Substation grounding grid resistance measurement using auxiliary circuits vertically disposed on the ground

被引：0

作者：

Amaral, Amanda Botelho ^{[1
]}

Paulino, Jose O. S. ^{[1
]}

Caetano, Carlos E. F. ^{[1
]}

Guimaraes, Maurissone F. ^{[1
,2
]}

Lopes, Ivan Jose S. ^{[1
]}

Schroeder, Marco Aurelio de Oliveira ^{[3
]}

机构：

[1] Univ Fed Minas Gerais, Grad Program Elect Engn, Belo Horizonte, MG, Brazil

[2] Minas Gerais Energy Co, Distribut Act Management Superintendence, Belo Horizonte, MG, Brazil

[3] Univ Fed Sao Joao del Rei, Elect Engn Dept, Sao Joao Del Rei, MG, Brazil

来源：

ELECTRIC POWER SYSTEMS RESEARCH | 2024年 / 233卷

关键词：

Grounding resistance; Grounding measurements; Vertical auxiliary circuits; SCALE-MODEL;

D O I：

10.1016/j.epsr.2024.110497

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An innovative methodology is proposed for measuring the resistance of substation grounding grids located in congested areas, particularly those in urban regions. The significant innovation is the use of auxiliary current and potential circuits vertically arranged on the ground. The feasibility of using the Fall of Potential (FoP) Method is experimentally investigated using the reduced model technique and an appropriate measuring electrode setup is proposed. The possibility of measurement using the two auxiliary electrodes, positioned in relation to the grid under test, obeying a ratio of 76%, is also evaluated. The depth of these measuring auxiliary electrodes for reliable measurements was determined from a theoretical study, a series of computer simulations, an experimental study in a reduced model, as well as measurements on a 100 m 2 grounding grid. The results show the feasibility of using the FoP Methodology as well as the two auxiliary electrodes whose distances to the grid obey the proportion of 76%.

引用

页数：10

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