Визначення електричних характеристик заземлювальних пристроїв електроустановок на основі повного моделювання об'ємних заземлювачів

Abstract

The thesis for the degree of candidate of technical sciences, specialty 05.14.02 – Electric stations, networks and systems. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2018. The thesis is devoted to the important scientific and applied problem solution in improving the electrical installations grounding devices by optimizing the design parameters of complex combined grounding systems of projected or existing electrical installations by using manufactured high conductivity ground electrodes, as well as by taking into account natural concentrated grounds. The thesis research analyzes mathematical models of non-equipotential arbitraryshaped grounding device for getting grounding grid normalized parameters. The new engineering solution is got is the grounding electrode of increased current spreading conductivity, which will be realized as a vertical electrode with current installing antirust coating, placed in the limited volume of fine-dyspersated technical carbon. The mathematical model of non-potential grounding device of electrical installations has been built, which differs from the existing taking into account of volumetric grounding, located in a conducting two-layer semi-space. The developed model allows the introduction of natural grounding, as well as a vertical electrode of high conductivity, in grounding device normalized parameters computation, by the set of rectilinear electrodes.