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Impedance Characteristics of Overhead Medium-Voltage Power lines for Power Line Communication  

Chun Dong-wan (Department of electrical and computer engineering, Ajou university)
Park Young-jin (Korea electrotechnology research institute)
Kim Kwan-ho (Korea electrotechnology research institute)
Shin Chull-chai (Department of electrical and computer engineering, Ajou university)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.42, no.11, 2005 , pp. 67-78 More about this Journal
Abstract
In this paper, impedance characteristics of overhead medium-voltage (MV) power line for power line communication (PLC) is analyzed. For analysis, a two-port equivalent network model of MV power lines is derived. By applying the equivalent model and basic transmission line theory, input impedance at the signal induction part is calculated. And also calculated input impedance of power line itself that the medium voltage coupler and coaxial cable effect are removed. For verification, impedance of power lines is measured at a test field for an MV PLC. The results show that impedance of MV power line itself is between $200\;{\Omega}\;and\;300\;{\Omega}$ and converges to a half of their characteristic impedance with increasing frequency. And also measured data is very similar to calculated data.
Keywords
Powerline communication(PLC); Input impedance; Medium-voltage power line;
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Times Cited By KSCI : 1  (Citation Analysis)
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