2014
DOI: 10.20998/2074-272x.2014.4.13
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On the Problem of Increasing Computation Accuracy for Rated Parameters of Active Electrical Installation Ground Grids

Abstract: В роботі проаналізовано фактори, які впливають на точність розрахунку нормованих параметрів заземлювальних пристроїв діючих електроустановок. Були розроблені та запропоновані напрями для підвищення точності розрахунку нормованих параметрів заземлювальних пристроїв, які полягають у вдосконаленні як експериментального, так і роз-рахункового етапів електромагнітної діагностики стану систем заземлення . В работе проанализированы факторы, влияющие на точность расчета нормируемых параметров заземляющих уст-ройств. Б… Show more

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Cited by 6 publications
(7 citation statements)
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“…Here, this source of constant, stationary or quasistationary current is considered [4,5]. However, mathematical tools and specialized programs that define the structure of multilayer soil based on VES data, serve to resolve narrow-geological problems and is not adapted for use in the diagnosis of grounding systems and the use of existing universal pallets and method modules are expensive and ambiguous [ 6]. In the frame of the electromagnetic diagnosis of grounding devices state programs are used to interpret the VES as two-and three-layer geoelectric structures, such as «VEZ-2Auto» and «VEZ-3», which do not allow to cover all existing in Ukraine soils.…”
Section: Introductionmentioning
confidence: 99%
“…Here, this source of constant, stationary or quasistationary current is considered [4,5]. However, mathematical tools and specialized programs that define the structure of multilayer soil based on VES data, serve to resolve narrow-geological problems and is not adapted for use in the diagnosis of grounding systems and the use of existing universal pallets and method modules are expensive and ambiguous [ 6]. In the frame of the electromagnetic diagnosis of grounding devices state programs are used to interpret the VES as two-and three-layer geoelectric structures, such as «VEZ-2Auto» and «VEZ-3», which do not allow to cover all existing in Ukraine soils.…”
Section: Introductionmentioning
confidence: 99%
“…The operating frequency is selected close to the industry, but differs from it in order to minimize the influence of electromagnetic field working electrical currents. During the VES in the implementation of EMD GD, the parameters of the instrument requirements (measurement limit, sensitivity, and the permissible value of the measuring circuit resistance), and in general the possibility of using a particular installation of VES are determined by the value of the ER and geometrical dimensions of the GD [1,5] but in the literature clear requirements to instruments not available. Therefore, the development of technical requirements for appliances for VES depending on the ER of the soil and the required depth sensing is an urgent task.…”
mentioning
confidence: 99%
“…Therefore, the development of technical requirements for appliances for VES depending on the ER of the soil and the required depth sensing is an urgent task. The development of these requirements it is proposed to implement on the basis of the analysis of the database of VES in different regions of Ukraine near the locations of power plants voltage class of 35 -750 kV [5]. Availability of statistical data on the soil ER and GD sizes allow us to make a probabilistic assessment of the applicability of the instrument in their technical specifications it should be taken into account that the voltage class is crucial for electrical installations' geometrical sizes.…”
mentioning
confidence: 99%
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“…Накопленные данные (с 1997 по 2014 гг. сотрудниками НИПКИ «Молния» была проведена ЭМД ЗУ более чем для 1000 энергообъектов Украины) показывают, что существует значительный разброс удельных электрических сопротивлений (УЭС) и мощностей слоев, поэтому назрела необходимость анализа результатов зондирования грунта в местах расположения энергообъектов для последующего совершенствования программно-технических средств, используемых на расчетном этапе ЭМД ЗУ [2].…”
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