Power Quality Issues in Smart Grid Environment – Serbian Case Studies

Published by ALEKSANDAR JANJIĆ, Department of renewable energy sources, R&D Center “Alfatec” Ltd. Bul. Nikole Tesle 63/5,18000 Niš, SERBIA, aleksandar.janjic@alfatec.rs ZORAN P. STAJIĆ, Faculty of Electronic Engineering, University of Niš, Aleksandra Medvedeva 14, 18000 Niš, SERBIA, zoran.stajic@alfatec.rs IVAN RADOVIĆ, ED “Elektrošumadija” Kragujevac, ED “Centar” d.o.o. Kragujevac, Slobode 7, 34000 Kragujevac, SERBIA, ivan.radovic@eskg.rs Abstract: – TheContinue reading “Power Quality Issues in Smart Grid Environment – Serbian Case Studies”

Electric Arc Furnace Flicker and Harmonic Control

Published by Electrotek Concepts, Inc., PQSoft Case Study: Electric Arc Furnace Flicker and Harmonic Control, Document ID: PQS0314, Date: April 16, 2003. Abstract: A steel manufacturer plans to construct an electric arc furnace-based steel making facility using a thin slab casting machine directly coupled to a hot strip rolling mill. The planned melt shop contains twoContinue reading “Electric Arc Furnace Flicker and Harmonic Control”

Power Quality Problems

Published by CEA Technologies Inc. (CEATI), POWER QUALITY Energy Efficiency Reference Guide, Chapter 3 – Power Quality Problems. 3.1 How Power Quality Problems Develop Three elements are needed to produce a problematic power line disturbance: A source A coupling channel A receptor If a receptor that is adversely affected by a power line deviation isContinue reading “Power Quality Problems”

Voltage Notching and Distribution Systems II – Large DC Drive Examples

Published by Electrotek Concepts, Inc., PQSoft Case Study: Voltage Notching and Distribution Systems II – Large DC Drive Examples, Document ID: PQS0506, Date: June 30, 2005. Abstract: This case study describes voltage notching associated with large DC drives. The notching is a normal characteristic of a phase-controlled rectifier but this paper illustrates problems that can occurContinue reading “Voltage Notching and Distribution Systems II – Large DC Drive Examples”

Voltage Notching and Distribution Systems – Large Induction Motor Drive

Published by Electrotek Concepts, Inc., PQSoft Case Study: Voltage Notching and Distribution Systems – Large Induction Motor Drive, Document ID: PQS0320, Date: July 18, 2003. Abstract: This case describes voltage notching associated with large adjustable speed drives. The notching is a normal characteristic of a phase-controlled rectifier but this paper illustrates problems that can occur onContinue reading “Voltage Notching and Distribution Systems – Large Induction Motor Drive”

PQ Investigation at a Battery Facility

Published by Electrotek Concepts, Inc., PQSoft Case Study: PQ Investigation at a Battery Facility, Document ID: PQS0402, Date: March 30, 2004. Abstract: This case study presents the results of a power quality investigation at a battery manufacturing facility. The facility had been experiencing a high rate of motor failures and was experiencing problems with its computerContinue reading “PQ Investigation at a Battery Facility”

A Power Quality and Load Analysis of a Cryptocurrency Mine

Published by Keaton A. Wheeler, Anthony W. Bowers, Charlie H. Wong, Jonathan Y. Palmer and Xue Wang, Primary Engineering and Construction, Saskatoon/Kelowna, Canada{kwheeler, abowers, cwong, jpalmer & swang}@primaryeng.comPublished in: 2018 IEEE Electrical Power and Energy Conference (EPEC)Date of Conference: 10-11 Oct. 2018DOI: 10.1109/EPEC.2018.8598358 Abstract— This paper conducts a load and power quality analysis on aContinue reading “A Power Quality and Load Analysis of a Cryptocurrency Mine”

Can neutral currents, such as the 3rd harmonic, be reduced by the use of 3rd harmonic blocking filters?

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. Some manufacturers are promoting the use of 3rd harmonic (180 Hz) blocking filters for the treatment of high neutral currents caused by non-linear loads such as personal computers. These devices are parallel L-C filters tunedContinue reading “Can neutral currents, such as the 3rd harmonic, be reduced by the use of 3rd harmonic blocking filters?”

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?”