Published by Olutayo Ogunyemi, School of Science and Engineering, Atlantic International University, Honolulu, HI. Abstract – Good power quality is essential in electrical power network. Power quality is not limited to availability of supply but also include steady frequency value and voltage magnitude and smooth waveform characteristics of the supply (Ogheneovo Johnson, 2016).The present situationContinue reading “Power System Harmonics”
Category Archives: Power Quality
An Introduction to Transformer Harmonic Current Derating Metrics
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”
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”
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”
Impacts of Fault Diagnosis Schemes on Distribution System Reliability
Published by Shahram Kazemi, Member, IEEE, Matti Lehtonen, and Mahmud Fotuhi-Firuzabad, Senior Member, IEEE.IEEE TRANSACTIONS ON SMART GRID, VOL. 3, NO. 2, JUNE 2012 Abstract—Design and development of fault diagnosis schemes (FDS) for electric power distribution systems are major steps in realizing the self-healing function of a smart distribution grid. The application of the FDSContinue reading “Impacts of Fault Diagnosis Schemes on Distribution System Reliability”
Practical Experiences and Mitigation Methods of Harmonics in Wind Power Plants
Published by Babak Badrzadeh, Senior Member, IEEE, and Manoj Gupta IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 49, NO. 5, SEPTEMBER/OCTOBER 2013 Abstract—This paper discusses practical experiences and mitigation methods of harmonics in wind power plants. Traces obtained from harmonic measurements of actual wind turbines are presented for the type 3 and type 4 turbines, andContinue reading “Practical Experiences and Mitigation Methods of Harmonics in Wind Power Plants”
Total Harmonic Distortion (THD) and Power Factor Calculation
Published by Alex Roderick, EE Power – Technical Articles: Total Harmonic Distortion (THD) and Power Factor Calculation, May 10, 2021. In this article, we will discuss how to measure total harmonic distortion and the power factor calculations utilized. Total harmonic distortion (THD) is the amount of harmonics on a line compared to the line fundamental frequency,Continue reading “Total Harmonic Distortion (THD) and Power Factor Calculation”
Researchers Achieve Higher Voltage PV With Inverter System
Published by Jake Hertz, EE Power – News: Researchers Achieve Higher Voltage PV With Inverter System, November 13, 2023. A team of researchers claims to cut cable requirements by 700 kg of copper per kilometer of cable with a higher voltage inverter system for photovoltaics. In photovoltaic (PV) systems, reducing cable size is essential for economicContinue reading “Researchers Achieve Higher Voltage PV With Inverter System”
Thailand Integrates Large-Scale Wind Farms
Published by C. MADTHARAD, Provincial Electricity Authority (PEA), Thailand. and J. WARMAN, Senergy Econnect Australia. T&D World – Renewables: Thailand Integrates Large-Scale Wind Farms, Sept. 28, 2015. Provincial Electricity Authority address power-quality issues that arise from increasing penetration of renewable energy. In the Kingdom of Thailand, power-quality regulations applicable to small power producers and veryContinue reading “Thailand Integrates Large-Scale Wind Farms”
Potential Transformer Operation, Applications and Accuracy
Published by Alex Roderick, EE Power – Technical Articles: Potential Transformer Operation, Applications and Accuracy, July 14, 2021. Learn about the operation and accuracy of potential transformers. The high voltages typically seen on power lines are a hazard to technicians working on or near the power lines. It is a difficult task to design a voltmeterContinue reading “Potential Transformer Operation, Applications and Accuracy”
Power Quality Blog 