Scientific research shows that not all electromagnetic fields will affect the ecological environment. When it is controlled in a certain order of magnitude, it is harmless to human body, organisms and other organisms, and may even be beneficial. Therefore, we can't understand the electromagnetic field and its influence on human health unilaterally.
2. The World Health Organization (WHO) believes that if it is below the limit of international norms, it will not have harmful effects on health. The public exposure limit standard of power frequency electric field and power frequency magnetic field in China is lower than or equal to the international standard. So there is no health impact on the human body.
Extended data:
1, primary substation. It refers to AC UHV stations, nuclear power, large-scale energy bases (3 million kilowatts and above) and 750/500/330 kV substations networked across large areas (North China, Central China, East China, Northeast China and Northwest China).
2. Secondary substation. Refers to other 750/500/330kV substations except the primary substation.
3. Three types of substations. Refers to the 220kV substation other than the secondary substation.
4. Four types of substations. Refers to the 35kV and above substations except the primary, secondary and tertiary substations.
References:
Baidu encyclopedia-substation