Does the photovoltaic power station have radiation?

With the popularity of photovoltaic power plants, concerns and rumors about "radiation from photovoltaic power plants" have gradually increased. Many installed users fear that their rooftop photovoltaic power plants will endanger their health, and those who have not installed them are afraid to install them for fear of radiation intrusion. Does the photovoltaic power plant really have radiation?

Generally speaking, radiation is divided into ionizing radiation and non-ionizing radiation.

Ionizing radiation is a kind of high-energy radiation, which can destroy physiological tissues and cause harm to human body, but this kind of harm generally has a cumulative effect. Nuclear radiation and X-rays are typical ionizing radiation.

Non-ionizing radiation refers to radiation with relatively low energy, which can not ionize atoms or molecules of matter, and is almost harmless to human body. The electromagnetic radiation produced by electronic products and household appliances that we often come into contact with belongs to non-ionizing radiation.

Photovoltaic Q & a

Q: There are so many photovoltaic modules installed on the roof of my house, and the inverter outputs so much current, will it produce a lot of radiation?

Answer: No, the PV modules and DC cables themselves have no radiation. Although the output transformer is alternating current, the frequency is only 50 Hz. The inverter is a device that converts direct current into alternating current. There is power electronic conversion in it. The frequency is generally 5-20 KHz. These two components will produce weak electromagnetic radiation, but because the frequency is very low, the electromagnetic radiation is very small, so don't worry.

Q: Is it true that the radiation generated by the installation of photovoltaic power plants is harmful to human body?

Answer: Regular photovoltaic enterprises use photovoltaic components that meet national standards, and the electromagnetic radiation generated is almost negligible. Compared with household appliances, the electromagnetic radiation of photovoltaic power stations is even lower than that of refrigerators, so they can be installed safely.

The state has strict standards for the electromagnetic compatibility of photovoltaic inverters. Inverters used in domestic or low-voltage power supply network facilities directly connected to residential buildings shall meet the limits of Class B in Group 1 of GB 4824-2004, as shown in the following table. The electromagnetic radiation of

photovoltaic inverters is about the same as that of notebook computers, lower than that of induction cookers, hair dryers and refrigerators , so there is no need to worry too much.

Through the above introduction, I believe that we have some understanding of the safety of photovoltaic power plants. The installation of rooftop photovoltaic power station will not affect our life and health, but also bring many benefits:

supplement the power gap: in the peak period of summer power consumption, it can be self-use;

save land resources: local power generation, local grid-connected use;

Reduce pollution emissions: zero carbon power generation mode, green and environmental protection;

investment income is better: surplus electricity is sold on the grid, the return is fast, and the income is high.