Title :
Power line tower models above 1000 kHz in the standard broadcast band
Author :
Trueman, C.W. ; Kubina, S.J.
Author_Institution :
Electromagn. Compatibility Lab., Concordia Univ., Montreal, Que., Canada
Abstract :
It is shown that the resonant behavior of power lines at higher frequencies is quite dependent on the geometry of the crossarms that the tower uses to carry the phase wires. Tower models (including crossarm detail) which can reproduce the Thornhill measurements at 1605 kHz and the scale-model measurements from 1000 to 1900 kHz are developed. One such tower model is simple enough to allow the analysis of long runs of power line. Such models are useful in estimating scattering from power lines across the entire AM broadcast band.<>
Keywords :
amplitude modulation; electric variables measurement; electromagnetic wave scattering; poles and towers; power overhead lines; radio broadcasting; radio stations; radiofrequency interference; resonance; 1000 to 1900 kHz; 1605 kHz; AM broadcast band; EM wave scattering; MF; Thornhill measurements; crossarm geometry; power line resonant behavior; power line tower models; scale-model measurements; Electromagnetic compatibility; Electromagnetic measurements; Electromagnetic scattering; Frequency measurement; Laboratories; Poles and towers; Power measurement; Predictive models; Radio broadcasting; Resonance light scattering;
Journal_Title :
Broadcasting, IEEE Transactions on
