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…
Voltage White Papers
Power quality white papers on Voltage.
67 white papers in Voltage
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 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…
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…
CBEMA Graphs Revealed
The CBEMA (Computer Business Equipment Manufacturers Association) curve and the ITIC (Information Technology Industry Council) curve both refer to a similar method to visibly represent voltage events. A graph of…
Cold Load Pickup
One of the most visible customer-facing challenges an electric utility can face comes in the form of voltage interruptions. From the short, fraction-of-a-second momentary to the prolonged, multi-hour (or even…
Real-Time Voltage Interruption Detection and Alerting
Utility situational awareness is critical with today's high customer expectations, increased regulatory scrutiny, and reliance on stable AC power. Voltage interruption/outage detection is the most basic, and usually the most…
Spotting Loose Neutrals with Waveform Capture
A "loose neutral" in a residential location can cause equipment damage and even a house fire. An open neutral may start as a high resistance connection that shows subtle signs…
Understanding IEEE 1159 Definitions
It is very important to have recommended guidelines and practices in place regarding power quality monitoring with the use of consistent terminology and definitions of power quality phenomena. This is…
Quantifying Residential Voltage Sags
Voltage sag complaints are one of the most common in residential applications. Despite complaints, many residential voltage sags are not actually troublesome, or caused by the utility. Quantifying sag events…