Prediction models of standing wave patterns on distribution line carrier channels

Abstract

The performance of carrier channels on multiconductor distribution networks is predicted by accurate simulation models and efficient analysis methods in a frequency range up to a few hundred kHz. The network may have a tree- or a mesh-type configuration, with series or shunt lumped loads, junctions of different line sections, overhead or buried cable lines. The carrier channel is realised by conductor-to-ground or conductor-to-conductor couplings. The two types of excitation require different simulation models valid for phase, and mesh quantities respectively:a matrix procedure is developed for rapid transformation of the phase-model into a mesh model. The nodal, and mesh, approaches are proposed in two methods, which offer the possibility of comparing the results and reducing the computer runtime to evaluate, respectively, voltage and current. The prediction models are utilised for calculating the signal voltage attenuation along carrier channels on buried cable networks of a primary distribution system with cascade- or tree-type configuration.