Improvement of safety of autonomous electrical installations by implementing a method for calculating the electrolytic grounding electrodes parameters
Journal Title: Восточно-Европейский журнал передовых технологий - Year 2018, Vol 5, Issue 5
Abstract
We have solved the task of safety improvement in the grounding process of autonomous mobile electrical installations. Existing procedures for the calculation of normalized resistance of grounding electrodes in electric installations have been examined and studied. Their main drawbacks have been revealed: the difficulty and complexity of calculations; the probabilistic and approximate character; the use of source data taken to calculate the electrophysical parameters of stationary grounding electrodes; the calculations do not account for the structural-phase structure of soil and the volume of electrolyte. Based on the application of percolation theory and the apparatus of fractal-cluster geometry, we have modeled the process of electrolytic grounding in heterogeneous soils of different porous structure, which possess the percolation and fractal properties. A physical model of the process of electrolytic grounding has been developed, which takes into consideration the soil structure properties when changing the fractal dimensionality of a cluster over a certain range that forms the electrolytic grounding conductor with the normalized resistance. It has been shown that the model of conductivity of the electrolytic grounding electrode is defined by the soil electrical conductivity in a percolation channel of the porous structure of soil and can be considered as a function of the volumetric concentration of the electrolyte and the size of the volumetric structure of the electrolytic percolation cluster. We have derived analytical expressions to relate the normalized resistance of electrolytic grounding conductors and the specific resistivity of soil to the fractal dimensionality, volume of the electrolyte, the number of pores to the electrolyte, density of a geometrical volumetric body. We have improved a method for calculating the electrophysical parameters of electrolytic grounding conductors, based on accounting for the main linear size of the cluster of an electrolytic volumetric body, which coincides with the electrolyte penetration depth for various soil structures. We have established conditions for conductivity of the electrolytic grounding conductor in order to ensure safety during operation of the autonomous mobile electrical installation
Authors and Affiliations
Pavlo Budanov, Kostiantyn Brovko, Artem Cherniuk, Iryna Pantielieieva, Yuliya Oliynyk, Nataliia Shmatko
Keywords
Related Articles
- EP ID EP528175
- DOI 10.15587/1729-4061.2018.144925
- Views 133
- Downloads 0
The study of multicomponent loading effect on thinwalled structures with bolted connections
<span lang="EN-US">Features of influence of various factors on the stress-strain state of composite thin-walled structures with bolted connection of separate elements were studied on an example of the test problem. As an...
Forming the structure of whipped desserts when introducing the food additive "Magnetofood" to their formulation
<p>The food additive "Magnetofood", in the form of a nanopowder with particles the size of (70‒80) nm, has been designed and proposed as an improver for the structure of whipped desserts. "Magnetofood" can both independe...
Development of a method for triangulation of inhomogeneous regions represented by functions
<p>In the process of designing structures from inhomogeneous materials, there is the need to build discrete models that consider the peculiarities of the geometrical shape of subdomains from different materials. The firs...
An approximating mathematical model of interaction between a freely rotating disk and soil
<p>A generalized mathematical model of disk interaction with soil was built under general assumptions regarding the mode of the disk knife motion in soil, namely, in a mode of slippage, skidding or rolling without slippa...
Determining the influence of carbon black in oil on the wear resistance of elements in the tribological system "steel – oil – bronze"
<p>The results of experimental research into the influence of the concentration of carbon black in industrial oil I-30А and on wear resistance of the tribological system "steel-oil-bronze" are presented. It is assumed th...