Solar PV array

First, an overview:

Solar photovoltaic power station points below the 6MW distributed photovoltaic power station and 6MW above ground plant two, there is no much difference in the overall design, including equipment selection, power plant siting, building layout, component arranged in array design, cable selection and routing design, inverter chamber and low voltage power distribution room planning and design, electrical a electrical design and second design, lightning protection design. Because of the difference between the size and access, distributed and ground station in the design or some differences.

Distributed photovoltaic power plants generally construction in factories and businesses on the roof. The cable trench, substation, distribution, lightning protection equipment have often do not require additional design. Access to the power of one and secondary design of national grid company are introduced corresponding standards and typical design. Second, solar PV installation:

The main building roof two categories, the first category is the cement concrete roof, second kinds of steel structure steel tile roof.

Cement concrete roof bearing high generally in more than 150kg, usually small in size; color steel tile roof area is large, but the load-bearing low often not more than 100KG/ square meters, and the need to reserve of wind and snow loads.

Three, the installation of cement concrete roof:

Cement roof mounted solar stent system will use cement as a base frame. Based on the production of two ways, on-site pouring cement foundation. Advantages: with the roof combined into one solid foundation of cement dosage less. Disadvantages: the need for a reinforced pre buried in the roof of a building. Or with expansion bolts to connect the cement base and roof as a whole, it is easy to damage the roof waterproof layer, a long time easy leakage.

Another way, need accurate statistics project site perennial average wind speed and different seasons wind direction, calculate the positive and negative wind pressure. By converting the size of wind pressure out base cement weight. Pre processed size consistent with the cement pressing block and transported to the site installation.

Four, the installation of tile roof:

Here refers to the tile surface is concrete inclined roof, installation is generally opened the tiles, in the concrete expansion screws, install hook connector, then go back to tile, the key to control of expansive screw position to distance under the tiles along the way. If you want to look good words, may also need to tile down along the saw out a gap. With particular attention to is the thickness of the concrete, no damage to the roof waterproof structure.

Five, installation of color steel tile structure:

Caigang watt generally used in light steel structure building is more common in standard workshop, warehouse. Light steel structure building used lightweight steel tile for the roof span can do greatly. It is very suitable for large-scale laying of solar battery components. City Industrial Park is the joint construction of standardized plant, large numbers of area, often a can with tens of megawatts of solar power plants.

Color steel tile is composed of a thin metal plate wrapped foam board, using traditional methods can not be fixed battery assembly bracket. Need dedicated fixture and clamp does not destroy the original structure, will not lead to a leaking roof or overall structural damage.

From the point of view of load-bearing considerations: if installed in accordance with the best angle, the inevitable to multi-purpose bracket, increase the weight of the roof. Considering from the safety point of view, according to the best angle installation, the component will not be able to parallel to the roof, wind generated additional pressure, the formation of security risks. To sum up two points, the component can only tile on the roof color steel tile. Component installation quantity only in roof area and bearing on and optimization without meaning.