PQBlog

Power Quality Research Priorities

Published by Mark McGranaghan, VP, Integrated Grid, Electric Power Research Institute (EPRI), August 2020 Email: mmcgranaghan@epri.com

Overview of IEEE STD 1564-2014 Guide for Voltage Sag Indices

Published by Daniel Sabin, Electrotek Concepts , USA and Math Bollen, Luleå University of Technology, Sweden Emails: d.sabin@ieee.org & m.bollen@ieee.org Published in 23rd International Conference on Electricity Distribution, Lyon, 15th-18th June, 2015 ABSTRACT IEEE Std 1564-2014 Guide for Voltage Sag Indices is a new standard that identifies appropriate voltage sag indices and characteristics of electricalContinue reading “Overview of IEEE STD 1564-2014 Guide for Voltage Sag Indices”

Frequency Response of Instrument Transformers in the kHz Range

Published by Dr. Kerstin Kunde, Dr.-Ing. Holger Däumling, Dipl.-Ing. Ralf Huth, Dipl.- Ing. Hans-Werner Schlierf and Dr.-Ing. Joachim Schmid As the number of non-sinusoidal sources and loads in the network continues to grow, the importance of information concerning the quality of the current and the voltage becomes ever more important. Each deviation in frequency canContinue reading “Frequency Response of Instrument Transformers in the kHz Range”

What is Reactive Power?

Published by Peter W. Sauer, Department of Electrical and Computer EngineeringUniversity of Illinois at Urbana-Champaign, September 16th, 2003 Published in Power Systems Engineering Research Center (PSERC) Background Paper on Grid Reliability. Link: https://pserc.wisc.edu/resources/background.aspx Engineering talk Reactive power is a quantity that is normally only defined for alternating current (AC) electrical systems. Our U.S. interconnected gridContinue reading “What is Reactive Power?”

Developing a PQ Technology Park Concept for Poland

Published by Mark McGranaghan, Director, Distribution, Power Quality, and Intelligrid Electric Power Research Institute (EPRI), Warsaw June 25th, 2008

The Evolution of Revenue Meters to Smart Meters

Published by Terence (Terry) E. Chandler, Founder and Director of Power Quality Inc. Email: terryc@powerquality.org Presented in Powermetrix Webinar on Tuesday, March 2nd 2021.

Distribution Energy Efficiency Program (DEEP)

Published by Chuck Wallis, Distribution Engineering Services Manager, Alabama Power/Southern Company Presented at EPRI PQ and Smart Distribution 2010 Conference and Exhibition:Transporting You into the 21st Century Distribution System, June 14th – 17th, 2010

Isolating An Underground Cable Failure

Published by Charlie Williams, Senior Systems Consultant, S&C Electric Company

AC “Ice Cube” Relays Applied for Improved Power Quality

Published by Mark Stephens, P.E. and Alden Wright, P.E., CEM EPRI, Knoxville Presented at EPRI PQ and Smart Distribution 2010 Conference and Exhibition:Transporting You into the 21st Century Distribution System, June 14th – 17th, 2010

Power Quality Considerations of Wind Power Plants

Published by David Mueller, P.E., Manager, Power System Studies, Electrotek Concepts, Inc., Knoxville, Tennessee, USA Email: davem@electrotek.com Presented at 2010 Georgia Tech Fault Disturbance Analysis Conference Abstract Wind power plants are the fastest growing power generation source, and this trend is expected to continue. This paper describes the different types of wind power turbine electricalContinue reading “Power Quality Considerations of Wind Power Plants”