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

Abstract

-Modeling busbar distribution system as a transmission line is an important subject of power line communication in the smart grid concept. This requires extraction of busbar RLGC parameters, accurately. In this study, a comparison is made between conventional and modified method for the aspect of optimum RLGC parameters extraction in the 1 MHz to 50 MHz frequency band. The usefulness of these methods is shown both in time and frequency-domain analysis. The frequency-domain analyzes show that the inherent power of modified method can eliminate the errors especially due to the discontinuities arise in conventional method. This makes the modeling approach of modified method more advantageous for the busbars due to its robustness against disturbances in the S-parameters measurements which cannot be eliminated with the calibration procedure. On the other hand, time-domain simulations show that the transmission line representation of the modified method is closer to physical reality by handling causality issues.

Channel Model for Low Voltage Three-Core Power Line Communication

“…Because the dielectric constant of insulation medium is considered as a constant, the error between calculation and measurement is obvious. For the busbar energy distribution system with a length of 3m, Zeynep Hasirci uses a nonlinear optimization algorithm to determine the per-unit-length parameters [8], [9]. The algorithm takes the minimum error of all S parameters as the optimization target, which leads to high computational complexity.…”