A probabilistic approach to exposure assessment of power lines electric field

Existing occupational guidelines for exposure to power frequency fields are designed to prevent short-term effects of induced electric fields and currents on excitable tissues. A novel probabilistic approach to the assessment of human exposure to power lines electric fields is introduced. The method offers clear advantages over existing methods that are based on deterministic assumptions. A model is constructed to predict power lines electric fields taking into consideration the random nature of the various parameters involved. Another model is constructed to predict a level of whole-body exposure field, below which no body stimulation is expected, termed here "safe field." Probability distributions of exposure field near transmission lines and for safe electric field are produced. Both models are integrated into a general model, which characterizes the risk exposure to power lines electric fields. The method is applied for exposure assessment near two typical Egyptian power lines with different probabilities of human presence in the line neighborhood and different human age brackets.

[1]  Akimasa Hirata,et al.  Dosimetry in models of child and adult for low-frequency electric field , 2001, IEEE Transactions on Biomedical Engineering.

[2]  Maria A. Stuchly,et al.  Comparison of electric fields induced in humans and rodents by 60-Hz contact currents , 2003, IEEE Transactions on Biomedical Engineering.

[3]  W H Bailey,et al.  Probabilistic approach to ranking sources of uncertainty in ELF magnetic field exposure limits. , 1999, Health physics.

[4]  Ronold W. P. King,et al.  The complete electromagnetic field of a three‐phase transmission line over the earth and its interaction with the human body , 1995 .

[5]  Ronold W. P. King Currents and electric fields induced in the human body when the arms are raised , 1997 .

[6]  Roberto Turri,et al.  Probabilistic Approaches for Evaluating the Environmental Magnetic Field Generated by Power Lines , 2002 .

[7]  R Kavet,et al.  Summary and evaluation of guidelines for occupational exposure to power frequency electric and magnetic fields. , 1997, Health physics.

[8]  R.W.P. King A review of analytically determined electric fields and currents induced in the human body when exposed to 50-60-Hz electromagnetic fields , 2004, IEEE Transactions on Antennas and Propagation.

[9]  A. Polevoy Calculation of sag changes caused by conductor beating with consideration of insulator string deviation in a transmission line section , 1998 .

[10]  Hussein Anis,et al.  Statistical modeling of exposure to power line electric fields , 1991 .

[11]  S.A. Mahmoud,et al.  Probabilistic modeling of power lines magnetic fields , 2000, 2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134).

[12]  K. Caputa,et al.  High-resolution organ dosimetry for human exposure to low-frequency electric fields , 1998 .