Abstract
This paper presents a computational model for the analysis of broadband PLC radiation by a practical power line with sag. The numerical results show that the sag may have a signiflcant in∞uence on the magnetic vector potential generated by the power line. DOI: 10.2529/PIERS060830095053 Power line carrier (PLC) is a communication technique that uses existing power lines to carry information, traditionally using frequencies in the KHz range. Lately, there has been an interest in high-speed broadband communication on power lines. The broadband power line carrier commu- nication uses frequencies in the MHz range, which is a challenge, concerning the signal attenuation and its electromagnetic compatibility with other communication systems. Wave propagation in a straight transmission line above ground has been studied in the past. But an overhead power line is actually of catenary shape due to its sag. The goal of this paper is to investigate the difierence between the electromagnetic (EM) fleld radiated by a broadband PLC line of catenary shape and that radiated by a straight line. z
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