DETERMINATION OF THE SOIL SOUNDING DEPTH FOR THE EARTHING RESISTANCE CALCULATION OF SUBSTATIONS 35 KV

DETERMINATION OF THE SOIL SOUNDING DEPTH FOR THE EARTHING RESISTANCE CALCULATION OF SUBSTATIONS 35 KV

Purpose. Determination of the minimum required sounding depth for calculation of the earthing resistance for substations with a voltage class of 35 kV. Methodology. For each ratio of electrical resistivity values of soil layers, earthing resistance was calculated with changing of the layers separati...

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Date:2020
Main Authors: Koliushko, D. G., Rudenko, S. S., Asmolova, L. V., Tkachova, T. I.
Format: Article
Language:English
Ukrainian
Published: National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2020
Subjects:
earthing arrangement
earthing resistance
the soil sounding
Wenner installation
electromagnetic diagnostics
621.316.99
Online Access:http://eie.khpi.edu.ua/article/view/2074-272X.2020.1.08
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Journal Title:Electrical Engineering & Electromechanics

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Electrical Engineering & Electromechanics
id eiekhpieduua-article-195843
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spelling eiekhpieduua-article-1958432020-02-25T19:53:23Z DETERMINATION OF THE SOIL SOUNDING DEPTH FOR THE EARTHING RESISTANCE CALCULATION OF SUBSTATIONS 35 KV ВИЗНАЧЕННЯ ГЛИБИНИ ЗОНДУВАННЯ ҐРУНТУ ДЛЯ РОЗРАХУНКУ ОПОРУ ЗАЗЕМЛЮВАЛЬНОГО ПРИСТРОЮ ПІДСТАНЦІЙ 35 КВ Koliushko, D. G. Rudenko, S. S. Asmolova, L. V. Tkachova, T. I. заземлювальний пристрій опір заземлювального пристрою зондування ґрунту установка Веннера електромагнітна діагностика 621.316.99 earthing arrangement earthing resistance the soil sounding Wenner installation electromagnetic diagnostics 621.316.99 Purpose. Determination of the minimum required sounding depth for calculation of the earthing resistance for substations with a voltage class of 35 kV. Methodology. For each ratio of electrical resistivity values of soil layers, earthing resistance was calculated with changing of the layers separation depth from 0.4 m to hmax, where hmax is the layers separation depth in a two-layer soil at which the earthing resistance value becomes the same as in a uniform soil. Results. In the experiments carried out, a family of curves was obtained that describes the effect of separation depth of soil layers for various combinations of soil electrical resistivities and geometric dimensions of the earthing arrangement. The accumulated statistical data for substations with a voltage class of 35 kV made it possible to determine the required sounding depth depending on the maximum size of the earthing arrangement and the probability of the relative resistivity falling into the corresponding range of values. An algorithm is proposed for determining the required investigation depth by Wenner method as part of the electromagnetic diagnostics of the earthing arrangement of existing substations with a voltage class of 35 kV. Originality. For the first time, a probabilistic relationship was established between the ratio of the electrical resistivity of soil layers, the size of the earthing arrangement, and the necessary depth investigation of the geological medium. As a result it has been proven that there are substations for which the required sounding depth does not exceed the maximum size of the earthing arrangement. Practical value. The use of the algorithm developed in this work allows increasing the accuracy of the earthing resistance calculation of electrical installations with voltages above 1 kV operating in a network with isolated neutral.  Метою роботи є підвищення точності визначення опору заземлювального пристрою електроустановок напругою понад 1 кВ, що працюють в мережі з ізольованою нейтраллю. Для цього було проаналізовано величину необхідної глибини зондування ґрунту у процесі виконання електромагнітної діагностики стану заземлювального пристрою. Були проведені чисельні експерименти, які полягали у розрахунку електричних параметрів заземлювача, виконаного у вигляді прямокутника розмірами a × b з діагоналлю D і розташованого на глибині 0,3 м у двошаровому ґрунті. Було розглянуто різні варіанти співвідношення питомих електричних опорів ґрунту та розмірів заземлювального пристрою. Врахування статистичного розподілу вказаних параметрів для понад 500 підстанцій України класом напруги 35 кВ дозволило встановити двофакторну ймовірнісну залежність мінімально необхідної глибини зондування ґрунту установкою Веннера. National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2020-02-25 Article Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/2074-272X.2020.1.08 10.20998/2074-272X.2020.1.08 Electrical Engineering & Electromechanics; No. 1 (2020); 52-55 Электротехника и Электромеханика; № 1 (2020); 52-55 Електротехніка і Електромеханіка; № 1 (2020); 52-55 2309-3404 2074-272X en uk http://eie.khpi.edu.ua/article/view/2074-272X.2020.1.08/197144 http://eie.khpi.edu.ua/article/view/2074-272X.2020.1.08/197145 Copyright (c) 2020 D. G. Koliushko, S. S. Rudenko, L. V. Asmolova, T. I. Tkachova https://creativecommons.org/licenses/by-nc/4.0
institution Electrical Engineering & Electromechanics
baseUrl_str
datestamp_date 2020-02-25T19:53:23Z
collection OJS
language English
Ukrainian
topic earthing arrangement
earthing resistance
the soil sounding
Wenner installation
electromagnetic diagnostics
621.316.99
spellingShingle earthing arrangement
earthing resistance
the soil sounding
Wenner installation
electromagnetic diagnostics
621.316.99
Koliushko, D. G.
Rudenko, S. S.
Asmolova, L. V.
Tkachova, T. I.
DETERMINATION OF THE SOIL SOUNDING DEPTH FOR THE EARTHING RESISTANCE CALCULATION OF SUBSTATIONS 35 KV
topic_facet заземлювальний пристрій
опір заземлювального пристрою
зондування ґрунту
установка Веннера електромагнітна діагностика
621.316.99
earthing arrangement
earthing resistance
the soil sounding
Wenner installation
electromagnetic diagnostics
621.316.99
format Article
author Koliushko, D. G.
Rudenko, S. S.
Asmolova, L. V.
Tkachova, T. I.
author_facet Koliushko, D. G.
Rudenko, S. S.
Asmolova, L. V.
Tkachova, T. I.
author_sort Koliushko, D. G.
title DETERMINATION OF THE SOIL SOUNDING DEPTH FOR THE EARTHING RESISTANCE CALCULATION OF SUBSTATIONS 35 KV
title_short DETERMINATION OF THE SOIL SOUNDING DEPTH FOR THE EARTHING RESISTANCE CALCULATION OF SUBSTATIONS 35 KV
title_full DETERMINATION OF THE SOIL SOUNDING DEPTH FOR THE EARTHING RESISTANCE CALCULATION OF SUBSTATIONS 35 KV
title_fullStr DETERMINATION OF THE SOIL SOUNDING DEPTH FOR THE EARTHING RESISTANCE CALCULATION OF SUBSTATIONS 35 KV
title_full_unstemmed DETERMINATION OF THE SOIL SOUNDING DEPTH FOR THE EARTHING RESISTANCE CALCULATION OF SUBSTATIONS 35 KV
title_sort determination of the soil sounding depth for the earthing resistance calculation of substations 35 kv
title_alt ВИЗНАЧЕННЯ ГЛИБИНИ ЗОНДУВАННЯ ҐРУНТУ ДЛЯ РОЗРАХУНКУ ОПОРУ ЗАЗЕМЛЮВАЛЬНОГО ПРИСТРОЮ ПІДСТАНЦІЙ 35 КВ
description Purpose. Determination of the minimum required sounding depth for calculation of the earthing resistance for substations with a voltage class of 35 kV. Methodology. For each ratio of electrical resistivity values of soil layers, earthing resistance was calculated with changing of the layers separation depth from 0.4 m to hmax, where hmax is the layers separation depth in a two-layer soil at which the earthing resistance value becomes the same as in a uniform soil. Results. In the experiments carried out, a family of curves was obtained that describes the effect of separation depth of soil layers for various combinations of soil electrical resistivities and geometric dimensions of the earthing arrangement. The accumulated statistical data for substations with a voltage class of 35 kV made it possible to determine the required sounding depth depending on the maximum size of the earthing arrangement and the probability of the relative resistivity falling into the corresponding range of values. An algorithm is proposed for determining the required investigation depth by Wenner method as part of the electromagnetic diagnostics of the earthing arrangement of existing substations with a voltage class of 35 kV. Originality. For the first time, a probabilistic relationship was established between the ratio of the electrical resistivity of soil layers, the size of the earthing arrangement, and the necessary depth investigation of the geological medium. As a result it has been proven that there are substations for which the required sounding depth does not exceed the maximum size of the earthing arrangement. Practical value. The use of the algorithm developed in this work allows increasing the accuracy of the earthing resistance calculation of electrical installations with voltages above 1 kV operating in a network with isolated neutral. 
publisher National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine
publishDate 2020
url http://eie.khpi.edu.ua/article/view/2074-272X.2020.1.08
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AT rudenkoss determinationofthesoilsoundingdepthfortheearthingresistancecalculationofsubstations35kv
AT asmolovalv determinationofthesoilsoundingdepthfortheearthingresistancecalculationofsubstations35kv
AT tkachovati determinationofthesoilsoundingdepthfortheearthingresistancecalculationofsubstations35kv
AT koliushkodg viznačennâglibinizonduvannâgruntudlârozrahunkuoporuzazemlûvalʹnogopristroûpídstancíj35kv
AT rudenkoss viznačennâglibinizonduvannâgruntudlârozrahunkuoporuzazemlûvalʹnogopristroûpídstancíj35kv
AT asmolovalv viznačennâglibinizonduvannâgruntudlârozrahunkuoporuzazemlûvalʹnogopristroûpídstancíj35kv
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first_indexed 2025-07-17T11:47:56Z
last_indexed 2025-07-17T11:47:56Z
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