PENGURANGAN POLLUSI RADIASI MEDAN ELEKTROMAGNETIK DENGAN PENEMPATAN KAWAT GROUNDING ANTARA KONDUKTOR PHASA DAN KONTUR PERMUKAAN TANAH
Abstrak
A simulation method for remodification of the arrangement of the element of the Maxwell Potential Coefficient Matrix (MPCM) which has been adjusted to : a configuration model of phase conductors of the ultra high voltage transmission line on the tower, and their composite model of the ground wires that is separately located under phase
conductors, all of them are presented. The purpose of the MPCM element remodification is an implementation of reduction of electric field intensity (EFI) level. The remodification must be based to forming of the design of the geometric dimension of the air gap between “the ground wires” placed at the bottom of the phase conductors and the surface of the ground. “The ground wires” are additional ground wires aside from the overhead ground wires.
The sample is a ultra high voltage transmission lines (1145 kV), 3 phase, 13.5 meters in phase spacing, phase conductor 16.8 meters in height, and horizontal configuration (flat). The additional ground wires placed off the outer phase (at the bottom of the phase conductor) at the point of maximum gradient and at a height of 7 meters above ground.
The result of computation show that electric field intensity level can be significantly decreased 27.4 % in magnitude. However, the reduction of the electromagnetic field radiation using electrode of the additional ground wires aside from the overhead ground wires will be decrease electric field intensity (EFI) level, specially for ultra high voltage transmission lines, horizontal configuration, a 3 phase, 13.5 meters in phase spacing, and phase conductor 16.8 meters in height.
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