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Precautions for household photovoltaic system dust removal
- Aug 13, 2018 -

The household photovoltaic power station is soiled by dust, affecting not only the amount of electricity generated, but also the life of the photovoltaic power station. Pay attention to the following matters during the dust removal process.

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1. Pay attention to the dust removal time of photovoltaic power station

The photovoltaic power station works under the condition of light. Under the strong light, the photovoltaic power station has high voltage and large current. A slight accident will bring safety hazards to the cleaning personnel. Therefore, when choosing dust removal, try to avoid the working time of PV power station. Generally, choose morning and evening, because the photovoltaic power station has low working efficiency and small loss of power generation during this time. In addition, dust removal during this time can avoid the cleaning personnel. Component shadow occlusion.

2. Clean up should have periodicity

In some places, the weather is humid, and in some places, the fog is so serious that the dust on the household PV power station is basically all the time, but if the dust is cleaned every day, it will waste a lot of time and cannot be cleaned once a month, which seriously affects The amount of electricity generated by the power station. So what kind of cycle is most suitable? Usually it is 2-3 times a month. If you encounter a wide range of blizzard weather or dusty weather, you should change it and increase the cleaning frequency.

3. Pay attention to the safety of cleaning personnel

Photovoltaic power plants are made up of numerous components and brackets. Be careful not to be injured by these sharp corners when cleaning components. The DC cable placed outside is connected to the components and the inverter. As time goes by, the cable may be exposed. Therefore, when cleaning, check the cable condition first, and then eliminate the hidden danger of leakage. Carry out cleaning activities. In addition, since most of the household photovoltaics are installed on the inclined roof, it is necessary to pay attention to the risk of people stepping on or down when cleaning.

4. Avoid direct water flushing

Cleaning the PV modules in winter should avoid direct cleaning with water, because the temperature is too low, and the water will freeze on the surface of the components after rinsing, which may cause cracks in the components. In addition, in the process of water cleaning, water should be prevented from directly wetting to the junction box, posing a risk of electric leakage.