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”
Tag Archives: Current
Measurement of Electric Current using Optical Fibers: A Review
Published by Jan NEDOMA, Marcel FAJKUS, Radek MARTINEK, VSB – Technical university of Ostrava Abstract. This article deals with the measurement of electric current in the energy via optical fibers. Nowadays, the measurement of the electrical current by using optical fiber most commonly based on the principle of Faraday effects, thus the magneto-optic effect. FOCSContinue reading “Measurement of Electric Current using Optical Fibers: A Review”
Differential Relay Protection for Prototype Transformer
Published by Bashar M. SALIH, Mohammed A. IBRAHIM, Ali N. HAMOODI, Northern Technical University Abstract. This paper represents the differential protection relay that used to protect the prototype-Terco power transformer. Matlab/Simulink is used to simulate the protection system. The power differential protection algorithm has been simulated and tested on a 2KVA power transformer under differentContinue reading “Differential Relay Protection for Prototype Transformer”
The Effect of Cable Duct Diameter on the Ampacity of High-Voltage Power Cables
Published by Filip RATKOWSKI1,2, Michał KOŁTUN2, Stanislaw CZAPP1, Gdańsk University of Technology (1), Eltel Networks Energetyka SA (2). ORCID: 1. 0000-0002-4698-9729, 3. 0000-0002-1341-8276 Abstract. The ampacity of power cables depends, among others, on the conditions of heat dissipation from the cable to the environment. Cables are usually laid directly in the ground, but in someContinue reading “The Effect of Cable Duct Diameter on the Ampacity of High-Voltage Power Cables”
Impact of Harmonic Current on Energy Meter Calibration
Published by Shannon Edwards, Dave Bobick, and Steven Weinzierl, Radian Research, Inc.Speaker: Steven Weinzierl, Radian Research, Inc., 3852 Fortune Drive, Lafayette, IN, 47905,USA, Tel: (765) 449-5548, Email: stevew@radianresearch.com Abstract: This paper compares and contrasts different methods to quantify VAR for single and polyphase energy meters. The results for the different methods will be compared inContinue reading “Impact of Harmonic Current on Energy Meter Calibration”
Measures and Technical Means for Increasing Efficiency and Reliability of Extra High Voltage Transmission Lines
Published by Vladislav KUCHANSKYY1, Paul SATYAM2, Olena RUBANENKO3, Iryna HUNKO4,Institute of Electrodynamics of NAS of Ukraine (1), Kiev, Ukraine University of the West of England (2), Bristol United Kingdom, Regional Innovational Center at the Faculty of Electrical Engineering University of West Bohemia (3), Plzen, Czech Republic, Vinnytsia National Technical University (4), Vinnytsia, Ukraine Abstract. ElectromagneticContinue reading “Measures and Technical Means for Increasing Efficiency and Reliability of Extra High Voltage Transmission Lines”
Large-Power Synchronous Motor Braking by Field Current
Published by Marian HYLA, Silesian University of Technology, Department of Power Electronics, Electrical Drives and Robotics Abstract. The paper presents the braking process of a large-power salient-pole synchronous motor forced by field current. The motor control was carried out using a microprocessor block for the excitation of large-power synchronous motors. Cases of free retardation andContinue reading “Large-Power Synchronous Motor Braking by Field Current”
Influence of Environmental Exposures on Electrical Parameters of Low Voltage Surge Arresters
Published by Piotr PAJĄK1, Bartłomiej SZAFRANIAK1, Anna DĄDA2, AGH University of Science and Technology, Faculty of Electrical Engineering, Automatics, Computer Science and Biomedical Engineering (1), MGGP S.A., Krakow Branch (2) Abstract. Low voltage surge arresters work in a very different environmental conditions. During the exploitation, under the influence of environmental exposures, the structure of metalContinue reading “Influence of Environmental Exposures on Electrical Parameters of Low Voltage Surge Arresters”
Faults Detection in PMSM Drive using Artificial Neural Network
Published by Konrad URBAŃSKI, Dariusz MAJCHRZAK,Poznań University of Technology Abstract. In this paper, simulation research results of PMSM drive with open phase fault detection are presented. Proposed fault detection system is implemented using two artificial neural networks. One of them is neural model of healthy PMSM and another one generates diagnostic signals. When the faultContinue reading “Faults Detection in PMSM Drive using Artificial Neural Network”
Anomalous Leakage Currents on Silicone Rubber Hollow Insulators
Published by Krystian Leonard CHRZAN1, Maciej ZIPP2,Wrocław University of Science and Technology (1), Gates Corporation (2) Abstract. Leakage currents on silicone and porcelain housings were measured at a 110 kV substation (site pollution severity class heavy) for 7 months. Both types of housing had a similar geometry. The current on porcelain housings is usually upContinue reading “Anomalous Leakage Currents on Silicone Rubber Hollow Insulators”
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