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”
Tag Archives: Safety/Protection
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”
Analysis of Thermal Field in 110 kV Cable Systems
Published by Janusz TYKOCKI1, Yong YUE2, Andrzej JORDAN3, The State College of Computer Science and Business Administration in Łomża (1), University of Bedfordshire (2), Visiting professor at University of Bedfordshire (UK), The State College of Computer Science and Business Administration in Łomża (3) Abstract. The paper presents the distribution of temperature field in high voltageContinue reading “Analysis of Thermal Field in 110 kV Cable Systems”
Effect of the Let-Through Energy of Overcurrent Protective Devices on the Temperature of Conductors during Short-Circuits
Published by 1. Stanislaw CZAPP, 2. Daniel KOWALAK, Gdańsk University of TechnologyORCID: 1. 0000-0002-1341-8276; 2. 0000-0001-9610-9884 Abstract. The scope of the verification of low-voltage systems covers the earth fault loop impedance measurement. This measurement is usually performed with the use of low-value current meters, which force a current many times lower than the one occurringContinue reading “Effect of the Let-Through Energy of Overcurrent Protective Devices on the Temperature of Conductors during Short-Circuits”
Influence of the Position of the Electrical Contact on the Size of the Temperature Distribution
Published by Dušan MEDVEĎ1, Ján ZBOJOVSKÝ2, Technical University of Košice. ORCID: 1. 0000-0002-8386-0000; 2. 0000-0003-4383-3996 Abstract. This paper deals with the investigation of temperature field distribution around the high-current electric contact. The analyses of temperature field were realised in simulation environment ANSYS and provide better understanding why the electrical contact position influences the heat dissipation.Continue reading “Influence of the Position of the Electrical Contact on the Size of the Temperature Distribution”
Diagnostics of Transformer Insulation by Frequency Domain Spectroscopy
Published by Miroslav GUTTEN, Daniel KORENCIAK, Peter BRNCAL, Viktor CEFER, University of Zilina, Slovakia Abstract. The paper deals with the diagnostics of insulation oil-paper in high-voltage transformers by frequency diagnostic spectroscopy. The first part of paper deals with the base information about diagnostics of power transformers. In this part are presented differently insulating methods, forContinue reading “Diagnostics of Transformer Insulation by Frequency Domain Spectroscopy”
Determination of the Resistance of a Grounding System with Application of Finite Element Method
Published by Abdelkader BOUDERBALLA1, Boubakeur ZEGNINI2, Tahar SEGHIER2,Abderrahmane TALEB Higher Normal School (ENS) of Laghouat (1), Amar TELIDJI University of Laghouat (2) Abstract. The protection of the equipment, the safety of persons and the continuity of the electrical supply are the main objectives of the grounding system. For its precise design, the possible potential distributionContinue reading “Determination of the Resistance of a Grounding System with Application of Finite Element Method”
Impedance-Differential Relay as a Transmission Line Fault Locator
Published by Justyna HERLENDER, Jan IŻYKOWSKI, Eugeniusz ROSOŁOWSKI, Wroclaw University of Science and Technology, Department of Electrical Power Engineering Abstract. This paper deals with analysis of impedance-differential protection applied to locating faults on power transmission line. Based on the voltage and current measurements at both line ends, the differential impedance is calculated. It enables toContinue reading “Impedance-Differential Relay as a Transmission Line Fault Locator”
Excitation Type and Results of Simulated Electric Field Distribution in MV Cable Termination
Published by Maciej CIUBA1, Michał WOJCIECHOWSKI1, Maciej OWSIŃSKI2, Michał BORECKI1,Warsaw University of Technology, Koszykowa 75, 00-662 Warszawa, Poland (1)Institute of Power Engineering – Research Institute, Mory 8, 01-330 Warszawa, Poland (2) Abstract. The presented article discusses the differences in the results of the electric field simulation in a medium voltage heat-shrinkable cable termination with theContinue reading “Excitation Type and Results of Simulated Electric Field Distribution in MV Cable Termination”
Modeling the Transient Response of Lightning Current on Grounding Systems Wind Turbines
Published by Amina DJABOREBBI, Boubakeur ZEGNINI, Djillali MAHI, Amar TELIDJI University of Laghouat, PoBox 37 G, Mkam Laghouat 03000, Algeria. Abstract. The paper deals with transient analysis of grounding systems wind turbines. To improve the accuracy of lightning impact studies on wind power grid generation, it is necessary to develop faster, more accurate simulation toolsContinue reading “Modeling the Transient Response of Lightning Current on Grounding Systems Wind Turbines”
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