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Fluctuations of electromagnetic field components under high voltage lines

Paś Jacek

Modern Engineering

2021

13--20

High voltage (HV) Lines are part of the national electricity system. They are used for electrical power distribution between the power plant and the recipient. In addition to fulfilling this function, they generate unintentional electromagnetic field (EMF). In order to reduce the field impact on animate and inanimate objects it used to be determined under HV lines protection zones and technological. During electricity transmission occur PEM interferers, which process is dependent on changes e.g., voltage dips, short interruptions or in system. Voltage and current in changes the line superimpose on the alternating electromagnetic field produced by the HV lines and form a modulated waveform signals of different frequencies (50 Hz fundamental frequency, interharmonics and harmonics systems).