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Measuring Voltage
Regulation in PQ Canvass
This white paper introduces the Voltage Regulation Compliance Report in PQ Canvass—an automated way to evaluate RMS voltage performance against ANSI C84.1 standards. The report calculates time-in-tolerance, Range A/B excursions, and daily profiles, giving utilities a clear picture of whether service and utilization voltages stay within prescribed limits. With DER integration and variable feeder loading, maintaining steady voltage is more complex than ever. This tool transforms raw PQ data into clear, defensible compliance summaries that help utilities pinpoint issues, plan corrective actions, and verify results over time.
Key topics covered:
- Overview of ANSI C84.1 Range A and Range B voltage bands
- Differentiating service vs. utilization voltage contexts
- Using PQ Canvass reports to assess steady-state performance
- Evaluating DER-induced voltage rise with Annex D and IEEE 1547 criteria
- Graphs, histograms, and observations for compliance documentation
Why utilities should care:
Voltage regulation is fundamental to power quality, equipment protection, and customer confidence. Even minor deviations can trigger nuisance operations or damage sensitive loads. By automating the evaluation process and visualizing key metrics, PQ Canvass gives engineers a consistent, standards-based workflow to track voltage performance, identify systemic trends, and demonstrate compliance across the grid.
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