1. Will the shadows of houses, leaves or even bird droppings on the photovoltaic modules affect the power generation system?
Answer: The shaded photovoltaic cell will be consumed as a load, and the energy generated by other unshaded cells will generate heat at this time, which will 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 smoggy weather? Will there be a power shortage or a power outage?
Answer: The solar irradiance is low in rainy or hazy days, but photovoltaic modules still generate electricity under weak light. As long as the working state of the photovoltaic module meets 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 power shortage and power failure.
3. Will there be insufficient power when it is cold in winter?
Answer: The factors that directly affect the power generation are the radiation intensity, the duration of sunshine and the operating temperature of photovoltaic modules. In winter, the radiation intensity will be weak and the duration of sunshine will be shortened, so the power generation will decrease compared with summer. However, the distributed photovoltaic power generation system will be connected to the grid. As long as the grid has electricity, there will be no power shortage or power outage for household loads.
4. Is it necessary to disconnect the photovoltaic power generation system in thunderstorm weather?
Answer: Distributed photovoltaic power generation systems are equipped with lightning protection devices, so there is no need to disconnect them. For safety and security, it is recommended to disconnect the circuit breaker switch of the combiner box to cut off the circuit connection with the photovoltaic module, so as to avoid the damage caused by the direct lightning strike that cannot be removed by the lightning protection module. The operation and maintenance personnel should detect the performance of the lightning protection module in time to avoid the damage caused by the failure of the lightning protection module.
5. Does the lightning protection of the home improvement system only require the component frame to be grounded for lightning protection?
Answer: The frame of the components on the DC side is grounded, and a DC surge protector is added if the installation is high. In addition, an AC surge protector also needs to be installed on the AC side.
6. How to clean photovoltaic modules?
Answer: Rainwater can be cleaned without special maintenance. If you encounter adhesive dirt, you can simply wipe it with a soft cloth and water. It is recommended to use a soft brush and clean and mild water when cleaning the glass surface of photovoltaic modules. The force used when cleaning should be small to avoid damage to the glass surface. For components with coated glass, care should be taken to avoid damage to the coating layer.
7. Is there any danger of electric shock when wiping with water?
Answer: Wiping with water will not be dangerous. The photovoltaic power generation system and components have insulation and grounding protection. However, in order to avoid personal electric shock injury and possible damage to the components when wiping the components under high temperature and strong light, it is recommended to clean the components in the morning or late in the afternoon.
8. Do I need to clean up the snow on photovoltaic modules after snow? How to clean up?
Answer: When heavy snow accumulates on the components after snow, manual cleaning is required. The snow can be pushed off with a soft object, being careful not to scratch the glass.
9. Can I step on the components for cleaning?
Answer: The components have a certain load-bearing capacity, but they cannot be cleaned by stepping on the components, which will cause cracks and damage to the components, which will affect the power generation and service life of the components.