Harmonics are distortions in the 60Hz voltage or current caused by non-linear loads on the system. Harmonics are of interest to utilities as they can cause damage to equipment, such…
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42 results in Analyzing Waveforms — Clear
Analyzing Waveforms
Defining Interharmonics
Interharmonics are frequency components at non-integer harmonics of the line frequency. The proliferation of large DC-converter variable speed drives and wind/solar inverter generation has led to an increase in interharmonic…
Optimizing Waveform Capture Triggering
Waveform capture is the highest resolution data available for PQ analysis and is often crucial in solving tricky issues. Successfully triggering on the waveform doesn't have to be tricky, though.…
Harmonics from Periodic Waveform Capture
Harmonics are usually recorded as interval (stripchart) data in PMI recorders. Each desired harmonic is recorded as a min/ave/max stripchart trace, for each desired voltage and current channel. Although this…
Transient Capture with the Vision and Revolution
Capture high-speed, high-voltage transients with the Revolution and Vision, using the optional transient capture system. Transient capture uses 1 MHz sampling for voltage, giving a 1 microsecond sample window, and…
Waveshape Triggering for Waveform Capture
A new method of triggering waveform capture in the Revolution and Vision is introduced, designed for capturing changes in power line waveform shape.
