Title :
Analysis of Protective Hoods Near High-Voltage Power Lines With Installed Communication Antennas
Author :
Zunoubi, Mohammad R. ; Kalhor, Hassan A.
Author_Institution :
Electr. & Comput. Eng. Dept., State Univ. of New York, New Paltz, NY
Abstract :
This paper studies the effect of the conducting hoods used to protect workers from the exposure to high-voltage power frequency and high-frequency communication electromagnetic fields. The finite-difference time-domain technique is employed to solve for the electric-field strength inside a human head model filled with biological material representing the human brain. By evaluating the field at several points and comparing the results with and without the hood, it is shown that at some spots in the head, the field is higher by a significant factor when the hood is present. It is also shown that with the presence of a see-through screen, the field intensity inside the head can be drastically reduced by eliminating the resonance effects. Following our analysis, a general safety guideline can be prescribed and used by the workers when exposed to a broad frequency range spanning from extremely low frequencies to the radio frequencies. The method also enables investigations on how to design a hood that is most suitable for a given frequency spectrum.
Keywords :
biological effects of fields; electromagnetic fields; finite difference methods; power cables; protective clothing; broad frequency range spanning; communication antennas; electric-field strength; finite-difference time-domain technique; high-frequency communication electromagnetic field; high-voltage power frequency; high-voltage power line; human brain; human head model; protective hood; radio frequencies; Finite-difference time domain (FDTD); human brain; power lines; protective hood;
Journal_Title :
Power Delivery, IEEE Transactions on
Conference_Location :
12/12/2008 12:00:00 AM
DOI :
10.1109/TPWRD.2008.2005678