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Electric Field Distribution Characteristics of Human Head Under UHV DC Transmission Line

In this paper, COMSOL Multiphysics software was used to simulate the electric field distribution of human body 3D model under typical ± 800kV DC transmission line. Firstly, the 3D model of human body is established, and then the electric field distribution around the whole human body and the electric field distribution inside the human body are calculated and analyzed. Secondly, the electric field distribution inside and outside the most important part of the human body (the head) closest to the transmission line is studied in more detail, and two cases of grounding and insulation from the ground are considered in the study. Finally, the correlation between transmission line height changes and electric field distribution in human head under grounding and insulation conditions is quantitatively studied. It is found that the increase of transmission lines can significantly reduce the corresponding field strength. The results show that under the current safety standards and specifications, the internal electric field of the human body under a typical ± 800kV UHV DC(Ultra-high Voltage DC Transmission) transmission line does not exceed the safety limit, and the human body is safe under the line.