Published by Dr. Sioe T. Mak, Power Quality Specialist and Steven E. Spencer , President – CEO, ADVANTAGE ENGINEERING, Inc. 769 Spirit of St. Louis Blvd., Chesterfield, MO. 63005, USA, Tel. 314-530-0470, Fax. 314-530-0670, E-mail ae@inlink.com ABSTRACT Many small and medium size industries and very large farming operations move into rural areas and small townsContinue reading “Power Quality Issues at Utilities Serving Rural Areas and Smaller Towns”
Author Archives: PQBlog
Nonlinear Loads Effect on Harmonic Distortion and Losses of Distribution Networks
Published by Mohammad Jawad Ghorbani, Salar Atashpar, Arash Mehrafrooz, Iran Energy Efficiency Organization (IEEO), Tehran, Iran. Emails: mjghorbany@ee.sharif.edu, s_atashpar@yahoo.com, arashmehrafrooz@saba.org.ir, Hossein Mokhtari, Sharif University of Tech, Tehran, Iran. Email: Mokhtari@sharif.edu Published in 26th International Power System Conference, Oct 31st – Nov 2nd, 2011, Tehran, Iran. Keywords-component; Harmonic Distortion, Loss estimation, Non-linear loads, Norton equivalent model,Continue reading “Nonlinear Loads Effect on Harmonic Distortion and Losses of Distribution Networks”
Why Specifying IEC 61000-4-30 Class A Is Not Enough
Published By Terry Chandler Director of Engineering, Power Quality Thailand LTD/Power Quality Inc., USA. Emails: terryc@powerquality.org, terryc@powerquality.co.th 1. A new revision of the IEC standard for PQ monitors 61000-4-30 Class Edition 3 2015 has been released. Why? It includes new parameters and new requirements for accuracy over the entire operating temperature range. 2. The PQ Instrument must haveContinue reading “Why Specifying IEC 61000-4-30 Class A Is Not Enough”
PQDiffractor is a Free PQDIF and COMTRADE Viewer
Published by The Electrotek Team PQView 4 brings you a smooth interface for viewing PQDIF and COMTRADE files, along with a wealth of other power quality monitoring and analytical capabilities. But what if you’re in a pinch and only need the file viewer? PQDiffractor is a PQDIF and COMTRADE viewer written by Electrotek Concepts, Inc. forContinue reading “PQDiffractor is a Free PQDIF and COMTRADE Viewer”
Laboratory Investigation of the Input Current Characteristics of Modern Domestic Appliances for Varying Supply Voltage Conditions
Published by Sean Elphick, Senior Member, IEEE University of Wollongong, elpho@uow.edu.auPhilip Ciufo, Senior Member, IEEE University of Wollongong, ciufo@uow.edu.auSarath Perera, Member, IEEE, University of Wollongong, sarath@uow.edu.au Publication Details S. Elphick, P. Ciufo & S. Perera, “Laboratory investigation of the input current characteristics of modern domestic appliances for varying supply voltage conditions,” in 14th International ConferenceContinue reading “Laboratory Investigation of the Input Current Characteristics of Modern Domestic Appliances for Varying Supply Voltage Conditions”
Phasor-Based Approach for Harmonic Assessment from Multiple Distributed Energy Resources
Published by Reza Arghandeh & Alexandra von Meier, Member IEEE, CIEE, EECS Dept, University of California, Berkeley, Berkeley, CA, USA. Email: arghandeh@berkeley.ed Robert Broadwater, Senior Member IEEE, ECE Dept Virginia Tech, Blacksburg, VA, USA Abstract — This paper analyzes impacts and interactions of harmonics from multiple sources, especially distributed energy resources, on distribution networks. WeContinue reading “Phasor-Based Approach for Harmonic Assessment from Multiple Distributed Energy Resources”
Power Quality Standards
Published by Mark McGranaghan, Electrotek Concepts, Inc. Electrical Contractor Magazine, Power Quality for the Electrical Contractor Course Introduction Power quality has always been important. However, for many years the equation defining power quality was very simple: POWER QUALITY = RELIABILITY Customer loads were linear in nature. When a sinusoidal voltage was supplied to them, theyContinue reading “Power Quality Standards”
Dranetz Announces Flex CT’s For DranXperT!
Dranetz is pleased to announce the addition of Flex CT’s to DranXperT. DranXperT is a low cost, 3-phase power & energy logger for use in virtually any power logging application. With the addition of Flex CT’s, DranXperT now offers the widest range of CT choices on the market. DranXperT’s capabilities includes: High accurate power &Continue reading “Dranetz Announces Flex CT’s For DranXperT!”
The Ultimate PQ Data Concentrator
Published by The Electrotek Team PQView is much more than a power quality data browser. It is also a powerful data concentrator for any sized monitoring system. PQView’s PQ Data Manager System (PQDMS) offers seamless integration to meters from many popular manufacturers. Support for generic file formats such as PQDIF and COMTRADE is also available,Continue reading “The Ultimate PQ Data Concentrator”
Application of IEEE STD 519-1992 Harmonic Limits
Published by Thomas M. Blooming, P.E., Email: t.blooming@ieee.org, Eaton Electrical Asheville, North Carolina Daniel J. Carnovale, P.E., Email: DanielJCarnovale@eaton.com, Eaton Electrical Pittsburgh, Pennsylvania Presented at the 2005 IEEE IAS Pulp and Paper Industry Conference in Appleton, WI. Abstract IEEE Std 519-1992 is a useful document for understanding harmonics and applying harmonic limits in power systems.Continue reading “Application of IEEE STD 519-1992 Harmonic Limits”
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