Popular PMI White Paper: Voltage Notching Effects on Harmonic Distortion
Help your utility and gain a better understanding of the voltage notching phenomenon.
Notching is a voltage waveform distortion resulting from short-duration high current pulses.
These distortions typically present themselves graphically as a “notch” in the time domain representation of the waveform.
The IEEE 519-2014 standard, which deals with harmonics includes an appendix (IEEE Std 519, Appendix C) that provides a table of maximum notch depth (measured as a percentage of measured voltage) and notch area.
This white paper discusses some notching scenarios and presents some measurements and calculations for helping a utility better understand this phenomenon...
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