tracking brackets must be designed for new projects. Firstly, the basic design of anchor rod support must be based on the hydrogeological survey report of the previous work; Secondly, based on the load-bearing capacity of the bracket, conduct pull-out experiments on the upright pole to clarify the foundation form and upright pole method of the bracket. In addition, based on different national industry standards, wind loads, snow loads, and other climatic conditions of structural components in different engineering projects, clarify the overall bracket design; Finally, based on the component type, component series number, inverter power supply, bus duct box and other solar power generation components in the solar power generation equipment, a reasonable layout of the relative brackets and a single bracket design will be carried out.

Fixed brackets can be divided into general fixed brackets and fixed adjustable brackets; Tracking brackets can be divided into flat single axis tracking brackets, dual axis tracking brackets, and oblique single axis tracking brackets.

For photovoltaic power stations with fixed brackets, local terrain, climate and other standards will be integrated at the beginning of the design, and the structural components will be fixed in a special perspective to ensure that they can receive a large amount of solar radiation. After the structural components are fixed, it is not easy to adjust them frequently. For fixed adjustable brackets, the orientation of the components will be manually adjusted every year according to the season and lighting standards. The fixed bracket is of excellent quality and low price, with good reliability. The initial project investment is low, but the utilization rate of solar power generation is low.

In the solar power generation equipment of the tracking bracket, adjusting the orientation of the components according to the sunlight exposure standard can reduce the angle between the components and the natural light, obtain a large amount of solar radiation, and reasonably improve the efficiency of power generation. Photovoltaic power stations that are suitable for tracking must increase the initial project investment cost, bear certain operational risks and maintenance costs.

The specific power generation data indicates that flat single axis tracking brackets, oblique single axis tracking brackets, and dual axis tracking brackets can reasonably increase the power generation of photovoltaic power plants. If the tracking bracket is closely integrated with both components, it can also have a cumulative practical effect on improving power generation capacity. In the long run, it is beneficial for the owners of photovoltaic power station communities to obtain significant economic benefits and reduce power engineering costs.

For tracking bracket products, in addition to the same mechanical equipment design, production processing, and hot-dip galvanizing processing technology as fixed brackets, there are also motor control design, driver design, connection optimization algorithms, and supporting facility mechanical processing technology.