Photovoltaic modules are the core components of photovoltaic power generation. In order to operate normally in photovoltaic power plants, it is necessary to inspect and maintain the components of photovoltaic power plants. Solar modules: also called solar panels, usually by solar cells, according to a certain power. z profile steel supplier,And size requirements, a set of power generation units consisting of circuit connections and packaged together by a frame. The components are the basic building blocks of a photovoltaic power generation system.
1.Actively check the ash and dirt of the components. If the ash and dirt are serious, it is necessary to arrange cleaning.
2.Fully understand the parameters of PV modules, make detailed operation and maintenance plans for targeted operation and maintenance of PV modules, and make plans according to requirements.
3.The choice of cleaning time
The cleaning of photovoltaic modules of photovoltaic power plants should be carried out in the morning, evening, night or rainy days. It is strictly forbidden to choose cleaning before or after noon or during periods of strong sunlight. Mainly consider the following two reasons: to prevent the loss of photovoltaic array power generation caused by artificial shadows, and even the hot spot effect; the surface temperature of the components is quite high at noon or when the light is good, preventing cold water from causing glass or glass surface Component damage.
At the same time, in the morning and evening cleaning, it is also necessary to select the time period when the sunlight is weak. It is also conceivable to carry out cleaning work in sometimes rainy weather. At this time, the cleaning process is relatively efficient and thorough because of the help of precipitation. The cleaning process should pay attention to personnel safety and wear safety equipment to prevent leakage and bumps. It is strictly forbidden to step on or otherwise borrow the component board and bracket during the cleaning process.
Cleaning cycle and area planning. Since large-scale photovoltaic power plants occupy a large area, the number of components is large, and the time required for cleaning operations is short every day, the cleaning of photovoltaic power plants needs to be planned according to the electrical structure of the power station to reduce the loss of power generation.
Conventional cleaning can be divided into general cleaning and rinsing cleaning.
One.Ordinary cleaning, use a dry small broom or rag to sweep off the surface of the PV module such as dry floating ash, leaves, etc. For hard foreign objects such as dirt, bird droppings, and viscous objects attached to the glass, scraping may be performed with a slightly hard blade or gauze, but care must be taken not to use a hard material to scratch and prevent damage to the glass surface. Whether it is necessary to perform cleaning and cleaning in terms of cleaning effect. omega profile manufacturer
Two.Rinse and clean. For objects that are close to the glass and have stains such as bird droppings, plant juice, or wet soil, which cannot be cleaned, they need to be cleaned. The cleaning process is generally carried out with clean water and with a flexible brush. If oily dirt or the like is encountered, the contaminated area may be separately cleaned with detergent or soapy water.
Note: Wipe the PV module with a dry or damp soft and clean cloth. Do not use corrosive solvents or wipe the PV module with a hard object. The PV module should be cleaned at an irradiance of less than 200W/m2. Liquid cleaning components with large temperature difference of components; it is strictly forbidden to clean PV modules under meteorological conditions with wind force greater than 4, heavy rain or heavy snow; the warning signs on the PV modules must not be lost; check the connection of the junction boxes of the components, whether there is looseness or heat , discoloration phenomenon, and timely processing.