2004•Journal of Tsinghua University(Science and Technology)Requires access
Analysis of power-line high frequency impedance characteristics
Jingbo Guo
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Abstract
The analysis of the high frequency impedance in a distribution network is an important aspect of power-line communication. The high frequency impedance of the power line network band is first analyzed using transmission line theory. Analysis of the characteristics of the equivalent load impedance on the complex plane can determine the influence of the load impedance on the characteristics of the transmission line driving-point impedance. The analysis can be generalized for the cases of interconnected power lines and fork-connected power lines to provide a method to analyze the impedance of large-scale power networks. The results are used to analyze the network parameters' effect on the power-line impedance, and to develop measures to restrain impedance fluctuations. Strategies could be developed to reduce the influence of transmission network impedance fluctuations on the carrier.