Published by Žaneta Eleschová, Anton Beláň, Matej Cenký, Jozef Bendík, Boris Cintula, Peter Janiga, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Slovakia Abstract. This work refers to the concept of online monitoring of generators’ dynamic stability based on the critical clearing time (hereinafter referred to as “CCT”). The CCTContinue reading “Online Monitoring of the Power System Stability Based on the Critical Clearing Time”
Author Archives: PQBlog
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”
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”
Application of Electronic Load Circuit for Electrical Safety by using a Serial Mode Comparator
Published by Saktanong WONGCHAROEN1, Sansak DEEON1, Narong MUNGKUNG2, Pathumwan Institute of Technology, Thailand (1), King Mongkut’s University of Technology Thonburi, Thailand (2) Abstract. This research presented an electronic load circuit for electrical safety by using a serial mode comparator as a protection device against surges caused by electrical power lacking stability and quality. The applicationContinue reading “Application of Electronic Load Circuit for Electrical Safety by using a Serial Mode Comparator”
Possibilities of Using Blockchain Technology in the Area of Electricity Trade Settlements
Published by Anna ZIELIŃSKA AGH University of Science and Technology, Faculty of Electrical Engineering, Automatics, Computer Science and Biomedical Engineering. ORCID. 0000-0002-2889-1488 Abstract: The article describes the advantages and possibilities of using blockchain in various areas and sectors of the economy related to electricity trade and trading. The aim of the article is to presentContinue reading “Possibilities of Using Blockchain Technology in the Area of Electricity Trade Settlements”
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”
Review of Machine Learning Applications to Power Systems Studies
Published by Omorogiuwa Eseosa and Ashiathah Ikposhi, Electrical/Electronic Engineering, Faculty of Engineering University of Port Harcourt, Rivers State, Nigeria. Abstract – The complexity of electric power networks from generation, transmission and distribution stations in modern times has resulted to generation of big and more complex data that requires more technical and mathematical analysis because itContinue reading “Review of Machine Learning Applications to Power Systems Studies”
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”
Comparison of Two Concepts for Modeling of Lightning Strike into Overhead Line
Published by Karol ANISEROWICZ, Politechnika Białostocka, Wydział ElektrycznyORCID: 0000-0001-8895-3954 Abstract. The paper presents a comparison of results of determining the lightning current flow in the shield wires of a high voltage line, using the model of lightning in the form of a lumped current generator and the antenna model, which takes the electromagnetic coupling intoContinue reading “Comparison of Two Concepts for Modeling of Lightning Strike into Overhead Line”
Impedance Correction Method of Distance Relay on High Voltage Transmission Line
Published by Samira SEGHIR, Tahar BOUTHIBA, Université des Sciences et de la Technologie d’Oran Mohamed BOUDIAF, USTO-MB, Faculté de Génie Electrique, Laboratoire LGEO, BP 1505 El M’Naouer, 31000 Oran, Alegria Abstract. A distance protection relay plays a major role in faults detection in the electric transmission line. The fault resistance has an effect on theContinue reading “Impedance Correction Method of Distance Relay on High Voltage Transmission Line”
Power Quality Blog 