Different types of photovoltaic media have their own characteristics and applicable scenarios. Here is a comparison of several common types of photovoltaic mounts:
1 Ground-mounted photovoltaic mounts and rooftop photovoltaic mounts. :
- Photovoltaic ground support: suitable for large-scale photovoltaic power plants, which can use a larger area, have a large number of facilities and generate power generation high, but they occupy a large area and require relatively high construction and maintenance costs.
- Rooftop photovoltaic rack: suitable for installation on the roofs of buildings, which can utilize the free space of the building. The installation quantity is relatively small, the energy production is small, but the footprint is small. and construction and maintenance costs are low.
2. Photo supportFixed ovoltaic vs sloping photovoltaic support:
- Fixed photovoltaic support: The angle of the support is fixed, suitable for ground and roof installation. , easy to install, the cost is lower, but the power generation efficiency is affected by the season and lighting angle.
- Sloped photovoltaic bracket: The angle of the bracket is adjustable and is suitable for ground and roof installation. The angle of the bracket can be adjusted according to the season and light angle to improve power generation efficiency, but save construction and adjustment costs. are high.
3. Steel photovoltaic bracket vs aluminum alloy photovoltaic bracket:
- Steel photovoltaic bracket: high strength, good stability, suitable for large-scale photovoltaic power station, but it is heavier, requires higher transport and installation costs andt is susceptible to corrosion.
- Aluminum alloy photovoltaic bracket: light weight, good corrosion resistance, suitable for roof installation, but the resistance is relatively low and the application scope is narrow.
4. Single-axis tracking photovoltaic bracket vs two-axis tracking photovoltaic bracket:
- Single-axis tracking photovoltaic bracket: The bracket can be along the direction of the horizontal or vertical axis Adjustments are made to follow the horizontal movement of the sun and improve the efficiency of electricity generation, but the cost is high and maintenance is complicated.
-Two-axis tracking photovoltaic bracket: The bracket can be adjusted along the horizontal and vertical axes to track the horizontal and vertical movement of the sun. It has higher power generation efficiency, but it is the most expensive. and the most complicated to maintain.
In summary, the cChoosing a suitable type of photovoltaic support should take into account factors such as installation environment, power generation needs, cost budget, etc., and make a comprehensive evaluation and selection in depending on the specific situation.
Case of the photovoltaic support on Kesheng roof
What is the minimum meter to erect the photovoltaic support?
The formula for photovoltaic support is as follows
1. Maximum bearing capacity formula: Fmax = σ × A. Among them, Fmax represents the maximum bearing capacity, σ represents the yield strength of the support material, and A represents the cross section of the support.
2. Support weighting formula: W = ρ × V. Among them, W represents the weight of the stent, ρ represents the density of the stent material, and V represents the stent.volume of.
3. Tilt angle calculation formula: β = φ + λ - θ. Among them, β rrepresents the tilt angle of the solar panel, φ represents the latitude of the solar panel, λ represents the orientation of the solar panel due east is 0 degrees, due south is 90 degrees, due west is 180 degrees, due north is 270 degrees and θ represents the altitude angle of the sun.
Detailed information
Photovoltaic power generation is a way of using solar energy to convert light energy into electrical energy, while that photovoltaic supports and components are essential components of photovoltaic energy production systems. Essential component. In photovoltaic power generation systems, the design and calculation of photovoltaic supports are very important, because they are directly related to the stability and efficiency of the installation of photovoltaic modules.
When calculating photovoltaic supports and components, several factors doshould be taken into account, including the angle of sunlight, the material and stability of the support, etc. Among them, the most commonly used calculation formula is the formula for calculating the peak power Pmax of the photovoltaic solar panel: Pmax = Isc * (Voc - Vm) / (Voc - Vmref). Among them, Isc is the short circuit current, Voc is the open circuit voltage, Vm is the battery output voltage, and Vmref is the reference value of the battery output voltage.
The calculation results of this formula can be used to evaluate the output power of the photovoltaic module, thereby further determining the design and installation method of the bracket. In addition, when calculating the stability of the photovoltaic support, factors such as the structure and material of the support must be taken into account. Usually, photovoltaic racks are made from weather-resistant steel materials, qThey have good corrosion resistance and strength.
In addition to the calculation formula, you should also pay attention to the installation angle of the photovoltaic modules. The installation angle of photovoltaic modules has a great impact on the angle of incidence of light and the efficiency of energy use. Therefore, when calculating photovoltaic supports, the optimal installation angle of photovoltaic modules should be considered to improve the power generation efficiency of the photovoltaic system.
In summary, the design and calculation of photovoltaic solar energy production systems must take into account the stability and efficiency of photovoltaic supports and components. Using the peak power calculation formula of the photovoltaic module, the output power of the photovoltaic module can be evaluated, and then the design and installation method of the photovoltaic module can be evaluated.support can be determined. In addition, attention should be paid to the optimal installation angle of photovoltaic modules to improve the energy efficiency of the photovoltaic system.
What are the materials of photovoltaic supports?
With the continuous advancement of photovoltaic power plant construction, the installation height of photovoltaic supports has also attracted wide attention. So, what should the minimum mounting height of photovoltaic supports be?
First of all, before answering this question, it must be clear that the minimum mounting height of photovoltaic supports is determined by many factors. These include the terrain environment, climatic conditions, environment, land use and other factors.
According to relevant specifications, standards and recommendations, the minimum mounting height of photovoltaic supports is generally notnot less than 0.8 meters. Specifically, if the photovoltaic racks are installed in different environments such as plains, hills, mountains, etc., the minimum installation height is recommended to be greater than 0.8 meters so that the solar panels have sufficient space for heat dissipation and natural ventilation, and avoid being affected by excessive pollutants, dust and water vapor. If you are in a coastal area, you should consider factors such as wind strength and water level difference, and increase the mounting height accordingly.
So why should the minimum installation height of photovoltaic racks be kept above 0.8 meters? This involves the following reasons:
1. Heat dissipation and ventilation: Solar panels are installed on the ground via photovoltaic supports. If the height ofinstallation is too weak, they may be subjected to a large amount of dust. The influence of pollutants such as rainwater will not only reduce the power generation efficiency of the panel, but also damage its service life. At the same time, too low an installation height can easily prevent solar panels from dissipating heat and providing natural ventilation, thereby affecting the normal operation of the system.
2. Moisture penetration: If the minimum mounting height of the photovoltaic bracket is too low, moisture from the ground will easily penetrate into the bottom of the panel, at the same time increasing the risk of panel defects. , when the wind is strong or there is heavy precipitation. When the water level is large, the rising water level will also cause the panel to submerge. Additionally, low-lying areas are more likely to accumulate water and flooding can damageer solar panels.
3. Safety: Too low installation height can easily cause accidental collision of people or erosion of animals, thereby affecting the normal operation and service life of the system.
In addition to the above factors, other reasons should be considered. For example, there may be various vegetation, stones and other obstacles on the ground, which prevent the installation of the photovoltaic support on the ground. This issue will occur if the mount height is too low, but the minimum mount height is greater than 0.8. Meters can effectively avoid this problem.
In short, photovoltaic power plants are an important means of producing new energy. When installing photovoltaic racks, several factors such as local geographic environment and climatic conditions should be comprehensively considered to select the height ofMinimum appropriate assembly. Based on this, materials are selected and designs are optimized to ensure the normal operation and long-term reliability of the PV plant.
Photovoltaic supports constitute an important part of the photovoltaic module system. Different materials have different characteristics and application ranges. Here are several common photovoltaic support materials:
1. Zinc-aluminum-magnesium photovoltaic bracket
Zinc-aluminum-magnesium photovoltaic bracket is a new type of photovoltaic bracket material with good corrosion resistance and self-healing capabilities. Zinc, aluminum and magnesium materials will form a protective film on the surface in an oxidizing environment, effectively preventing oxidation and corrosion. The corrosion resistance of zinc, aluminum and magnesium can reach 10-20 timess that of ordinary hot-dip galvanized sheets, which significantly increases the lifespan of the material. Generally, the lifespan can reach more than 30 years. It also has good ductility and plasticity, which makes it easier to process. Extending its service life can also reduce the amount of replacement materials and waste, thereby achieving the goal of resource saving and environmental protection. At present, this material is widely used in photovoltaic module installation systems, rooftop and ground-mounted solar power plants and other fields.
Two, Aluminum alloy bracket
Aluminum alloy: Aluminum alloy is another common photovoltaic bracket material. Its low density, light weight and good oxidation resistance make it widely used in various environmental conditions. At the same time, aluminum alloy also has agood processability and easy maintenance.
3. Hot-dip galvanized photovoltaic bracket
Hot-dip galvanized photovoltaic bracket is a common and widely used bracket in the market. It is made of angle steel, square tube, channel steel and other steel materials, and has the advantages of high strength, good stability and easy installation.