ANALYSIS OF INSULATION STATE ON BODY FEELING UNDER THE AC AND DC TRANSMISSION LINE

The body feeling of different insulation effects under AC and DC transmission line is analyzed in this paper.The results could provide a reference for evaluating the electromagnetic environment of AC and DC transmission lines. Firstly, the different types of the body feeling under AC and DC transmission lines is analyzed. The main body feeling under the AC electric fields is the steady-state feeling of the body in the electric fields. The main body feeling under the DC transmission line is the transient electric shock. Secondly, an three-dimensional finite element model of transmission lines and a simplified human body model is established in COMSOL. This paper calculated the induced potential, induced current density and electric field of the human body under different states of insulation. The result shows that wearing the shoes make the body induced voltage increase significantly. Finally, the transient electric shock of different insulation states under the DC transmission line is analyzed in this paper. The model of DC transmission line and human body is built in the laboratory, and the transient electric shock under different insulation states is simulated. The body's discharging waveform can be used to evaluate the body feeling. The experiment results can provide technical support for the safe operation and maintenance of DC transmission lines.