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

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 cu...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2015-05, Vol.51 (3), p.2038-2044
Main Authors: Parise, Giuseppe, Parise, Luigi, Martirano, Luigi, Farber, Alexander, Katz, Boris
Format: Article
Language:English
Subjects:
Current auxiliary electrodes
Current measurement
Electric potential
Electrodes
Grounding
grounding systems
grounding tests
Impedance
Impedance measurement
measurements of touch and step voltages
substation grounding systems
Voltage measurement
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Summary: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.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2014.2379952