Investigation of current variation effect on PLC channel characteristics of low-voltage high power busbar systems

Abstract

This paper aims to analyze communication characteristics of the high current low-voltage (LV) busbar systems in 1-50 MHz frequency range due to the fact that busbar as an integrated part of the overall Power Line Communications (PLC) channel, it is necessary to investigate its communication characteristics. Firstly, the modeling of a compact structure LV busbar system is described. Then, this system carried out by an Electromagnetic (EM) analysis simulation tool based on methods of moments (MoM). Channel characteristics are obtained based on scattering parameters (S parameters) for the unit length (3 m) busbars. Characteristic impedances (Zc) are obtained approximately 22 , 18 , 14 , 11.5 and 9.7 for different busbars that have 1000 A, 1250 A, 1600 A, 2000 A and 2250 A current levels, respectively. On the other hand, the busbar length is changed as 3 m, 6 m, 9m and 12 m. The resonance frequencies for these lengths are calculated 33 MHz, 16 MHz, 11 MHz and 8 MHz, respectively. The results are given both graphical and numerical forms.

Applicability Comparison of Transmission Line Parameter Extraction Methods for Busbar Distribution Systems

“…Due to a busbar having three-phases, it can be defined as six different two-port network namely L1-N, L2-N, L3-N (phase to neutral) and L2-L1, L3-L1, L3-L2 (phase to phase) [1,2,25,26]. S-parameters measurements were made for all possible port connections.…”

“…In the literature, there is a gap about the characterization of the busbar distribution systems for broadband PLC applications which should be closed. In particular, busbars should be analyzed as transmission lines [1,2]. In the literature, several techniques have been introduced to extract the transmission line parameters for different transmission lines (RLGC parameters, characteristic impedance Z c , and propagation constant γ).…”

RLGC(f) modeling of a busbar distribution system via measured S-parameters at CENELEC and FCC bands

“…While lossy transmission line models may equally be described in terms of characteristic impedance (Z c ) * Correspondence: zhasirci@ktu.edu.tr and propagation constant (γ), designers generally focus on RLGC parameters. Busbar systems may also be described as transmission lines [9,10] and represented with RLGC parameters as the other power cables. Many studies have examined the derivation of per-unit-length parameters for power cables.…”

“…Hasirci et al [10] presented the propagation characteristics of different current levels in copper conductor series busbar systems at 1-50 MHz. Some works [9,10] are simulation-based studies that require experimental validation.…”

Modeling and Link Performance Analysis of Busbar Distribution Systems for Narrowband PLC

“…Whereas lossy transmission line models may equally be described in terms of the characteristic impedance (Z c ) and propagation constant (γ), designers are generally focused on RLGC parameters. Judging from here, busbar system can also be described as a transmission line [2], [3] and can be represented with RLGC parameters as the other power cables. In the literature, there are many studies about power cables and extraction of the p.u.l.…”