Localizing Faults in Power Transmission Line with Applying Signals of Directional Elements at Both Line Ends

Published by 1. Justyna HERLENDER, 2. Jan IŻYKOWSKI, Wroclaw University of Science and Technology, Faculty of Electrical Engineering, Department of Electrical Power Engineering Professor emeritus. ORCID 1. 0000-0002-9469-4546; 2. 0000-0002-1048-551 Abstract. This paper presents the algorithm intended for localizing faults in a power transmission line for an inspection-repair purpose. Its innovative element is that aContinue reading “Localizing Faults in Power Transmission Line with Applying Signals of Directional Elements at Both Line Ends”

Selected Voltage Control Methods in LV Local Distribution Grids with High Penetration of PV

Published by Paweł SZCZEŚNIAK1, Piotr POWROŹNIK2, Elżbieta SZTAJMEC3, University of Zielona Góra, Institute of Automatic Control, Electronics and Electrical Engineering (1), University of Zielona Góra, Institute of Metrology, Electronics and Computer Science (2), Rzeszow University of Technology, Departament of Power Electronics and Power Engineering (3)ORCID: 1.0000-0002-5822-3878; 2.0000-0001-7485-9959; 3.0000-0002-2125-0207 Abstract. The growth in new prosumer electricityContinue reading “Selected Voltage Control Methods in LV Local Distribution Grids with High Penetration of PV”

Project of a Stratospheric Photovoltaic Power Station

Published by Stanisław BEDNAREK, Department of Physics and Applied Informatics, University of Łódź Abstract. The aim of this article is to present an innovative concept, concerning the design of a photovoltaic power plant located in the stratosphere. The most important advantage of this location is the increased access to solar energy, which can be convertedContinue reading “Project of a Stratospheric Photovoltaic Power Station”

Fiber Optic Technology for Pressure Measurements in High Voltage Switchgear

Published by 1. Damian KOSTYŁA1, 2. Paweł WĘGIEREK1, 3. Michał LECH1,Lublin University of Technology, Faculty of Electrical Engineering and Computer Science (1)ORCID: 1. 0000-0002-9012-0158; 2. 0000-0002-0812-3414; 3. 0000-0002-4732-2459 Abstract. The paper presents a review of traditional and fiber optic methods dedicated to pressure measurement in the context of ongoing research work on the development ofContinue reading “Fiber Optic Technology for Pressure Measurements in High Voltage Switchgear”

A Novel Method to Improve the Power Quality Via Hybrid System

Published by 1. Raghad Adeeb Othman1, 2. Omar Sh. Alyozbaky2,Department of Electrical Engineering, College of Engineering, University of Mosul, Iraq (1,2)ORCID: 1. 0000-0001-5875-9210; 2. 0000-0002-9735-1469 Abstract. Ever increasing electricity demand as well as the rapid depletion of fossil fuels have increased the need for hybrid power systems that integrate distributed energy resource (DER) systems; suchContinue reading “A Novel Method to Improve the Power Quality Via Hybrid System”

Power Consumption Control and Monitor using IoT Platform for Smart Office

Published by 1. Sahapong SOMWONG1, 2. Kritsada PUANGSUWAN2,Faculty of Engineering, Rajamangala University of Technology Srivijaya Songkhla, Thailand (1),Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani Campus, Surat Thani, Thailand (2) ORCID: (1) 0000-0002-2693-494X; (2) 0000-0003-1613-0611 Abstract. This paper reports the study to design and develop a system for controlling and displayingContinue reading “Power Consumption Control and Monitor using IoT Platform for Smart Office”

What Caused the Big Blackout in Spain and Portugal?

Published by Unipower AB, Metallgatan 4C, 44132 Alingsås, Sweden. Email: info@unipower.se On 28 April 2025, at 12:33 CET, the power systems of Spain and Portugal experienced a total blackout. Investigation is still in progress. Above and below is 30 minutes of high-resolution waveform data we could extract from a meter in the Portuguese grid. We couldContinue reading “What Caused the Big Blackout in Spain and Portugal?”

Impact of Renewable Resources Penetration on Maximum Loading Point and Dynamic Voltage Stability

Published by 1. Benalia Nadia1, 2. Ben Si Ali Nadia1, 3.Zerzouri Nora1, Badji Mokhtar Annaba University B.P 2300 Annaba Algeria. ORCID: 1. 0000-0003-4819-5313; 2. 0000-0001-7248-4823; 3. 0000-0003-1209-4617 Abstract. This paper presents the impact of a grid-connected photovoltaic (PV) generator with a wind turbine on dynamic voltage stability and maximum loading point by considering the PV-windContinue reading “Impact of Renewable Resources Penetration on Maximum Loading Point and Dynamic Voltage Stability”

High impedance Fault Detection in Low Voltage Overhead Distribution based Wavelet and Harmonic Indices

Published by Enaam ALBANNA1, Alya H. AL-RIFAIE2, Ahmed A. Abdullah AL-KARAKCHI3, Northern Technical University (1,2,3) ORCID: 1. 0000-0002-3974-0116; 2. 0000-0002-7978-2193; 3. 0000-0003-1151-3015; Abstract. High-impedance fault HIF occurs when an energized conductor makes contact with a surface with a high impedance. Conventional overcurrent protection cannot detect this fault due to the low fault current, and thereContinue reading “High impedance Fault Detection in Low Voltage Overhead Distribution based Wavelet and Harmonic Indices”

Communication Research of Protective Relays for Microgrids and Active Distribution Networks

Published by 1. Róbert Štefko1, Zsolt Čonka1, Michal Kolcun, 2. Viktor Jurák2, 3. Judith Pálfi3, Technical University of Košice (1), Brno University of Technology (2), Óbuda University (3) ORCID: 1. 0000-0002-2477-4559, 0000-0001-6620-4354, 0000-0002-8041-9076; 2. 0000-0002-6832-7654 Abstract. The penetration of renewable energy sources into the electricity distribution network causes changes in power flows, making conventional protectionContinue reading “Communication Research of Protective Relays for Microgrids and Active Distribution Networks”