Magnetic Field Reduction Characteristics of Hot-Line Worker's Shielding Wear for 765kV Double Circuit Transmission Line

765kV 2회선 송전선 활선 작업자의 차폐복 자계저감 특성검토

  • 민석원 (순천향대 전기통신시스템공학과) ;
  • 박준형 (순천향대 전기통신시스템공학과)
  • Published : 2007.09.01


This paper analyses current densities induced inside human body of lineman for 765kV transmission line when he wears a protective cloth or not. Applying the boundary element method, we calculate current densities induced in organs inside a worker in case he was located at 15[cm], 30[cm], 50[cm], and 100[cm] far from a prefabricated jumper. As results of study, we find a maximum current density induced in all organs may be higher than $10[mA/m^2]$ if he does not wear protective clothes. We also know high permeability materials can lower current density more than high conductivity materials.


  1. G. Theriault, M. Goldberg, A. B. Miller, B. Armstrong, P. Guenel, J. Deadman, E. Imbernon, T. To, A. Chevalier, D. Cyr, C. Wall, 'Cancer risks associated with occupational exposure to magnetic fields among electric utility workers in Ontario and Quebec, Canada, and France-1970-1989,' Am. J. Epidemiol., vol. 139, pp. 550-572, 1994
  2. International Commission on Non-Ionizing Radiation Protection, 'Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields (up to 300GHz),' Health Phys., vol. 74, pp. 494-522, April 1998
  3. K. Yamazaki, T. Kawamoto, H. Fujinami, T. Shigemitsu, 'Investigation of ELF magnetically induced current inside human body development of estimation tools and effect of organ conductivity,' Trans. IEE Japan, vol. 120-A, pp. 81-87, Jan. 2000
  4. P. Baraton, J. Cahouet, B. Hutzler, 'Three dimensional computation of the electric fields induced in a human body by magnetic fields,' in Proc. of 8th Intern. Symposium on High Voltage Engineering 1993, pp. 517-520
  5. P. A. Demers, D. B. Thomas, A. Sternhagen, W. D. Thompson, M. G. Curnen, W. Satariano, D. F. Austine, P. Issacson, R. S. Greenberg, C. Key, L. K. Kolonel, D. W. West, 'Occupational exposure to electromagnetic fields and breast cancer in men,' Am. J. Epidemiol., vol. 132, pp. 775-776, 1991
  6. C. M. Furse, O. P. Gandhi, 'Calculation of electric fields and currents induced in a millimeter resolution human model at 60 Hz using the FDTD method,' Bioelectromagnetics, vol. 19, pp. 293-299, 1998<293::AID-BEM3>3.0.CO;2-X
  7. P. J. Dimbylow, 'Induced current densities from low-frequency magnetic fields in a 2 mm resolution, anatomically realistic model of body,' Phys. Med. BioI., vol. 43, pp. 221-230, 1998
  8. D. A. Savitz, D. P. Loomis, 'Magnetic field exposure in relation to leukaemia and brain cancer mortality among electric utility workers,' Am. J. Epidemiol., vol. 141, pp. 123-134, 1995
  9. O. Bottauscio, R. Conti, 'Magnetically and electrically induced currents in human body models by ELF electromagnetic fields,' in Proc. of 10th Intern. Symposium on High Voltage Engineering 1997, 5-8