As solar power generation systems become more and more popular, customers also need to supplement their knowledge on photovoltaic power station maintenance.
For equipment performance, radiation intensity and temperature are significant factors that affect component efficiency, and load rate and operating voltage are significant factors that affect inverter efficiency. As for system efficiency, due to its seasonal nature, the environment Temperature and dust shielding are significant factors affecting efficiency.
If you do not pay attention to cleaning the photovoltaic panel components and there are mud spots and stains, it is easy to produce hot spot effect. (The so-called hot spot effect means that part of the series circuit of the photovoltaic panel module is shaded, and its power generation decreases, which consumes the power generated by other parts and becomes a load. The hot spot effect can cause the photovoltaic panel module to be damaged or even burned.)
Regular cleaning and inspection of photovoltaic power station components can significantly improve the efficiency of the photovoltaic power generation system (considering the environment, sand and dust, cleaning, snow removal, etc.).
The design life of the photovoltaic array can reach more than 25 years, and its failure rate is low. Of course, components may be damaged due to environmental factors or lightning strikes. The maintenance work mainly includes: ensuring the cleanliness of the lighting surface of the photovoltaic array. In areas with little rain and heavy sandstorms, cleaning should be done once a month. When cleaning, you should first rinse with water that is not easy to scale, and then wipe dry the water stains with a clean soft cloth. Do not rinse with corrosive solvents or use Wipe with hard objects; (if there are oil stains and other difficult-to-clean areas on the surface, use the above method to clean, and then wipe the area with industrial alcohol to achieve the cleaning effect) Cleaning should be done in the morning or evening when there is no sunlight. Avoid using cold water to clean the photovoltaic modules during the day when they are heated by the sun. Very cold water will crack the glass cover of the photovoltaic module.
Regularly check whether the connections between photovoltaic module boards are firm and whether the connections in the square array junction box are firm and tighten as necessary; check whether the photovoltaic modules are damaged or abnormal. When there is a problem with a photovoltaic module, replace it promptly and record in detail the specific installation location of the module in the photovoltaic array.
Check whether the connection between the square array brackets is firm, whether the connection between the brackets and the grounding system is reliable, and whether the brackets are rust-proofed. Check whether the connection between the metal sheath of the cable and the grounding system is reliable, and make a reliable connection as needed; check whether the lightning protection in the square array combiner box is intact, and replace it as needed.
Cables, wiring, joints, etc. of electrical equipment on site should be paid special attention to to prevent damage, aging, short circuit, discharge and other phenomena in bad weather.
In the after-sales service of photovoltaic power plants of Longju Energy Saving, the company focuses on standardized operation and maintenance management. By establishing a scientific operation and maintenance management system, a rapid fault response mechanism and standardized operation and maintenance operation instructions, everyone has responsibilities, everything has procedures, operations have standards, and defects are corrected, forming a virtuous cycle to This ensures the long-term safe, stable and efficient operation of each distributed power station, thereby ensuring that each customer's household power station power generation revenue is maximized.