Photovoltaic power generation entraps people? In this era of PV popularization, such doubts may not be without cause. There are many components of the photovoltaic power generation system, and any problem may affect the overall efficiency, leading to lower returns. So in the end PV cable What is a lie? How to avoid? Here are five common "tricks".
PV support
Photovoltaic support is a special support designed for placing, installing and fixing photovoltaic panels in the photovoltaic power station system. When the inadequately designed support encounters strong wind, it is easy to overturn the support, scatter and damage the components. The thickness of good support steel structure meets the standard requirements. Hot dip galvanized materials or high-quality aluminum alloy materials, with a basic thickness equal to or greater than 2.2mm, have strong corrosion resistance and wind resistance, and can also guarantee a service life of 25 years. The cheap support may not even have a thickness of 2mm, and its corrosion resistance and wind resistance are poor. In addition, the PV system is exposed to the wind and sunshine all the year round, and the support corrosion causes the PV module to fall, which will not pay off; Even if the component is not lost, the corroded support will cause the inclination of the component to change, reduce the power generation of the system, and thus lead to loss of revenue.
PV cable
Photovoltaic cables must be weather resistant, high temperature resistant, friction resistant and have an ultra long service life. Because of its special performance, the cost of photovoltaic cable is very high. If ordinary cable is selected to replace it, the protective layer of the cable used in the photovoltaic system will corrode after two or three years, resulting in the exposure of copper wires inside the cable, which is easy to cause leakage and even fire.
PV module
Photovoltaic module is the core part of photovoltaic power generation system. The quality of photovoltaic module directly affects the length of service life and income. Poor weather resistance of backplane materials directly affects the service life of components. If the strength of the frame material is not enough, it may directly cause the frame of the photovoltaic panel array to fall off or tear in strong wind.
How to identify good or bad power plant components
First of all, it depends on whether the component supplier is a mainstream brand in the industry. Generally, the quality assurance and after-sales service of major brands are guaranteed.
Secondly, check whether there is missing weld when the battery chips are welded in series, as well as the quality of the back pressure bearing, whether the pressure bearing is uneven, or whether there are bubbles, wrinkles, etc. As well as the quality of the border, whether it is strictly rectangular, and the error should not be too large.
PV inverter
Inverter is the medium that converts DC electric energy into AC electric energy. The quality of inverter determines the power conversion efficiency.
The inverter is one of the equipment prone to problems in the photovoltaic system. You must buy high-quality products from regular manufacturers to ensure stable long-term power generation. Daily maintenance should also pay attention to ventilation and heat dissipation to avoid humid and too closed environment.
The inverter with good quality and high efficiency can make the photovoltaic system generate more power. The conversion efficiency of such first-line inverter brands is more than 98%; However, inverters with poor quality and low efficiency will reduce the power generation of the system. Most of these inverters have conversion efficiency of 95% or less.
