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On the time invariance of PLC channels in complex power networks

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4 Author(s)
Raugi, M. ; Dept. of Electr. Syst. & Autom., Univ. of Pisa, Pisa, Italy ; Tao Zheng ; Tucci, M. ; Barmada, S.

In this paper new time invariant properties of PLC (Power Line Communication) channels are pointed out. First, we have obtained an equivalent lumped circuit that represents the transmission line characteristic of a power cable starting from the analytical solution of the telegrapher's equations. Then, the Y matrix has been employed to compute the transfer function between power network ports, taking into account load variations. The effect of a high number of branches in the network on transfer function diagrams is investigated. Both simulation and measurement show that in a complex power network (with several parallel connected branches) the time varying phenomenon of the transfer function, caused by the load on-off switching, is strongly reduced. A demonstration is here provided to support these results.

Published in:

Power Line Communications and Its Applications (ISPLC), 2010 IEEE International Symposium on

Date of Conference:

28-31 March 2010