Search

Your search keyword '"Valtorta, Giovanni"' showing total 15 results
Start Over Author "Valtorta, Giovanni"
15 results on '"Valtorta, Giovanni"'

6. Influence of LV Neutral Grounding on Global Earthing Systems

Author

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

Published
2017
Full Text
View/download PDF

7. Currents Distribution During a Fault in an MV Network: Methods and Measurements

Author

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

Published
2016
Full Text
View/download PDF

9. Influence of LV Neutral Grounding on Global Earthing Systems.

Author

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

Subjects
ELECTRIC current grounding, ELECTRICAL engineering standards, ELECTRICAL conductors, STANDARDS
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. The aim of this paper is to evaluate the effect, in terms of electrical safety, of the aforementioned LV neutral distribution scheme when an MV-side fault to ground occurs. For this purpose, simulations are carried out on a realistic urban test case and suitable evaluation indexes are proposed. [ABSTRACT FROM AUTHOR]

Published
2017
Full Text
View/download PDF

15. Monitoring Cable current and Laying Environment Parameters for Assessing the Aging Rate of MV Cable Joint Insulation

Author

Giovanni Valtorta, Lorenzo Peretto, Giovanni Mazzanti, Giuseppe Amoroso, Alessandro Mingotti, Abbas Ghaderi, Roberto Tinarelli, Stefano Danesi, Peretto, Lorenzo, Tinarelli, Roberto, Ghaderi, Abba, Mingotti, Alessandro, Mazzanti, Giovanni, Valtorta, Giovanni, Amoroso, Giuseppe, and Danesi, Stefano

Subjects
Distribution networks, business.industry, 020209 energy, Humidity, 02 engineering and technology, Structural engineering, Laying, Cable Joint, 0202 electrical engineering, electronic engineering, information engineering, Environmental science, Current (fluid), business, Joint (geology), measurement systems, ageing
Abstract

Joints are critical components of MV cable distribution networks and the aging rate of their insulation is particularly sensitive to temperature due to loading current and laying environment parameters. This makes it very useful to monitor the load current and laying environment parameters (humidity, pressure and temperature) of joints, so as to single out conditions that might accelerate joint insulation aging rate critically. This paper illustrates the installation of humidity, pressure, current and temperature sensors - in a partnership between e-distribuzione (the main DSO in Italy) and the University of Bologna - to assess the aging rate of cable joint insulation in underground distribution networks.

Published
2018

Catalog

Books, media, physical & digital resources
See catalog results