Computing IEEE 519-2014 Short Time Harmonic Values

Category: PMI Products, Power Quality, PQ Data Analysis, Box Recorder, Harmonics/Interharmonics

IEEE 519-2014 specifies two time periods for analyzing harmonic data: “very short time”, or 3 seconds, and “short time” or 10 minutes. For achieving the best resolution, the 3 second interval should be used in a PQ recording, but without the 10 minute data, the IEEE 519 thresholds cannot be fully applied. A method is shown here to compute the 10 minute short time values from the recorded 3 second values, so both sets of readings are available from a single recording.

 

This white paper includes:

  • Formulas

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