A review of electrical metering accuracy standards in the context of dynamic power quality conditions of the grid

R. Quijano Cetina, Andrew J. Roscoe, P.S. Wright

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

3 Citations (Scopus)
306 Downloads (Pure)

Abstract

Numerous changes in electrical grid schemes, like the inclusion of renewable energy, the rise of non-linear loads and the emergence of electric vehicle charging, increases variable power quality conditions of the grid. In this dynamic scenario where energy could flow in both directions and the waveforms could be highly distorted, accuracy becomes a crucial factor for the correct measurement of electrical energy and power values. Errors in the assessment of these values have significant ramifications for revenue, billing and/or control. This non-ideal power quality scenario produces an error in electricity meters, that is not yet well known since there is no standardised procedure to calibrate meters under typical or emerging distorted waveform conditions. Current standards relevant for revenue energy meters like EN 50470-3:2006 allows measurements error up to ±2.5% while local regulations could be even more permissive. In order to establish an electricity fair trade market and meet expectations from consumers and utilities, electricity meters should arguably comply with higher accuracy standards. In this paper, the pertinence and possible impact of including tests under distorted waveform conditions, as well as new accuracy requirements on standards applicable to electricity meters for billing purposes will be discussed.
Original languageEnglish
Title of host publication52nd International Universities Power Engineering Conference (UPEC), 2017
Place of PublicationPiscataway, N.J.
PublisherIEEE
Number of pages5
ISBN (Print)978-1-5386-2345-9
DOIs
Publication statusPublished - 28 Aug 2017
Event52nd International Universities' Power Engineering Conference - T.E.I. of Crete, Heraklion, Crete, Greece
Duration: 29 Aug 20171 Sep 2017
http://www.upec2017.com/

Conference

Conference52nd International Universities' Power Engineering Conference
Abbreviated titleUPEC 2017
CountryGreece
CityHeraklion, Crete
Period29/08/171/09/17
Internet address

Keywords

  • electrical grid
  • electricity meters
  • calibration
  • accuracy standards
  • wave form conditions
  • power values

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