What Issues Need To Be Considered When Installing Grid Connected Power Generation Systems

When installing a grid connected power generation system, it is necessary to ensure that the roof is not damaged during the installation process. Roofs with waterproof layers need to avoid perforation, and colored steel roofs with perforation need to use waterproof glue or rubber pads. During the installation process, the length and width of the components depend on the roof area. When the long side of the components is perpendicular to the keel, it can save the cost of the support and maintain the width of the cable trough during installation.

When installing a grid connected power generation system, blockage issues should be considered. Generally, please choose an unobstructed area between 8am and 4-5pm, with modules placed on the south facing side. Theoretically, 1 kW takes up 10 square meters of roof area. In rural residents, one roof is usually around 50 square meters, which means a 5kW grid connected power generation system can be installed. Based on an average of 4 hours of sunlight per day, it can generate about 20 degrees Celsius per day and 7300 degrees Celsius per year.

Concrete flat roof, commonly known as bungalows in rural areas, has a flat roof. When installing a grid connected power generation system, there are more requirements for the design. Local lighting should be considered to allow the components to receive as much sunlight as possible. Secondly, complex factors such as shading of front and rear components and wall height should be considered.

In general, the tilt angle of a photovoltaic array should be at a 0 degree angle to the local latitude for better illumination. With the tilt angle, the array naturally occupies a larger area, and sufficient spacing between components should be considered to avoid shadows and parapets. Installing a grid connected power generation system on a flat roof will occupy a larger roof area than a tile roof. Typically, a 1 kW system occupies a roof area of 15-20 square meters, taking a 5 kW household installation as an example, It requires an area of 75-100 square meters, and when installing the grid connected power generation system, it also needs to be installed southward. The proportion of component laying is similar to that of a brick roof, with a 1000 watt area of about 10 square meters.

Usually, photovoltaic power generation equipment is installed in steel structure workshops, with a weight increase of 15kg per square meter. The roofs of large commercial enterprises usually have drawings from the original design institute. If the drawings can be obtained before inspection, more understanding of the roof structure and electrical structure can be gained. The dispersed type can be checked through the drawings to see if the roof load meets the installation requirements. The constant load design value in the building design description can be checked to confirm whether there are additional loads, such as pipelines Lifting equipment, roof attachments, etc., and determine whether there is any margin for the constant load of the installed photovoltaic power station.