Abstract

CASTILLO CASTILLO, Eduardo; ROMO ROMERO, Harold  and  FLOREZ MARULANDA, Juan Fernando. Response of Power Lines as PLC Channels. Rev. Téc. Ing. Univ. Zulia [online]. 2016, vol.39, n.2, pp.080-087. ISSN 0254-0770.

This paper deals with the response of power lines as communication channels. For this purpose, we simulated and analyzed the frequency response of resistance, inductance, capacitance and conductance parameters for three power lines: one solid core and two stranded core. Thereafter, we simulated and analyzed the frequency and length response of the power line as PLC channel for narrowband systems. Beginning with an R ́ , L ́ , C ́ , and G ́ distributed parameter model of a power line as transmission line through two-port network theory; we obtained that expression of the parameters in frequency function and the transfer function of power lines depend on frequency and length. In stranded-core power lines frequency response is observed with less resistance than in solid-core power lines; this is due to geometric characteristics. In the frequency and length response of power lines, higher attenuation was observed in solid-core power lines than in stranded-core power lines. In the frequency and length response of power lines, higher attenuation was observed in solid-core power lines than in stranded-core power lines, being the lines with stranded-core the most suitable for communication among PLC devices without robust modulation and coding schemes.

Keywords : PLC channel; power line; frequency; attenuation; mathematical model.

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