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…
White Papers
Browse our library of power quality technical resources.
446 white papers
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…
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…
Introduction to Solid State Power Transformers
The Solid State Transformer (SST) may be a groundbreaking innovation in electric distribution, replacing the century-old "pole pig" with a modern, active power supply architecture. Although still in the early…
DER Control and Management with the Eclipse
The Eclipse provides the ability to control remote equipment in the form of a DER inverter. DER refers to Distributed Energy Resources and is used to describe various decentralized sources…
ProVision Customization
The “out-of-the-box” ProVision layout is designed for general use. Fine tuning and customizing the ProVision environment streamlines PQ analysis and maximizes use of the screen workspace. We will explore the…
Power Quality in Traffic Signal Cabinets
The first electric traffic signals were installed over 100 years ago but now are a ubiquitous aspect of modern life. Today's intersections are far more complex, with a cabinet of…
Feeder Resonance
Substation circuit loads are mostly inductive, dominated by distribution transformers and large motors. Canceling a portion of this inductance with Power Factor Correction capacitors (PFCs) improves power factor by reducing…