A Method for Studying the Current Field Generated by Interconnected Grounding Systems

Bronzini, Marco; Delvecchio, Giuseppe; Mitaritonna, N.; Pugliese, P.; Labini, M. Sylos

doi:10.1007/1-4020-3169-6_43

Cited by 3 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this way, the currents flowing from a trunk to the neighboring ones became new variables and can be determined together with the leakage current distribution along conductors [19].…”

Section: The Models: Masm and Femmentioning

confidence: 99%

“…It is possible to extend the applicability of the MaSM to the case of long buried conductors [19], [21]. The insight is to consider each of the conductors subdivisions (sub-areas or trunks) as separate grounding electrodes, connected to the trunks immediately before and after by means of an admittance.…”

Section: The Models: Masm and Femmentioning

confidence: 99%

“…In order to study the mutual interferences, due to proximity effects, between leaking systems and passive conductive elements (not energized independent ground-grids or extraneous conductive parts), system (3) can be easily extended [19]. The procedure consists in subdividing also the passive metallic elements, as well as the leaking systems, into subareas, and in considering each leaking system and each metallic element as a separate grounding electrode, active or passive, according to whether it leaks current or not.…”

Section: The Models: Masm and Femmentioning

confidence: 99%

See 2 more Smart Citations

Global Earthing System: Can Buried Metallic Structures Significantly Modify the Ground Potential Profile?

Pons

Colella

Tommasini

et al. 2015

IEEE Trans. on Ind. Applicat.

View full text Add to dashboard Cite

1 --Global Earthing Systems (GESs), created by the interconnection of local Earthing Systems (ESs), should guarantee the absence of dangerous touch voltages. According to international Standards, one of the reasons for this safety characteristic of GESs is that MV and LV grounding systems form a quasi-equipotential area.Typical examples of GESs are in city centers, thanks to the high number of interconnected grounding systems in the area. For this reason, in addition to ground-grids, also other metallic parts with different primary functions shall be considered: for example, water and gas pipes, tramway tracks and building foundations can modify the electric potential distribution in the area.In this paper, a model based on the Maxwell's sub-areas method (MaSM) is used to evaluate how buried metallic parts, not intentionally connected to ground-grids, modify the electric potential on the soil surface.Firstly, the MaSM model is validated with experimental measurements on a simple electrodes configuration. The measured voltages are compared with the MaSM results and with the results obtained with a FEM model simulated with COMSOL Multiphysics.Then the simulations are carried out on a realistic urban test case.

show abstract

“…In this way, the currents flowing from a trunk to the neighboring ones became new variables and can be determined together with the leakage current distribution along conductors [19].…”

Section: The Models: Masm and Femmentioning

confidence: 99%

Section: The Models: Masm and Femmentioning

confidence: 99%

Section: The Models: Masm and Femmentioning

confidence: 99%

See 1 more Smart Citation

Global Earthing System: Can Buried Metallic Structures Significantly Modify the Ground Potential Profile?

Pons

Colella

Tommasini

et al. 2015

IEEE Trans. on Ind. Applicat.

View full text Add to dashboard Cite

show abstract

“…It is possible to extend the applicability of MaSM to the case of a long buried conductor [14]. With reference to Fig.…”

Section: B Long Buried Conductors Quasi-static Modelmentioning

confidence: 99%

Influence of LV Neutral Grounding on Global Earthing Systems

Cafaro

Montegiglio

Torelli

et al. 2017

IEEE Trans. on Ind. Applicat.

View full text Add to dashboard Cite

International Standards define a Global Earthing System as an earthing net created interconnecting local Earthing Systems (generally through the shield of MV cables and/or bare buried conductors). In Italy the Regulatory Authority for Electricity and Gas requires Distributors to guarantee the electrical continuity of LV neutral conductor. This requirement has led to the standard practice of realizing "reinforcement groundings" along the LV neutral conductor path and at users' delivery cabinet. Moreover, in urban high load scenarios (prime candidates to be part of a Global Earthing System), it is common that LV distribution scheme creates, through neutral conductors, an effective connection between grounding systems of MV/LV substations, modifying Global Earthing System consistency. Aim of this paper is to evaluate the effect, in terms of electrical safety, of the above mentioned LV neutral distribution scheme when an MV-side fault to ground occurs. At this purpose simulations are carried out on a realistic urban test case and suitable evaluation indexes are proposed.

show abstract

Influence of LV neutral grounding on global Earthing Systems

Cafaro

Montegiglio

Torelli

et al. 2015

2015 IEEE 15th International Conference on Environment and Electrical Engineering (EEEIC)

View full text Add to dashboard Cite

International Standards define a Global Earthing System as an earthing net created interconnecting local Earthing Systems (generally through the shield of MV cables and/or bare buried conductors). In Italy the Regulatory Authority for Electricity and Gas requires Distributors to guarantee the electrical continuity of LV neutral conductor. This requirement has led to the standard practice of realizing “reinforcement groundings” along the LV neutral conductor path and at users' delivery cabinet. Moreover, in urban high load scenarios (prime candidates to be part of a Global Earthing System), it is common that LV distribution scheme creates, through neutral conductors, an effective connection between grounding systems of MV/LV substations, modifying Global Earthing System consistency. Aim of this paper is to evaluate the effect, in terms of electrical safety, of the above mentioned LV neutral distribution scheme when an MV-side fault to ground occurs. At this purpose simulations are carried out on a realistic urban test case and suitable evaluation indexes are proposed

show abstract

A Method for Studying the Current Field Generated by Interconnected Grounding Systems

Cited by 3 publications

References 2 publications

Global Earthing System: Can Buried Metallic Structures Significantly Modify the Ground Potential Profile?

Global Earthing System: Can Buried Metallic Structures Significantly Modify the Ground Potential Profile?

Influence of LV Neutral Grounding on Global Earthing Systems

Influence of LV neutral grounding on global Earthing Systems

Contact Info

Product

Resources

About