Accuracy Verification of Simplified Error Correction Method in Digital Electricity Meters

نویسندگان

  • J. Hribik
  • B. Lojko
  • P. Fuchs
چکیده

There are practically four main error sources in digital sampling electricity meters: errors of analogue input circuits, errors of the sampling process, errors of analogue-to-digital (A/D) conversion and errors of digital calculations. Brief description of correction of these errors is given. Very often it is not possible to make correction of every sample. Then, only the final calculated values are corrected and, thus, additional errors are introduced. MATLAB environment was used to find out the errors of such simplified calculations of the active power and the rms value of the voltage in case of harmonic and nonharmonic voltages and currents.

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تاریخ انتشار 2013