Power Quality VIs
- Updated2025-12-23
- 2 minute(s) read
Owning Palette: Electrical Power VIs
Requires: Electrical Power Toolkit. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.
Use the Power Quality VIs to perform power quality measurement in compliance with IEC 61000-4-7:2009, IEC 61000-4-15:2010, and IEC 61000-4-30:2008.
| Palette Object | Description |
|---|---|
| Convert Data to Waveforms | Converts resampled voltage and current data to voltage and current waveforms of different line configurations. This VI also arranges the order of the elements in the waveforms of each three-phase electrical power system for further measurement. For example, the orders are A-B-C-N for the four-channel method and A-B-C for the three-channel method. You must manually select the polymorphic instance you want to use. |
| Initialize System | Sets the basic configuration of the electrical power system based on different line and bus configurations. You must manually select the polymorphic instance you want to use. |
| Subpalette | Description |
|---|---|
| Aggregation VIs | Use the Aggregation VIs to aggregate data at a specific interval according to Class S of IEC 61000-4-30:2008. |
| Events VIs | Use the Events VIs to detect voltage dips, swells, interruptions, and rapid change events as defined in IEC 61000-4-30:2008. |
| Flicker VIs | Use the Flicker VIs to measure instantaneous flicker sensation, short-term flicker severity, and long-term flicker severity as defined in IEC 61000-4-15:2010. |
| Harmonics VIs | Use the Harmonics VIs to perform harmonic analysis according to IEC 61000-4-7:2009 and IEC 61000-4-30:2008. |
| Power & Energy VIs | Use the Power & Energy VIs to calculate power and energy values. |
| Preprocessing VIs | Use the Preprocessing VIs to preprocess signals for further power quality analysis. |
| Scaling & Calibration VIs | Use the Scaling & Calibration VIs to scale a signal to the appropriate engineering units if the signal is from a transducer or to scale a secondary-side measured signal to primary-side signal if the signal is from a transformer. You also use these VIs to apply system calibration correction coefficients to the input signal before performing any power quality measurement. |
| Signaling VIs | Use the Signaling VIs to measure mains signaling voltage on the supply voltage as defined in IEC 61000-4-30:2008. |
| U, I & Freq VIs | Use the U, I & Freq VIs to calculate voltage, current, and frequency values for different electrical power data. |
| Unbalance VIs | Use the Unbalance VIs to calculate symmetrical components and analyze voltage and current unbalance as defined in IEC 61000-4-30:2008. |
| Utility VIs | Use the Utility VIs to perform connection conversion between Delta and Wye, perform AC/DC coupling, and set triggers on input data. |