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Bad weather photovoltaic power generation system knowledge science

  • Source:the Internet
  • Release on :2019-01-18

Need to clean the photovoltaic power system after snow? How to deal with it after snow?
A: Because snow covers the components, only a small part of the solar energy passes through the snow to the PV modules, which may affect the amount of photovoltaic power generated. You can use the soft object to push the snow down, taking care not to scratch the glass. The components are load-bearing, but they cannot be stepped on the components, which may cause the components to crack or damage and affect the life of the components. It is generally recommended not to wait for the snow to be too thick and then clean to avoid over-icing.

Do you need to disconnect the photovoltaic system during thunderstorms?
A: DistributedPVThe system is equipped with lightning protection, so there is no need to disconnect. For safety insurance, it is recommended to disconnect the circuit breaker switch of the combiner box, cut off the circuit connection with the PV module, and avoid the hazard 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 harm caused by the failure of the lightning protection module.

Will the photovoltaic system still work if there is continuous rain or fog?
Answer: Photovoltaic cell modules can also generate electricity under certain weak light, but due to continuous rainy or hazy weather, the solar irradiance is low, and if the operating voltage of the photovoltaic system does not reach the starting voltage of the inverter, then the system It won't work.

Will there be insufficient power when the weather is cold in winter?
A: The power generation of photovoltaic systems is indeed affected by temperature. The direct influencing factors are the intensity of radiation and the duration of sunshine and the operating temperature of solar modules. In winter, it is inevitable that the intensity of radiation will be weak, the duration of sunshine will be short, and the amount of electricity generated will be less than that in summer. This is also a normal phenomenon. However, since the distributed photovoltaic system is connected to the power grid, as long as the power grid has electricity, there will be no power shortage and power failure in the household load.

Does the photovoltaic system have electromagnetic radiation and noise hazards to users?
Answer: Photovoltaic power generation system converts solar energy into electric energy according to the principle of photovoltaic effect, without pollution or radiation.InverterElectronic devices such as power distribution cabinets are tested by EMC (electromagnetic compatibility), so there is no harm to the human body. The photovoltaic power generation system converts solar energy into electric energy without causing noise. The noise level of the inverter is not higher than 65 decibels, and there is no noise hazard.


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