On August 12th, 2014, the IEEE Standards Association updated their 519 standard for Harmonic control in electrical power systems. One of the first things you will notice about the updated…
White Papers
Browse our library of power quality technical resources.
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Approaching Power Quality Monitoring Site-Work
Power quality (PQ) monitoring provides insightful information that can be used to detect industrial and residential power disturbances, and provide clues for mitigation and problem resolution. Having the proper power…
Understanding PMI Data Record Types – Part 1
The job of any power monitor is to record all interesting data and leave unrecorded the vast majority of boring, unremarkable data. The tricky part for a monitor is deciding…
Photovoltaic Monitoring Setup Recommendations
Photovoltaic (PV) systems generate new power quality and even basic grid stability challenges. The rapid deployment of PV generation requires comprehensive monitoring to help understand and quantify the impacts on…
Advanced Waveform Capture with ProVision
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…
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…
