Influence of LV neutral grounding on global earthing systems

Maria Luisa Di Silvestre, Eleonora Riva Sanseverino, Gaetano Zizzo, Enrico Pons, Luigi Parise, Pietro Colella, Pasquale Montegiglio, Elena Reizl Morozova, Angelo De Simone, Antonino Barresi, Filomena Tummolillo, Riccardo Tommasini, Giuseppe Cafaro, Luigi Martirano, Francesco Torelli, Roberto Napoli, Giuseppe Parise, Giovanni Valtorta

Risultato della ricerca: Articlepeer review

9 Citazioni (Scopus)

Abstract

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.
Lingua originaleEnglish
pagine (da-a)22-31
Numero di pagine10
RivistaIEEE Transactions on Industry Applications
Volume53
Stato di pubblicazionePublished - 2017

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.2200.2209???
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