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2022
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01
Can photovoltaic power plants generate electricity in cloudy and rainy weather?
从11日傍晚开始，全国多地迎来了暴雨。北京、河北、山东等地部分地区，还迎来了大暴雨、特大暴雨。
随着气候的变化，也有不少人咨询小编所谓光伏发电，是不是只有晴天才能发电?那阴雨天岂不是就不发电了?
首先，我们要知道什么是光伏发电?
光伏，就是指太阳能光伏发电系统，是一种利用半导体材料的“光生伏特效应”，当光子照射到金属或半导体表面上时，它的能量可以被金属或半导体中某个电子全部吸收，电子吸收的能量足够大，能克服物体内部引力做功，离开原有物体表面成为光电子，光电子所形成的电流称为光电流。
Can photovoltaic power plants generate electricity on cloudy, rainy, and snowy days?
In most people's understanding, photovoltaic power generation requires sunlight to generate electricity, especially in recent times when it has been cloudy and rainy in various places. Many friends who have installed or want to install photovoltaic power cannot help but worry: will rainy weather affect photovoltaic power generation? If it snows in winter, can it still generate electricity?
It is understood that while photovoltaic power generation obtains energy, it is indeed related to meteorological conditions such as four seasons, day and night, and cloudy and sunny conditions. However, in rainy and snowy weather, although there is no direct sunlight, the power generation of photovoltaic power stations will be relatively low, but it is not that they will not generate electricity. Photovoltaic modules can also generate electricity to a certain extent under low light conditions. In the above video, there is data showing that the 20 kilowatt photovoltaic power plant also generates 20 kilowatt hours of electricity on rainy days.
Although weather factors are beyond our control, we can do a good job in maintaining photovoltaic modules in our daily lives. After the components are installed and start normal power generation, regular patrol inspection and cleaning are very important. Regular patrol inspection can timely understand the operating conditions of the power station. Regular cleaning can remove dirt such as dust on the surface of the components and improve the power generation efficiency of the components.
Cleaning steps for solar panels in rooftop power plants
Before cleaning, check the contamination level of the battery board to be cleaned.
If it is mild pollution - no particulate matter, only dust, we suggest only washing or brushing operations separately.
When deep cleaning is required, if particles are found on the surface or cannot be determined to be present, it is best to rinse first, wait for the particles to be washed away before brushing, and finally rinse again with clean water.
Use a dry small broom or cloth to sweep away any attachments on the surface of the component, such as dry floating ash, leaves, etc. For hard foreign objects such as soil, bird droppings, and viscous objects that are tightly attached to the glass, a slightly hard scraper or gauze can be used for scraping treatment. However, it is important to avoid using hard materials to scrape to prevent damage to the glass surface. Whether to perform flushing and cleaning based on the cleaning effect.
Rinse and clean. For objects that are tightly attached to the glass and have staining substances such as bird droppings, plant juices, or wet soil that cannot be removed, cleaning is necessary to handle them. The cleaning process is generally carried out with clean water and a flexible brush. In case of oily dirt, the contaminated area can be cleaned separately with Dishwashing liquid or soapy water.
