1. Will the shade of houses, leaves or even bird droppings on the photovoltaic modules affect the power generation system?
A: The shaded photovoltaic cells will be consumed as a load, and the energy generated by other unshaded cells will heat up and easily form a hot spot effect. Thereby reducing the power generation of the photovoltaic system, and even burning the photovoltaic modules in severe cases.
2. Will photovoltaic modules still work in rainy or hazy weather? Will there be a lack of power or a power outage?
A: The solar irradiance is low on rainy or hazy days, but photovoltaic modules still generate electricity in low light. As long as the working state of the photovoltaic modules reaches the starting conditions of the inverter, the photovoltaic power generation system will work normally. When the distributed grid-connected photovoltaic system is not working, the load is automatically powered by the grid, and there is no problem of insufficient power and power failure.
3. Will the electricity be insufficient when it is cold in winter?
A: The factors that directly affect the power generation are the radiation intensity, the duration of sunshine and the working temperature of the photovoltaic modules. In winter, the radiation intensity will be weak and the duration of sunshine will be shortened, so the power generation will be reduced compared with summer. However, the distributed photovoltaic power generation system will be connected to the grid. As long as there is electricity in the grid, there will be no shortage of power and power outages for household loads.
4. Is it necessary to disconnect the photovoltaic power generation system in thunderstorm weather?
A: Distributed photovoltaic power generation systems are equipped with lightning protection devices, so there is no need to disconnect them. For safety and insurance, it is recommended to disconnect the circuit breaker switch of the combiner box to cut off the circuit connection with the photovoltaic modules, so as to avoid the damage caused by the lightning protection module unable to remove the direct lightning strike. The operation and maintenance personnel should detect the performance of the lightning protection module in time to avoid the harm caused by the failure of the lightning protection module.
5. Does the lightning protection of the home improvement system only need the component frame to be grounded for lightning protection?
A: The frame of the DC end component is grounded, and a DC surge protector should be added if the installation is high. In addition, the AC side also needs to be equipped with an AC surge protector.
6. How to clean photovoltaic modules?
A: Rainwater can be cleaned without special maintenance. If you encounter adhesive dirt, you can simply wipe it with a soft cloth and clean water. It is recommended to use a soft brush and clean and mild water when cleaning the glass surface of photovoltaic modules. The cleaning force should be small to avoid damage to the glass surface. For modules with coated glass, care should be taken to avoid damage to the coating layer.
7. Is there a danger of electric shock when wiping with water?
A: Wiping with water will not be dangerous. The photovoltaic power generation system and components have insulation and grounding protection. However, in order to avoid electric shock injury and possible damage to the components caused by wiping the components under high temperature and strong light, it is recommended to clean the components in the morning or late afternoon.
8. Do you need to clean up the snow on PV modules after snowing? How to clean up?
A: When heavy snow accumulates on the components after snow, manual cleaning is required. Use soft objects to push the snow down, taking care not to scratch the glass.
9. Can I step on the components for cleaning?
A: The components have a certain load-bearing capacity, but you cannot step on the components for cleaning, which will cause the components to crack and damage, which will affect the power generation and service life of the components.