With the push for energy efficiency comes the proliferation of non-linear loads whose overall effect on the power transmission system may not always be as beneficial as originally intended. The…
White Papers
Browse our library of power quality technical resources.
432 white papers
Using Standard Deviation To Get More from Daily Profiles
The Canvass power quality portal provides the user many different tools for analyzing voltage, current and power over considerable periods of time. One such tool is the Daily Profile Graph,…
Overview of Harmonic Vector Diagrams
This white paper is an overview of Harmonic Vector Diagrams. The basics of 60 Hz phasors and harmonics are described, and steps for accessing harmonic vector diagrams in ProVision are…
Estimating THD with PF and DPF
True power factor (PF) and displacement power factor (DPF) are commonly available on power analyzers and loggers. Although useful on their own, together they can help estimate current THD, even…
Exporting Harmonics with the ProVision Bulk Export Tool
Harmonic stripcharts can generate huge amounts of data. When using harmonic data outside of ProVision (for computing system-wide TDD, comparison with other data sources, etc.), a way is needed to…
Strategies for Investigating Flicker
Investigating flicker issues with PMI recorders can be straightforward if the right data is collected, and analyzed with ProVision. By enabling and examining Pst and IFL flicker data, in addition…
Spot Sags, Loose Neutrals, THD, and More with Custom Graphs
Finding voltage sags, loose neutrals, THD correlations, and other PQ problems in a mountain of recorded PQ data can be time consuming at best. The ProVision Custom Graph Wizard lets…
Boomerang DNP3 Point Map 2.0
The Boomerang family of wireless voltage, current, and power monitors supports the DNP3 protocol for monitoring and control of a Boomerang when used as a DNP3 outstation. The original Boomerang…
SNTP Configuration for the Revolution
PMI's Revolution power quality recorders are available with Ethernet/networking capabilities which are easily configurable to allow quick connection and communication over a company's network. One of these network capabilities is…
Understanding Real, Reactive, and Apparent Power
This white paper defines the differences between Real Power, Reactive Power, and Apparent Power in terms used by the power distribution industry. Here the relationships between these different types of…
Understanding Harmonics
With the increase in nonlinear loads (VFDs, high efficiency heat pumps, electronic power supplies, etc.) and the reduction in excess distribution capacity, harmonic distortion is an increasingly common power quality…
Introduction to Electric Vehicle Systems
This paper, the first of a multi-part series, covers the fundamentals of electric vehicle charging stations, charge modes, plug configurations, levels, and basic operation. Electric vehicles, although very efficient, are…
