effect of tower displacement of two parallel transmission lines on magnetic field
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01-12-2010, 11:52 AM


This article describes the effect of tower displacement of two parallel transmission lines on the magnetic field distribution. Here, two parallel lines with the same working voltage and having the same span and in which the use of artificial tower displacement is made is modeled.Parallel transmission lines with different span lengths and different voltages produce tower displacements naturally and this is also modeled. Additionally, the effects like the spacing between the parallel lines, phase conductors arrangements and the transmission line loading, the effects of one line disconnection etc are also investigated. the magnetic field distribution under and around the parallel lines is modelled in the case of varied operating conditions.
The Exposure to 50-Hz magnetic fields produced by overhead lines has been suspected of increasing the risk of cancer. and the risk to the people and animals under the high voltage transmission lines has been a concern for the scientists. high values of magnetic fields are produced as the value of current is a bit high. The the geometrical parameters of overhead transmission lines (OHTLs) affect the magnetic field values. the magnetic field values near ground surface under and around the HVTLs . The magnetic field distribution at 1-m height above ground surface generated by parallel TLs is studied in this paper. Two cases were considered. First case considered two parallel
TLs having the same working voltage of 275-kV and the same line span of 400 meters. The the magnetic field values are assessed after doing the artificial tower displacement. In the second case, magnetic field distribution under 275- and 132-kV parallel lines is studied.

Get the report pdf here:
mediafire?r0hqm7z58kg9vgr
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