Published by Pacific Crest Transformers, 300 West Antelope Road – Medford, Oregon 97503 Tel : (541) 826 – 2113 Fax : (541) 826 – 8847. March, 2015. Transformers serving heavy nonlinear loads are subject to increased winding temperatures due to the harmonic currents generated by those loads. This overheating can result in a shortened serviceContinue reading “K-factor & Transformers”
Author Archives: PQBlog
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”
Where to Go For Help
Published by CEA Technologies Inc. (CEATI), POWER QUALITY Energy Efficiency Reference Guide, Chapter 5 – Where to Go For Help. Web Resources IEEE Standards Information Home of the IEEE standards; in particular 446; 519; 1100 (“The Emerald Book”, considered the key IEEE reference on power quality); 1159; 1250 and 1346. Copper.org A site by theContinue reading “Where to Go For Help”
Electric Arc Furnace Modeling for Voltage Flicker Evaluation
Published by Electrotek Concepts, Inc., PQSoft Case Study: Electric Arc Furnace Modeling for Voltage Flicker Evaluation, Document ID: PQS0313, Date: April 16, 2003. Abstract: A steel manufacturer is planning to add a second arc furnace to their existing facility. Concerns are raised as to whether the additional furnace will cause levels of voltage flicker that mightContinue reading “Electric Arc Furnace Modeling for Voltage Flicker Evaluation”
Solving and Mitigating Electrical Power Problems
Published by CEA Technologies Inc. (CEATI), POWER QUALITY Energy Efficiency Reference Guide, Chapter 4 – Solving and Mitigating Electrical Power Problems. 4.1 Identifying the Root Cause and Assessing Symptoms Power quality technologists employ technical instrumentation. This instrumentation can range from simple digital multi-metering through to sophisticated waveform analysis instruments. True power quality monitoring requires full-timeContinue reading “Solving and Mitigating Electrical Power Problems”
Wind Plant Voltage Flicker Data Analysis
Published by Electrotek Concepts, Inc., PQSoft Case Study: Wind Plant Voltage Flicker Data Analysis, Document ID: PQS1202, Date: January 26, 2012. Abstract: This case study presents the results for a wind plant voltage flicker data analysis. The characteristics of voltage flicker are mainly determined by load characteristics and the short-circuit capacity. The wind plant substationContinue reading “Wind Plant Voltage Flicker Data Analysis”
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”
Power Quality Measurements and Analysis for Wind Turbines
Published by Mariano Sanz, Member, IEEE, Andrés Llombart, Member, IEEE, Ángel Antonio Bayod and Joaquín Mur, Student Member, IEEE Abstract— A new system for studying power quality (PQ) in wind turbines (WT) has been designed using a data acquisition board (DAQ), LabVIEW programming software and a portable PC. The system has been installed at windContinue reading “Power Quality Measurements and Analysis for Wind Turbines”
Substation Voltage Flicker Data Analysis
Published by Electrotek Concepts, Inc., PQSoft Case Study: Substation Voltage Flicker Data Analysis, Document ID: PQS1208, Date: June 4, 2012. Abstract: This case study presents a substation arc furnace flicker measurement data evaluation. The characteristics of voltage flicker are mainly determined by load characteristics and the short-circuit capacity. The analysis included a helpful index forContinue reading “Substation Voltage Flicker Data Analysis”
Understanding Power Quality Concepts
Published by CEA Technologies Inc. (CEATI), POWER QUALITY Energy Efficiency Reference Guide, Chapter 2 – Understanding Power Quality Concepts. 2.1 The Electrical Distribution System One of the keys to understanding power quality is to understand how electrical power arrives at the socket, and why distribution is such a critical issue. Electrical power is derived fromContinue reading “Understanding Power Quality Concepts”
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