The impact of high voltage can be divided into four aspects: power frequency electric field, power frequency magnetic field, electromagnetic radiation interference, and ground potential. The working voltage of high-voltage electrical equipment in the substation is relatively high, which is easy to cause the air of charged conductors to ionize. When the surrounding surface air undergoes corona ionization, many corona pulses equivalent to small radio emission sources are formed, generating radio interference waves. The high-frequency electromagnetic oscillations generated by these pulses result in frequent electromagnetic radiation on corona wires, becoming a source of interference to radio broadcasting and communication. For high-voltage transmission and transformation projects, the public exposure values of electric field strength and magnetic induction strength should be controlled in accordance with the "Electromagnetic Environment Control Limits" (GB8702-2014)
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