RESEARCH OF INFLUENCE OF BRANCH LOAD RESISTANCE ON HOUSE WIRING ATTENUATION

Abstract

This article is dedicated to research of broadband over power lines (BPL) transmission systems (TS) when working on domestic electrical wiring networks. The object of research is the component of domestic electrical wiring network (DEWN) - branch. The influence of the branch on DEWN attenuation in the cases of the idle and short type of load was reviewed previously. The influence of the complex load impedance on the branch operating attenuation is investigated in the article. The circuit theory is applied for this. Calculations are carried out and the results of research of frequency characteristics of attenuation of branch, formed with PPV type wire (the cross-sectional area of the conductor is 1,5 mm2), in the range of 1 MHz to 32 MHz are given. The comparison of frequency branch attenuation characteristics is carried out on the following parameters: the passband width, the center frequencies and the attenuation in adjacent passbands, separation between center frequencies of adjacent bandwidths. The condition of achieving the maximum bandwidth and minimal attenuation of the branch with the load, that has complex impedance, is given. Carrying out the DEWN frequency characteristic correction by influencing to the load resistance is proposed.