The explosive growth of modern electronic loads presents a challenge to utilities in the form of waveform distortion. The IEEE 519 standard is an important tool for utilities, providing limits…
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Power Quality
IEEE 1250 Overview: An Introduction to Power Quality
Whether you are new to the study of power quality, or an experienced PQ pro looking for a quick reference, IEEE Standard 1250 is the place to start. IEEE 1250…
Analyzing Portable Power Station Inverter Power Quality
An engineer at PMI purchased a portable power station and wanted to verify the quality of the inverter before attaching sensitive electronics. The steps used to quantify the output quality…
Dimming Residential Lighting
Dimmer switches for residential lighting applications have been available for decades. They are fairly ubiquitous in many homes and are often used for mood lighting and energy savings. The technology…
Interharmonic Analysis with Python
Traditional harmonic analysis in electrical systems has revolved around looking at the spectral content on, well, the magnitudes of harmonic frequency components. The IEEE 519 specification provides guidelines for measuring…
Automatic IEEE 519 Report Generation
The IEEE 519-2014 standard specifies measurements, analysis methods and limits for harmonic voltage and current. The 2014 version is very rigorous with multiple sets of limits, time intervals, statistical groupings,…
Introduction to LED Lighting
LED (Light-Emitting Diode) based lighting has been around for a little over 20 years and it continues to take over more and more of the general lighting market. The technology…
Introduction to Voltage Transients
Transients due to nearby lightning or switching events can cause degradation or failure of almost any electrical equipment. Impulsive transients can pass through transformer interwinding capacitance to appear on the…
Analyzing Power Quality Data with Python
Power Monitors provides a range of software tools for power quality analysis, including ProVision, Canvass and PQ Canvass. These general-purpose tools are built towards facilitating the most common types of…
Recommendations for Voltage Sags
Voltage sag is one of the most common power quality problems. The consequences for not troubleshooting a voltage sag complaint isn't the resulting damage that can be done to electrical…
Advanced Waveform Analysis Using Python
PMI provides a suite of powerful power quality analysis software packages, from ProVision – the primary desktop offering – to Canvass and PQ Canvass, both web-based products, all well-suited for…
ProVision Recording Templates
This white paper covers the creation and use of predefined recording templates in ProVision. PMI recording devices can be initialized with a number of configurable settings. Configurable settings include recording…
