Influence of LV neutral grounding on global Earthing Systems

Cafaro, Giuseppe; Montegiglio, Pasquale; Torelli, Francesco; Barresi, A.; Colella, Pietro; Simone, Angelo De; Silvestre, Maria Luisa Di; Martirano, Luigi; Morozova, Olena; Napoli, Roberto; Parise, Giuseppe; Pons, Enrico; Sanseverino, Eleonora Riva; Tommasini, Riccardo; Tummolillo, F.; Valtorta, Giovanni; Zizzo, Gaetano

doi:10.1109/eeeic.2015.7165193

Cited by 11 publications

(9 citation statements)

References 6 publications

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“…So, for each measured value of K, it is possible to evaluate the minimum and maximum value of R BC . The more the inequalities (12) are true, the smaller is the R BC range in (11).…”

Section: B Maximum and Minimum Values Of R Bcmentioning

confidence: 99%

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Global earthing systems: Characterization of buried metallic parts

Cafaro

Montegiglio

Torelli

et al. 2016

2016 IEEE 16th International Conference on Environment and Electrical Engineering (EEEIC)

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International Standards IEC 61936-1 and EN 50522 define a Global Earthing System (GES) as the earthing network, created by the interconnection of local earthing systems, that should guarantee the absence of dangerous touch voltages. This is achieved through two effects: the division of the earth fault current between many earthing systems and the creation of a quasi equipotential surface. The second effect can be enhanced by the presence of buried metallic parts, such as light poles and water/gas pipelines, that can modify the earth surface potential profile. In order to characterize these buried conductors, an extensive measurement campaign was organized; in order to determine the resistance to earth of these buried conductors a simplified measurement protocol has been applied to more than 800 metallic objects. In this paper, the measurement setup , the results and their analysis are reported.

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“…So, for each measured value of K, it is possible to evaluate the minimum and maximum value of R BC . The more the inequalities (12) are true, the smaller is the R BC range in (11).…”

Section: B Maximum and Minimum Values Of R Bcmentioning

confidence: 99%

“…The GES effects can be enhanced by other several metallic parts, such as LV ESs, water/gas pipelines, railway and tramway tracks. In fact, these elements are commonly widespread in city centers, urban or industrial areas, that is, where GESs can normally be found [7], [11].…”

Section: Introductionmentioning

confidence: 99%

Global earthing systems: Characterization of buried metallic parts

Cafaro

Montegiglio

Torelli

et al. 2016

2016 IEEE 16th International Conference on Environment and Electrical Engineering (EEEIC)

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“…If metallic parts are widespread but not interconnected with grounding systems, their effect is negligible. An example of important contribution is provided by distributed LV neutral grounding [20], [21], [22].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Review of the Methodologies to Identify a Global Earthing System

Colella

Pons

Tommasini

2017

IEEE Trans. on Ind. Applicat.

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International Standards IEC 61936-1 and EN 50522 define a Global Earthing System (GES) as the earthing network, created by the interconnection of local earthing systems, that should guarantee the absence of dangerous touch voltages. Despite that, Standards do not provide any official practical guidelines for its identification. The official classification of GES areas would lead to a simplification of the design and verification procedures of MV/LV substations grounding systems, with associated economical savings for both Distribution System Operators (DSOs) and MV users. To overcome this regulatory vacuum, several teams of researchers proposed methods to identify the presence of a GES. In this paper, the main methods developed to identify a GES are presented. The different methodologies are applied to a real urban scenario and compared.

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“…Similarly, for the evaluation of the second effect of a GES, field measurements to characterize the most of the metallic parts that can be buried in urban areas were carried out [12]; their effects on the ground potential profile were analyzed by an analytical model, based on the Maxwell's subareas method [13], [14].…”

Section: Introductionmentioning

confidence: 99%

The identification of global earthing systems: A review and comparison of methodologies

Colella

Pons

Tommasini

2016

2016 IEEE 16th International Conference on Environment and Electrical Engineering (EEEIC)

View full text Add to dashboard Cite

International Standards IEC 61936-1 and EN 50522 define a Global Earthing System (GES) as the earthing network, created by the interconnection of local earthing systems, that should guarantee the absence of dangerous touch voltages. Despite that, Standards do not provide any official practical guidelines for its identification. The official classification of GES areas would lead to a simplification of the design and verification procedures of MV/LV substations grounding systems, with associated economical savings for both Distribution System Operators (DSOs) and MV users. To overcome this regulatory vacuum, several teams of researchers proposed methods to identify the presence of a GES. In this paper, the main methods developed to identify a GES are presented. The different methodologies are compared and applied to a real urban scenario.

show abstract

Influence of LV neutral grounding on global Earthing Systems

Cited by 11 publications

References 6 publications

Global earthing systems: Characterization of buried metallic parts

Global earthing systems: Characterization of buried metallic parts

A Comparative Review of the Methodologies to Identify a Global Earthing System

The identification of global earthing systems: A review and comparison of methodologies

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