Grounding System Adequacy of HV/MV Substations in Areas With Reduced Accessibility

Author

Parise, Giuseppe ; Parise, Luigi ; Martirano, Luigi ; Farber, Alexander ; Katz, Boris

Author_Institution

Dipt. di Ing. Astronautica, Elettr. ed Energetica (DIAEE), Sapienza Univ. di Roma, Rome, Italy

Volume

51

Issue

3

fYear

2015

fDate

May-June 2015

Firstpage

2038

Lastpage

2044

Abstract

The adequacy of grounding systems has to be periodically verified in operational time. With urban development and building growth adjacent to power systems as high-voltage/medium-voltage substations, it is very rare to have an area around with sufficient accessibility for installing potential and current electrodes. This paper discusses a safety criterion to verify the effectiveness of a grounding system. This criterion suggests conservative tests for both ground potential rise and touch and step voltages that allow to verify the grounding systems´ effectiveness in areas with reduced accessibility and to monitor its evolution in time.

Keywords

earthing; electrical safety; electrodes; substation protection; HV-MV substation; electrode; grounding system; high-voltage-medium-voltage substation; power system; safety criterion; Current measurement; Electric potential; Electrodes; Grounding; Impedance; Impedance measurement; Voltage measurement; Current auxiliary electrodes; grounding systems; grounding tests; measurements of touch and step voltages; substation grounding systems;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2014.2379952

Filename

6983591