1. The inclination of the installation of solar modules
The direction angle of solar modules is usually chosen in the south direction to maximize the power generation per unit capacity of the solar power generation system. As long as it is within ± 20 ° due south, there will be no significant harm to the power generation. If the environment allows, it should be as far southwest as possible by 20 °.
2. Efficiency and quality of solar modules
Calculation method: Theoretical power generation=Annual solar radiation × Installed capacity × system efficiency
There are two factors here, namely battery area and photoelectric conversion efficiency. The conversion efficiency here directly harms the power generation of the power station.
Component matching loss
Because the current difference between components causes current loss, any parallel connection will cause voltage loss due to the voltage difference between components. The loss will reach over 8%.
Ensure good ventilation environment for components
According to the data, when the temperature rises by 1 ℃, the power of crystalline silicon solar modules decreases by about 0.3%. So it is necessary to prevent the impact of temperature on power generation and maintain a well ventilated environment.
The loss of dust cannot be underestimated
The panel of the crystalline silicon module is made of tempered glass, and during prolonged exposure, organic matter and a large amount of dust may accumulate. Falling ash on the surface blocks light, which can reduce the output efficiency of the component and directly harm the power generation.
3. Reduce line losses
In solar systems, cables account for a small portion, but the harm of cables to power generation cannot be underestimated. It is recommended to control the line loss of DC and AC circuits within 5%.
The cables in the system should be well prepared, including their insulation performance, high temperature resistance and flame retardancy, moisture and light resistance characteristics, types of cable cores, and size specifications.