Published by Richard Lam, CHK Power Quality Pty Ltd. Website: http://www.chkpowerquality.com.au Abstract. Transformer harmonic current derating metrics; Harmonic Loss Factor, K-Factor, and Factor K are introduced, and used to calculate derating factors for dry and oil-filled type transformers. Introduction The introduction of Switched Mode Power Supplies (SMPS) in office equipment and LED lighting, Variable Frequency/SpeedContinue reading “An Introduction to Transformer Harmonic Current Derating Metrics”
Tag Archives: Power Quality
Problems of the Current State of Power Quality and Proposals for their Solution
Published by Lidiya Kovernikova, Melentiev Energy Systems Institute of the Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russian Federation. Email: kovernikova@isem.irk.ru Abstract. The power quality in Russian electrical networks does not meet the requirements of regulatory documents. Big problems occur in all areas of people’s lives for this reason. Economic damage is oneContinue reading “Problems of the Current State of Power Quality and Proposals for their Solution”
Impact of Harmonics on Power Quality and Losses in Power Distribution Systems
Published by M. Jawad Ghorbani, H. Mokhtari**, Dept. of CSEE, West Virginia University, Morgantown, WV, USA, ** Dept. of EE, Sharif University of Technology, Tehran, Iran. ABSTRACT – This paper investigates the harmonic distortion and losses in power distribution systems due to the dramatic increase of nonlinear loads. This paper tries to determine the amountContinue reading “Impact of Harmonics on Power Quality and Losses in Power Distribution Systems”
Case Study for Obtaining Power Quality Grid-Code Compliance
Published by Dirk A. J. van der Bank, and Kyle Lass, Energize, July 2018 The practical implications of obtaining power quality (PQ) grid-code compliance for category C photovoltaic (PV) renewable power plants (RPP) are described in this article. Successful harmonic mitigation was implemented via means of the installation of active harmonic filters (AHF) at lowContinue reading “Case Study for Obtaining Power Quality Grid-Code Compliance”
Power Quality Survey in a Distribution System, Standard Procedures and Limitations
Publishd by H. Mokhtari1, S. Hasani and M. Masoudi2, 1Associate Professor Department of Electrical Engineering, Sharif University of Technology, Azadi Ave., Tehran, Iran. Email: mokhtari@sharif.edu, 2Project Engineer and Management, West Azarbayjan Utility, Oroumieh, Iran. Email: sh592b@yahoo.com Abstract ⎯ This paper presents the results of a power quality survey in a distribution system. More than fiftyContinue reading “Power Quality Survey in a Distribution System, Standard Procedures and Limitations”
The Problem of Determining the Coefficient of Flicker in Accordance to Normative Regulations
Published by Marta BĄTKIEWICZ-PANTUŁA, Wrocław University of Science and Technology, Institute of Electrical Power Engineering Abstract. The article presents an analysis of the selected parameter of the power quality. The analysis was done in accordance with the applicable normative regulations. The results presented in the article were made on the basis of actual measurements ofContinue reading “The Problem of Determining the Coefficient of Flicker in Accordance to Normative Regulations”
Analysis of Transient Waveforms in a Power System at Asymmetrical Short-Circuits
Published by Piotr PRUSKI, Stefan PASZEK, Silesian University of Technology Abstract. In the paper, there is presented the analysis of disturbance waveforms of a synchronous generator operating in a single-machine power system consisting of a generating unit connected by a high-voltage power line to a bus. There are considered disturbances in the form of symmetricalContinue reading “Analysis of Transient Waveforms in a Power System at Asymmetrical Short-Circuits”
PQ & DQ Based Shunt Active Power Filter with PWM & Hysteresis Techniques
Published by 1. Mahmood T. Alkhayyat1, 2. Mohammed Y. Suliman2, 3. Faisal Falah Aiwa3, Northern Technical University (1), (2), (3) IraqORCID: 1. 0000-0001-6119-7845, 2. 0000-0002-1250-6362, 3. 0000-0003-1974-6614 Abstract. Power quality is mainly affected by any deviation in voltage, current, or frequency that results in damage, upset, or failure of end-use equipment. Non-linear loads like powerContinue reading “PQ & DQ Based Shunt Active Power Filter with PWM & Hysteresis Techniques”
Power Quality Analysis for Light-Duty Electric Vehicles: A Case Study in Malta
Published by Kris Scicluna 1,* , Brian Azzopardi 1,2 and Kurt Spiteri 1,(1) Institute of Engineering & Transport, Malta College of Arts, Science and Technology, PLA 9032 Paola, Malta; brian.azzopardi@mcast.edu.mt (B.A.)(2) The Foundation for Innovation and Research—Malta, BKR 4012 Birkirkara, Malta*Correspondence: kris.scicluna@mcast.edu.mt; Tel.: +356-7986-8731 Abstract: This paper presents a power quality analysis for multiple electricContinue reading “Power Quality Analysis for Light-Duty Electric Vehicles: A Case Study in Malta”
On Capability of Different FACTS Devices to Mitigate a Range of Power Quality Phenomena
Published by Huilian Liao, Jovica V. Milanović, School of Electrical and Electronic Engineering, The University of Manchester, Manchester M60 1QD, UK E-mail: milanovic@manchester.ac.uk. IET Generation, Transmission & Distribution – Research Article Abstract: This study investigates the impact of different flexible AC transmission system (FACTS) devices on critical power quality (PQ) phenomena including voltage sags, harmonicsContinue reading “On Capability of Different FACTS Devices to Mitigate a Range of Power Quality Phenomena”
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