Rapid Voltage Change (RVC) represents a specific category of power quality phenomena characterized by a fast transition in the RMS voltage between two steady-state conditions. Unlike a voltage dip or…
White Papers
Browse our library of power quality technical resources.
447 white papers
High Order Harmonics
Harmonic Distortion has long been recognized as a primary concern in power quality, traditionally monitored only through the 51st harmonic. This boundary was sufficient for decades, when most nonlinear loads…
Case Study: Tensor in a Backyard Greenhouse
Introduction Effective greenhouse management requires consistent monitoring of environmental extremes and equipment performance. This white paper examines the role of the PMI Tensor in verifying the adequacy of ventilation and…
Power Quality Focus Areas with Merlin™
Introduction Power quality investigations are often intricate, time consuming, and prone to oversight. Faced with a long duration recording, engineers must sort through an enormous volume of events, trends, and…
Datacenter Power Consumption III
Previous white papers covered the basics of datacenter power consumption and the frantic pace of growth and general challenges facing utilities responsible for supplying these mass consumers. Northern Virginia is…
Detailed Waveform Analysis with Merlin™
Power Quality investigations are frequently complex, difficult, tedious and error prone. When sitting down to analyze a long duration power quality recording as part of a critical investigation, the vast…
Merlin™: AI-Assisted Power Quality Analysis In PQ Canvass
Merlin™ is an AI-assisted analysis suite built for PQ Canvass. Instead of manually stepping through dozens of waveforms and days of trend data, Merlin™ reviews an entire recording and presents…
Voltage Unbalance and Polyphase Induction Motors
While three-phase AC squirrel-cage motors have been around and reliable since 1889, courtesy of Mikhail Dolivo-Dobrovolsky, one issue that has plagued their operation and lifespan throughout the years has been…
Meet Merlin™: How AI is Transforming PQ Analysis
As grid and load complexity increases and distributed generation proliferates, utilities face a torrent of sensor data that outpaces human capacity to interpret it. This paper introduces Merlin™, an analyst-grade…
Visualizing Loose Neutrals with RMS Capture Graphs
Loose neutrals represent one of the most hazardous and subtle single-phase service issues encountered by utility power quality (PQ) engineers. The condition arises when the neutral conductor connecting the center…
Introduction to Temporary Overvoltage
Temporary overvoltage is a common, but often overlooked stress condition on modern electric distribution systems. Although it receives less attention than lightning and fast transients, it can damage equipment, overheat…
Analysis of Capacitor Bank Operation in Waveform Files
Electric utilities use capacitor banks to control power factor and regulate voltage on distribution systems. This paper describes a three-part method to recognize capacitor bank switch events within a power…