Published by Horia Andrei1, Costin Cepisca2 and Sorin Grigorescu21Valahia University of Targoviste, 2Politehnica University of Bucharest, Romania 1.Introduction The chapter covers general issues related to power quality in Electric Arc Furnaces. The use of electric arc furnaces (EAF) for steelmaking has grown dramatically in the last decade. Of the steel made today 36% is producedContinue reading “Power Quality and Electrical Arc Furnaces”
Author Archives: PQBlog
General Reference Common Power Quality Problems and Solutions
Published by Electrotek Concepts, Inc., PQSoft Case Study: General Reference Common Power Quality Problems and Solutions, Document ID: PQS0315, Date: July 18, 2003. Abstract: Power quality is a frequently used term that means different things to different people. Common power quality problems include all of the issues that arise from the incompatibility between a utility’s powerContinue reading “General Reference Common Power Quality Problems and Solutions”
Am I not safe from harmonics if I use K-Rated transformers and oversized neutrals?
Published by Mirus International Inc., [2010-01-08] MIRUS-FAQ001-B2, FAQ’s Harmonic Mitigating Transformers, 31 Sun Pac Blvd., Brampton, Ontario, Canada. L6S 5P6. K-Rated transformers made their appearance several years ago as a means of preventing transformers from failing when subjected to heavy non-linear loading. They are essentially ‘beefed up’ transformers with extra steel in their cores andContinue reading “Am I not safe from harmonics if I use K-Rated transformers and oversized neutrals?”
Why is Good Power Quality Necessary?
Published by Merus Power Plc., October 13, 2016 Power quality is commonly defined as the power grid’s ability to supply a clean and stable power flow as a constantly available power supply. The power flow should have a pure sinusoidal wave form and it should remain within specified voltage and frequency tolerances. Why is goodContinue reading “Why is Good Power Quality Necessary?”
General Reference – Power Quality Glossary
Published by Electrotek Concepts, Inc., PQSoft Case Study: General Reference – Power Quality Glossary, Document ID: PQS0305, Date: January 27, 2003. Abstract: The document provides a glossary of terms related to power quality analysis and measurements. POWER QUALITY GLOSSARY Glossary Active Filter:A power electronics-based device configured with controls to provide cancellation of harmonic current components createdContinue reading “General Reference – Power Quality Glossary”
Lifetime and Reliability
Published by U.S. Department of Energy Office of Energy Efficiency & Renewable Energy, Article: Building Technologies Program SOLID-STATE LIGHTING TECHNOLOGY FACT SHEET, Website: ssl.energy.gov Lifetime and Reliability Long life has been billed as a key advantage of LEDs, but understanding and communicating how LED products fail and how long they last can be challenging. WhileContinue reading “Lifetime and Reliability”
Cyber-Physical System Security of a Power Grid: State-of-the-Art
Published by Chih-Che Sun 1, Chen-Ching Liu 1,2 and Jing Xie 1,* 1 School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA 99164,USA; csun@eecs.wsu.edu (C.-C.S.); liu@eecs.wsu.edu (C.-C.L.)2 Visiting Professor, School of Mechanical and Materials Engineering, University College Dublin, Belfield,Dublin 4, Ireland*Correspondence: jxie@eecs.wsu.edu; Tel.: +1-509-339-4246Academic Editors: Alfredo Vaccaro and Jin (Wei) Kocsis AbstractContinue reading “Cyber-Physical System Security of a Power Grid: State-of-the-Art”
How reliable are transformer energy efficiency tests (including Independent 3rd Party) under non-linear loading?
Published by Mirus International Inc., [2010-01-08] MIRUS-FAQ001-B2, FAQ’s Harmonic Mitigating Transformers, 31 Sun Pac Blvd., Brampton, Ontario, Canada. L6S 5P6. It is much more difficult to accurately determine the energy efficiency of a transformer under non-linear loading than it is under linear loading. The industry accepted technique for measuring transformer efficiency under linear load involvesContinue reading “How reliable are transformer energy efficiency tests (including Independent 3rd Party) under non-linear loading?”
Real Time Sustainable Power Quality Analysis of Non-Linear Load under Symmetrical Conditions
Published by Pavan Babu Bandla 1, Indragandhi Vairavasundaram 1, Yuvaraja Teekaraman 2, Ramya Kuppusamy 3 and Srete Nikolovski 4,* 1School of Electrical Engineering, Vellore Institute of Technology, Vellore 632014, India2MOBI-Mobility, Logistics and Automotive Technology Research Centre, Vrije Universiteit Brussel, 1050 Brussels, Belgium3Department of Electrical and Electronics Engineering, Sri Sairam College of Engineering, Bangalore 562106, India4PowerContinue reading “Real Time Sustainable Power Quality Analysis of Non-Linear Load under Symmetrical Conditions”
What constitutes an EPA Energy Star Transformer and is it important when supplying non-linear loads?
Published by Mirus International Inc., [2010-01-08] MIRUS-FAQ001-B2, FAQ’s Harmonic Mitigating Transformers, 31 Sun Pac Blvd., Brampton, Ontario, Canada. L6S 5P6. The Energy Star program is sponsored by the US Environmental Protection Agency (EPA) and is designed to encourage the use of energy efficient products. The Energy Star logo is found on many household appliances andContinue reading “What constitutes an EPA Energy Star Transformer and is it important when supplying non-linear loads?”
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