Smart grid measurement uncertainty: definitional and influence quantity considerations

William Dickerson, Allen Goldstein, Harold Kirkham, Kenneth Martin, Andrew Roscoe, Roel de Vries, Paul Wright

Research output: Contribution to conferencePaperpeer-review

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Measurement uncertainty, in general terms, is an expression of the quality of a measurement. It is typically quan- tified by defining the location and spread of the distribution of a hypothetical infinitely large number of measurements of the thing being measured. The Guide to the Expression of Uncertainty in Measurement (GUM) classifies uncertainties according to whether they are evaluated by statistical means or not. The GUM also mentions that an incomplete definition of the measurand can give rise to large uncertainty in the result. For some of the quantities measured in the Smart Grid, it may be that this "definitional uncertainty" could be a major source of problems. Influence quantities may have a bearing on the result of a measurement without being the subject of the measurement. For example, signal harmonics, noise and temperature effects, while not desired as part of a measurement, exist in power system signals being measured, and they have (sometimes significant) effects on the measurement process.
Original languageEnglish
Number of pages5
Publication statusAccepted/In press - 5 Mar 2018
EventFirst International Colloquium on Smart Grid Metrology - Split, Croatia
Duration: 24 Apr 201827 Apr 2018


ConferenceFirst International Colloquium on Smart Grid Metrology
Abbreviated titleSMAGRIMET
Internet address


  • measurement
  • smart grid
  • uncertainty

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