Accurate voltage measurement with electric field sampling using permittivity-shielding

TitleAccurate voltage measurement with electric field sampling using permittivity-shielding
Publication TypeJournal Article
Year of Publication2002
AuthorsChavez, P. P., F. Rahmatian, and N. A. F. Jaeger
JournalPower Delivery, IEEE Transactions on
Volume17
Pagination362 -368
Date Publishedapr.
ISSN0885-8977
Keywordsdielectric materials, electric field effects, electric field measurement, electric field sampling, electric field sensors, electric sensing devices, high-voltage techniques, IEC 60044-2 0.2 metering class accuracies, insulators, numerical simulations, optical sensor technology, permittivity, permittivity-shielding, shielding, stand-off insulator, strong stray field effects, voltage measurement, voltage sensor designs
Abstract

This paper introduces permittivity-shielding which enables the measurement of voltage with very few electric field sensors. Voltage sensor designs using permittivity-shielding can exploit existing optical sensor technology without the need for the expensive and potentially hazardous insulation found in many modern optical voltage transducers (OVTs). Numerical simulations demonstrate that a voltage sensor consisting of 100 M Omega; shielding and six electric field sensors, or less, mounted inside an "off-the-shelf" stand-off insulator can achieve IEC 60044-2 0.2 metering class accuracies ( lt;0.2% magnitude error and lt;10 minutes phase error) even in the presence of strong stray field effects

URLhttp://dx.doi.org/10.1109/61.997900
DOI10.1109/61.997900

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