Vol. 19

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External and Internal Electromagnetic Exposures of Workers Near High Voltage Power Lines

By Nabil M. Maalej and C. Belhadj
Progress In Electromagnetics Research C, Vol. 19, 191-205, 2011


The major objective of the study was to assess the safety of electric line workers exposed to of a double circuit 132 kV transmission line for different scenarios. The double circuit 132-kV, 60 Hz transmission line has a power rating of 293 MVA and a maximum recorded peak load current of 603 A. The charge simulation and the Biot Savart methods were used by EPRI workstation software to compute the external electric and magnetic fields around a 132 KV transmission line. We used the calculated external electric and magnetic field exposures to determine the induced electric field and induced current densities inside the human body. This was performed using the Finite Difference Time Difference computational algorithm in EMPIRE commercial software, with a 6 mm voxel resolution. We used the Visible Human (VH) to investigate the internal induced electric field and circulating current densities in more than 40 different tissues and organs of the VH. We found that the worker exposure levels to extremely low frequency electromagnetic fields are below the recommended IEEE international standards limits for the studied scenarios. In all scenarios the maximum induced current densities and electric fields were in the bone marrow of the feet.


Nabil M. Maalej and C. Belhadj, "External and Internal Electromagnetic Exposures of Workers Near High Voltage Power Lines," Progress In Electromagnetics Research C, Vol. 19, 191-205, 2011.


    1. IEEE Standard for Safety Levels with Respect to Human Exposure to Electromagnetic Fields, 0-3 kHz, , IEEE Std C95.6, 2002.

    2. ICNIRP, Guidelines for limiting exposure to time-varying electric and magnetic fields (1 Hz to 100 kHz), Vol. 99, No. 6, 818-836 Health Physics, 2010.

    3. National Radiological Protection Board (NRPB), Advice on limiting exposure to electromagnetic fields (0-300 GHz), Vol. 15, No. 2 2004, http://www.hpa.org.uk/Publications/Radiation/NPRBArchive/DocumentsOfTheNRPB/Absd1502/.

    4. Gandhi, O. P. and J. Y. Chen, "Numerical dosimetry at power line frequencies using anatomically based models," Bioelectromagn. J. Supp., Vol. 1, 43-60, 1992.

    5. Dawson, T. W., J. DeMoerloose, and M. A. Stuchly, "Comparison of magnetically induced ELF fields in humans computed by FDTD and scalar potential FD codes," Appl. Comput. Electromag. Soc. (ACES), Vol. 11, 63-71, 1996.

    6. Zubal, I. G., C. R. Harrell, E. O. Smith, Z. Rattner, G. R. Gindi, and P. H. Hoffer, "Computerized three-dimensional segmented human anatomy," Med. Phys. Biol., Vol. 21, 299-302, 1994.

    7. Dimbylow, P. J., "FDTD calculations of the whole-body averaged SAR in an anatomically realistic voxel model of the human body from 1MHz to 1 GHz ," Phys. Med. Biol., Vol. 42, 479-490, 1997.

    8. Dimbylow, P. J., "Fine resolution calculations of SAR in the human body for frequencies up to 3 GHz," Phys. Med. Biol., Vol. 47, 2835-46, 2002.

    9. Gandhi, O. P., Y. G. Gu, J. Y. Chen, and H. I. Bassen, "Specific absorption rates and induced current distributions in an anatomically based human model for plane-wave exposures," Health Phys., Vol. 63, 281-290, 1992.

    10. Kuhn, S., W. Jennings, A. Christ, and N. Kuster, "Assessment of induced radio-frequency electromagnetic fields in various anatomical human body models," Phys. Med. Biol., Vol. 54, 875-89, 2009.

    11. Hand, J. W., "Modeling the interaction of electromagnetic fields (10 MHz{10 GHz) with the human body: Methods and applications ," Phys. Med. Biol., Vol. 53, R243-R286, 2008.

    12. Dawson, T. W. and M. A. Stuchly, "High-resolution organ dosimetry for human exposure to low-frequency magnetic fields," IEEE Trans. Mag., Vol. 34, No. 3, 708-718, 1998.

    13. Furse, C. M. and 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, 293-299, 1998.

    14. Gandhi, O. P., "Some numerical methods for dosimetry: Extremely low frequencies to microwave frequencies," Radio Science, Vol. 30, 161-177, 1995.

    15. Gandhi, O. P., G. Kang, D. Wu, and G. Lazzi, "Currents induced in anatomic models of the human for uniform and nonuniform power frequency magnetic fields," Bioelectromagnetics, Vol. 22, 112-121, 2001.

    16. Dimblylow, P. J., "Induced current densities from low-frequency magnetic fields in a 2mm resolution, anatomically realistic model of the body ," Phys. Med. Biol., Vol. 43, 221-230, 1998.

    17. Shen, L. and J. Kong, Applied Electromagnetics, Brooks/Cole Engineering Division, 1983.

    18. Zahn, M., Electromagnetic Field Theory: A Problem Solving Approach, J. Wiley, 1979.

    19. Rims, K. J. and P. L. Lawrenson, Analysis and Computation of Electric and Magnetic Field Problems, Pergamon Press, 1973.

    20. Silvaster, P. and P. Ferrari, Finite Element for Electrical Engineers, Cambridge University Press, 1983.

    21. Foe, P. Y. and S. Y. King, Proc. IEE Bundle Conductors Electric Field by Integral Equations Method, Vol. 123, No. 7, 702-706, 1976.

    22. Maruvade, P. S. and W. Janischweskyj, "IEEE Trans. PAS Electrostatic Field of System of Parallel Cylindrical Conductors,", Vol. 88, No. 7, 1069-1078, 1969.

    23. Singer, H., H. Steinbigler, and P. Weiss, "A charge simulation method for the calculation of high voltage fields," EEE Trans. PAS, Vol. 93, 1660-1668, 1974.

    24. El-Arabaty, A., M. Abdel-Salam, and E. Mansour, "Electric field and corona threshold levels on HV biopolar transmission lines-calculations vs. experiment ," IEEE Trans. PAS, Vol. 77, 236-3, 1977.

    25. Sendaula, H. M., "Electric field induced by EHV transmission over irregular terrain," IEEE Trans. PAS, Vol. 102, No. 5, 1452-1458, 1983.

    26. ERRI, Transmission Line Reference Book 345 kV and Above, Fred Weidner and Sons, New York, NY, 1975.

    27. Electric Power Research Institute (EPRI), Electric and Magnetic Fields Workstation (EMF WORKSTATION), Users Manual Version 2.5, 2007.

    28. Deno, D. W. and L. E. Zaffanella, "Electrostatic effects of overhead transmission lines and stations," Transmission Line Reference Book: 345 kV and Above, 248-280, EPRI Report RP-68, Electric Power Research Institute, Palo Alto, Calif, 1975.

    29. Yee, K. S., "Numerical solution of initial boundary value problems involving Maxwell's equations in isotropic media ," IEEE Tran. Antennas Propagation, Vol. 14, 302-307, 1966.

    30. Gandhi, O. P. and J. Y. Chen, "Numerical dosimetry at power-line frequencies using anatomically based models," Bielectromagnetics J. Supplement, Vol. 1, 43-60, 1992.

    31. The U.S. National Library of Medicine, The Visible Human Project, http://www.nlm.nih.gov/research/visible/visible human.html.

    32. Maalej, N. M., T. K. Abdel-Galil, M. A. Abdul-Majeed, and I. O. Habiballah, Organ Dosimetry for a Worker Standing Under 132 kV Power Line, World Congress on Medical Physics and Biomedical Engineering, Vol. 14, 2660-2663, 2007.

    33. Maalej, N. M., C. A. Belhadj, T. K. Abdel-Galil, and I. O. Habiballah, "Visible human utilization to render induced electric field and current density images inside the human," IEEE Proceedings, Vol. 97, No. 12, 2053-2059, 2009.

    34. Dawson, T. W., K. Caputa, and M. A. Stuchly, "Influence of human model resolution of computed currents induced in organs by 60 Hz magnetic fields," Bioelectromagnetics, Vol. 18, 478-490, 1997.

    35. Gabriel, S. R., W. Lau, and C. Gabriel, "The dielectric properties of biological tissues: Measurements in the frequency range 10 Hz-20 GHz ," Phys. Med. Biol., Vol. 41, 2251-2269, 1996.