Household solar pv power station for small distributed photovoltaic system, also called household photovoltaic power station. Generally we see are installed on the roof, but not all of the roof is fit for installation. In photovoltaic installation should be fully considered in the design of the actual situation, to
household solar pv power station is a small distributed photovoltaic system, also known as household photovoltaic power station. We usually see are installed on the roof, but not all of the roof is fit for installation. Photovoltaic installation design should give full consideration to the actual situation, follow the principle of economy is applicable. Photovoltaic installation design, high reliability, strong and durable, easy to maintain, and fully consider the influence of geography and climate environment. Choose household photovoltaic installation site location, generally can choose on the roof of a house or an empty ground, considering the conditions available area, building structure and load bearing requirements, basic conditions, meteorological and hydrological conditions of the ground. If you choose to install in his own roof, roof bearing capacity must be greater than 20 kg/square meters. If the beam is the wooden structure houses, the should not be considered. The service life of pv systems can be up to 25 years, wooden house beam perishable. Suggest not to install it. Herringbone housetop if solar photovoltaic power station built on the roof of the herringbone structure, good Angle cannot be like the ground station design, and to consider before and after the block length. For the purpose of pv module and the combination of the roof support usually directly south-facing roof tile. Support and the roof by clamp connection, battery components installed on the bracket. This way not only beautiful, but also can realize the use of roof area. Flat roof structure in order to build on the roof of the flat roof structure of solar photovoltaic power station, need to set up photovoltaic stents and good design components of Angle and distance between before and after. If choose in their own home empty land clearing installation, you can use the anchor pile and concrete strip foundation as a support base. The specific choice need comprehensive consideration from the geological conditions and cost. In addition, the design of the support base strength shall be according to the local weather conditions. It should be noted that considering the thermal expansion and cold contraction effect components, during the installation, up, down, left and right parts between the interval optimization for about 3 cm. The choice of grid inverter grid inverter is mainly divided into three types: high frequency transformer, low frequency transformer and transformer type. According to the design of the system and the specific requirements of the owner, transformer type is mainly considered from two aspects of safety and efficiency. Household distributed photovoltaic (pv) system is a small, do not need high technical index. When the inverter is no isolation transformer, energy conversion efficiency is higher. Combined with factors such as cost, choose no transformer model is more reasonable. Lightning protection design in order to guarantee the safety and reliability of photovoltaic (pv) grid power generation system, to prevent the external factors such as lightning and surge damage to system components, lightning protection grounding device of the system is indispensable. Solar photovoltaic power station is a tertiary lightning protection building. Lightning protection and grounding involves the following two aspects: 1. Try to avoid lightning rod 2 project to photovoltaic modules. Ground wire is the key of the lightning protection. To prevent lightning induction: equipment, frame, metal pipe and cable metal sheath should be reliable grounding. Each metal objects should be connected to the grounding line. Series are not allowed to pick up after grounding line.