Published by S. Abdul Rahman1, Shumye Birhan Mule2, Estifanos Dagnew Mitiku3, Gebrie Teshome Aduye4, C. Gopinath5, Department of Electrical & Computer Engineering, Institute of Technology, University of Gondar, Ethiopia (1, 2, 3, 4) Department of Electrical & Electronics Engineering, Sri Venkateswara College of Engineering, Chennai, India (5) Abstract: The aim of this paper is toContinue reading “Highest Voltage Sag and Swell Compensation using Single Phase Matrix Converter with Four Controlled Switches”
Tag Archives: Transformers
Transformer Maintenance: Planning for Failure
Published by Ahmed Sheikh, EE Power – Technical Articles: Transformer Maintenance: Planning for Failure, September 26, 2023. This article examines transformer maintenance, including simple checks involving temperature and sound that indicate potential issues, maintenance procedures for energized and de-energized dry transformers, and assessments for energized liquid-cooled transformers. Because transformers are so reliable and most of theirContinue reading “Transformer Maintenance: Planning for Failure”
Advantages of Interwinding Capacitive Test Setup in FRA Diagnostics of Transformer Windings
Published by Wojciech SZOKA, Szymon BANASZAK, Konstanty M. GAWRYLCZYKZachodniopomorski Uniwersytet Technologiczny w Szczecinie, Katedra Elektrotechnologii i Diagnostyki, Poland Abstract. Transformers are the main element of the power system. Their reliable operation affects the efficiency of energy supply. Each transformer should be subjected to periodic diagnostic tests. Frequency response analysis (FRA) is a non-destructive diagnostic methodContinue reading “Advantages of Interwinding Capacitive Test Setup in FRA Diagnostics of Transformer Windings”
Autotransformers for Power Systems
Published by Waldemar ZIOMEK, PTI Manitoba Inc., Winnipeg, MB, Canada Abstract. When the primary and secondary voltages are obtained from the same winding, or from two windings which are galvanically connected, such a transformer is called an autotransformer. The paper will focus on fundamentals, design and applications of autotransformers of core-type design. The selected problemsContinue reading “Autotransformers for Power Systems”
Effect of Harmonics on Power Transformers: A Practical Demonstration and Analysis
Published by Munther Naif Thiab1, nmunther2@gmail.com, Kaleid waleed abid2, kaleidwaleedabid@gmail.com, Muhideen Abbas Hasan3, muhyabass@gmail.com,1, College of Engineering, University of Anbar, Iraq.2, Renewable Energy Research Center / University of Anbar. Iraq.3, Al-Dour Technical Institute, Northern Technical University, Iraq. Abstract: Voltage and current harmonics arise in the presence of nonlinear loads in the major supply. Moreover, theContinue reading “Effect of Harmonics on Power Transformers: A Practical Demonstration and Analysis”
Transformer Derating
Published by Electrotek Concepts, Inc., PQSoft Case Study: Transformer Derating, Document ID: PQS0324, Date: October 10, 2003. Abstract: A principal effect of harmonic distortion is to increase losses and heating in almost every component in the electric power system. While contributing almost no useful work, harmonic components of voltage and current increase the RMS value ofContinue reading “Transformer Derating”
Analysis of Transformer Condition by Frequency and Time Methods
Published by Matej KUČERA1, Milan ŠEBOK1, Miroslav GUTTEN1, Daniel KORENČIAK1, Pawel ZUKOWSKI2, Tomasz KOLTUNOWICZ2, University of Zilina, Slovakia (1), Lublin University of Technology, Poland (2) Abstract. Article presents theoretical and experimental analyses of possible mechanical effect of short-circuit currents on the transformer winding by frequency and time methods. The first part of the paper isContinue reading “Analysis of Transformer Condition by Frequency and Time Methods”
Measuring and Diagnostic System for Analysis of Transformer Insulation by Return Voltage Method
Published by Milan ŠIMKO1, Daniel KORENČIAK1, Miroslav GUTTEN1, Richard JANURA1,University of Zilina, Slovakia (1) Abstract. The first part of paper deals with the base information about diagnostics and analysis of transformer insulating system in time domain. The second part of paper deals with proposal measuring system of moisture analysis by return voltage method (RVM) forContinue reading “Measuring and Diagnostic System for Analysis of Transformer Insulation by Return Voltage Method”
The Influence of Power Supply Network Inductance on the HTS Transformer Inrush Current
Published by Grzegorz KOMARZYNIEC1, The Lublin University of Technology, Institute of Electrical Engineering and Electrotechnologies (1) Abstract. The HTS transformer inrush current may lead to thermal damage its windings made of HTS 2G tapes. The parameters affecting the value and duration of the inrush current are: the impedance of the transformer windings and the impedanceContinue reading “The Influence of Power Supply Network Inductance on the HTS Transformer Inrush Current”
Harmonic Mitigation Using Phase-shifting Transformers and Harmonic Filters
Published by Alex Roderick, EE Power – Technical Articles: Harmonic Mitigation Using Phase-shifting Transformers and Harmonic Filters, May 21, 2021. Learn about how minimise the presence of harmonics in an electrical system with harmonic transformers and filters. Three-phase loads do not generate triplen harmonics. Therefore, harmonic problems in situations where 3-phase loads dominate are primarily fromContinue reading “Harmonic Mitigation Using Phase-shifting Transformers and Harmonic Filters”
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