In the installation of photovoltaic power generation systems, the distributed power generation system on the roof is different from the installation form of the ground power station.
Study on the site selection of the front roof photovoltaic array
1. Roof structure (fixed bracket to ensure waterproof).
2, purlin spacing, direction, size distance.
3. Roof structure and component arrangement.
4. Avoid shadows.
The color steel roof structure
1. The types of color steel roofs are mainly divided into angle-shaped, upright hemlock and ladder-type structures.
2.Color steel roof fixture form
Trapezoidal color steel roof installation form
Angular type color steel roof installation form
Installation type of upright seam-type color steel roof
3. Do a good job of waterproofing
When installing a photovoltaic system, first ensure that it is installed without damaging the roof. The roof with a waterproof layer needs to avoid punching, and the colored steel roof needs to use waterproof glue or rubber pads for punching.
The key points to pay attention to the arrangement of component squares:
1.The direction of the bracket and the ridge and roof panel
The photovoltaic support keel is perpendicular to the roof panel
During installation, the keel of the photovoltaic bracket is perpendicular to the roof slope to reduce the gliding force
Bracket keel along the slope (not recommended)
2, the length and width of the components
During installation, the length and width of the module are determined according to the roof area. When the long side of the module is perpendicular to the keel, the cost of the bracket is saved. Keep the width of the cable trough when installing.
3. Caigang roof load
Under normal circumstances, the photovoltaic power generation equipment installed on the steel structure workshop will increase the weight by 15 kg per square meter. The roofs of large commercial enterprises generally have drawings of the original design institute. If we can obtain drawings before the inspection, we can understand the roof structure and electrical structure in detail distributed. Check whether the roof load meets the installation requirements through the drawings, check the design value of the constant load in the architectural design instructions, and determine whether other loads are added in addition to the roof's own weight, such as pipes, hanging equipment, and roof attachments, and determine the constant load Is there any margin to install photovoltaic power plants.