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”
Author Archives: PQBlog
Tests of Selected Distance Protection Functions of Modern Protective Relay used for HV and EHV Transmission Lines Protection
Published by Marcin JANUSZEWSKI, Ryszard KOWALIK, Karol KUREK, Emil BARTOSIEWICZ, Adam SMOLARCZYK, Désiré D. RASOLOMAMPIONONA, Warsaw University of Technology, Electrical Power Engineering Institute Abstract. This article describes the comparison of test results of distance protection functions (ANSI 21) implemented in protective relays of various manufacturers dedicated to HV and EHV lines protection. A special emphasisContinue reading “Tests of Selected Distance Protection Functions of Modern Protective Relay used for HV and EHV Transmission Lines Protection”
Start-up of Large Power Electric Motors with High Load Torque
Published by Jan ZAWILAK, Maciej GWOŹDZIEWICZ, Department of Electrical Machines, Drives and Measurements, Wroclaw University of Science and Technology, Wroclaw, Poland Abstract. This paper deals with issues relating to the start-up of AC motors with high load torque, presenting the results of measurements of current, voltage and power during the start-up of the following threeContinue reading “Start-up of Large Power Electric Motors with High Load Torque”
Power Quality Experimental Research at the Primorsky Wind Power Station
Published by Yuriy SAYENKO1, Ryszard PAWEŁEK2, Andrii MOLCHAN1, Ewa DYKA2, Pryazovskyi State Technical University (1)Lodz University of Technology, Institute of Electrical Power Engineering (2) Abstract. The article presents results of experimental studies of power quality indicators conducted at the wind farm with 52 DFIG wind turbines with a unit capacity of 3.8 MW by GeneralContinue reading “Power Quality Experimental Research at the Primorsky Wind Power Station”
Power Flow Control Algorithm in a Microgrid with Energy Storage
Published by 1.Dominika KACZOROWSKA, 2.Przemysław JANIK, 3.Łukasz JASIŃSKI, 4.Jacek REZMER, 5.Vishnu SURESH, Wroclaw University of Science and TechnologyORCID: 1. 0000-0002-2312-2903; 2. 0000-0001-5300-7845; 3. 0000-0002-7484-9424; 4. 0000-0002-2822-7595; 5. 0000-0003-2891-9206 Abstract. This paper discusses power flow control algorithm in a microgrid with battery energy storage system. Depending on the state of charge of the storage and theContinue reading “Power Flow Control Algorithm in a Microgrid with Energy Storage”
A Low Cost EMC Pre-Compliance Board for Electronic Devices and Smart Grids Networks
Published by H. X. Araujo1 , M. D. B. Melo1, I. R. S. Casella2 and C. E. Capovilla2,Universidade Federal do Tocantins (UFT) (1), Universidade Federal do ABC (UFABC)(2), Abstract. In this work, a low cost EMC – Electromagnetic Compatibility pre-compliance board, based on the conducted emission technique, is proposed as an option to analyze electronicContinue reading “A Low Cost EMC Pre-Compliance Board for Electronic Devices and Smart Grids Networks”
Selection Criteria and Analysis of Wind Turbines for DHW
Published by Artur NEMŚ, Magdalena NEMŚ, Adam RUZIEWIC, Wroclaw University of Science and Technology, Poland Abstract. The article describes the method and criteria of selecting wind turbines used to heat domestic hot water (DHW). The authors describe a method of choosing turbines based on power characteristics, climatic conditions and heating demands of a building. PowerContinue reading “Selection Criteria and Analysis of Wind Turbines for DHW”
Frequency Control in a Power System
Published by Pietro Tumino, EE Power – Technical Articles: Frequency Control in a Power System, October 15, 2020. Learn about the primary, secondary and tertiary frequency control in a power system. An electric power system is characterized by two main important parameters: voltage and frequency. In order to keep the expected operating conditions and supply energyContinue reading “Frequency Control in a Power System”
Does Smart Grid need new Informatics Tools?
Published by Jerzy Stanisław ZIELIŃSKI, Uniwersytet Łódzki, Kat. Informatyki Abstract: The paper begins with a short presentation of Smart Grid (SG) being the starting element of a chain of developing the idea of “smartness” not only in power but also in all industry branches implying growth of data generation (Big Data problem). Parallel to theContinue reading “Does Smart Grid need new Informatics Tools?”
Management System for Electric Vehicle Battery Pack
Published by Andrzej ŁEBKOWSKI, Gdynia Maritime University, Department of Ship Automation Abstract. Electric vehicles (EVs) emerged as a next step in the evolution of transport technology. The article describes structure of system used for optimal management and monitoring of electric vehicle parameters, especially in regions of low possible ambient temperature. System can be used inContinue reading “Management System for Electric Vehicle Battery Pack”
Power Quality Blog 