Photovoltaic racking is a special bracket designed for placing, installing and fixing solar panels in the solar photovoltaic power generation system, which is usually manufactured by Unistrut C Channel Roll Forming Machine through punching and cold bending molding and other processing techniques. According to the different materials used in the main force-carrying rods of the photovoltaic bracket, it can be divided into aluminum alloy bracket, steel bracket and non-metallic bracket. Among them, the low-cost, high-strength steel bracket is generally galvanized or galvanized aluminum-magnesium steel, accounting for more than 90% of the photovoltaic bracket materials.
The form of composition of PV mounts is greatly influenced by the topography of the location of the PV plant and so on. According to the construction location, the PV bracket is mainly divided into land-based PV bracket and water-based PV bracket.
In terrestrial photovoltaic, the ground centralized photovoltaic bracket consists of columns, purlins, diagonal braces, diagonal beams, etc., and is mainly made of galvanized sheet, zinc-aluminum-magnesium sheet, etc. The foundation of the pile columns is mainly made of galvanized helical ground piles, reinforced concrete piers and other structures. In flat roof photovoltaic, the applied materials are mainly galvanized sheet, zinc-aluminum-magnesium sheet. And the sloping roof bracket mainly uses aluminum alloy, stainless steel, zinc aluminum magnesium plate and other materials.
In water surface photovoltaic, it is categorized into column type photovoltaic and floating type photovoltaic according to the different use scenarios and installation methods. The main components of the former are basically the same as those of the ground-based centralized PV, and the columns and purlins are made of galvanized sheet and zinc-aluminum-magnesium plate, etc., but the pile foundation is mainly cement pipe piles. The latter components are mainly made of stainless steel, aluminum profiles, zinc-aluminum-magnesium plates, etc., and the floats are high-density polyethylene (HDPE).
In addition to photovoltaic mounts, inverters, storage cabinets, transformers and photovoltaic substations, as the supporting facilities of photovoltaic power stations, also use steel in the construction materials.
The shell of the inverter is mainly made of galvanized sheet, zinc-aluminum-magnesium sheet, color coated sheet and other materials. China's photovoltaic power generation system is mainly a DC system, such systems are simple in structure and low cost, but due to the different DC voltages of the loads (e.g., 12 volts, 14 volts, 24 volts, 48 volts, etc.), it is difficult to standardize and make the system compatible. Civilian power is mostly AC loads, so the use of photovoltaic power generation systems requires the use of inverters to convert DC power supply to AC.
The energy storage cabinet enclosure is mainly made of galvanized sheet material. In the photovoltaic power plant system, photovoltaic output power curve and load curve there are large differences, and are unpredictable fluctuation characteristics, energy storage system energy storage and buffer makes the photovoltaic power plant system even in the rapid fluctuations in the load is still able to stabilize the operation of the system, to ensure that the quality of the output power and reliable.
Transformers are mostly made of silicon steel, and the shells are made of galvanized sheet metal. Transformers can raise or lower the supply voltage, and play a role in the transmission of electricity. Photovoltaic substations are made of reinforced steel and concrete, which cures the ground.