From the evening of the 11th, many parts of the country received heavy rain. Beijing, Hebei, Shandong and other parts of the country, but also ushered in heavy rainfall, very heavy rainfall.
With the change of climate, there are many people consulting the so-called photovoltaic power generation, is not only sunny days to generate electricity? Then the rainy days will not generate electricity?
First of all, we need to know what is photovoltaic power generation?
Photovoltaic, refers to the solar photovoltaic power generation system, is a use of semiconductor materials "photovoltaic effect", when the photon irradiation to the surface of the metal or semiconductor, its energy can be absorbed by the metal or semiconductor in a certain electron, the electron absorbed energy is large enough to overcome the internal gravitational force of the object to do work, leaving the original object surface to become photoelectric, photoelectric formed by the current called photocurrent.
In most people's perception, photovoltaic power generation needs sunlight to generate electricity, especially recently, around the cloudy and rainy, many installed photovoltaic or want to install photovoltaic friends can not help but worry: cloudy and rainy weather will not affect photovoltaic power generation? If it snows in the winter can still generate electricity?
It is understood that photovoltaic power generation in the acquisition of energy, indeed, with the four seasons, day and night and cloudy and sunny weather conditions. But in the rain and snow, although there is no direct sunlight, photovoltaic power plant power generation will be relatively low, but not no power generation. Photovoltaic modules can also generate electricity to a certain extent under low light conditions. In the video above, there is data showing that a 20 kW PV plant generated 20 degrees of electricity on a rainy day.
Although we have no control over the weather, we can do a good job of maintaining the PV modules in our daily lives. Regular inspection and cleaning are important after the modules are installed and start generating electricity normally. Regular inspection can keep abreast of the operating conditions of the power station, and regular cleaning can remove the dust and other dirt on the surface of the modules to improve their power generation efficiency.
Rooftop power station solar panel cleaning steps
Check the level of contamination of the panel to be cleaned before cleaning.
If the contamination is light - no particles, only dust, we recommend that only a separate rinsing or brushing operation is sufficient.
When deep cleaning is required if particles are found on the surface or you are not sure there are none, then it is best to perform a rinse first, then brush after rinsing off the particles, and finally, it is best to rinse again with clean water.
Use a small dry broom or rag to sweep off the adhering materials such as dry floating dust, leaves, etc. from the surface of the component. For hard foreign matter such as mud, bird droppings and sticky objects that are immediately attached to the glass, a slightly stiffer scraper or gauze can be used to scrape and wipe the surface, but care should be taken not to use hard materials to scrape and wipe to prevent damage to the glass surface. To clean the effect to see whether to rinse cleaning.
For objects that cannot be swept away, such as staining substances such as bird droppings, plant sap, etc. or wet soil, which are closely attached to the glass, cleaning is necessary. The cleaning process generally uses water with flexible brushes to remove. If you encounter oily dirt, etc., you can use detergent or soapy water to clean the contaminated area separately.
