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”
Category Archives: Case Studies
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”
Influence of Dispersed Generation on Reliability of Electric Network
Published by Juliya MALOGULKO, Svyatoslav VYSHNEVSKY , Iryna KOTYLKO, Natalia SOBCHUK, Vinnitsa National Technical University Abstract. The article analyzes the pace of increase in the generation of photovoltaic stations in the context of the combined electricity system of Ukraine and the energy supply company of PJSC “Vinnytsyaoblenergo”. An analysis of existing regulatory documents regulating theContinue reading “Influence of Dispersed Generation on Reliability of Electric Network”
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”
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”
Problems of Measuring the Electrical Parameters of Geopolymer Concretes
Published by 1. Michał KOZIOŁ1, 2. Jarosław ZYGARLICKI1, 3. Dariusz ZMARZŁY1, 4. Elżbieta JANOWSKA-RENKAS2, Politechnika Opolska, Wydział Elektrotechniki, Automatyki i Informatyki (1), Politechnika Opolska, Wydział Budownictwa i Architektury (2)ORCID: 1. 0000-0001-9075-8656; 2. 0000-0001-9330-4369; 3. 0000-0001-9421-4277; 4. 0000-0002-1877-6216 Abstract. The article presents the problems of measuring electrical parameters on the example of determining the resistivity ofContinue reading “Problems of Measuring the Electrical Parameters of Geopolymer Concretes”
Intelligent Redundant Measuring Circuit with Primary Circuit Error Detection
Published by Bartosz DOMINIKOWSKI, Politechnika Łódzka, Instytut Systemów Inżynierii Elektrycznej. ORCID: 1. 0000-0002-4762-2005 Abstract. Differential amplifiers in measuring systems are often exposed to external factors, which may lead to disturbance of their proper operation. Due to the capabilities of microprocessor systems, the intelligent algorithms work well in systems for diagnosing circuit errors such as aContinue reading “Intelligent Redundant Measuring Circuit with Primary Circuit Error Detection”
Analysis of Interactions in the Circuit of the Power System with Nonlinear Load and LC Passive Filter
Published by Mirosław WCIŚLIK, Paweł STRZĄBAŁA,Kielce University of Technology, Department of Electric Engineering, Automatic Control and Computer Science Abstract. The paper deals with an AC circuit containing the nonlinear load and a LC passive filter. Nonlinear load voltage at the power terminals proportional to the signum function of current is considered. The current-voltage characteristic ofContinue reading “Analysis of Interactions in the Circuit of the Power System with Nonlinear Load and LC Passive Filter”
Analysis of Selected Power Quality Indicators at Non-Measured Distribution Network Points Based on Measurements at Other Points
Published by Andrzej FIRLIT, Bogusław ŚWIĄTEK, Zbigniew HANZELKA, Krzysztof PIĄTEK, Mateusz DUTKA, Tomasz SIOSTRZONEK, AGH University of Science and Technology, Krakow, Poland Abstract. The article presents a method enabling estimation of the selected power quality indicators at a given point of a power network, on the basis of the power quality indicators recorded at theContinue reading “Analysis of Selected Power Quality Indicators at Non-Measured Distribution Network Points Based on Measurements at Other Points”
Siting Hydropower Plant by Rough Set and Combinative Distance-Based Assessment
Published by Ahmed M. Agwa1,2, Shaaban M. Shaaban1,3, Northern Border University (1), Al-Azhar University (2), Menoufia University (3), Egypt Abstract. Each power plant (PP) is solo entity whose construction site is determined by different criteria in accordance with some physical rules. Latterly, great importance is provided to siting PP in inexact surroundings. Multiple-criteria decision-making forContinue reading “Siting Hydropower Plant by Rough Set and Combinative Distance-Based Assessment”
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