ON THE CHARACTERIZATION OF OUTDOOR CABLES AS DATA COMMUNICATION CHANNELS

Sobhy S. Al-dosouki, Abdul-Fattah I. Abdul-Fattah, Ahmed A.S. Dosouki, Samah H. Gomaa

Abstract


Power Line Communication (PLC) has been considered as attractive media for high speed data transmission,
particularly for applications like home networking, Internet, voice and data services. For the use of
the Low Voltage networks as high speed data channel the path carrier frequencies within the range up to
30 MHz must be considered. The development of suitable communication systems and the planning of
PLC networks require modeling of the transfer characteristics of the mains network in the mentioned
frequency range. In this paper the considered PLC channel is North Delta Electricity Distribution Company
(NDEDC) Outdoor low voltage cables, the frequency and phase responses of a three-phase power line
channel with interconnections are derived. The channel transfer function is obtained and investigated
using different cable lengths, and different number of branches under a given loading conditions.
Loading mismatching at different branches is considered. Transfer characteristics of power line channel
from distribution transformer to customer pole have been modeled using the chain matrix methodology.
Simulation results indicate that there are significant attenuations and distortions as the number of
branches, cable length, and load mismatching are increased

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