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…
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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…
Predictive Power Monitoring
Power Quality Monitoring data can be used to detect and identify potential problems either before equipment begins to fail or before it fails completely. Symptoms recorded by PQ monitors can…
Minimizing Data Usage with DNP3
The DNP3 protocol was originally developed back in the day when a wired connection to devices was the norm. The protocol was designed to be robust and very reliable but…
The Basics of Power Quality Monitoring
PMI's line of power quality (PQ) monitoring tools can provide insightful information that can be used to detect industrial and residential power disturbances such as sags, swells, transients, waveform distortions,…
Introduction to Residential Photovoltaic Systems
This white paper explains the basic elements that make up a PV system– including the different types, how they work, and what impact they have on both the grid and…
Histogram Statistics in Canvass
Histograms in Canvass are powerful, yet underused graphs. In addition to presenting measured data visually, a list of histogram statistics are also computed by Canvass. Histogram graphs in Canvass compute…
Configuring a Virtual Private Network
The use of telemetry devices equipped with cellular modems for low-bandwidth measurement and data collection has soared in recent years. There are many aspects to a successful deployment of cellular…
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,…
Threshold Configuration Settings in Canvass
The settings configuration window is a new feature in PMI's Canvass web software. It allows the user to set thresholds for each channel and measure supported by the recorder. When…
Per-Unit Graphing with Canvass
Canvass is a web-based power quality portal designed and developed by PMI to allow users to perform power quality analysis from anywhere they have an internet connection and a web…
Case Study: Impact of Solar Photovoltaic Installations
2012 was a historic year for the U.S. solar industry. There were 3,313 megawatts (MW) of photovoltaic (PV) capacity installed throughout the year, which represents 76% growth over 2011’s record…
