Waveform Capture data is often the most detailed information available in a PQ recording. Getting good data is not always easy, so it's important to glean all information possible from…
White Papers
Browse our library of power quality technical resources.
450 white papers
Five Methods to Determine the Source of Harmonics
Harmonics are "Non-Linear" current or voltage in an electrical system. Any waveform that deviates from a perfect sine wave has harmonics. Any non-linear load draws harmonic currents and therefore produces…
Power Factor Correction Capacitors and Resonances
This paper explains some of the issues concerning power factor correction, and the side-effect of resonances that can be detrimental to a power distribution system. Also are some solutions to…
Electric Vehicle Charging and Power Quality
Several months ago PMI purchased a Nissan Leaf all-electric vehicle. The Leaf has an approximate range of 90 miles which fits well with our day to day usage for local…
New Graph Templates for Flicker Analysis
Voltage flicker is one of the most visible and common residential complaints, yet one of the most challenging to quantify and address. The IEEE 1453 flicker standard defines some important,…
Utility-Friendly EV Charger Features
The rise in popularity of electric vehicles is becoming an important topic among electric utilities. The effects on the grid (in terms of load and power quality issues) are wide…
Views in ProVision
ProVision lets the user save a specific set and layout of graphs and reports in a View, which can easily be reused for any data file. The default View is…
Evolution of Power Quality Recording
Power quality analysis is a rapidly changing field, and is intrinsically linked to advances in digital technology. From its humble beginnings as analogue recorders that wrote a single voltage directly…
Voltage Optimization with the Boomerang and Canvass
The Boomerang voltage sensor and Canvass software are essential pieces in a successful Voltage Optimization system, providing the long-term reporting needed for verification and system tuning, while also providing real-time…
New Graph Templates for Interharmonics
Analyzing interharmonic data is a complex process, due to the large amount of information recorded. ProVision 3D graphs help for quickly identifying specific interharmonics that merit a closer look, but…
Analyzing Voltage Sags with ProVision
This white paper provides an overview of how to find and analyze various aspects of voltage sags using ProVision and data captured using PMI's recorders. For a given dataset, where…
Introduction to Residential Wind Turbine Generation
This white paper is a basic overview of wind turbines used for residential power generation. It explains how a wind turbine works, the basic theory, what types of wind turbines…