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…
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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,…
Wireless PQ Monitoring with the Javelin and Revolution
Introduction The Javelin is a utility-friendly cell router, providing communication access to devices in the field such as capacitor controllers, reclosers, voltage regulators, and DER inverters. A Javelin may also…
Ferroresonance and Power Quality
Most in the world of power quality are familiar with the concept of resonance in an electrical network as well as the methods for dealing with the issues and byproducts…
Canvass Multiburst
MultiBurst is a feature of Canvass which provides a secondary user interface for easily requesting and receiving real-time data from multiple devices at the same time. This allows for quick,…
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…
Using PMI Boomerangs with an RTAC
Introduction In addition to PMI's cloud-based Canvass system compatibility, Boomerang distribution monitors including a DNP3 port for use in SCADA. Advanced distribution programs such as volt/VAR optimization, DER management, and…
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…
Impact Loading
Impact loading occurs from the inrush current of large motors, welding apparatus, electric arc furnaces, or similar loads. The current pulses are less than short circuit values but may be…