System and method for digitally compensating frequency and temperature induced errors in amplitude and phase shift in current sensing of electronic energy meters

System and method for digitally compensating frequency and temperature induced errors in amplitude and phase shift in current sensing of electronic energy meters

The phase shift in an electronic energy meter is compensated for by obtaining temperature and frequency readings in the meter and using these readings in a digital signal processor (DSP) residing within the electronic energy meter. The frequency and temperature compensation is performed to each phas...

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Bibliographische Detailangaben
Hauptverfasser: HOLDSCLAW SCOTT TURNER, LEIRA STIG, LOBASTOV KONSTANTIN ZH, BEROSET EDWARD JOHN, HEMMINGER RODNEY C, SUTA VALENTIN, BLASCO RICHARD WILLIAM, HEUELL PETER W
Format: Patent
Sprache:eng
Schlagworte:
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:The phase shift in an electronic energy meter is compensated for by obtaining temperature and frequency readings in the meter and using these readings in a digital signal processor (DSP) residing within the electronic energy meter. The frequency and temperature compensation is performed to each phase calibration and the result is stored in the DSP. To reduce the possible influence of noise in the system, the compensated DSP values are filtered to provide a smoothing of the data.