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Streamline Power Quality Analysis with Interharmonic THD Measurements
This white paper explores the use of Total Harmonic Distortion (THD) measurements for harmonic and interharmonic groups and subgroups as an efficient method for identifying power quality issues. It demonstrates that recording only group and subgroup THDs, rather than full interharmonic spectra, conserves memory and simplifies analysis without sacrificing the ability to detect distortion problems. The paper provides practical guidance on setup using the Revolution recorder and ProVision software, emphasizing when detailed interharmonic data is necessary and when aggregate THD values are sufficient.
Key topics include:
- Definition of THD
- Using the THD of Harmonic and Interharmonic Group and Subgroup Measures
- ProVision Setup for Harmonic and Interharmonic THDs
Why utilities should care:
Efficiently identifying and quantifying harmonic and interharmonic distortion enables faster troubleshooting and reduces data storage requirements, supporting better resource allocation and more effective power quality management across distribution networks.
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